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JSM421

Public Made by Adom

by adom

JSMSEMI Hall Sensor, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs jsm421: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers jsm421: viewers · Ray 1mo ago
jsm421-etched.fit.json jsm421: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm421-etched.glb jsm421: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm421-etched.step jsm421: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
jsm421.glb Publish 0.1.0 · Ray 1mo ago
jsm421.kicad_mod Publish 0.1.0 · Ray 1mo ago
jsm421.kicad_sym Publish 0.1.0 · Ray 1mo ago
jsm421.lbr Publish 0.1.0 · Ray 1mo ago
jsm421.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json jsm421: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 21h ago
README.md jsm421: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 19d ago

JSM421

JSMSEMI · Hall Sensor · SOT-23

JSM421 from JSMSEMI, 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 VSUP power_in Supply voltage input. Operating range 3.8 V to 40 V (absolute max -60 V to +60 V). Typical supply current 6 mA (max 9 mA at VSUP = 5 V). Includes reverse-voltage protection.
2 GND power_in Ground / device return.
3 VOUT output Open-collector Hall-switch output; requires an external pull-up resistor (typ RL = 4.7 kΩ). Sinks up to 30 mA (abs max 40 mA), Vsat ≤ 0.4 V at Iout = 20 mA. Output leakage ≤ 10 µA. Absolute max output voltage -0.5 V to 60 V.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOT-23
Category Sensor
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • JSM421 SOT23
  • JSM421 TO92S

CAD (KiCad official)

  • Symbol: JSM421
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: jsm421-etched.step / jsm421-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jsm421.step / jsm421.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (8 pp, sha256 475d9cfb89c0da81, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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).

Datasheet PDF