component
1N5387B
Public Made by Adomby adom
LGE Zener Diodes, DO-15. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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1N5387B
LGE · Zener Diodes · DO-15
1N5387B from LGE, in a DO-15. 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 terminal, marked by the cathode band; connects to the positive side in zener (reverse) operation, with VZ of 190 V at IZT 5.0 mA for the 1N5387B. |
| 2 | A | passive | Anode terminal, opposite the cathode band; 5.0 W maximum DC power dissipation at TL=75°C with junction and storage range of -55 to +150°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | DO-15 |
| 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 (B suffix) | VZ | -5 | 5 | % | suffix B | 1 | |
| Zener voltage | VZ | 190 | V | @IZT | 3 | ||
| Zener test current | IZT | 5 | mA | 3 | |||
| Max zener impedance | ZZT | 450 | Ω | ZZT@IZT | 3 | ||
| Max zener impedance at knee | ZZK | 1850 | Ω | ZZT@IZK=1mA | 3 | ||
| Max reverse leakage current | IR | 0.5 | µA | at VR = 144 V | 3 | ||
| Reverse voltage | VR | 144 | V | for IR test | 3 | ||
| Surge current | Ir | 0.9 | A | 8.3ms square wave, non-recurrent | 3 | ||
| Voltage regulation | ΔVZ | 5 | V | VZ at 10% and 50% of IZM | 3 | ||
| Maximum regulator current | IZM | 25 | mA | TL=75, B-suffix | 3 | ||
| DC power dissipation | PD | 5 | W | TL=75, zero lead length | 1 | ||
| Power derating above 75 | PD | 40 | mW | derate above 75 (NOTE 1) | 1 | ||
| Junction temperature | TJ | -55 | 150 | °C | 1 | ||
| Storage temperature range | Ts | -55 | 150 | °C | 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 | copper | NOTES: (1) Mounted on 8.0mm2 copper pads to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
1N5387B - Footprint:
Diode_THT:D_DO-15_P12.70mm_Horizontal - 3D model: DO-15 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LGE datasheet (5 pp, sha256
b2a8599d7ca807f9, 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).
# 1N5387B
**LGE** · Zener Diodes · DO-15
1N5387B from LGE, in a DO-15. 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 terminal, marked by the cathode band; connects to the positive side in zener (reverse) operation, with VZ of 190 V at IZT 5.0 mA for the 1N5387B. |
| 2 | A | passive | Anode terminal, opposite the cathode band; 5.0 W maximum DC power dissipation at TL=75°C with junction and storage range of -55 to +150°C. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | DO-15 |
| 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 (B suffix) | VZ | -5 | | 5 | % | suffix B | 1 |
| Zener voltage | VZ | | 190 | | V | @IZT | 3 |
| Zener test current | IZT | | 5 | | mA | | 3 |
| Max zener impedance | ZZT | | | 450 | Ω | ZZT@IZT | 3 |
| Max zener impedance at knee | ZZK | | | 1850 | Ω | ZZT@IZK=1mA | 3 |
| Max reverse leakage current | IR | | | 0.5 | µA | at VR = 144 V | 3 |
| Reverse voltage | VR | | 144 | | V | for IR test | 3 |
| Surge current | Ir | | | 0.9 | A | 8.3ms square wave, non-recurrent | 3 |
| Voltage regulation | ΔVZ | | | 5 | V | VZ at 10% and 50% of IZM | 3 |
| Maximum regulator current | IZM | | | 25 | mA | TL=75, B-suffix | 3 |
| DC power dissipation | PD | | | 5 | W | TL=75, zero lead length | 1 |
| Power derating above 75 | PD | | | 40 | mW | derate above 75 (NOTE 1) | 1 |
| Junction temperature | TJ | -55 | | 150 | °C | | 1 |
| Storage temperature range | Ts | -55 | | 150 | °C | | 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 | copper | | NOTES: (1) Mounted on 8.0mm2 copper pads to each terminal. | 1 |
## CAD (KiCad official)
- Symbol: `1N5387B`
- Footprint: `Diode_THT:D_DO-15_P12.70mm_Horizontal`
- 3D model: DO-15 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [LGE datasheet](docs/1n5387b-datasheet.pdf) (5 pp, sha256 `b2a8599d7ca807f9`, 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/1n5387b-datasheet.pdf)