component
BZX585-C39
Public Made by Adomby adom
Nexperia Zener Diodes, SOD-523(SC-79). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBZX585-C39
Nexperia · Zener Diodes · SOD-523(SC-79)
BZX585-C39 from Nexperia, in a SOD-523(SC-79). 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; the datasheet specifies thermal limits referenced to the cathode tab (Ptot measured on FR4 with approximately 35 mm2 Cu area at the cathode tab). |
| 2 | A | passive | Anode, the non-marked terminal of the two-lead SOD523 (SC-79) package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-523(SC-79) |
| 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 |
|---|---|---|---|---|---|---|---|
| Tolerance | -5 | 5 | % | Sel C series (±5 %) | 1 | ||
| Working voltage | VZ | 37.05 | 40.95 | V | Sel C; Tj = 25 °C | 6 | |
| Diode capacitance | Cd | 45 | pF | f = 1 MHz; VR = 0 V | 6 | ||
| Non-repetitive peak reverse current | IZSM | 0.7 | A | tp = 100 µs; square wave; tj = 25 °C before surge | 6 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 µs; δ ≤ 0.02 | 4 | ||
| Forward voltage | VF | 1.1 | V | IF = 100 mA; pulse test tp ≤ 300 µs; δ ≤ 0.02 | 4 | ||
| 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; device mounted on FR4 PCB, approx. 35 mm² Cu area at cathode tab | 3 | ||
| Junction temperature | Tj | -65 | 150 | °C | 3 | ||
| Ambient temperature | Tamb | -65 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 350 | K/W | in free air; device mounted on FR4 PCB, approx. 35 mm² Cu area at cathode tab | 3 | ||
| Thermal resistance from junction to solder point | Rth(j-sp) | 65 | K/W | soldering point of cathode tab | 3 |
CAD (KiCad official)
- Symbol:
BZX585-C39 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523(SC-79) (KiCad packages3D, STEP)
- 3D model files:
bzx585-c39-etched.step/bzx585-c39-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx585-c39.step/bzx585-c39.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
ce6f045443a822c0, retrieved 2026-10-28, 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).