component
1N4748
Public Made by Adomby adom
LGE Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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1N4748
LGE · Zener Diodes · DO-41
1N4748 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, marked by the cathode band; zener voltage 22 V nominal at IZT=11.5 mA for the 1N4748, with 1.0 W power dissipation. |
| 2 | A | passive | Anode terminal of the zener diode; forward voltage max 1.2 V at IF=200 mA. |
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 |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF | 1.2 | V | IF=200mA | 1 | ||
| Thermal resistance junction to ambient | RThJA | 100 | K/W | l=9.5mm (3/8"), TL=constant | 1 | ||
| Junction temperature | TJ | 200 | °C | 1 | |||
| Storage temperature range | Ts | -55 | 200 | °C | 1 | ||
| Power dissipation | PDiss | 1 | W | Tamb 50 | 1 | ||
| Zener voltage tolerance | VZ | -10 | 10 | % | standard tolerance, no suffix | 1 | |
| Maximum dynamic impedance | ZZT | 23 | Ω | @IZT | 2 | ||
| Maximum dynamic impedance (knee) | ZZK | 750 | Ω | @IZK | 2 | ||
| Nominal zener voltage | VZ | 22 | V | @IZT | 2 | ||
| Test current | IZT | 11.5 | mA | 2 |
CAD (KiCad official)
- Symbol:
1N4748 - 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
c4329f8ab451eba3, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-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).
# 1N4748
**LGE** · Zener Diodes · DO-41
1N4748 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, marked by the cathode band; zener voltage 22 V nominal at IZT=11.5 mA for the 1N4748, with 1.0 W power dissipation. |
| 2 | A | passive | Anode terminal of the zener diode; forward voltage max 1.2 V at IF=200 mA. |
## 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 |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF | | | 1.2 | V | IF=200mA | 1 |
| Thermal resistance junction to ambient | RThJA | | | 100 | K/W | l=9.5mm (3/8"), TL=constant | 1 |
| Junction temperature | TJ | | | 200 | °C | | 1 |
| Storage temperature range | Ts | -55 | | 200 | °C | | 1 |
| Power dissipation | PDiss | | | 1 | W | Tamb 50 | 1 |
| Zener voltage tolerance | VZ | -10 | | 10 | % | standard tolerance, no suffix | 1 |
| Maximum dynamic impedance | ZZT | | | 23 | Ω | @IZT | 2 |
| Maximum dynamic impedance (knee) | ZZK | | | 750 | Ω | @IZK | 2 |
| Nominal zener voltage | VZ | | 22 | | V | @IZT | 2 |
| Test current | IZT | | 11.5 | | mA | | 2 |
## CAD (KiCad official)
- Symbol: `1N4748`
- 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/1n4748-datasheet.pdf) (3 pp, sha256 `c4329f8ab451eba3`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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).
[Datasheet PDF](docs/1n4748-datasheet.pdf)