Decoding a MosFET part number

In a generic number such as 20N10L, the first digits are the drain current (20 A), N or P is the channel type, the next digits are the voltage (10 means 100 V) and a trailing L means logic-level drive. In IRL530, IR is the maker and L is logic level.

Systems

• Gottlieb System 3

Related tips

• Spare MosFETs for the driver boards
• Diode-testing the 12N10L/IRL530 MosFETs
• Only logic-level (L) MosFETs work on the driver board
• Diode-testing the 12P06 strobe MosFETs

Source: Repairing Gottlieb System 3 Electronic Pinball Games from 1989 to 1996, Clay Harrell (pinrepair.com)