component

2N3055AG

Public Made by Adom

by adom

onsemi Bipolar Transistors - BJT, TO-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2N3055AG

onsemi · Bipolar Transistors - BJT · TO-3

2N3055AG from onsemi, in a TO-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Base input Base terminal of the 2N3055AG NPN transistor, rated for a continuous base current IB of 7.0 Adc maximum.
2 Emitter passive Emitter terminal of the 2N3055AG NPN transistor, with an emitter-base voltage VEBO of 7.0 Vdc.
3 Collector (Case) passive Collector, electrically connected to the metal case, with a continuous collector current IC of 15 Adc.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-3
Category Triode/MOS Tube/Transistor
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Collector-Emitter Sustaining Voltage VCEO(sus) 60 Vdc IC = 200 mAdc, IB = 0 2
Collector Cutoff Current ICEO 0.7 mAdc VCE = 30 Vdc, VBE(off) = 0 Vdc 2
Collector Cutoff Current ICEV 5 mAdc VCEV = Rated Value, VBE(off) = 1.5 Vdc 2
Collector Cutoff Current ICEV 30 mAdc VCEV = Rated Value, VBE(off) = 1.5 Vdc, TC = 150 C 2
Emitter Cutoff Current IEBO 5 mAdc VEB = 7.0 Vdc, IC = 0 2
Second Breakdown Collector Current with Base Forward Biased IS/b 1.95 Adc t = 0.5 s non-repetitive, VCE = 60 Vdc 2
Collector-Emitter Saturation Voltage VCE(sat) 1.1 Vdc IC = 4.0 Adc, IB = 400 mAdc 2
Collector-Emitter Saturation Voltage VCE(sat) 3 Vdc IC = 10 Adc, IB = 3.3 Adc 2
Collector-Emitter Saturation Voltage VCE(sat) 5 Vdc IC = 15 Adc, IB = 7.0 Adc 2
Base-Emitter On Voltage VBE(on) 0.7 1.8 Vdc IC = 4.0 Adc, VCE = 4.0 Vdc 2
Delay Time td 0.5 s VCC = 30 Vdc, IC = 4.0 Adc, IB1 = IB2 = 0.4 Adc, tp = 25 s, duty cycle 2% 2
Rise Time tr 4 s VCC = 30 Vdc, IC = 4.0 Adc, IB1 = IB2 = 0.4 Adc, tp = 25 s, duty cycle 2% 2
Storage Time ts 3 s VCC = 30 Vdc, IC = 4.0 Adc, IB1 = IB2 = 0.4 Adc, tp = 25 s, duty cycle 2% 2
Fall Time tf 6 s VCC = 30 Vdc, IC = 4.0 Adc, IB1 = IB2 = 0.4 Adc, tp = 25 s, duty cycle 2% 2
Collector-Emitter Voltage VCEO 60 Vdc 2N3055AG 1
Collector-Base Voltage VCBO 100 Vdc 2N3055AG 1
Collector-Emitter Voltage Base Reversed Biased VCEV 100 Vdc 2N3055AG 1
Emitter-Base Voltage VEBO 7 Vdc 1
Collector Current - Continuous IC 15 Adc 1
Base Current IB 7 Adc 1
Total Device Dissipation PD 115 W TC = 25 C, 2N3055AG 1
Derate above 25 C PD 0.65 W/C 2N3055AG 1
Operating and Storage Junction Temperature Range TJ, Tstg -65 200 C 1
Thermal Resistance, Junction-to-Case RθJC 1.52 C/W 2N3055AG 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing pet Second Breakdown Collector Current with Base Forward Biased (t = 0.5 s non−repetitive) 2N3055AG 2

CAD (KiCad official)

  • Symbol: 2N3055AG
  • Footprint: Package_TO_SOT_THT:TO-3
  • 3D model: TO-3 (KiCad packages3D, STEP)
  • 3D model files: 2n3055ag-etched.step / 2n3055ag-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2n3055ag.step / 2n3055ag.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (8 pp, sha256 edc0616440cb77a6, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF