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PDZ3.9B
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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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PDZ3.9B
Nexperia · Zener Diodes · SOD-323
PDZ3.9B 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 of the Zener diode; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the Zener diode; the datasheet gives no additional electrical limits for this pin. |
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 (nominal) | VZ(nom) | 3.9 | V | Nominal working voltage of PDZ3.9B | 4 | ||
| Working voltage tolerance (series) | -2 | 2 | % | Approximately ±2 %, series tolerance as stated in Features | 1 | ||
| Working voltage | VZ | 3.89 | 4.16 | V | IZ = 5 mA | 4 | |
| Maximum differential resistance (IZ = 0.5 mA column) | rdif | 500 | Ω | Printed as '500 @ 1 mA' | 4 | ||
| Maximum differential resistance (IZ = 5 mA) | rdif | 90 | Ω | IZ = 5 mA | 4 | ||
| Reverse current | IR | 3 | µA | Max VR = 1.0 V | 4 | ||
| Temperature coefficient | SZ | -2.5 | mV/K | IZ = 5 mA | 4 | ||
| Diode capacitance | Cd | 370 | pF | f = 1 MHz; VR = 0 V | 4 | ||
| Non-repetitive peak reverse current | IZSM | 8 | A | tp = 100 µs; square wave; Tamb = 25 °C prior to surge | 4 | ||
| 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 | ||
| Continuous forward current | IF | 200 | mA | 3 | |||
| Total power dissipation | Ptot | 400 | mW | Tamb = 25 °C; device mounted on FR4 PCB, single-sided copper, standard footprint | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Thermal resistance junction to solder point | Rth(j-sp) | 130 | K/W | In free air | 3 | ||
| Thermal resistance junction to ambient | Rth(j-a) | 340 | K/W | Device mounted on FR4 PCB, single-sided copper, tin-plated and standard footprint | 3 |
CAD (KiCad official)
- Symbol:
PDZ3.9B - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
pdz3-9b-etched.step/pdz3-9b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pdz3-9b.step/pdz3-9b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
74ba76e17a2a288c, retrieved 2026-10-23, tier: lcsc) - 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).
# PDZ3.9B
**Nexperia** · Zener Diodes · SOD-323
PDZ3.9B 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 of the Zener diode; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the Zener diode; the datasheet gives no additional electrical limits for this pin. |
## 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 (nominal) | VZ(nom) | | 3.9 | | V | Nominal working voltage of PDZ3.9B | 4 |
| Working voltage tolerance (series) | | -2 | | 2 | % | Approximately ±2 %, series tolerance as stated in Features | 1 |
| Working voltage | VZ | 3.89 | | 4.16 | V | IZ = 5 mA | 4 |
| Maximum differential resistance (IZ = 0.5 mA column) | rdif | | | 500 | Ω | Printed as '500 @ 1 mA' | 4 |
| Maximum differential resistance (IZ = 5 mA) | rdif | | | 90 | Ω | IZ = 5 mA | 4 |
| Reverse current | IR | | | 3 | µA | Max VR = 1.0 V | 4 |
| Temperature coefficient | SZ | | -2.5 | | mV/K | IZ = 5 mA | 4 |
| Diode capacitance | Cd | | | 370 | pF | f = 1 MHz; VR = 0 V | 4 |
| Non-repetitive peak reverse current | IZSM | | | 8 | A | tp = 100 µs; square wave; Tamb = 25 °C prior to surge | 4 |
| 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 |
| Continuous forward current | IF | | | 200 | mA | | 3 |
| Total power dissipation | Ptot | | | 400 | mW | Tamb = 25 °C; device mounted on FR4 PCB, single-sided copper, standard footprint | 3 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 3 |
| Junction temperature | Tj | | | 150 | °C | | 3 |
| Thermal resistance junction to solder point | Rth(j-sp) | | | 130 | K/W | In free air | 3 |
| Thermal resistance junction to ambient | Rth(j-a) | | | 340 | K/W | Device mounted on FR4 PCB, single-sided copper, tin-plated and standard footprint | 3 |
## CAD (KiCad official)
- Symbol: `PDZ3.9B`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `pdz3-9b-etched.step` / `pdz3-9b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pdz3-9b.step` / `pdz3-9b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227906615283712) (11 pp, sha256 `74ba76e17a2a288c`, retrieved 2026-10-23, tier: lcsc)
- **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/pdz3-9b-datasheet.pdf)