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ZM4733A-GS08
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Vishay Intertech Zener Diodes, DO-213AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ZM4733A-GS08
Vishay Intertech · Zener Diodes · DO-213AB
ZM4733A-GS08 from Vishay Intertech, in a DO-213AB. 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 end marked by the cathode identification band; the Zener reference voltage (VZ nom. 5.1 V at IZT 49 mA for ZM4733A) appears with this end positive in reverse breakdown. |
| 2 | A | passive | Anode, the unmarked end of the MELF body; the gap between plug and glass can be on either the cathode or anode side. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-213AB |
| 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 | -5 | 5 | % | Standard Zener voltage tolerance | 1 | ||
| Zener voltage nominal | VZ | 5.1 | V | at IZT1 | 2 | ||
| Test current | IZT1 | 49 | mA | 2 | |||
| Reverse leakage current | IR | 10 | μA | at VR = 1 V | 2 | ||
| Reverse voltage for leakage test | VR | 1 | V | IR test | 2 | ||
| Dynamic resistance | ZZ | 7 | Ω | at IZT1, f = 1 kHz | 2 | ||
| Dynamic resistance (knee) | ZZK | 550 | Ω | at IZT2, f = 1 kHz | 2 | ||
| Test current 2 | IZT2 | 1 | mA | 2 | |||
| Surge current | IZSM | 890 | mA | Width of test pulse is 8.3 ms | 2 | ||
| Regulator current | IZM | 178 | mA | Valid provided that electrodes are kept at ambient temperature | 2 | ||
| Power dissipation | Ptot | 1000 | mW | Valid provided that electrodes are kept at ambient temperature | 1 | ||
| Thermal resistance junction to ambient air | RthJA | 170 | K/W | Valid provided that electrodes are kept at ambient temperature | 1 | ||
| Junction temperature | Tj | 175 | °C | 1 | |||
| Storage temperature range | Tstg | -65 | 175 | °C | 1 |
CAD (KiCad official)
- Symbol:
ZM4733A-GS08 - Footprint:
Diode_SMD:D_MELF - 3D model: DO-213AB (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (4 pp, sha256
e14e50a687383832, retrieved 2026-10-22, 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).
# ZM4733A-GS08
**Vishay Intertech** · Zener Diodes · DO-213AB
ZM4733A-GS08 from Vishay Intertech, in a DO-213AB. 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 end marked by the cathode identification band; the Zener reference voltage (VZ nom. 5.1 V at IZT 49 mA for ZM4733A) appears with this end positive in reverse breakdown. |
| 2 | A | passive | Anode, the unmarked end of the MELF body; the gap between plug and glass can be on either the cathode or anode side. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | DO-213AB |
| 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 | | -5 | | 5 | % | Standard Zener voltage tolerance | 1 |
| Zener voltage nominal | VZ | | 5.1 | | V | at IZT1 | 2 |
| Test current | IZT1 | | 49 | | mA | | 2 |
| Reverse leakage current | IR | | | 10 | μA | at VR = 1 V | 2 |
| Reverse voltage for leakage test | VR | | 1 | | V | IR test | 2 |
| Dynamic resistance | ZZ | | | 7 | Ω | at IZT1, f = 1 kHz | 2 |
| Dynamic resistance (knee) | ZZK | | | 550 | Ω | at IZT2, f = 1 kHz | 2 |
| Test current 2 | IZT2 | | 1 | | mA | | 2 |
| Surge current | IZSM | | | 890 | mA | Width of test pulse is 8.3 ms | 2 |
| Regulator current | IZM | | | 178 | mA | Valid provided that electrodes are kept at ambient temperature | 2 |
| Power dissipation | Ptot | | | 1000 | mW | Valid provided that electrodes are kept at ambient temperature | 1 |
| Thermal resistance junction to ambient air | RthJA | | | 170 | K/W | Valid provided that electrodes are kept at ambient temperature | 1 |
| Junction temperature | Tj | | | 175 | °C | | 1 |
| Storage temperature range | Tstg | -65 | | 175 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `ZM4733A-GS08`
- Footprint: `Diode_SMD:D_MELF`
- 3D model: DO-213AB (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Vishay Intertech datasheet](docs/zm4733a-gs08-datasheet.pdf) (4 pp, sha256 `e14e50a687383832`, retrieved 2026-10-22, 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/zm4733a-gs08-datasheet.pdf)