component
1N4751APF-M
Public Made by Adomby adom
ST(Semtech) Zener Diodes, DO-41. 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
markdown1N4751APF-M
ST(Semtech) · Zener Diodes · DO-41
1N4751APF-M from ST(Semtech), in a DO-41. 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 | ST(Semtech) |
| Package | DO-41 |
| 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 | 28.5 | 31.5 | V | IZT 8.5 mA; Ta = 25 °C; DC test (note 3) | 2 | |
| Reverse leakage current | IR | 5 | µA | VR = 22.8 V; Ta = 25 °C | 2 | ||
| Maximum Zener impedance | rZJT | 40 | Ω | IZT 8.5 mA; 60 Hz AC at 10% of IZT (note 1) | 2 | ||
| Maximum Zener impedance at knee | rZJK | 1000 | Ω | IZK 0.25 mA (note 1) | 2 | ||
| Maximum surge current | IZSM | 150 | mA | Maximum peak non-repetitive reverse surge, 1/120 s, superimposed on IZT (note 4) | 2 | ||
| Maximum regulator current | IZM | 30 | mA | 2 | |||
| Power dissipation | Ptot | 1 | W | Leads kept at ambient at 8 mm from case (note 1) | 1 | ||
| Junction temperature | Tj | 200 | °C | 1 | |||
| Storage temperature range | TS | -65 | 200 | °C | 1 | ||
| Thermal resistance junction to ambient air | RthA | 170 | K/W | Leads kept at ambient at 8 mm from case (note 1) | 1 | ||
| Forward voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| Nominal Zener voltage | VZnom | 30 | V | 2 |
CAD (KiCad official)
- Symbol:
1N4751APF-M - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST(Semtech) datasheet (4 pp, sha256
b4504508e5b23338, retrieved 2026-10-17, 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).