Replacement bridge rectifier and diode ratings

The stock WPC bridge is 35 A at 200 V, marked MB3502W or MB352W (MB metal case, 35 A, 02 = 200 V, W = wire leads); the Williams part is 5100-09690. A higher amp or voltage rating, such as 35 A 400 V, is fine; a 50 V bridge is not, and check the marking since mislabeled 10 A 100 V parts (1001W) turn up. WPC-95 rectifier diodes are P600D (6A4/6A400) or NTE5814; a 200 V 6A2 also works, and a 6A50 will do in a pinch.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Bridge rectifiers to use on WPC-S and earlier driver boards
• WPC-95 uses discrete P600D diodes instead of bridges
• Pre-WPC-95 resets: replace BR2, C5, C4 and the J101 pins together
• Testing a bridge rectifier out of circuit
• Testing a WPC-95 rectifier diode
• Mount replacement bridges raised off the board
• WPC power driver bridge rectifiers and +5 V regulator
• Replacing a driver board bridge rectifier without tearing traces

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Two, Clay Harrell (pinrepair.com)