Details
2 QUADRAFLEX 2SB539A NEC PNP HIGH GAIN POWER TRANSISTORS NOS
NEC 2SB539A 180 VOLT 16 AMP Power Transistors. PNP type.
Numbers on case are B539A, Manufacturer Date codes are S69A, R70A and some are R68A, . Equivalent is ECG285.
New old stock purchased from Quadraflex in about 1988 when they went out of business, never used.
BEWARE OF LOW GAIN COUNTERFEIT TRANSISTORS. AUDIO AMPLIFIER OUTPUT TRANSISTORS HAVE OVER 60 GAIN, REGULATORS ARE 20 TO 30.
* Description: 2SB539A PNP-Silicon Audio Power Amplifier
* Collector to Base Volts: 180V
* Max. Collector Current Amps: 16A
* Max. Device Diss PD Watts: 150W
* Freq. in MHz: 6MHz,
* Current Gain hFE: 70 Minimum,
* Case Type: TO-3
