component
BZX79-C56
Public Made by Adomby adom
Nexperia Zener Diodes, DO-204AH(DO-35). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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BZX79-C56
Nexperia · Zener Diodes · DO-204AH(DO-35)
BZX79-C56 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, indicated by the marking band on the package, which the datasheet states marks the cathode. |
| 2 | A | passive | Anode of the voltage regulator diode; the datasheet gives no separate anode rating, and the series limits apply, including continuous forward current of 250 mA max and total power dissipation of 500 mW max at Tamb = 50 °C with note 2 conditions. |
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 |
|---|---|---|---|---|---|---|---|
| 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; see Fig.3 | 3 | ||
| Storage temperature | Tstg | -65 | 200 | °C | 3 | ||
| Junction temperature | Tj | -65 | 200 | °C | 3 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; see Fig.4 | 3 | ||
| Reverse current | IR | 50 | nA | BZX79-B/C15 to BZX79-B/C75; VR = 0.7VZnom | 4 | ||
| Working voltage (Tol. approx. ±5%, C) | VZ | 52 | 60 | V | IZtest = 2 mA; Tol. approx. ±5% (C) | 6 | |
| Differential resistance | rdif | 100 | 425 | Ω | IZtest = 0.5 mA | 6 | |
| Differential resistance | rdif | 70 | 200 | Ω | IZtest = 2 mA | 6 | |
| Temperature coefficient | SZ | 42.2 | 52 | 63.8 | mV/K | IZtest = 2 mA | 6 |
| Diode capacitance | Cd | 40 | pF | f = 1 MHz; VR = 0 V | 6 | ||
| Non-repetitive peak reverse current | IZSM | 0.3 | A | tp = 100 μs; Tamb = 25 °C | 6 | ||
| 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.; see Fig.2 and note 1 | 7 |
CAD (KiCad official)
- Symbol:
BZX79-C56 - 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 2026-10-21, 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).