component
BSR33TA
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-89. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBSR33TA
Diodes Incorporated · Bipolar (BJT) · SOT-89
BSR33TA from Diodes Incorporated, in a SOT-89. 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 | B | input | Base of the PNP transistor; the datasheet shows it as the bottom pin in the top-view pin-out and gives VEBO of -5V and a peak base current IBM of -200mA. |
| 2 | C | passive | Collector of the PNP transistor, the middle pin, which is also connected to the exposed collector tab; the datasheet gives VCEO of -80V, VCBO of -90V, continuous IC of -1A and peak ICM of -2A. |
| 3 | E | passive | Emitter of the PNP transistor; the datasheet shows it as the top pin in the top-view pin-out. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-89 |
| Category | Transistors/Thyristors |
| 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-Base Voltage | VCBO | -90 | V | @TA = +25°C | 2 | ||
| Collector-Emitter Voltage | VCEO | -80 | V | @TA = +25°C | 2 | ||
| Emitter-Base Voltage | VEBO | -5 | V | @TA = +25°C | 2 | ||
| Continuous Collector Current | IC | -1 | A | @TA = +25°C | 2 | ||
| Peak Pulse Current | ICM | -2 | A | @TA = +25°C | 2 | ||
| Peak Base Current | IBM | -200 | mA | @TA = +25°C | 2 | ||
| Power Dissipation | PD | 1 | W | Note 6: 15mm x 15mm 1oz copper, single-sided 1.6mm FR4, still air | 2 | ||
| Power Dissipation | PD | 1.5 | W | Note 7: 25mm x 25mm 1oz copper | 2 | ||
| Power Dissipation | PD | 2.1 | W | Note 8: 50mm x 50mm 1oz copper | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RΘJA | 125 | °C/W | Note 6: 15mm x 15mm 1oz copper, still air | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RΘJA | 83 | °C/W | Note 7: 25mm x 25mm 1oz copper | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RΘJA | 60 | °C/W | Note 8: 50mm x 50mm 1oz copper | 2 | ||
| Thermal Resistance, Junction to Lead | RΘJL | 13 | °C/W | Note 9: junction to solder point on exposed collector pad | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| Electrostatic Discharge - Human Body Model | ESD HBM | 4000 | V | JEDEC Class 3A (Note 10) | 2 | ||
| Electrostatic Discharge - Machine Model | ESD MM | 400 | V | JEDEC Class C (Note 10) | 2 | ||
| Collector-Base Breakdown Voltage | BVCBO | -90 | V | IC = -100μA | 4 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | -80 | V | IC = -10mA (Note 11) | 4 | ||
| Emitter-Base Breakdown Voltage | BVEBO | -5 | V | IE = -100μA | 4 | ||
| Collector Cutoff Current | ICBO | -100 | nA | VCB = -60V | 4 | ||
| Collector Cutoff Current | ICBO | -50 | µA | VCB = -60V, TJ = +150°C | 4 | ||
| DC current transfer static ratio | hFE | 30 | IC = -100µA, VCE = -5V (Note 11) | 4 | |||
| DC current transfer static ratio | hFE | 100 | IC = -100mA, VCE = -5V (Note 11) | 4 | |||
| DC current transfer static ratio | hFE | 50 | IC = -500mA, VCE = -5V (Note 11) | 4 | |||
| DC current transfer static ratio | hFE | 300 | 4 | ||||
| Collector-Emitter Saturation Voltage | VCE(sat) | -0.25 | V | IC = -150mA, IB = -15mA (Note 11) | 4 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -0.5 | V | IC = -500mA, IB = -50mA (Note 11) | 4 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -1 | V | IC = -150mA, IB = -15mA (Note 11) | 4 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -1.2 | V | IC = -500mA, IB = -50mA (Note 11) | 4 | ||
| Transitional Frequency | fT | 100 | MHz | IC = -50mA, VCE = -10V, f = 35MHz | 4 | ||
| Output capacitance | Cobo | 20 | pF | VCB = -10V, f = 1MHz | 4 | ||
| Input Capacitance | Cibo | 120 | pF | VCB = -0.5V, f = 1MHz | 4 | ||
| Turn-On Time | Ton | 500 | ns | VCC = -20V, IC = -100mA | 4 | ||
| Turn-Off Time | Toff | 650 | ns | IB1 = IB2 = -5mA | 4 |
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 |
|---|---|---|---|---|
| contacts | tin | Terminals: Matte Tin Finish, Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
BSR33TA - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
bsr33ta-etched.step/bsr33ta-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsr33ta.step/bsr33ta.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (7 pp, sha256
28fcff903fd6f969, retrieved 2026-10-21, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).