component
BZT52C4V3Q
Public Made by Adomby adom
JSMSEMI Zener Diodes, SOD-123. 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
markdownBZT52C4V3Q
JSMSEMI · Zener Diodes · SOD-123
BZT52C4V3Q from JSMSEMI, in a SOD-123. 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, the end marked with the band on the SOD-123 body; the zener is reverse-biased here, with VZ 4.09 V min, 4.30 V typ and 4.52 V max at IZT = 5 mA for BZT52C4V3Q. |
| 2 | A | passive | Anode, the unbanded end of the SOD-123 body; forward voltage is 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOD-123 |
| 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 | 4.09 | 4.3 | 4.52 | V | @ IZT = 5 mA | 2 |
| Maximum zener impedance | ZZT | 90 | Ω | @ IZT = 5 mA | 2 | ||
| Maximum zener impedance | ZZK | 600 | Ω | @ IZK = 1.0 mA | 2 | ||
| Temperature coefficient | TC | -3.5 | 0 | mV/C | @ IZT = 5 mA | 2 | |
| Maximum reverse current | IR | 3 | A | @ VR = 1.0 V | 2 | ||
| Forward voltage | VF | 0.9 | V | @ IF=10mA | 1 | ||
| Power dissipation (collector) | PC | 500 | mW | 1 | |||
| Thermal resistance, junction-to-ambient | RθJA | 250 | C/W | 1 | |||
| Thermal resistance, junction-to-case | RθJC | 140 | C/W | 1 | |||
| Junction temperature range | TJ | -55 | 150 | C | 1 | ||
| Storage temperature range | TSTG | -65 | 150 | C | 1 |
CAD (KiCad official)
- Symbol:
BZT52C4V3Q - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52c4v3q-etched.step/bzt52c4v3q-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c4v3q.step/bzt52c4v3q.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (3 pp, sha256
0e50fba7ba3ed338, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).