The majority of Williams coil part numbers indicate the construction method of the coil. The first letter or two indicates the type of sleeve, the position or length of the wire terminal lugs.
The 'AL' and 'AR' coils are used when the lugs on an 'AE' coil would be in the way of a metal coil mounting bracket or any other close mechanical device.Wire Gauge, Number of Wire Turns and Coil Strength Rules
The higher the American Wire Gauge number, the smaller the diameter of wire. A small diameter wire has more resistance per foot of wire then a large diameter wire and will take fewer turns of wire for a given coil supply voltage. This makes the coil cheaper to manufacture because wire is sold by the pound and not by the length of the spool of wire. Small sized wires can also lead to a coil that is easy to burn because a small size wire will heat up faster then a large diameter wire.Coil Strengths, Turns of Wire Rule and Coil Power Supply Voltages
Coil pull in strength wiring rule: The greater the number of turns of wire on a coil the weaker the solenoid coil.
When some early EM pinball games were made, AC to DC current conversion was both rare and expensive to do. Current conversion was eventually made cheap and easy with semiconductors inside of a bridge rectifier. However, the early expense of current conversion started the tradition of not converting AC into DC that lasted all the way to to the start of electronic pinball games.
Coils that may be activated for a long period of time (either by design or by a faulty/shorted play field switch on an EM pinball) usually have at least 1300 or more turns of a large diameter wire. Score reel, chime, 'lock' relay, coin lockout coils and the 'hold' relay coil on most EM pinball games are examples of a coil designed to be activated for a long time without overheating.
"High Tapping" a game with a normal line voltage is not recommended either as this can cause coils to overheat. Fixing or repairing the game's power supply is vastly superior to increasing the power supply voltage through "High Tapping" a game. See our Arcade Tech Tips page for more info on high tapping the game's transformer.
Or our coin-op catastrophe collection for some interesting coil photos.Flipper Coils, Drive Circuits and Coil Supply Voltages and Current Types
Additional Data East and Saga flipper coil information is on our pinball circuit board charts
This new type of flipper coil doesn't have two sets of coil winding numbers in its part number. In fact, single winding flipper coils usually have only an arbitrary, non-specific part number on them (example; 090-5020-20). The part number doesn't indicate anything about how the coil was constructed or its pull in strength. One coil winding flipper coils can be identified by a flipper strength chart using the coil's wrapper color or by simply using the game's manual. However, Data East and some other pinball manufacturers liked to use a wrapper less coil with only a small part number sticker that usually burns up with the coil.
Coil Voltages - Early EM pinball and late model electronic games use a relatively high 50 volt solenoid coil voltage. This high drive voltage produced coils with very strong pull in strengths and a wider range of coil strength adjustment then the much lower 28-39 voltage solenoid coils.
Differences in Coil Driver Circuits - Old model Williams/Bally Electronic pinball games use bipolar driver transistors to supply Direct Current to an activated coil. Usually, but not always, transistors (tip120) are used to ground one side (wire lug) of a solenoid coil in an early solid state pinball game. The other coil wire lug is connected to the appropriate supply voltage for the coil to be activated.
Coil Voltages by Game Manufacturer
Gottlieb 1947 to 1989: 28 volts, Gottlieb 1989 (system3) to 1996: 50 volts
Williams 1947 to 1963: 50 volts, Williams 1963 to 1986: 28 volts, Williams 1986 to 1989: 28 or 50 volts, Williams 1989 to 1999: 50 volts
Bally 1947 to 1977: 50 volts, Bally 1977 to 1988: 43 volts, Bally 1988 to 1999: 50 volts
Zaccaria: 39 volts
Coil voltage information is from a R.G.P. post and has not been 100% verified.
Low Line Voltage Adjustment - Most Coin-Op Arcade games including both Electro-mechanical and electronic games have a way to increase the amount of voltage the power supply provides to compensate for low line voltage (Line voltage is measured at the wall plug or voltage source receptacle). Usually a long distance between power transmission line transformers, an old fuse breaker, wiring corrosion and even different power line voltages between countries can cause a lowering of the power supply voltage. This condition can cause all of the game coils to appear to be weak or sluggish. A low line voltage condition can even cause random game resets as describe on the Tech Tips page. Line Voltage should be checked before a game is turned on for the first time or when the game has been moved to a new location. Coil Part Number Substitutions
It is always best to use a coil with a small wire gauge number (large diameter wire) and same number of wire turns as the original coil, but only if the exact part number cannot be found. However, specs like core length, coil diode (if present on original coil) and coil body style should always be the same between the original coil and its substitute coil.
