component
1SMA5919B
Public Made by Adomby adom
YFW Zener Diodes, SMA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown1SMA5919B
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1sma5919b.step/1sma5919b.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).