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SML4750A-E3
Public Made by Adomby adom
Vishay Intertech Zener Diodes, DO-214AC(SMA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SML4750A-E3
Vishay Intertech · Zener Diodes · DO-214AC(SMA)
SML4750A-E3 from Vishay Intertech, 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 terminal, identified by the cathode band on the DO-214AC (SMA) body; the SML4750 is a 27 V nominal Zener with 9.5 mA test current and a ±5 % tolerance for the A suffix. |
| 2 | A | passive | Anode terminal at the end opposite the cathode band; Ptot is 1000 mW at TL = 75 °C and Tj is 150 °C max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance (suffix A) | VZ | -5 | 5 | % | Suffix A | 1 | |
| Reverse current | IR | 5 | μA | at VR = 20.6 V | 2 | ||
| Dynamic resistance | ZZ | 35 | Ω | at IZT1 = 9.5 mA | 2 | ||
| Knee dynamic resistance | ZZK | 750 | Ω | at IZT2 = 0.25 mA | 2 | ||
| Surge current | IRM | 170 | mApk | Non-repetitive, 8.3 ms pulse width square wave or equivalent sine-wave superimposed on IZT | 2 | ||
| Power dissipation | Ptot | 1000 | mW | TL = 75 °C | 1 | ||
| Junction temperature | Tj | 150 | °C | 1 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 1 | ||
| Nominal zener voltage | VZ | 27 | V | at IZT1 = 9.5 mA | 2 | ||
| Zener test current | IZT1 | 9.5 | mA | Test current for VZ and ZZ | 2 |
CAD (KiCad official)
- Symbol:
SML4750A-E3 - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
sml4750a-e3-etched.step/sml4750a-e3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sml4750a-e3.step/sml4750a-e3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (5 pp, sha256
15b3fea9a6e65941, retrieved 2026-10-24, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# SML4750A-E3
**Vishay Intertech** · Zener Diodes · DO-214AC(SMA)
SML4750A-E3 from Vishay Intertech, 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 terminal, identified by the cathode band on the DO-214AC (SMA) body; the SML4750 is a 27 V nominal Zener with 9.5 mA test current and a ±5 % tolerance for the A suffix. |
| 2 | A | passive | Anode terminal at the end opposite the cathode band; Ptot is 1000 mW at TL = 75 °C and Tj is 150 °C max. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage tolerance (suffix A) | VZ | -5 | | 5 | % | Suffix A | 1 |
| Reverse current | IR | | | 5 | μA | at VR = 20.6 V | 2 |
| Dynamic resistance | ZZ | | | 35 | Ω | at IZT1 = 9.5 mA | 2 |
| Knee dynamic resistance | ZZK | | | 750 | Ω | at IZT2 = 0.25 mA | 2 |
| Surge current | IRM | | | 170 | mApk | Non-repetitive, 8.3 ms pulse width square wave or equivalent sine-wave superimposed on IZT | 2 |
| Power dissipation | Ptot | | | 1000 | mW | TL = 75 °C | 1 |
| Junction temperature | Tj | | | 150 | °C | | 1 |
| Storage temperature range | Tstg | -65 | | 150 | °C | | 1 |
| Nominal zener voltage | VZ | | 27 | | V | at IZT1 = 9.5 mA | 2 |
| Zener test current | IZT1 | | 9.5 | | mA | Test current for VZ and ZZ | 2 |
## CAD (KiCad official)
- Symbol: `SML4750A-E3`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `sml4750a-e3-etched.step` / `sml4750a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sml4750a-e3.step` / `sml4750a-e3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Vishay Intertech datasheet](docs/sml4750a-e3-datasheet.pdf) (5 pp, sha256 `15b3fea9a6e65941`, retrieved 2026-10-24, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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](docs/sml4750a-e3-datasheet.pdf)