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MMDT5451

Public Made by Adom

by adom

Changjing Bipolar (BJT), SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMDT5451

Changjing · Bipolar (BJT) · SOT-363

MMDT5451 from Changjing, in a SOT-363. 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 E1 passive Emitter of the NPN 5551 transistor (Q1), rated VEBO 6 V, IC 0.2 A continuous.
2 B1 passive Base of the NPN 5551 transistor (Q1), with hFE2 of 100 to 300 at VCE=5V, IC=10mA.
3 C2 passive Collector of the PNP 5401 transistor (Q2), rated VCEO -150 V and IC -0.2 A continuous.
4 E2 passive Emitter of the PNP 5401 transistor (Q2), rated VEBO -5 V.
5 B2 passive Base of the PNP 5401 transistor (Q2), with hFE2 of 100 to 300 at VCE=-5V, IC=-10mA.
6 C1 passive Collector of the NPN 5551 transistor (Q1), rated VCEO 160 V and IC 0.2 A continuous.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-363
Category Transistors/Thyristors
Pins 6

CAD (KiCad official)

  • Symbol: MMDT5451
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SOT-363 (KiCad packages3D, STEP)
  • 3D model files: mmdt5451-etched.step / mmdt5451-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmdt5451.step / mmdt5451.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 34d82fd89ad2aaa8, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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).

Datasheet PDF