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1SMA5919B

Public Made by Adom

by adom

YFW Zener Diodes, SMA. 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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1SMA5919B

YFW · Zener Diodes · SMA

1SMA5919B from YFW, in a SMA. 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 silicon planar Zener diode, marked as pin 1 in the datasheet pinning figure for the DO-214AC/SMA package. The datasheet gives no pin-specific electrical limit; the device ratings are total power dissipation max. 1.5 W and junction temperature range -55 to +150 °C.
2 Anode passive Anode terminal of the silicon planar Zener diode, marked as pin 2 in the datasheet pinning figure for the DO-214AC/SMA package. The datasheet gives no pin-specific electrical limit; the device ratings are total power dissipation max. 1.5 W and junction temperature range -55 to +150 °C.

Key specifications

Parameter Value
Manufacturer YFW
Package SMA
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 (nominal 5.6 V, ±5% suffix B) VZT 5.32 5.6 5.88 V at IZT; VZT tested with 20 ms pulses 2
Zener voltage tolerance (suffix B) -5 5 % suffix B = ±5% 2
Dynamic impedance ZZT 2 Ω at IZT 2
Admissible zener current IZM 267 mA 2
Power dissipation PD 1.5 W at TL=75°C 1
Forward voltage VF 1.5 V at IF = 200 mA 1
Junction temperature range Tj -55 150 °C 1
Storage temperature range Ts -55 150 °C 1

CAD (KiCad official)

  • Symbol: 1SMA5919B
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA (KiCad packages3D, STEP)
  • 3D model files: 1sma5919b-etched.step / 1sma5919b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma5919b.step / 1sma5919b.glb are the bare package body.

Provenance

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

  • Datasheet: YFW datasheet (3 pp, sha256 ba37c5fbd1f125b2, retrieved 2026-10-21, 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