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CZT127

Public Made by Adom

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Changjing Darlington Transistors, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorsczt127
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs czt127: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
viewers czt127: viewers · Ray 1mo ago
czt127-etched.fit.json czt127: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
czt127-etched.glb czt127: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
czt127-etched.step czt127: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
czt127.glb Publish 0.1.0 · Ray 1mo ago
czt127.kicad_mod Publish 0.1.0 · Ray 1mo ago
czt127.kicad_sym Publish 0.1.0 · Ray 1mo ago
czt127.lbr Publish 0.1.0 · Ray 1mo ago
czt127.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json czt127: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
README.md czt127: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

CZT127

Changjing · Darlington Transistors · SOT-223

CZT127 from Changjing, in a SOT-223. 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 of the PNP Darlington transistor. VEBO max = -5 V. Drive current sets collector current via combined Darlington gain (hFE ≥ 1000 typical at IC = -3 A, VCE = -3 V).
2 C passive Collector of the PNP Darlington transistor. VCBO max = -100 V, VCEO max = -100 V, IC(continuous) = -5 A, PC = 1 W. Tab (large center pad) of the SOT-223 is internally connected to the collector.
3 E passive Emitter of the PNP Darlington transistor. VBE(on) ≈ -2.5 V at IC = -3 A (two Vbe drops due to Darlington). VCE(sat) ≤ -2 V at IC = -3 A, IB = -12 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-223
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: CZT127
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: czt127-etched.step / czt127-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); czt127.step / czt127.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (3 pp, sha256 f209bc4fcfb6864a, retrieved 2026-08-17, tier: lcsc)
  • 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