component

SZMMSZ5270BT1G

Public Made by Adom

by adom

onsemi Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, 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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docs Publish 0.1.0 · Ray 9d ago
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package.json Publish 0.1.0 · Ray 9d ago
page.json Set visibility: public · Ray 9d ago
README.md Publish 0.1.0 · Ray 9d ago
szmmsz5270bt1g-etched.glb Publish 0.1.0 · Ray 9d ago
szmmsz5270bt1g-etched.step szmmsz5270bt1g: factory component page (tier=lcsc) · Ray 9d ago
szmmsz5270bt1g-hero.glb szmmsz5270bt1g: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
szmmsz5270bt1g-hero.overlay.json Publish 0.1.0 · Ray 9d ago
szmmsz5270bt1g.glb Publish 0.1.0 · Ray 9d ago
szmmsz5270bt1g.kicad_mod Publish 0.1.0 · Ray 9d ago
szmmsz5270bt1g.kicad_sym Publish 0.1.0 · Ray 9d ago
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szmmsz5270bt1g.step Publish 0.1.0 · Ray 9d ago

SZMMSZ5270BT1G

onsemi · Zener Diodes · SOD-123

SZMMSZ5270BT1G from onsemi, 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 CATHODE passive Cathode terminal of the Zener diode, identified on the package by the polarity band (STYLE 1: Pin 1 = Cathode).
2 ANODE passive Anode terminal of the Zener diode, opposite the polarity-band cathode (STYLE 1: Pin 2 = Anode).

Key specifications

Parameter Value
Manufacturer onsemi
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
Reverse Zener voltage (nominal) VZ 86.45 91 95.55 V @ IZT = 1.4 mA; TA = 25°C; B suffix (5% tolerance) 3
Zener voltage tolerance (B suffix) -5 5 % On nominal Zener voltage (Note 3) 3
Maximum Zener impedance ZZT 400 ohm @ IZT = 1.4 mA; IZ(AC) = 0.1 IZ(DC), f = 1 kHz (Note 5) 3
Maximum Zener impedance ZZK 2300 ohm @ IZK = 0.25 mA; IZ(AC) = 0.1 IZ(DC), f = 1 kHz (Note 5) 3
Reverse leakage current IR 0.1 µA @ VR = 69 V 3
Forward voltage VF 0.9 V @ IF = 10 mA; 5% table (B suffix) 3
Total power dissipation on FR-5 board PD 500 mW TL = 75°C (Note 1) 1
Derating above 75°C PD 6.7 mW/°C Derated above TL = 75°C 1
Thermal resistance, junction-to-ambient RJA 340 °C/W Note 2 1
Thermal resistance, junction-to-lead RJL 150 °C/W Note 2 1
Junction and storage temperature range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: SZMMSZ5270BT1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: szmmsz5270bt1g-etched.step / szmmsz5270bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); szmmsz5270bt1g.step / szmmsz5270bt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 c22dd8fe4fe15c0e, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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