SMA4739A
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech Zener Diodes, SMA(DO-214AC). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
| Name | Last updated |
|---|---|
| docs | 6d ago |
| viewers | 6d ago |
| package.json | 6d ago |
| page.json | 6d ago |
| README.md | 6d ago |
| sma4739a-etched.glb | 6d ago |
| sma4739a-etched.step | 6d ago |
| sma4739a-hero.glb | 6d ago |
| sma4739a-hero.overlay.json | 6d ago |
| sma4739a.glb | 6d ago |
| sma4739a.kicad_mod | 6d ago |
| sma4739a.kicad_sym | 6d ago |
| sma4739a.lbr | 6d ago |
| sma4739a.step | 6d ago |
SMA4739A
Yangzhou Yangjie Elec Tech · Zener Diodes · SMA(DO-214AC)
SMA4739A from Yangzhou Yangjie Elec Tech, in a SMA(DO-214AC). 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 | Yangzhou Yangjie Elec Tech |
| Package | SMA(DO-214AC) |
| 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 (Min / Typ / Max) | VZ | 8.65 | 9.1 | 9.56 | V | at IZT 28.0 mA | 2 |
| Maximum dynamic impedance | ZZT | 5 | Ω | at IZT 28.0 mA | 2 | ||
| Maximum dynamic impedance | ZZK | 700 | Ω | at IZK 0.50 mA | 2 | ||
| Maximum reverse leakage current | IR | 10 | μA | at VR 7.0 V | 2 | ||
| Maximum surge current | IRM | 500 | mA | non-repetitive 8.3 ms pulse superimposed on IZT per JEDEC method | 2 | ||
| Maximum DC Zener current | IZM | 100 | mA | 2 | |||
| DC power dissipation | PD | 1 | W | at TL = 75 °C | 1 | ||
| Maximum instantaneous forward voltage | VF | 1.2 | V | @ IF = 200 mA | 1 | ||
| Maximum junction temperature | Tj | -55 | 150 | ℃ | 1 | ||
| Storage temperature range | Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal resistance, junction to lead | RθJ-L | 30 | ℃/W | junction to lead, PCB with 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pad areas | 1 | ||
| Thermal resistance, junction to ambient | RθJ-A | 170 | ℃/W | junction to ambient, PCB with 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pad areas | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |
CAD (KiCad official)
- Symbol:
SMA4739A - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
sma4739a-etched.step/sma4739a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sma4739a.step/sma4739a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (6 pp, sha256
0887575cbf398ef1, retrieved 2026-10-22, 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).