component
SMA5938B
Public Made by Adomby adom
DOWO Zener Diodes, DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownSMA5938B
DOWO · Zener Diodes · DO-214AC(SMA)
SMA5938B from DOWO, in a DO-214AC(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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | DO-214AC(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 |
|---|---|---|---|---|---|---|---|
| Maximum reverse leakage current | IR | 0.5 | μA | @ VR = 27.4 V | 3 | ||
| Maximum Zener impedance | ZZT | 38 | Ω | @ IZT = 10.4 mA | 3 | ||
| Maximum Zener impedance | ZZK | 850 | Ω | @ IZK = 0.25 mA | 3 | ||
| Maximum DC Zener current | IZM | 41 | mA | 3 | |||
| Maximum forward voltage | VF | 1.5 | V | IF = 200 mA | 1 | ||
| DC power dissipation | PD | 1.5 | W | TL = 75 °C | 1 | ||
| Junction temperature range | TJ | -55 | 175 | °C | 1 | ||
| Storage temperature range | TSTG | -55 | 175 | °C | 1 | ||
| Nominal Zener voltage tolerance (B suffix) | VZ | -5 | 5 | % | Standard tolerance on nominal Zener voltage (Note 1) | 3 | |
| Nominal Zener voltage | VZ | 36 | V | @ IZT = 10.4 mA | 3 |
CAD (KiCad official)
- Symbol:
SMA5938B - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
sma5938b-etched.step/sma5938b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma5938b.step/sma5938b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DOWO datasheet (3 pp, sha256
b4fa0d69f6b2b5dd, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).