component
SMA2Z27A
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
markdownSMA2Z27A
YFW · Zener Diodes · SMA
SMA2Z27A 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, identified by the polarity symbol marked on the molded body; the datasheet gives no separate electrical limits for this pin beyond the 2.0 W DC power dissipation at TL = 50 °C (Note 1) for the device. |
| 2 | Anode | passive | Anode terminal, the opposite polarity end of the two-terminal device; the datasheet gives no separate electrical limits for this pin. |
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 VZ (nominal, min, max) | VZ | 25.65 | 27 | 28.35 | V | @IZT, IZT = 18.5 mA | 2 |
| Maximum zener impedance ZZT | ZZT | 18 | Ω | @IZT = 18.5 mA | 2 | ||
| Maximum zener impedance ZZK | ZZK | 750 | Ω | @IZK = 0.25 mA | 2 | ||
| Maximum reverse leakage current | IR | 0.5 | uA | @VR = 20.6 V | 2 | ||
| Maximum DC zener current | IZM | 68 | mA | 2 | |||
| Maximum forward voltage | VF | 1.2 | V | at IF = 200 mA | 1 | ||
| DC power dissipation | PD | 2 | W | at TL = 50 °C (Note 1) | 1 | ||
| Junction temperature range | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | Ts | -55 | 150 | °C | 1 | ||
| Zener voltage tolerance | -5 | 5 | % | Standard zener voltage tolerance (features list) | 1 |
CAD (KiCad official)
- Symbol:
SMA2Z27A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA (KiCad packages3D, STEP)
- 3D model files:
sma2z27a-etched.step/sma2z27a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma2z27a.step/sma2z27a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (4 pp, sha256
fbbf992c8973accd, 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).