Other pinball game and coin-op arcade technical info can be found on Pinball Medic's Tech Tips Pinball Coil Charts by Manufacture
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Bally EM Pinball Coil Chart Williams Pinball Coil Chart GAMEPLAN GOTTLIEB Chicago Coin Zaccaria![]()
Data East to New Stern Approximated Coil Substitutions Chart
Williams EM Pinball Solenoid Coil Chart
| Coil Number | Typical Application | Coil Number | Typical Application |
| A-22-550 | Ball Release, Unit Step-up | C2-26-800 | Bell, Chime |
| A-23-600 | Ball Ejector, Unit Step-up | FL-20-300/28-400 | Flipper |
| A2-23-750 | Knocker, Bell | FL-21-375/28-400 | Flipper |
| A2-26-1025 | Chime | FL-26-950/250 | Step-up |
| A2-26-1300 | Chime | G-21-400 | Horse Race Ball Shooter |
| B-26-800 | Score Drum, Unit Reset | G-22-550 | Jet Bumper, Drop Target, Reset |
| B-27-1100 | Reset | G-23-750 | Jet Bumper, Ball Ejector, Kicker |
| B-28-1450 | Score Drum Unit | G-23-750-DC | DC Jet Bumper, Kicker |
| B1-26-800 | Score Drum, Unit Reset | ||
Williams Old Coil Number to New Coil Part Number Cross-Reference Chart
SA-23-850DC ~ AE-23-800-01
SA3-23-850DC ~ AE-23-800-04
SA2-23-850DC ~ AE-23-800-05
SG-23-850DC ~ AE-23-800-06
SA4-23-850DC ~ AE-23-800-07
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Williams Coil Prefix / Matching Coil Sleeve chart
"=inch COIL SLEEVE INFO
SG-23, SG-1-23, SF-20 = 1 3/4" plastic coil sleeve
SA-23 = 1 3/4" aluminum coil sleeve
SA-2-23 / 2 3/4" plastic flanged coil sleeve
SA-3-23, SFL-19 = 2 1/4" plastic coil sleeve
SA-4-23 = 2" plastic flanged
FL-23 = 2 3/16" plastic coil sleeve
Late Model Williams Electronic Pinball Game Flipper Coils (1990-Later)
(DC Coils)
| Bally EM Pinball Coil Chart | Old Bally Coil Number to New Coil Cross-Reference Charts (Old Bally Coil Chart information is originally from a Bally Chart dated Jan. 6, 1971) | ||
| Coil Number | Typical Application -- Coil Resistance | Old ~ New Coil Number | Old ~ New Coil Number |
| A-25-850 | Outhole Kicker | CO-25A-7 ~ A-25-1050 | E-184-213 ~ A-27-1300 |
| A-25-950 | Outhole Kicker | CO-25GG-7 ~ B-25-925 | E-184-218 ~ F-31-1500 |
| A-25-1000 | Thumper Bumper | CO-25H-7 ~ BC-25-925 | E-184-224 ~ F-31-2100 |
| A-26-1100 | Outhole Kicker | CO-26A-9 ~ A-26-1100 | E-184-231 ~ CA-29-800/31-900 |
| A-26-1200 | Sling Shot | CO-26GG-9 ~ B-26-1100 | E-184-235 ~ AK-25-1050 |
| A-27-1100 | Kickout | CO-27R-11 ~ C-27-1000 | E-184-236 ~ J-28-1100 |
| A-28-1900 | CO-28R-15 ~ C-28-1100 | E-184-241 ~ AF-25-600/31-1000 | |
| AF-25-500/28-1000 | Flipper | E-184-41 ~ BF-27-1250 | E-184-243 ~ A-26-1200 |
| AF-25-600/28-800 | Flipper | E-184-46 ~ EA-30-1150 | E-184-248 ~ FC-30-1300 |
| AF-25-600/31-1000 | Flipper | E-184-47 ~ EA-32-1550 | E-184-249 ~ BF-28-1500 |
| AF-26-650/28-800 | Flipper | E-184-55 ~ B-29-1200 | E-184-250 ~ D-30-700 |
| AF-26-750/28-800 | Flipper | E-184-56 ~ A-27-1100 | E-184-252 ~ BB-26-655/32-1245 |
| AF-27-1000/32-1300 | Flipper | E-184-74 ~ CF-28-1025 | E-184-254 ~ FC-30-1400 |
| AK-27-1300 | Knocker | E-184-75 ~ E-32-1700 | E-184-257 ~ AP-25-1050 |
| AP-25-850 | Outhole Kicker | E-184-112 ~ EA-29-950 | E-184-260 ~ B-28-1600 |
| AP-26-1200 | Disappearing Post | E-184-135 ~ BA-25-925 | E-184-261 ~ AP-31-3000 |
| AP-27-1300 | Thumper Bumper, Sling Shot | E-184-155 ~ D-27-425 | E-184-262 ~ A-26-1200 |
