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onsemi BD439G BJTs

Medium Power NPN Bipolar Power Transistor, TO-225, 500-BLKBX

105,000 ActiveonsemiTO-225$0.84
BD439G TO-225 package illustration

Same model may have multiple batches, images only for reference.

BD439G
Manufacturer
Part Number (MPN)
BD439G
Detailed Description
Medium Power NPN Bipolar Power Transistor, TO-225, 500-BLKBX
Package
TO-225
Lifecycle Status
Active
Datasheet
PDF BD439G Datasheet
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Technical Specifications

onsemi BD439G BJTs technical specifications.

General

Series
BD439
RoHS
Yes
Package / Case
TO-225AA, TO-126-3
Mounting Type
Through Hole
Operating Temperature
-55°C ~ 150°C (TJ)
Lifecycle Status
Active
Dc Current Gain Hfe Min IC Vce
40 @ 500mA, 1V
Power Max
36 W
Frequency Transition
3MHz
Transistor Type
NPN

Alternate Parts Comparison (BD439G vs BD140G vs BD682G vs BD136G)

Side-by-side technical parameter comparison of related primary models in this product family.

This PartAlternate PartsAlternate PartsAlternate Parts
Package / CaseTO-225AA, TO-126-3TO-225AA, TO-126-3TO-225AA, TO-126-3TO-225AA, TO-126-3
Mounting TypeThrough HoleThrough HoleThrough HoleThrough Hole
Operating Temperature-55°C ~ 150°C (TJ)-55°C ~ 150°C (TJ)-55°C ~ 150°C (TJ)-55°C ~ 150°C (TJ)
Lifecycle StatusActiveActiveActiveActive
Current Collector Cutoff Max100µA (ICBO)100nA (ICBO)500µA100nA (ICBO)
Current Collector IC Max4 A1.5 A4 A1.5 A
Dc Current Gain Hfe Min IC Vce40 @ 500mA, 1V40 @ 150mA, 2V750 @ 1.5A, 3V40 @ 150mA, 2V
Power Max36 W1.25 W40 W1.25 W
Transistor TypeNPNPNPPNP - DarlingtonPNP
Vce Saturation Max Ib IC800mV @ 300mA, 3A500mV @ 50mA, 500mA2.5V @ 30mA, 1.5A500mV @ 50mA, 500mA
Voltage Collector Emitter Breakdown Max60 V80 V100 V45 V
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Cross Reference

Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .

This part is listed as a cross for

More Parts in BJTs

Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.