component
BSR57
Public Made by Adomby adom
onsemi JFETs, SOT-23-3. Datasheet-verified pinout, 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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README
markdownBSR57
onsemi · JFETs · SOT-23-3
BSR57 from onsemi, in a SOT-23-3. 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 | Drain | output | Drain terminal with maximum drain-gate voltage of 40 V and drain-source on-voltage not exceeding 0.5 V at VGS = 0 V and ID = 10 mA. |
| 2 | Source | power_in | Source terminal providing the return path and voltage reference for the N-channel JFET. |
| 3 | Gate | input | Gate terminal with gate-source cut-off voltage range of 2.0 V to 6.0 V and maximum forward gate current rating of 50 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23-3 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
BSR57 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
bsr57-etched.step/bsr57-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsr57.step/bsr57.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (3 pp, sha256
9b2064bcb1fbbdcb, retrieved 2026-09-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).