component
CZRA4736-HF
Public Made by Adomby adom
Comchip Zener Diodes, DO-214AC(SMA). 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
markdownCZRA4736-HF
Comchip · Zener Diodes · DO-214AC(SMA)
CZRA4736-HF from Comchip, in a DO-214AC(SMA). 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 | Cathode | passive | Cathode, indicated by the cathode band on the package; nominal zener voltage of 6.8 V at IZT = 37 mA for CZRA4736-HF. |
| 2 | Anode | passive | Anode terminal of the zener diode, with a maximum power dissipation of 1000 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | DO-214AC(SMA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage | VZ | 6.8 | V | @IZT | 2 | ||
| Zener voltage tolerance | -5 | 5 | % | Standard zener voltage tolerance | 1 | ||
| Test current | IZT | 37 | mA | 2 | |||
| Zener impedance | ZZT | 3.5 | Ω | @IZT | 2 | ||
| Zener impedance knee | ZZK | 700 | Ω | @IZK = 1.0 mA | 2 | ||
| Reverse leakage current | IR | 10 | uA | VR = 4.0 V | 2 | ||
| Surge current | Isurge | 660 | mA | 2 | |||
| Forward voltage | VF | 1.2 | V | IF = 200 mA | 1 | ||
| Power dissipation | PD | 1000 | mW | @TL = 75°C | 1 | ||
| Thermal resistance junction to case | RθJC | 30 | °C/W | Mounted on 0.2"x0.2" (5x5mm) FR-4 PCB | 1 | ||
| Thermal resistance junction to ambient | RθJA | 150 | °C/W | Mounted on 0.2"x0.2" (5x5mm) FR-4 PCB | 1 | ||
| Operating temperature | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature | TSTG | -65 | 175 | °C | 1 |
CAD (KiCad official)
- Symbol:
CZRA4736-HF - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
czra4736-hf-etched.step/czra4736-hf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);czra4736-hf.step/czra4736-hf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Comchip datasheet (6 pp, sha256
bc2c56bbb07eb93c, retrieved 2026-10-22, tier: lcsc) - 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).