| B-25-750 | E-184-156 ~ D-28-500 | E-184-263 ~ AF-27-775/31-861 | |
| B-25-925 | E-184-160 ~ B-25-750 | E-184-264 ~ A-28-1900 | |
| B-26-1100 | Ball Count, Bonus, Credit Units Step-up | E-184-175 ~ AP-27-1300 | E-184-265 ~ AF-25-600/31-1000 |
| B-27-1300 | Free Ball Escape, Stepping Unit | E-184-180 ~ CE-33-4800 | E-184-266 ~ D-29-675 |
| BA-25-925 | E-184-190 ~ AF-25-600/31-1000 | E-184-268 ~ AF-26-750/31-900 | |
| BA-26-1040 | E-184-204 ~ AF-27-1000/32-1300 | E-184-269 ~ FC-33-2600 | |
| BC-25-925 | E-184-205 ~ B-27-1300 | E-184-270 ~ AB-31-3000 | |
| BF-27-1250 | E-184-206 ~ CD-29-1600 | E-184-271 ~ AK-24-750 | |
| C-27-1000 | Knocker | E-184-207 ~ A-27-1400 | E-184-272 ~ A-25-1000 |
| C-27-1300 | E-184-274 ~ FC-32-2100 | ||
| C-28-1100 | Ball Count, Bonus, Credit Units Reset | ![]() | |
| CB-31-2000 | Bell | ||
| CC-31-2000 | Chime | ||
| CD-29-1600 | Ball Count, Bonus, Credit Units Step-up | ||
| CG-29-1600 | Chime | ||
| N-21-650 | Drop Target | ||
| N-24-800 | Drop Target | ||
Data East to Stern Part Number Conversions
Note: The coils on this DE to Stern substitution chart are approximately interchangeable but chart does not account for special length coil sleeves or coil body differences between flipper coils and their equivalent non-flipper coil counterparts. Substitutions are based on number of turns of wire and wire gauge only.| Data East Coil Part Number | Approximated New Stern Pinball Coil Part Number and Coil Resistance in Ohms | Typical use |
| 090-5006-00 Flipper coil used on 500-5031-03 flipper assembly. | 23-620 / 30-2600 Coil Resistance 2.4 / 75 | Flipper Coil SECRET SERVICE |
| 090-5012-00 | 22-800 / 30-2600 Coil Resistance 2.8 / 90.5 | TORPEDO ALLEY- upper right flipper |
| 090-5020-30 single winding flipper coil Three lugged coil body (one lug not used) with one diode across coil. | 23-900 Coil Resistance: 3.8 | single winding flipper coil TEENAGE MUTANT NINJA TURTLES, STAR TREK 25th ANNIVERSARY HOOK (lower flippers), BATMAN, ROCKY & BULLWINKLE JURASSIC PARK (upper right is 090-5030-00) LAST ACTION HERO, BAYWATCH, TOMMY BATMAN FOREVER (upper right flipper) AUSTIN POWERS (left flipper only, right flipper is 090-5030-00) |
| 090-5030-00 single winding flipper coil Only two wire lugs on coil body with coil diode wired across them. | AE-23-1100 with long Data East flipper sleeve and coil diode added. | single winding flipper coil HOOK, LETHAL WEAPON 3, MARY SHELLEY'S FRANKENSTEIN BAYWATCH (lower left, upper right flipper, lower right flipper is 090-5020-30), STARSHIP TROOPERS VIPER NIGHT DRIVIN', LOST IN SPACE, SOUTH PARK, SHARKEY'S SHOOTOUT, NASCAR |
| 090-5032-OT single winding flipper coil. Three lugged coil body (one lug not used) with one diode across coil. Flipper coil with diode for solid state flipper systems replaces part 090-5032-00. | Single winding flipper coil. BATMAN FOREVER, STAR WARS (Data East), TALES FROM THE CRYPT, WWF ROYAL RUMBLE, GUNS N' ROSES GOLDEN EYE, ID4 INDEPENDENCE DAY, SPACE JAM, STAR WARS TRILOGY, LOST WORLD JURASSIC PARK X-FILES, GODZILLA, Stern/Sega HARLEY DAVIDSON, STRIKER XTREME, MONOPOLY MAVERICK, APOLLO 13, STARSHIP TROOPERS - upper right flipper, ROLLER COASTER TYCOON Note:'T' suffix indicates diode is on the 'Top' or coil winding side of the spool lugs. | |
