component
BZT52C39Q
Public Made by Adomby adom
JSMSEMI Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBZT52C39Q
JSMSEMI · Zener Diodes · SOD-123
BZT52C39Q 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 banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
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 | 37.05 | 39 | 40.95 | V | @ IZT = 2 mA | 2 |
| Maximum Zener impedance | ZZT | 130 | Ω | @ IZT = 2 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 350 | Ω | @ IZK = 0.5 mA | 2 | ||
| Temperature coefficient | TC | 33.4 | 41.2 | mV/C | @ IZT = 2 mA | 2 | |
| Maximum reverse current | IR | 0.1 | A | @ VR = 27.3 V | 2 | ||
| Zener voltage tolerance (C-series) | -5 | 5 | % | C-series, per features list | 1 | ||
| Forward voltage | VF | 0.9 | V | @ IF = 10 mA | 1 | ||
| Power dissipation (collector) | PC | 500 | mW | TA = 25C | 1 | ||
| Junction temperature range | TJ | -55 | 150 | C | TA = 25C | 1 | |
| Storage temperature range | TSTG | -65 | 150 | C | TA = 25C | 1 | |
| Thermal resistance, junction-to-ambient | RθJA | 250 | C/W | TA = 25C | 1 | ||
| Thermal resistance, junction-to-case | RθJC | 140 | C/W | TA = 25C | 1 |
CAD (KiCad official)
- Symbol:
BZT52C39Q - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52c39q-etched.step/bzt52c39q-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c39q.step/bzt52c39q.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (3 pp, sha256
c16c7f42fec1d215, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).