P4KE220A

Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-204AL(DO-41)

P4KE220A from Littelfuse, in a DO-204AL(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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2	A	passive	Anode.

Key specifications

Parameter	Value
Manufacturer	Littelfuse
Package	DO-204AL(DO-41)
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 (uni-directional, A suffix)	VBR	209		231	V	@ IT = 1 mA	2
Maximum clamping voltage	VC			328	V	@ Ipp = 1.30 A	2
Maximum peak pulse current	Ipp			1.3	A		2
Maximum reverse leakage current	IR			1	µA	@ VR	2
Reverse stand-off voltage	VR		185		V		2
Peak pulse power dissipation, single die	PPPM			400	W	10/1000µs test waveform (Fig. 4), single die parts (Note 1)	1
Steady state power dissipation	PD			1.5	W	Infinite heat sink at TL = 75ºC	1
Peak forward surge current	IFSM			60	A	8.3ms single half sine wave, unidirectional only (Note 2)	1
Maximum instantaneous forward voltage	VF			3.5	V	@ 25A, unidirectional only, single die parts (Note 3)	1
Operating junction and storage temperature range	TJ, TSTG	-55		175	°C		1
Type A voltage tolerance (VBR)	VBR	-5		5	%	Type code A, uni-directional (5% VBR voltage tolerance)	6
Typical thermal resistance junction to lead	RθJL		60		°C/W		1
Typical thermal resistance junction to ambient	RθJA		100		°C/W		1
VBR temperature coefficient	αT		0.1		%	VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)); typical value	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	level interconnect is Pbfree and the terminal finish material is tin(Sn) (IPC/	1

CAD (KiCad official)

Symbol: P4KE220A
Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
3D model: DO-204AL(DO-41) (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Littelfuse datasheet (6 pp, sha256 cab61a39ecf2d397, 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

# P4KE220A

**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-204AL(DO-41)

P4KE220A from Littelfuse, in a DO-204AL(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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-204AL(DO-41) |
| 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 (uni-directional, A suffix) | VBR | 209 |  | 231 | V | @ IT = 1 mA | 2 |
| Maximum clamping voltage | VC |  |  | 328 | V | @ Ipp = 1.30 A | 2 |
| Maximum peak pulse current | Ipp |  |  | 1.3 | A |  | 2 |
| Maximum reverse leakage current | IR |  |  | 1 | µA | @ VR | 2 |
| Reverse stand-off voltage | VR |  | 185 |  | V |  | 2 |
| Peak pulse power dissipation, single die | PPPM |  |  | 400 | W | 10/1000µs test waveform (Fig. 4), single die parts (Note 1) | 1 |
| Steady state power dissipation | PD |  |  | 1.5 | W | Infinite heat sink at TL = 75ºC | 1 |
| Peak forward surge current | IFSM |  |  | 60 | A | 8.3ms single half sine wave, unidirectional only (Note 2) | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 3.5 | V | @ 25A, unidirectional only, single die parts (Note 3) | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 175 | °C |  | 1 |
| Type A voltage tolerance (VBR) | VBR | -5 |  | 5 | % | Type code A, uni-directional (5% VBR voltage tolerance) | 6 |
| Typical thermal resistance junction to lead | RθJL |  | 60 |  | °C/W |  | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 100 |  | °C/W |  | 1 |
| VBR temperature coefficient | αT |  | 0.1 |  | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)); typical value | 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 | level interconnect is Pbfree and the terminal finish material is tin(Sn) (IPC/ | 1 |

## CAD (KiCad official)

- Symbol: `P4KE220A`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-204AL(DO-41) (KiCad packages3D, STEP)

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590892660137664512) (6 pp, sha256 `cab61a39ecf2d397`, 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/p4ke220a-datasheet.pdf)