| 090-5026-00 | Equivalent to Gottlieb A-19217 | CHECKPOINT - Used on single bank drop target assembly 500-5240-00. |
| 090-5011-00 | 22-750 / 30-2600 Coil Resistance 2.6 / 92 | LASER WAR, TORPEDO ALLEY, TIME MACHINE |
| 090-5020-20 single winding flipper coil. Three lugged coil body (one lug not used) with one diode across coil. | 22-900 Coil Resistance in ohms: 3.4 | ROBOCOP, PHANTOM OF THE OPERA, BACK TO THE FUTURE THE SIMPSONS, CHECKPOINT |
Data East to Williams Coil Part Number Conversion Chart
| Note: The coils on this DE to Williams substitution chart are approximately interchangeable. Chart does not account for special length coil sleeves or coil body differences between flipper coils and their equivalent non-flipper coil counterparts. Substitutions are based on number of turns of wire and wire gauge only. | ||||
| Data East Part Number | Williams Coil Number | Data East | Williams | |
| 090 - 5001 - 00 | 23 - 800 | 090 - 5023 - 00 | 22 - 600 | |
| 090 - 5002 - 00 | 24 - 900 | 090 - 5025 - 00 | 24 - 1570 | |
| 090 - 5003 - 00 | 27 - 1300 | 090 - 5030 - 00 | 23 - 1100 | |
| 090 - 5004 - 00 | 27 - 1500 | 090 - 5031 - 00 | 32 - 1800 | |
| 090 - 5005 - 00 | 23 - 840 | 090 - 5032 - 00 | 22 - 1080 | |
| 090 - 5006 - 00 | 23 - 620 / 30 - 2600 | 090 - 5034 - 00 | 25 - 1240 | |
| 090 - 5008 - 00 | 23 - 1200 | 090 - 5036 - 00 | 24 - 940 | |
| 090 - 5010 - 00 | 32 - 590 | 090 - 5036 - 01 | 24 - 940 | |
| 090 - 5011 - 00 | 22 - 750 / 30 - 2600 | 090 - 5037 - 43 | 23.5 - 765* | |
| 090 - 5012 - 00 | 23 - 800 / 30 - 2600 | 090 - 5041 - 00 | 25 - 1800 | |
| 090 - 5013 - 00 | 23 - 700 / 30 - 2600 | 090 - 5042 - 01 | 22 - 650 | |
| 090 - 5015 - 00 | 27 - 1400 | 090 - 5044 - 00 | 26 - 1200 | |
| 090 - 5016 - 00 | 29 - 2000 | 090 - 5046 - 00 | 28 - 1050 | |
| 090 - 5017 - 00 | 22 - 500 | 090 - 5053 - 00 | 23 - 800 | |
| 090 - 5019 - 00 | 23 - 750 | 090 - 5054 - 00 | 31 - 1500 | |
| 090 - 5020 - 10 | 21 - 900 | 090 - 5059 - 00 | 29 - 1000 | |
| 090 - 5020 - 20 | 22 - 900 | 090 - 5061 - 00 | 24 - 780 | |
| 090 - 5020 - 30 | 23 - 900 | 090 - 5062 - 00 | 23 - 1500 | |
| 090 - 5021 - 00 | 20 - 400 | 090 - 5064 - 02 | 20.5 - 480* | |
| 090 - 5022 - 00 | 23 - 700 | *One half of a wire gauge will make very little difference. Use the next lower (preferred) or higher wire gauge when substituting. | ||
Gottlieb EM Pinball Coil Chart
| Catalog Number | Typical Application | Coil Resistance (Ohms) | Wire Gauge- Number of Turns | Coil Wrapper Color | Catalog Number | Typical Application | Coil Resistance (Ohms) | Wire Gauge- Number of Turns | Coil Wrapper Color | |
| A-1496 | General Purpose | 2.95 | 23-635 | YELLOW | A-18642 | Trip/Relay | 58 | 33-1590 | WHITE | |
| A-4893 | G. P. | 2.1 | 22-535 | RED | A-19300 | G. P. | 7.8 | 25-1075 | ORANGE | |
| A-5194 | G. P. | 4.5 | 24-780 | BLUE | A-19508 | Target Trip / Relay | 35 | 32-1250 | YELLOW | |
| A-5195 | G. P. | 12.3 | 26-1305 | WHITE | A-20558 | Relay | 156 | 34-3400 | WHITE | |
| A-15259 | EM Score Reel | ?? | ?? | A-21741 | VUK | 2.5 | 23-575 | ORANGE | ||
| A-16570 | G. P. | 15.5 | 28-1750 | GREEN | A-26450 | G. P. | 42 | 29-2400 | PINK | |
| A-16890 | G. P. / Relay | 231 | 27-1450 | ORANGE | A-26451 | G. P. | 65.8 | 30-3000 | BLUE | |
| A-17876 | G. P. | 24 | 35-4000 | TAN | A-26452 | Target Trip / Relay | 137 | 35-2450 | PINK | |
