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CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Darlington NPN 100V 5A 3-Pin (3+Tab) TO-220AB transistor in TO-220 package.
To see if your transistor is bad, use a digital multimeter set to the diode check mode.
(-) = negative/black test lead
(+) = positive/red test lead.
Pin 1 = the pin with a dot above it.
For TIP122s, these are typical voltage drop values when measured with a typical multimeter in diode test mode.
When replacing TIP122 transistors, verify that the diode on the coil in question is not shorted, or the replacement will fail.FromToValue1 (-)2 (+)open1 (-)3 (+)1.84Pin 2 (-)Pin 3 (+)0.55 VPin 1 (+)Pin 2 (-)0.63 VPin 1 (+)Pin 3 (-)0.75VPin 2 (+)Pin 1 (-)openPin 2 (+)Pin 3 (-)open
Reference:
5162-09410-00Data East / Sega / Stern 110-0067-00Wico 21-309400TIP102 is excellent substitute
