K4

SETsafe | SETfuse

106℃ 125℃ 130℃ 200℃ 250V 2A 插件,P=3.7mm Thermal Fuses (TCO) ROHS

Extended

Datasheetsetsafe-setfuse/K4

Category: Thermal Fuses (TCO)
Package: 插件,P=3.7mm
Pins: 2

Overview

The K4 is a thermal Fuse made by SETsafe | SETfuse in a 插件,P=3.7mm package with 2 pins. 106℃ 125℃ 130℃ 200℃ 250V 2A 插件,P=3.7mm Thermal Fuses (TCO) ROHS.

PCBKit's library has its KiCad symbol (Device:Fuse, from KiCad's library) and its footprint (EasyEDA_Cloud:FUSE-TH_L5.8-W2.3-P3.70-D0.5, from EasyEDA), ready for a KiCad board. 859 are in stock at JLCPCB (part C3032553). 11 open-source boards in 9 repositories on GitHub use it.

Symbol

Device:FuseFrom KiCad's library

Footprint

EasyEDA_Cloud:FUSE-TH_L5.8-W2.3-P3.70-D0.5From EasyEDA

Parameters

Current Rating: 2A
Height: 2.3mm
Holding Temperature: 106℃
Maximum Temperature Limit: 200℃
Operating Temperature: 125℃
Pitch: 3.7mm
Rated Functioning Temperature: 130℃
Voltage Rating: 250V
Width: 5.8mm

Order codes

K4LCSC C3032553

Pinout

The pins of the K4
Pin	Name	Type
1	—	Passive
2	—	Passive

Open-source boards using it

All 11

2 layers351.6 × 128.3 mm
TKL
calliah333/Kingsaver-Replacement-PCB
This has been prototyped and is confirmed working
191 parts8
2 layers304.8 × 95.3 mm
R68
rpedde/r68
68% keyboard
164 parts4GPL-2.0
2 layers391.2 × 166.5 mm
TKL
calliah333/11800-Replacement-PCB
This is a replacement PCB for the Cherry G80-11800
247 parts
2 layers360 × 140.1 mm
TKLTheSecond
Denrage/customkeyboard
QMK TKL Keyboard from Scratch
302 parts
2 layers285.8 × 95.3 mm
R60
rpedde/r60
Yet another 60% keyboard. This one is mine.
148 parts
4 layers121.3 × 123.8 mm
LamaKey fpga
Wagner-Sebastian/Lamakey
Fpga based split keyboard. Not yet working.
147 parts
2 layers385.8 × 133.8 mm
Aphrodite
wenbu/keyboard
KiCad component library, PCB schematics, layouts, etc. for custom keyboards
203 parts
2 layers
GH MXAlps mini
agodinhost/KiCad
Open Source KiCad Project Files
182 parts14

Show this part on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/parts/setsafe-setfuse/K4" title="K4 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/parts/setsafe-setfuse/K4.jpg" alt="K4" width="1200" height="900">

A picture that opens the part, for a README

[![K4](https://pcbkit.io/embed/parts/setsafe-setfuse/K4.jpg?size=s)](https://pcbkit.io/parts/setsafe-setfuse/K4)

Questions

Is there a KiCad symbol and footprint for the K4?

Yes. The symbol is Device:Fuse and the footprint EasyEDA_Cloud:FUSE-TH_L5.8-W2.3-P3.70-D0.5, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the K4?

插件,P=3.7mm, with 2 pins. Its footprint is drawn on this page.

Where is the K4 datasheet?

SETsafe | SETfuse publishes it: the Datasheet link on this page opens it.

Where can I order the K4?

JLCPCB lists it as part C3032553, with 859 in stock; the sellers' links on this page open their listings.

What can replace the K4?

Parts like it in the library: the K7 by SETsafe | SETfuse, the X4 by SETsafe | SETfuse, the X0 by SETsafe | SETfuse and the X18 by SETsafe | SETfuse. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the K4?

11 boards in 9 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

K4