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1N4739A
Public Made by Adomby adom
LGE Zener Diodes, DO-41. 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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown1N4739A
LGE · Zener Diodes · DO-41
1N4739A from LGE, in a DO-41. 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 | LGE |
| Package | DO-41 |
| 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) | Vz | 8.92 | 9.1 | 9.28 | V | Iz=28.0 mA (Vz test current) | 2 |
| Zener voltage tolerance (A suffix) | -5 | 5 | % | On nominal Vz value | 3 | ||
| Reverse current | IR | 10 | uA | VR=7.0 V | 2 | ||
| Dynamic resistance | rd | 5 | Ω | Iz=28.0 mA | 2 | ||
| Forward voltage | VF | 1.2 | V | IF=200 mA | 3 | ||
| Peak power dissipation | PD | 1 | Watts | TA=50°C (Note 1: mounted on 5.0 mm² land areas) | 1 | ||
| Power derating above 50°C | PD | 6.67 | mW/°C | Derate above TA=50°C | 1 | ||
| Peak forward surge current | IFSM | 10 | Amps | 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) | 1 | ||
| Operating and storage temperature range | TJ, TSTG | -55 | 200 | °C | 1 |
CAD (KiCad official)
- Symbol:
1N4739A - Footprint:
Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal - 3D model: DO-41 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (4 pp, sha256
c90b657b670da4f4, retrieved 2026-10-21, 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).