component

BZT52C39Q

Public Made by Adom

by adom

JSMSEMI Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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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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BZT52C39Q

JSMSEMI · Zener Diodes · SOD-123

BZT52C39Q from JSMSEMI, in a SOD-123. 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 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOD-123
Category Diodes
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Zener voltage VZ 37.05 39 40.95 V @ IZT = 2 mA 2
Maximum Zener impedance ZZT 130 Ω @ IZT = 2 mA 2
Maximum Zener impedance (knee) ZZK 350 Ω @ IZK = 0.5 mA 2
Temperature coefficient TC 33.4 41.2 mV/C @ IZT = 2 mA 2
Maximum reverse current IR 0.1 A @ VR = 27.3 V 2
Zener voltage tolerance (C-series) -5 5 % C-series, per features list 1
Forward voltage VF 0.9 V @ IF = 10 mA 1
Power dissipation (collector) PC 500 mW TA = 25C 1
Junction temperature range TJ -55 150 C TA = 25C 1
Storage temperature range TSTG -65 150 C TA = 25C 1
Thermal resistance, junction-to-ambient RθJA 250 C/W TA = 25C 1
Thermal resistance, junction-to-case RθJC 140 C/W TA = 25C 1

CAD (KiCad official)

  • Symbol: BZT52C39Q
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: bzt52c39q-etched.step / bzt52c39q-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzt52c39q.step / bzt52c39q.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (3 pp, sha256 c16c7f42fec1d215, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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