FK 240 SA 220 O

Heat Sink, TO-220, 16 °C/W, TO-220, 14.5 mm, 38.1 mm, 12.7 mm

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: FISCHER ELEKTRONIK
Product type: Natural Convection Heat Sinks
Thermal Resistance:16°C/W; Packages Cooled:TO-220; External Width - Metric:14.5mm; External Height - Metric:38.1mm; External Length -; Available until stocks are exhausted Alternative available
SVHC: No SVHC (25-Jun-2025)
Product Range: -
Packages Cooled: TO-220
Heat Sink Material: Aluminium
Thermal Resistance: 16°C/W
External Width - Metric: 14.5mm
External Height - Metric: 38.1mm
External Length - Metric: 12.7mm
External Width - Imperial: 0.57"
External Diameter - Metric: -
External Height - Imperial: 1.5"
External Length - Imperial: 0.5"
External Diameter - Imperial: -

Delivery and price
Units per pack	100
Price	1.42 €
Current stock	1000+
Lead time	30 days

Datasheet

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## **Attachable heatsink** 

– narrow version with better thermal resistance – max. 14.5 mm wide – 3 different lengths for varied dissipation power 

- takes less space than any other attachable heatsink 

– simple assembly by pushing the heatsink onto the TO 220 housing 

– the cooling fingers form spring clamps **(1+2)** , which pushes the TO 220 and it's mounting flange onto the heatsink **(3)** – optimum heat transfer due the constant pressure on the entire contact surface of the TO 220 cases 

– effective heat emmision with horizontal and vertical mounting 

without soldering lug 

## **art. no.** SY 

## **FK 242 SA 220 O art. no.** CT 

**FK 237 SA 220 O art. no.** CT 

## **FK 240 SA 220 O** 

***** = touch in edge of transistor 

**material:** aluminium **surface treatment:** black anodised 

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|**H**|**Heatsinks for D PAK**|➔|**C 17**|➔<br>**Technical introduction**|**H**<br>**A 2 - 7**|
|---|---|---|---|---|---|
||**Heatsinks for transistors**<br>**Silicone wafers**|➔<br>➔|**C 4 – 9**<br>**E 2 – 4**|➔<br>**U-shaped heatsink**<br>➔<br>**Aluminium oxide wafers**|**A 117 – 120**<br>**E 9 – 10**|
||**Mica wafers**|➔|**E 11**|➔<br>**Kapton insulator washers**|**E 8**|



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Updated at April 29, 2026

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