component
1.5KE400CA
Public Made by Adomby adom
Littelfuse TVS, DO-201. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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1.5KE400CA
Littelfuse · TVS · DO-201
1.5KE400CA from Littelfuse, 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 | A1 | passive | Bidirectional terminal 1 of the 1.5KE400CA axial lead, with no polarity and no cathode band, standing off up to VR 342 V, breaking down at 380-420 V at 1 mA, and clamping at a maximum of 548 V at 2.8 A peak pulse current. |
| 2 | A2 | passive | Bidirectional terminal 2 of the 1.5KE400CA axial lead, with no polarity and no cathode band, standing off up to VR 342 V, breaking down at 380-420 V at 1 mA, and clamping at a maximum of 548 V at 2.8 A peak pulse current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 | 380 | 420 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 342 | V | 2 | |||
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Clamping Voltage | VC | 548 | V | @ Ipp = 2.8 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 2.8 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000μs waveform (Fig.2) | 1 | ||
| Steady State Power Dissipation | PD | 6.5 | W | Infinite heat sink at TL=75ºC | 1 | ||
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | 1 | |||
| Breakdown Voltage Temperature Coefficient | αT | 0.1 | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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 | tin | • Matte tin lead-free plated • Halogen free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
1.5KE400CA - 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: Littelfuse datasheet (6 pp, sha256
0fe05864dc46cb8b, 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).
# 1.5KE400CA
**Littelfuse** · TVS · DO-201
1.5KE400CA from Littelfuse, 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 | A1 | passive | Bidirectional terminal 1 of the 1.5KE400CA axial lead, with no polarity and no cathode band, standing off up to VR 342 V, breaking down at 380-420 V at 1 mA, and clamping at a maximum of 548 V at 2.8 A peak pulse current. |
| 2 | A2 | passive | Bidirectional terminal 2 of the 1.5KE400CA axial lead, with no polarity and no cathode band, standing off up to VR 342 V, breaking down at 380-420 V at 1 mA, and clamping at a maximum of 548 V at 2.8 A peak pulse current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 | 380 | | 420 | V | @ IT = 1 mA | 2 |
| Reverse Stand-off Voltage | VR | | 342 | | V | | 2 |
| Test Current | IT | | 1 | | mA | | 2 |
| Maximum Clamping Voltage | VC | | | 548 | V | @ Ipp = 2.8 A | 2 |
| Maximum Peak Pulse Current | Ipp | | | 2.8 | A | | 2 |
| Maximum Reverse Leakage | IR | | | 1 | µA | @ VR | 2 |
| Peak Pulse Power Dissipation | PPPM | | | 1500 | W | 10/1000μs waveform (Fig.2) | 1 |
| Steady State Power Dissipation | PD | | | 6.5 | W | Infinite heat sink at TL=75ºC | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 | | 175 | °C | | 1 |
| Typical Thermal Resistance Junction to Lead | RθJL | | 15 | | °C/W | | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 75 | | °C/W | | 1 |
| Breakdown Voltage Temperature Coefficient | αT | | 0.1 | | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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 | | tin | • Matte tin lead-free plated • Halogen free and RoHS | 1 |
## CAD (KiCad official)
- Symbol: `1.5KE400CA`
- 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:** [Littelfuse datasheet](docs/1-5ke400ca-datasheet.pdf) (6 pp, sha256 `0fe05864dc46cb8b`, 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/1-5ke400ca-datasheet.pdf)