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SZMM3Z33VT1GX
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Nexperia Zener Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SZMM3Z33VT1GX
Nexperia · Zener Diodes · SOD-323
SZMM3Z33VT1GX from Nexperia, in a SOD-323. 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, indicated by the marking bar on the package; the datasheet notes the marking bar marks the cathode. |
| 2 | A | passive | Anode of the Zener voltage regulator diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| working voltage | VZ | 31 | 33 | 35 | V | IZ = 2 mA | 5 |
| differential resistance | rdiff | 0.05 | Ω | IZ = 2 mA | 5 | ||
| temperature coefficient | SZ | 27.4 | 33.4 | mV/K | IZ = 2 mA | 5 | |
| reverse current | IR | 325 | µA | IZ = 0.5 mA; VR = 23.1 V | 5 | ||
| reverse current | IR | 80 | µA | IZ = 2 mA; VR = 23.1 V | 5 | ||
| diode capacitance | Cd | 45 | pF | f = 1 MHz; VR = 0 V | 5 | ||
| tolerance | -5 | 5 | % | Approximately ± 5 % tolerance series | 1 | ||
| forward voltage | VF | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 3 | ||
| forward voltage | VF | 1.1 | V | IF = 100 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 3 | ||
| forward current | IF | 200 | mA | 3 | |||
| non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 µs; square wave; Tamb = 25 °C; prior to surge | 3 | ||
| total power dissipation | Ptot | 300 | mW | Tamb = 25 °C | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 415 | K/W | in free air | 3 | ||
| thermal resistance from junction to solder point | Rth(j-sp) | 110 | K/W | 3 |
CAD (KiCad official)
- Symbol:
SZMM3Z33VT1GX - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
szmm3z33vt1gx-etched.step/szmm3z33vt1gx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);szmm3z33vt1gx.step/szmm3z33vt1gx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (12 pp, sha256
97ec17023363288c, retrieved 2026-10-27, tier: manufacturer) - 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).
# SZMM3Z33VT1GX
**Nexperia** · Zener Diodes · SOD-323
SZMM3Z33VT1GX from Nexperia, in a SOD-323. 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, indicated by the marking bar on the package; the datasheet notes the marking bar marks the cathode. |
| 2 | A | passive | Anode of the Zener voltage regulator diode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| working voltage | VZ | 31 | 33 | 35 | V | IZ = 2 mA | 5 |
| differential resistance | rdiff | | | 0.05 | Ω | IZ = 2 mA | 5 |
| temperature coefficient | SZ | 27.4 | | 33.4 | mV/K | IZ = 2 mA | 5 |
| reverse current | IR | | | 325 | µA | IZ = 0.5 mA; VR = 23.1 V | 5 |
| reverse current | IR | | | 80 | µA | IZ = 2 mA; VR = 23.1 V | 5 |
| diode capacitance | Cd | | | 45 | pF | f = 1 MHz; VR = 0 V | 5 |
| tolerance | | -5 | | 5 | % | Approximately ± 5 % tolerance series | 1 |
| forward voltage | VF | | | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 3 |
| forward voltage | VF | | | 1.1 | V | IF = 100 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 3 |
| forward current | IF | | | 200 | mA | | 3 |
| non-repetitive peak reverse power dissipation | PZSM | | | 40 | W | tp = 100 µs; square wave; Tamb = 25 °C; prior to surge | 3 |
| total power dissipation | Ptot | | | 300 | mW | Tamb = 25 °C | 3 |
| junction temperature | Tj | | | 150 | °C | | 3 |
| ambient temperature | Tamb | -55 | | 150 | °C | | 3 |
| storage temperature | Tstg | -65 | | 150 | °C | | 3 |
| thermal resistance from junction to ambient | Rth(j-a) | | | 415 | K/W | in free air | 3 |
| thermal resistance from junction to solder point | Rth(j-sp) | | | 110 | K/W | | 3 |
## CAD (KiCad official)
- Symbol: `SZMM3Z33VT1GX`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `szmm3z33vt1gx-etched.step` / `szmm3z33vt1gx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `szmm3z33vt1gx.step` / `szmm3z33vt1gx.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/SZMM3Z33VT1GX.pdf) (12 pp, sha256 `97ec17023363288c`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/szmm3z33vt1gx-datasheet.pdf)