component
1N4743A
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.
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1N4743A
LGE · Zener Diodes · DO-41
1N4743A 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 tolerance (standard VZ tolerance, A suffix) | VZ | -5 | 5 | % | Standard VZ tolerance is 5% | 1 | |
| Power Dissipation | Pd | 1 | W | Maximum Ratings @ TA = 25°C; valid provided leads kept at TL @ 50°C, lead length 9.5 mm (Note 1) | 1 | ||
| Maximum Zener Impedance (ZZT) | ZZT | 10 | Ω | @ IZT 19 mA | 2 | ||
| Maximum Zener Impedance (ZZK) | ZZK | 700 | Ω | @ IZK 0.25 mA | 2 | ||
| Maximum Reverse Leakage Current | IR | 5 | µA | @ VR 9.9 V | 2 | ||
| Max Surge Current (8.3 ms) | IZS | 344 | mA | 8.3 ms surge | 2 | ||
| Temperature Coefficient | 0.05 | 0.085 | %/°C | 2 | |||
| Operating and Storage Temperature Range | Tj,TSTG | -65 | 200 | °C | 1 | ||
| Nominal Zener Voltage | VZ | 13 | V | @ IZT 19 mA | 2 | ||
| Forward Voltage | VF | 1.2 | V | @ IF = 200 mA | 1 | ||
| Derate Above 50°C (Note 1) | Pd | 6.67 | mW/°C | Above 50°C (Note 1) | 1 | ||
| Thermal Resistance - Junction to Ambient Air | RJA | 175 | °C/W | Junction to ambient air | 1 |
CAD (KiCad official)
- Symbol:
1N4743A - 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 (3 pp, sha256
9f198b7eaff0e915, 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).
# 1N4743A
**LGE** · Zener Diodes · DO-41
1N4743A 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 tolerance (standard VZ tolerance, A suffix) | VZ | -5 | | 5 | % | Standard VZ tolerance is 5% | 1 |
| Power Dissipation | Pd | | | 1 | W | Maximum Ratings @ TA = 25°C; valid provided leads kept at TL @ 50°C, lead length 9.5 mm (Note 1) | 1 |
| Maximum Zener Impedance (ZZT) | ZZT | | | 10 | Ω | @ IZT 19 mA | 2 |
| Maximum Zener Impedance (ZZK) | ZZK | | | 700 | Ω | @ IZK 0.25 mA | 2 |
| Maximum Reverse Leakage Current | IR | | | 5 | µA | @ VR 9.9 V | 2 |
| Max Surge Current (8.3 ms) | IZS | | | 344 | mA | 8.3 ms surge | 2 |
| Temperature Coefficient | | 0.05 | | 0.085 | %/°C | | 2 |
| Operating and Storage Temperature Range | Tj,TSTG | -65 | | 200 | °C | | 1 |
| Nominal Zener Voltage | VZ | | 13 | | V | @ IZT 19 mA | 2 |
| Forward Voltage | VF | | 1.2 | | V | @ IF = 200 mA | 1 |
| Derate Above 50°C (Note 1) | Pd | | 6.67 | | mW/°C | Above 50°C (Note 1) | 1 |
| Thermal Resistance - Junction to Ambient Air | RJA | | 175 | | °C/W | Junction to ambient air | 1 |
## CAD (KiCad official)
- Symbol: `1N4743A`
- 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](docs/1n4743a-datasheet.pdf) (3 pp, sha256 `9f198b7eaff0e915`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/1n4743a-datasheet.pdf)