component

SZMMBZ47VALT1G

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onsemi Zener Diodes, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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Datasheet

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Contents

README

markdown

SZMMBZ47VALT1G

onsemi · Zener Diodes · SOT-23

SZMMBZ47VALT1G from onsemi, in a SOT-23. 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 K1 passive Cathode 1 - cathode of the first Zener diode. VRWM = 38 V, VBR = 44.65-49.35 V (nom 47 V) @ IT = 1.0 mA. Clamps to VC = 54 V @ IPP = 0.74 A per Figure 6 waveform.
2 K2 passive Cathode 2 - cathode of the second Zener diode. Identical Zener characteristics to K1 (VRWM = 38 V, VBR nom 47 V, VC = 54 V @ IPP = 0.74 A). Together with K1 forms two independent unidirectional protection paths sharing the common anode on pin 3.
3 A passive Common anode - shared anode terminal for both Zener diodes. Typically tied to GND for two-line unidirectional ESD/transient protection, or left floating between the two cathodes for bidirectional operation. Forward voltage VF ≤ 0.9 V @ IF = 10 mA.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23
Category Diodes
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • SZMMBZ47VALT1G
  • SZMMBZ47VALT3G
  • SZMMBZ47VTALT1G

CAD (KiCad official)

  • Symbol: SZMMBZ47VALT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: szmmbz47valt1g-etched.step / szmmbz47valt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); szmmbz47valt1g.step / szmmbz47valt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 39d50a354dd49ed5, 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