| A-17891 | 5 Target Reset | 3.35 | 22-850 | WHITE | A-26926 | 3 Target Reset | 32.8 | 27-2650 | BLUE | |
| A-18102 | 3/7(X2) Target Reset | 9 | 24-1430 | RED | A-27926 | G. P. | 64.7 | 29-3475 | ||
| A-18318 | 4 Target Reset | 6.7 | 24-1130 | ORANGE | A-30297 | G. P. | 66.5 | 30-2750 |
GOTTLIEB FLIPPER COILS
| Catalog Number | Typical Application | Pull-In / Hold Coil (Ohms) | Wire Gauge / Number of Turns | Coil Wrapper Color | Gottlieb Coil | Wire Gauge/Turns | Ohms | Wrapper Color | Usage | |
|---|---|---|---|---|---|---|---|---|---|---|
| A-17875 | Flipper | 2.4 / 40 | 24-560/ 31-1100 | YELLOW | A-17875 | 24-560/ 31-1100 | 2.8/ 40 | Yellow | Flipper | |
| A-20095 | Super Flipper | 1.55 / 35.5 | 22-450/ 31-900 | RED | A-20095 | 22-450/ 31-900 | 1.55/ 35.5 | Red | Super Flipper | |
| A-24161 | Small Flipper | 2.2 / 40 | 23-520/ 31-1050 | BLUE | A-24161 | 23-520/ 31-1050 | 2.2/ 40 | Blue S | small Flipper | |
| A-25959 | Flipper | 3.85 / 202 | 22-445/ 30-1225 | RED | A-25959 | 22-445/ 30-1225 | 3.85/ 202 | Red | Flipper (new) | |
| A-26646 | Flipper | 4.57 / 201 | 25-725/ 33-3470 | BLUE | A-26646 | 25-725/ 33-3470 | 4.57/ 201 | Blue | Flipper (new) | |
| A-27642 | Flipper | 9.1 / 203 | 27-950/ 33-3700 | YELLOW | A-27642 | 27-950/ 33-3700 | 9.1/ 203 | Yellow | Flipper (new) | |
| A-27643 | Flipper | 11.59 / 269 | 28-960/ 33-4700 | WHITE | A-27643 | 28-960/ 33-4700 | 11.59/ 269 | White | Flipper (old) | |
| A-28740 | Flipper | 6.02 / 207 | 26-790/ 33-3600 | TAN | A-28740 | 26-790/ 33-3600 | 6.02/ 207 | Tan | Flipper (new) | |
| A-29876 | Flipper | 2.36 / 202 | 23-560/ 33-3325 | ORANGE | A-29876 | 23-560/ 33-3325 | 2.36/ 202 | Orange | Flipper (new) | |
| A-30468 | Flipper | 11.59 / 269 | 28-960/ 33-4700 | WHITE | A-30468 | 28-960/ 33-4700 | 11.59/ 269 | White | Flipper (Old) | |
| A-31272 | Flipper | 44.8 / 268 | 30-2200/ 34-3575 | BLUE | A-31272 | 30-2200/ 34-3575 | 44.8/ 268 | Blue | Flipper |
Gottlieb Coil/Relay Coil Wire Turns and Resistance Chart
| Gottlieb Coil | Wire Gauge/Turns | Ohms | Wrapper Color | Usage |
|---|---|---|---|---|
| A-1118 | ? | 3.6 | black | feature bank relay |
| A-1496 | 23-635 | 2.95 | Yellow | Pops, Slings, General Purpose |
| A-4893 | 22-535 | 2.1 | Red | Up kicker, pop bumpers |
| A-5141 | ? | 1.7/ 6 | Green | Flipper (EM) |
| A-5141 y dot | ? | 1.0/ 6 | Green w/ yellow dot | Flipper High Power EM |
| A-5143 | ? | 3.6 | Black | 1960s Bell coil |
| A-5194 | 24-780 | 4.5 | Blue | Up kicker, Pop Bumpers, Slings |
| A-5195 | 26-1305 | 11.6 | White | Knocker, Outhole coil |
| A-7112 | ? | 155 | red or black | 120 volt start relay (1960s) |
| A-9736 | ? | 22 | ? | 1st ball relay (1975-1979) |
| A-9738 | ? | 32 | ? | tilt hold relay (1975-1979) |
| A-9740 | ? | 24 | ? | Game Over relay (1975-1979) |
| A-16570 | 27-1450 | 15.5 | Green | Ball release |
| A-16890 | 35-4000 | 231 | Orange | Q/T Relay sys1&80 |
| A-16890 | 35-4000 | 225 | Orange | Q/T relays |
| A-17875 | 24-560/31-1100 | 2.8/40 | Yellow | Flippers |
| A-17876 | 28-1750 | 24 | Tan | General Purpose |
| A-17891 | 22-850 | 3.35 | Red | 5 bank reset |
| A-17891 | 22-850 | 3.35 | White | 5 Target Reset |
| A-18102 | 24-1430 | 9.0 | Orange | target bank reset (uses 2) |
| A-18318 | 24-1130 | 6.7 | Orange | 4 target bank reset |
