component
STR2550
Public Made by Adomby adom
STMicroelectronics Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownSTR2550
STMicroelectronics · Bipolar (BJT) · SOT-23
STR2550 from STMicroelectronics, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | B | input | Base control terminal with emitter-base breakdown voltage of -7V and DC current gain (hFE) of 100-300 at IC = -50mA, VCE = -10V. |
| 2 | E | passive | Emitter terminal with base-emitter saturation voltage of -0.3V at IC = -50mA, IB = -10mA and emitter-base breakdown voltage of -7V. |
| 3 | C | passive | Collector terminal with maximum continuous current rating of -0.5A, peak current (tp<5ms) of -1A, collector-emitter voltage rating of -500V, and total power dissipation of 500mW at TA = 25°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
STR2550 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
str2550-etched.step/str2550-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);str2550.step/str2550.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (11 pp, sha256
d910fb98b5b11533, retrieved 2026-09-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).