component
2DA1971-7
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-89. Pinout cross-checked by two models 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
markdown2DA1971-7
Diodes Incorporated · Bipolar (BJT) · SOT-89
2DA1971-7 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 | passive | Base of the PNP transistor; base current IB is limited to -250 mA and VEBO to -7 V. |
| 2 | C | passive | Collector, also connected to the exposed collector tab; VCEO -400 V, IC -0.5 A continuous, ICM -1 A peak. |
| 3 | E | passive | Emitter of the PNP transistor; emitter-base breakdown voltage BVEBO is -7 V at IE = -100 µA. |
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 Breakdown Voltage | BVCBO | -400 | V | IC = -100µA | 4 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | -400 | V | IC = -1mA | 4 | ||
| Emitter-Base Breakdown Voltage | BVEBO | -7 | V | IE = -100µA | 4 | ||
| Collector-Emitter Cut-off Current | ICES | -100 | nA | VCE = -320V | 4 | ||
| Collector Cut-off Current | ICBO | -100 | nA | VCB = -320V | 4 | ||
| Emitter Cut-off Current | IEBO | -100 | nA | VEB = -6V | 4 | ||
| Static Forward Current Transfer Ratio | hFE | 140 | IC = -20mA, VCE = -5V | 4 | |||
| Collector-Emitter Saturation Voltage | VCE(sat) | -250 | mV | IC = -100mA, IB = -10mA | 4 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -400 | mV | IC = -200mA, IB = -40mA | 4 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -0.75 | -0.9 | V | IC = -100mA, IB = -10mA | 4 | |
| Base-Emitter Turn-On Voltage | VBE(on) | -0.8 | V | IC = -200mA, VCE = -10V | 4 | ||
| Collector-Base Voltage | VCBO | -400 | V | TA = +25°C unless otherwise specified | 2 | ||
| Collector-Emitter Voltage | VCEO | -400 | V | TA = +25°C unless otherwise specified | 2 | ||
| Emitter-Base Voltage | VEBO | -7 | V | TA = +25°C unless otherwise specified | 2 | ||
| Continuous Collector Current | IC | -0.5 | A | TA = +25°C unless otherwise specified | 2 | ||
| Peak Pulse Current | ICM | -1 | A | TA = +25°C unless otherwise specified | 2 | ||
| Base Current | IB | -250 | mA | TA = +25°C unless otherwise specified | 2 | ||
| Power Dissipation | PD | 1.5 | W | Note 5: 25mm x 25mm 1oz Cu on single-sided FR4, still air, steady-state | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 2 | ||
| Electrostatic Discharge - Human Body Model | ESD HBM | 8000 | V | JEDEC Class 3B | 2 | ||
| Electrostatic Discharge - Machine Model | ESD MM | 400 | V | JEDEC Class C | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 83 | °C/W | Note 5: 25mm x 25mm 1oz Cu on single-sided FR4, still air | 2 | ||
| Thermal Resistance, Junction to Leads | RθJL | 10.4 | °C/W | Note 6: junction to solder point on exposed collector pad | 2 |
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: Finish - Matte Tin Plated Leads. Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
2DA1971-7 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
2da1971-7-etched.step/2da1971-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2da1971-7.step/2da1971-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (7 pp, sha256
f820d98417d3f2c4, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).