Motorola SJ4693 NPN Silicon Power Transistor -PAIR
$49.99
Genuine Motorola SJ4693 NPN silicon power transistors offered as a tested pair (2 pieces). Made in USA and manufactured by Motorola in the classic TO-3 metal can package.
These original Motorola semiconductors are increasingly difficult to locate and remain desirable among restoration specialists, radio technicians, electronics repair shops, industrial maintenance departments, and collectors seeking authentic USA-manufactured replacement components.
The SJ4693 utilizes rugged TO-3 metal can construction and integrated protection diode technology. These devices are well suited for restoration of legacy equipment, industrial electronics maintenance, power supply repairs, communications equipment servicing, and replacement of obsolete Motorola semiconductor devices.
This listing includes the exact pair shown in the photographs. Both transistors retain original Motorola markings, original date codes, classic TO-3 construction, and have been individually verified prior to cataloging.
Origin Tracker
Obsolete Stock
Legacy or discontinued stock no longer in normal production flow. Future supply may be limited.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Vintage audio amplifier restoration
Power supply repair and restoration
Industrial control equipment
Communications equipment maintenance
Amateur radio equipment repair
CB radio equipment restoration
Vintage test equipment repair
Legacy Motorola semiconductor replacement
Obsolete electronics maintenance
Educational semiconductor study
Electronics collections and displays
Custom electronics projects utilizing TO-3 power devices
RF Boneyard Bench Notes
NPN Silicon BJT
Red-E Green-C Blue-B
hFE=15 at Ic=4.99mA
Vbe=0.611V at Ib=1.00mA
Vbe=0.838V at Ib=5.00mA
VceSat=0.264V at Ic=5.0mA and Ib=1.00mA
IcLeak=0.000mA
Rshunt=4700R
with protection diode
NPN Silicon BJT
Red-B Green-C Blue-E
hFE=42 at Ic=5.00mA
Vbe=0.604V at Ib=1.00mA
Vbe=0.820V at Ib=5.00mA
VceSat=0.250V at Ic=5.0mA and Ib=1.00mA
IcLeak=0.000mA
Rshunt=6800R
with protection diode
Both Motorola SJ4693 transistors tested good.
Zero collector leakage detected on both devices.
Protection diode present on both devices.
Sold as a tested pair.
Not gain matched (hFE 15 and hFE 42).
Ask the bench before you buy.
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