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BZX79-C2V4
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Nexperia Zener Diodes, DO-204AH(DO-35). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZX79-C2V4
Nexperia · Zener Diodes · DO-204AH(DO-35)
BZX79-C2V4 from Nexperia, in a DO-204AH(DO-35). 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, identified by the marking band on the glass body of the axial-leaded SOD27 package. |
| 2 | A | passive | Anode lead of the axial-leaded SOD27 package; the regulator is reverse-biased (cathode positive) for Zener operation, e.g. VZ 2.2 to 2.6 V at 5 mA for the C2V4. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DO-204AH(DO-35) |
| 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 (Tol. approx. ±5%, C) | VZ | 2.2 | 2.6 | V | IZtest = 5 mA, Tj = 25 °C | 5 | |
| Differential resistance | rdif | 275 | 600 | Ω | IZtest = 1 mA | 5 | |
| Differential resistance | rdif | 70 | 100 | Ω | IZtest = 5 mA | 5 | |
| Temperature coefficient | SZ | -3.5 | -1.6 | mV/K | IZtest = 5 mA | 5 | |
| Diode capacitance | Cd | 450 | pF | f = 1 MHz; VR = 0 V | 5 | ||
| Non-repetitive peak reverse current | IZSM | 6 | A | tp = 100 μs; Tamb = 25 °C | 5 | ||
| Reverse current | IR | 50 | μA | VR = 1 V | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA | 3 | ||
| Continuous forward current | IF | 250 | mA | 3 | |||
| Total power dissipation | Ptot | 400 | mW | Tamb = 50 °C; note 1 | 3 | ||
| Total power dissipation | Ptot | 500 | mW | Tamb = 50 °C; note 2 | 3 | ||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 3 | ||
| Storage temperature | Tstg | -65 | 200 | °C | 3 | ||
| Junction temperature | Tj | -65 | 200 | °C | 3 | ||
| Thermal resistance junction to tie-point | Rth j-tp | 300 | K/W | lead length 8 mm | 7 | ||
| Thermal resistance junction to ambient | Rth j-a | 380 | K/W | lead length max.; note 1 | 7 |
CAD (KiCad official)
- Symbol:
BZX79-C2V4 - Footprint:
Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal - 3D model: DO-204AH(DO-35) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
5d6ced72e738abc2, 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).
# BZX79-C2V4
**Nexperia** · Zener Diodes · DO-204AH(DO-35)
BZX79-C2V4 from Nexperia, in a DO-204AH(DO-35). 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, identified by the marking band on the glass body of the axial-leaded SOD27 package. |
| 2 | A | passive | Anode lead of the axial-leaded SOD27 package; the regulator is reverse-biased (cathode positive) for Zener operation, e.g. VZ 2.2 to 2.6 V at 5 mA for the C2V4. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DO-204AH(DO-35) |
| 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 (Tol. approx. ±5%, C) | VZ | 2.2 | | 2.6 | V | IZtest = 5 mA, Tj = 25 °C | 5 |
| Differential resistance | rdif | | 275 | 600 | Ω | IZtest = 1 mA | 5 |
| Differential resistance | rdif | | 70 | 100 | Ω | IZtest = 5 mA | 5 |
| Temperature coefficient | SZ | -3.5 | | -1.6 | mV/K | IZtest = 5 mA | 5 |
| Diode capacitance | Cd | | | 450 | pF | f = 1 MHz; VR = 0 V | 5 |
| Non-repetitive peak reverse current | IZSM | | | 6 | A | tp = 100 μs; Tamb = 25 °C | 5 |
| Reverse current | IR | | | 50 | μA | VR = 1 V | 4 |
| Forward voltage | VF | | | 0.9 | V | IF = 10 mA | 3 |
| Continuous forward current | IF | | | 250 | mA | | 3 |
| Total power dissipation | Ptot | | | 400 | mW | Tamb = 50 °C; note 1 | 3 |
| Total power dissipation | Ptot | | | 500 | mW | Tamb = 50 °C; note 2 | 3 |
| Non-repetitive peak reverse power dissipation | PZSM | | | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 3 |
| Storage temperature | Tstg | -65 | | 200 | °C | | 3 |
| Junction temperature | Tj | -65 | | 200 | °C | | 3 |
| Thermal resistance junction to tie-point | Rth j-tp | | | 300 | K/W | lead length 8 mm | 7 |
| Thermal resistance junction to ambient | Rth j-a | | | 380 | K/W | lead length max.; note 1 | 7 |
## CAD (KiCad official)
- Symbol: `BZX79-C2V4`
- Footprint: `Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal`
- 3D model: DO-204AH(DO-35) (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/BZX79-C2V4.pdf) (11 pp, sha256 `5d6ced72e738abc2`, 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/bzx79-c2v4-datasheet.pdf)