| A-18642 | 33-1590 | 58 | White | Memory relay, target trip relay |
| A-19300 | 25-1075 | 7.8 | Orange | Ball kicker |
| A-19508 | 32-1250 | 35 | Yellow | Target Trip/Relay |
| A-20095 | 22-450/31-900 | 1.55/35.5 | Red | Super flipper |
| A-20558 | 34-3400 | 156 | White | Gate relay |
| A-21741 | 23-575 | 2.5 | Orange | Vertical Up kicker |
| A-26450 | 29-2400 | 42 | Pink | General Purpose |
| A-26451 | 30-3000 | 65.8 | Blue | General Purpose |
| A-26452 | 35-2450 | 137 | Pink | Target Trip/Relay |
| A-26926 | 27-2650 | 32.8 | Blue | 3 Target Reset |
| A-27926 | 29-3475 | 64.7 | Blue | General Purpose |
| A-30297 | 30-2750 | 66.5 | Blue | General Purpose |
| Gottlieb Flipper Coil Chart | ||||
| Gottlieb Coil | Wire Gauge/Turns | Ohms | Wrapper Color | Usage |
| A-17875 | 24-560/ 31-1100 | 2.8/ 40 | Yellow | Flipper |
| A-20095 | 22-450/ 31-900 | 1.55/ 35.5 | Red | Super Flipper |
| A-24161 | 23-520/ 31-1050 | 2.2/ 40 | Blue S | small Flipper |
| A-25959 | 22-445/ 30-1225 | 3.85/ 202 | Red | Flipper (new) |
| A-26646 | 25-725/ 33-3470 | 4.57/ 201 | Blue | Flipper (new) |
| A-27642 | 27-950/ 33-3700 | 9.1/ 203 | Yellow | Flipper (new) |
| A-27643 | 28-960/ 33-4700 | 11.59/ 269 | White | Flipper (old) |
| A-28740 | 26-790/ 33-3600 | 6.02/ 207 | Tan | Flipper (new) |
| A-29876 | 23-560/ 33-3325 | 2.36/ 202 | Orange | Flipper (new) |
| A-30468 | 28-960/ 33-4700 | 11.59/ 269 | White | Flipper (Old) |
| A-31272 | 30-2200/ 34-3575 | 44.8/ 268 | Blue | Flipper |
Equivalent Gottlieb Solenoid & Relay Coil Substitution Chart
| Coil Number Equivalents | Type | Ohms | Usage |
|---|---|---|---|
| A-1119 | relay | 2.1 | in series usage with another relay |
| R20-1, A-9746 | relay | 1.5 | in series usage with another relay |
| R20-2, A-7688, A-9733, A-487 | relay | 2.5 | Interlock, in series usage with another relay |
| R20-3, A-9742, A-7834, A-1084 | relay | 10 | Tilt |
| R20-4, A-9735, A-7676, A-7835, A-5662, A-3891, A-489 | relay | 15 | most common relay used for general use |
| R20-5, A-9736, A-7677 | relay | 25 | 30v hold, Alt, Coin Lockout, 1st ball |
| R20-6, A-5294, A-3890 | relay | 385 | 120 volt R (reset) & S (start) relays |
| A-9740, A-6698, A-7846 | relay | 22 | Credit Hold, Game over hold, pop relay, vari-target |
| A-9738, A-7836, A-3498 | relay | 32 | 110v hold, 30v hold, Tilt Hold |
| A-6821, A-5457 | relay | general | |
| A-5141, A-1657, A-1546 | solenoid | 1.7, 6 | Flipper |
| A-5193, A-3104 | solenoid | reel drive | |
| A-5195, A-1943, A-622, A-12092 | solenoid | 12 | Chime, Ball release |
| A-5196, A-1318, A-9479, A-15555 | solenoid | Bank step-up, Bank reset | |
| A-9479, A-5196, A-1318, A-15555 | solenoid | bank reset | |
| A20-2, A-17875 (use high power winding) | solenoid | Counter | |
| A20-4, A-5197, A-7800, A-1640 | solenoid | Bank reset, Bank SU, Roto, turret shooter | |
| A20-6, A-5143, A-5194, A-940, A-1448, A-3537, A-2563 | solenoid | 3.6 | Reset, Kicker, Bell, Knocker |
| A20-8, A-4893, A-939, A-2435 | solenoid | Bell, Pops, Hole eject | |
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Zaccaria coils numbers specify the diameter of the wire and the number of turns. Example: D. 50 - S. 1600
The D. in the coil part number is the diameter of the wire in the coil in millimeters multiplied by 100.
