component
1.5KE51CA
Public Made by Adomby adom
DOWO ESD And Surge Protection (TVS/ESD), DO-201. 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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1.5KE51CA
DOWO · ESD And Surge Protection (TVS/ESD) · DO-201
1.5KE51CA from DOWO, in a DO-201. 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 | DOWO |
| Package | DO-201 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 48.45 | 53.55 | V | @IT, IT = 1 mA | 3 | |
| Maximum Reverse Leakage Current | IR | 1 | uA | @VRWM = 43.6 V | 3 | ||
| Working Peak Reverse Voltage | VRWM | 43.6 | V | 3 | |||
| Maximum Reverse Surge Current | IPP | 21.4 | A | 3 | |||
| Maximum Clamping Voltage | VC | 70.1 | V | @IPP | 3 | ||
| Peak Pulse Power Dissipation | PPP | 1500 | W | 10/1000 µs waveform (non-repetitive; derated above TA = 25 °C per Fig.1) | 1 | ||
| Power Dissipation on Infinite Heatsink | PD | 6.5 | W | On infinite heatsink at TL = 75 °C | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
1.5KE51CA - Footprint:
Diode_THT:D_DO-201AD_P15.24mm_Horizontal - 3D model: DO-201 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DOWO datasheet (4 pp, sha256
332c6c4e0f3105ca, retrieved 2026-10-14, 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).
# 1.5KE51CA
**DOWO** · ESD And Surge Protection (TVS/ESD) · DO-201
1.5KE51CA from DOWO, in a DO-201. 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 | DOWO |
| Package | DO-201 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 48.45 | | 53.55 | V | @IT, IT = 1 mA | 3 |
| Maximum Reverse Leakage Current | IR | | | 1 | uA | @VRWM = 43.6 V | 3 |
| Working Peak Reverse Voltage | VRWM | | | 43.6 | V | | 3 |
| Maximum Reverse Surge Current | IPP | | | 21.4 | A | | 3 |
| Maximum Clamping Voltage | VC | | | 70.1 | V | @IPP | 3 |
| Peak Pulse Power Dissipation | PPP | | | 1500 | W | 10/1000 µs waveform (non-repetitive; derated above TA = 25 °C per Fig.1) | 1 |
| Power Dissipation on Infinite Heatsink | PD | | | 6.5 | W | On infinite heatsink at TL = 75 °C | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `1.5KE51CA`
- Footprint: `Diode_THT:D_DO-201AD_P15.24mm_Horizontal`
- 3D model: DO-201 (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [DOWO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588891901298946048) (4 pp, sha256 `332c6c4e0f3105ca`, retrieved 2026-10-14, 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/1-5ke51ca-datasheet.pdf)