Fischer Elektronik Heatsink, 4°C/W 25 mm 50.8 mm 42 mm
- RS Stock No.:
- 189-8151
- Mfr. Part No.:
- SK129-50,8-STS-220
- Brand:
- Fischer Elektronik
Bulk discount available
Subtotal (1 unit)*
£5.49
(exc. VAT)
£6.59
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 6 unit(s) ready to ship
- Plus 639 unit(s) ready to ship from another location
- Plus 50 unit(s) shipping from 25 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 - 9 | £5.49 |
| 10 - 24 | £5.06 |
| 25 - 49 | £4.82 |
| 50 - 99 | £4.68 |
| 100 + | £4.26 |
*price indicative
- RS Stock No.:
- 189-8151
- Mfr. Part No.:
- SK129-50,8-STS-220
- Brand:
- Fischer Elektronik
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Fischer Elektronik | |
| Product Type | Heatsink | |
| Length | 50.8mm | |
| Width | 42 mm | |
| Height | 25mm | |
| Thermal Resistance | 4°C/W | |
| Colour | Black | |
| Finish | Black | |
| Compatible Package Type | TO-220 | |
| Standards/Approvals | RoHS | |
| Material | Aluminium | |
| Application | Cooling | |
| Select all | ||
|---|---|---|
Brand Fischer Elektronik | ||
Product Type Heatsink | ||
Length 50.8mm | ||
Width 42 mm | ||
Height 25mm | ||
Thermal Resistance 4°C/W | ||
Colour Black | ||
Finish Black | ||
Compatible Package Type TO-220 | ||
Standards/Approvals RoHS | ||
Material Aluminium | ||
Application Cooling | ||
- COO (Country of Origin):
- DE

Heat sink 4 → 6.5 KW for TO 220
Heatsinks in the SK 129 Series have tin-plated soldered pins that can be soldered and are ideal for mounting semiconductors vertically. They are available in the following lengths: 25.4 mm, 38.1 mm and 50.8 mm.
Related links
- Fischer Elektronik Heatsink 38.1 x 42 x 25mm, Clip
- Fischer Elektronik Heatsink 25.4 x 42 x 25mm, Clip
- Fischer Elektronik Heatsink 50.8 x 34.9 x 12.7mm, Clip
- Fischer Elektronik Heatsink 38.1 x 34.9 x 12.7mm, Clip
- Fischer Elektronik Heatsink 50.8 x 45 x 12.7mm, Clip
- Fischer Elektronik Heatsink 84 x 32.3 x 28mm, Clip
- Fischer Elektronik Heatsink 50 x 52.3 x 28mm, Clip
- Fischer Elektronik Heatsink 10.17K/W Adhesive Foil, Conductive Foil