The S. number is the number of turns of wire in the coil.
i.e. D=50 & S=1600 then a coil with .5mm diameter wire or approximately a 24 Gauge wire size with 1600 turns of wire should be used.
Flipper coils usually have two sets of coil numbers because they contain two coils of wire on the same solenoid coil form.
When substituting another brand of coil for a Zaccaria pinball coil, it is better to go down on the gauge of wire (larger sized wire) then change the number to turns on a coil. i.e. coil calls for 27 Gauge wire. However, a 26 gauge wire is the more common size, then a 26 Gauge wire should be used instead of a 28 or higher gauge wire. A large diameter wire can take more current flow without heating up then a small diameter wire.
The number of turns on a coil (S value) dictates the strength of the pull in
force of the coil (lower number of turns = stronger pull in or coil strength).
To find a Williams substitute coil number use the AWG spec from the National Bureau of Standards Chart below:
| Typical Application -- Zaccaria Coil | Coil Wrapper Color | Resistance | Williams Brand Coil Substitution (Approximated) | |
| Flipper Coil -- D.50 S.600 / D.14 S.5000 | Tan | 3.50 / 4800 Pull In/Hold coil | 24-600/35-5000 | |
| Flipper Coil -- D.45 S.500 / D.14 S.6000 (This coil doesn't have a plastic wire lug base) | Green | 3.50 / 5300 | Williams 25-500/35-6000 or Bally 25-500/34-5050 | |
| Small Sized Flipper | D.355 S.1000 / D.14 S.6000 | Blue | 10 / 5500 | 27-1000/35-6000 |
| Ball Trough Kicker | D.40 S.1200 | Pink | 110 | 26-1200 |
| Knocker | D.40 S.1200 | Pink | 110 | 26-1200 |
| Coin Door Lockout | D.12 S.6000 | |||
| Drop Targets Reset | D.50 S.1600 | Orange | 110 | 24-1600 Original coil has an unusual coil sleeve with an extended center section. A new Williams substitution coil will not come with this type of coil sleeve. |
| Pop Bumper | D.45 S.1000 | Yellow | 7.70 | 25-1000 |
| Ramp | D.355 S.1000 / D.14 S.6000 | Blue | 100 / 5500 | 27-1000/35-6000 |
| Slingshot | D.40 S.1200 | Pink | 110 | 26-1200 |
| AWG Wire Gauges | Wire Diameter (mm) | Linear electrical wire resistance (Ohm/km) | AWG Wire Gauges | Wire Diameter | Linear electrical wire resistance (Ohm/km) | Zaccaria = Willaims substitution (Approximated) | |
|---|---|---|---|---|---|---|---|
| 0000 | 11.7 | 0.17 | 19 | 0.912 | 26.40 | ||
| 000 | 10.4 | 0.21 | 20 | 0.812 | 33.30 | ||
| 00 | 9.27 | 0.26 | 21 | 0.723 | 41.99 | D. 71 - S. 1700 = 21 - 1700 | |
| 0 | 8.25 | 0.33 | 22 | 0.644 | 52.95 | ||
| 1 | 7.35 | 0.40 | 23 | 0.573 | 66.80 | ||
| 2 | 6.54 | 0.51 | 24 | 0.511 | 84.20 | D. 50 - S. 1600 = 24 -1600 or A 24 -1400 | |
| 3 | 5.83 | 0.64 | 25 | 0.455 | 106 | D. 45 - S. 1000 | |
| 4 | 5.19 | 0.81 | 26 | 0.405 | 134 | D. 40 - S. 1200 | |
| 5 | 4.62 | 1.03 | 27 | 0.361 | 169 | The total length of wire on a coil can not be calculated from the Ohms per km approximation data on this chart. General purpose Ohm meters are not accurate enough. Also, wire and test equipment lead resistance will vary with temperature. | |
| 6 | 4.12 | 1.30 | 28 | 0.321 | 213 | ||
| 7 | 3.66 | 1.63 | 29 | 0.286 | 268 | ||
| 8 | 3.26 | 2.06 | 30 | 0.255 | 339 | ||
| 9 | 2.91 | 2.60 | 31 | 0.227 | 427 | ||
| 10 | 2.59 | 3.28 | 32 | 0.202 | 538 | ||
| 11 | 2.30 | 4.13 | 33 | 0.180 | 679 | ||
| 12 | 2.05 | 5.21 | 34 | 0.160 | 856 | ||
| 13 | 1.83 | 6.57 | 35 | 0.143 | 1079 | ||
| 14 | 1.63 | 8.29 | 36 | 0.127 | 1361 | ||
| 15 | 1.45 | 10.4 | 37 | 0.113 | 1716 | ||
| 16 | 1.29 | 13.20 | 38 | 0.101 | 2164 | ||
| 17 | 1.15 | 16.60 | 39 | 0.0897 | 2729 | ||
| 18 | 1.02 | 20.90 | 40 | 0.0799 | 3441 |
Solenoid Coil Sleeve Chart
Also see Coil sleeve length charts
All new replacement solenoid coils are shipped with the proper length and style of coil sleeve.
