component
1N5231BTR
Public Made by Adomby adom
onsemi Zener Diodes, DO-35. 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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1N5231BTR
onsemi · Zener Diodes · DO-35
1N5231BTR from onsemi, in a DO-35. 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 | onsemi |
| Package | DO-35 |
| 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 (nominal 5.1 V, min/max for 1N5231B) | VZ | 4.845 | 5.1 | 5.355 | V | TA = 25°C; @ IZ (Note 2): TL 30°C ±1°C, 3/8 in lead length | 2 |
| Temperature coefficient (printed ±0.030) | TC | -0.03 | 0.03 | %/°C | 2 | ||
| Forward voltage | VF | 1.2 | V | IF = 200 mA | 2 | ||
| Power dissipation | PD | 500 | mW | 1 | |||
| Derating above 50°C | 4 | mW/°C | 1 | ||||
| Storage temperature range | TSTG | -65 | 200 | °C | 1 | ||
| Operating junction temperature range | TJ | -65 | 200 | °C | 1 | ||
| Lead temperature | 230 | °C | 1/16 inch from case for 10 s | 1 | |||
| Dynamic impedance (printed single value, no min/max) | ZZ | 17 | Ω | @ IZ = 20 mA | 2 | ||
| Dynamic impedance at knee (printed single value, no min/max) | ZZK | 1600 | Ω | @ IZK = 0.25 mA | 2 | ||
| Reverse leakage current (printed single value, no min/max) | IR | 5 | µA | @ VR = 2.0 V | 2 |
CAD (KiCad official)
- Symbol:
1N5231BTR - Footprint:
Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal - 3D model: DO-35 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (6 pp, sha256
b3f8d18177d8624a, retrieved 2026-10-16, 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).
# 1N5231BTR
**onsemi** · Zener Diodes · DO-35
1N5231BTR from onsemi, in a DO-35. 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 | onsemi |
| Package | DO-35 |
| 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 (nominal 5.1 V, min/max for 1N5231B) | VZ | 4.845 | 5.1 | 5.355 | V | TA = 25°C; @ IZ (Note 2): TL 30°C ±1°C, 3/8 in lead length | 2 |
| Temperature coefficient (printed ±0.030) | TC | -0.03 | | 0.03 | %/°C | | 2 |
| Forward voltage | VF | | | 1.2 | V | IF = 200 mA | 2 |
| Power dissipation | PD | | | 500 | mW | | 1 |
| Derating above 50°C | | | 4 | | mW/°C | | 1 |
| Storage temperature range | TSTG | -65 | | 200 | °C | | 1 |
| Operating junction temperature range | TJ | -65 | | 200 | °C | | 1 |
| Lead temperature | | | | 230 | °C | 1/16 inch from case for 10 s | 1 |
| Dynamic impedance (printed single value, no min/max) | ZZ | | 17 | | Ω | @ IZ = 20 mA | 2 |
| Dynamic impedance at knee (printed single value, no min/max) | ZZK | | 1600 | | Ω | @ IZK = 0.25 mA | 2 |
| Reverse leakage current (printed single value, no min/max) | IR | | 5 | | µA | @ VR = 2.0 V | 2 |
## CAD (KiCad official)
- Symbol: `1N5231BTR`
- Footprint: `Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal`
- 3D model: DO-35 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589997028517310464) (6 pp, sha256 `b3f8d18177d8624a`, retrieved 2026-10-16, 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/1n5231btr-datasheet.pdf)