component

SZMMSZ5246BT1G

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
viewers szmmsz5246bt1g: viewers · Ray 9d ago
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
szmmsz5246bt1g-etched.glb Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g-etched.step szmmsz5246bt1g: factory component page (tier=lcsc) · Ray 9d ago
szmmsz5246bt1g-hero.glb szmmsz5246bt1g: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
szmmsz5246bt1g-hero.overlay.json Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g.glb Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g.kicad_mod Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g.kicad_sym Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g.lbr Publish 0.1.0 · Ray 9d ago
szmmsz5246bt1g.step Publish 0.1.0 · Ray 9d ago

SZMMSZ5246BT1G

onsemi · Zener Diodes · SOD-123

SZMMSZ5246BT1G 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; the device is used as a Zener voltage regulator with the cathode as the regulated reference side.
2 Anode passive Anode terminal of the Zener diode, which is the terminal opposite the cathode polarity band.

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 (VZ), min VZ 15.2 16 16.8 V @ IZT = 7.8 mA; B suffix (5%) tolerance; TA = 25°C 3
Maximum Zener Impedance ZZT 17 Ω @ IZT = 7.8 mA; AC IZ = 0.1 IZ(dc), f = 1 kHz 3
Maximum Zener Impedance ZZK 600 Ω @ IZK = 0.25 mA 3
Reverse Leakage Current IR 0.1 µA @ VR = 12 V 3
Forward Voltage VF 0.9 V @ IF = 10 mA 3
Zener voltage tolerance (B suffix, standard) -5 5 % Standard tolerance on nominal Zener voltage (B suffix) 3
Total Power Dissipation on FR-5 Board PD 500 mW FR-5 board (3.5 x 1.5 in, minimum footprint), @ TL = 75°C 1
Derating above 75°C PD 6.7 mW/°C Derated above TL = 75°C 1
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1
Thermal Resistance, Junction-to-Ambient RJA 340 °C/W Note 2 (infrared scan method), FR-5 board 1
Thermal Resistance, Junction-to-Lead RJL 150 °C/W Note 2 (infrared scan method) 1

CAD (KiCad official)

  • Symbol: SZMMSZ5246BT1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: szmmsz5246bt1g-etched.step / szmmsz5246bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); szmmsz5246bt1g.step / szmmsz5246bt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 72c34c6ab3cd791c, retrieved 2026-10-18, 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