Replacing old dirty coil sleeves and cleaning the coil plunger are the least expensive ways to cure sluggish solenoids.
Replacement of metal coil sleeves with plastic sleeves is mandatory as the nylon plastic sleeves perform better and last longer.
![]() 1-3/4" This 1-3/4" nylon coil sleeve is the most commonly used length on all brands of pinball machines. Typically found on pop bumpers, slingshots, kickers, and early solid state and electromechanical flipper assemblies. Reference Part Numbers: Williams/Bally 03-7066. Stern/Sega/Data East 545-5411-00. | ![]() 2-3/16" This nylon sleeve is used on Williams post- 1980, Bally post- 1988, Stern post- 1999, Data East, and Sega flipper assemblies. This is the standard flipper coil sleeve replacement for all newer model solid state pinball machines. Reference Part Numbers: Williams/Bally 03-7066-5. | ![]() 2-1/4" This is the proper nylon coil sleeve for Williams System 6 and System 7 flipper assemblies. This coil sleeve is slightly longer than the much more common 2-3/16" sleeve. The extra 1/16 inch is needed to keep the flipper plunger return spring from getting wedged between the plunger and coil. See our Arcade Tech Tips page for more info on coil and flipper sleeves. |
|
This type of special sleeve is getting harder to find, but is essential to proper ball shooter rod operation. NOTE: Check for bent, dirty or "mushroomed tipped" shooter rods and for bad rod springs when replacing this sleeve. |
Bell, Chime or V.U.K. coil sleeve. Notice the extra length of sleeve after the coil stop ridge. This type of coil sleeve is used with coil stops with a centered hole. The coil's plunger passes through the coil stop to allow it a greater travel distance. The greater travel equates to more momentum and louder bell sounds. A VUK uses this greater travel to lift the game ball much higher then it could if the plunger core was stopped by a normal coil stop. Allowing it to thrust the ball though a metal ramp above the VUK unit. | ||
| G=Gottlieb, W=Williams, WB=new B and W part number (after W bought B) CC/OS=Chicago Coin / Old Stern (PN), S/S/DE=new Stern / Sega / Data East (?)=(original sleeve manufacturer) - This is Not part of the part number |
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|---|---|---|---|---|---|
| Coil Sleeve Length in Inches | Manufacture's Part Number | Bell/Chime/Up-kicker/V.U.K. | Manufacture's Part Number | Specialty | |
| 1-1/4" | A8111 (G), 03-7066-1 (WB), 130-1536 / 91-1509 (CC/OS) | 1-3/16" - 1-1/2" | 4A-159-1 (CC/OS) | ||
| 1-3/8" | 143-808 (CC/OS) | 1-5/8" - 2" | A6087 (G), 03-7067 (WB), 4A-159 (CC/OS) | Bell (short) | |
| 1-5/8" - standard length for both G and B | A5064 (G) | 1-9/16" - 1-13/16" | 03-7067-3 (WB) | ||
| 1-3/4" - standard length for W | 545-5031-00 (S/S/DE), 03-7066 (WB) | 1-11/16" - 1-13/16" | 545-5076-00 / 545-5076-01 (S/S/DE) 21411 (G) | ||
| 1-13/16" | A5065 (G), 03-7066-3 (WB) | 2-1/16" - 2-1/4" | 25605 (G), 545-5709-00 (S/S/DE), 03-7067-5 (WB) | ||
| 1-15/16" - 9/16" Diameter | 2A-232 (CC/OS) | 2-1/2" - 2-5/8" | 03-7067-1 (WB) | ||
| 2-1/16" | 03-7066-4 (WB) | 2-1/2" - 2-3/4" | A5142 (G), 545-5847-00 (S/S/DE), 03-7067-6 (WB), 167-800 (CC/OS) | Bell (long length) | |
| 2-3/16" | 545-5388-00 (S/S/DE), 03-7066-5 (WB) | The short bell length is used to ring a small sized bell mounted close to the coil. The long Bell length is used on knockers, bells, and VUKs were the solenoid core must move a great distance without falling out of the coil. This sleeve usually sticks way out of the coil. | |||
| 2-15/16" - 9/16" Diameter Sleeve | 03-7068 (WB) | All sleeves listed on this chart are 1/2 inch diameter unless indicated otherwise. Bell/Chime/Up-Kicker/V.U.P. are listed by two flange lengths by the following method, Bell or Flanged Sleeve Length=To be included in the next update. | |||
| 2-1/2" | A5172 (G) | ||||