Heatsinks

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Show Selected	Part No.	Indiv. Part No.	Manufacturer	Availability	Quantity	Series	Manufacturer	Type	Material	Colour	Assembly Type	Motor Position	Cell size	Dimension: Length	Dimension: Width	Dimension: Height	Thermal resistance
01	Manufacturers Part No. FK 233 220 SA TO 220 (FK233220SA) Fischer Elektronik Finger shaped heatsinks FK 233 Aluminum anodized black Screw mounting 33mm 27mm	Customer Part No. Customer Project No.	Fischer Elektronik	100 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	FK 233	Fischer Elektronik	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	TO-220	33.0 mm	27.0 mm	7.0 mm	20.2 K/W
02	Manufacturers Part No. FK 224 SA 220 2 TO 220 (FK224SA2202) Fischer Elektronik Attachable heatsinks FK 224 Aluminum anodized black Clip mounting 29,4mm 25mm	Customer Part No. Customer Project No.	Fischer Elektronik	90 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	FK 224	Fischer Elektronik	Attachable heatsinks	Aluminum	black	Clip mounting	vertical	TO-220	29.4 mm	25.0 mm	8.3 mm	18.0 K/W
03	Manufacturers Part No. FK 222 SA TO 220 (FK222SA) Fischer Elektronik Finger shaped heatsinks FK 222 Aluminum anodized black Screw mounting 33,8mm 25,4mm	Customer Part No. Customer Project No.	Fischer Elektronik	100 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	FK 222	Fischer Elektronik	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	TO-220	33.8 mm	25.4 mm	12.7 mm	20.0 K/W
04	Manufacturers Part No. SK 129 25,4 STS (SK12925.4STS) Fischer Elektronik Standard extrudes heatsinks SK 129 anodized black Screw mounting 25,4mm 42mm	Customer Part No. Customer Project No.	Fischer Elektronik	150 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	SK 129	Fischer Elektronik	Standard extrudes heatsinks		black	Screw mounting	N/A	SOT32 TO-220 TO-3	25.4 mm	42.0 mm	25.0 mm	7.8 K/W
05	Manufacturers Part No. SK 409 38,1 STS (SK40938.1STS) Fischer Elektronik Standard extrudes heatsinks SK 409 anodized black Screw mounting 38,1mm 45mm	Customer Part No. Customer Project No.	Fischer Elektronik	9 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	SK 409	Fischer Elektronik	Standard extrudes heatsinks		black	Screw mounting	N/A	TO-220 TO-3	38.1 mm	45.0 mm	12.7 mm	7.0 K/W
06	Manufacturers Part No. FK 239 SA 32 SOT 32 (FK239SA32) Fischer Elektronik Finger shaped heatsinks FK 239 Aluminum anodized black Screw mounting 19,5mm 19,05mm	Customer Part No. Customer Project No.	Fischer Elektronik	100 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	FK 239	Fischer Elektronik	Finger shaped heatsinks	Aluminum	black	Screw mounting	N/A	SOT32	19.5 mm	19.05 mm	9.25 mm	24.0 K/W
07	Manufacturers Part No. ICK 35 SA TO 220 (ICK35SA) Fischer Elektronik Standard extrudes heatsinks ICK 35 anodized black 35mm 18,5mm	Customer Part No. Customer Project No.	Fischer Elektronik	32 Pcs. Planned Delivery Time Ø 3 Weeks Available (from stock)	(at least 10 or mul. of 10)	ICK 35	Fischer Elektronik	Standard extrudes heatsinks		black		N/A	TO-220	35.0 mm	18.5 mm	15.0 mm	15.0 K/W
08	Manufacturers Part No. THF 409 220 2 (THF409-220-2) Fischer Elektronik Transistor retaining springs THF Steel silver Clip mounting New	Customer Part No. Customer Project No.	Fischer Elektronik	125 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver	Clip mounting	N/A
09	Manufacturers Part No. THF 409 TO 220 (THF409-TO-220) Fischer Elektronik Transistor retaining springs THF Steel silver Clip mounting New	Customer Part No. Customer Project No.	Fischer Elektronik	125 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver	Clip mounting	N/A
10	Manufacturers Part No. THFU 3 (THFU3) Fischer Elektronik Transistor retaining springs THF Steel silver New	Customer Part No. Customer Project No.	Fischer Elektronik	65 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver		N/A
11	Manufacturers Part No. THF 129 TO220 (THF129) Fischer Elektronik Transistor retaining springs THF Steel silver Clip mounting New	Customer Part No. Customer Project No.	Fischer Elektronik	125 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver	Clip mounting	N/A	TO-220
12	Manufacturers Part No. THF 409 220 1 (THF409-220-1) Fischer Elektronik Transistor retaining springs THF Steel silver Clip mounting New	Customer Part No. Customer Project No.	Fischer Elektronik	125 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver	Clip mounting	N/A
13	Manufacturers Part No. THF 409 SOT 32 (THF409-SOT-3) Fischer Elektronik Transistor retaining springs THF Steel silver Clip mounting New	Customer Part No. Customer Project No.	Fischer Elektronik	125 Pcs. Planned Delivery Time Ø 2 Weeks Available (from stock)	(at least 5 or mul. of 5)	THF	Fischer Elektronik	Transistor retaining springs	Steel	silver	Clip mounting	N/A
14	Manufacturers Part No. SK 12 25 SA-32 (UKS12-TO126) Fischer Elektronik U-Extrudes heatsinks SK 12 Aluminum black Screw mounting 25mm 12mm	Customer Part No. Customer Project No.	Fischer Elektronik	130 Pcs. Planned Delivery Time Ø 8 Weeks Available (from stock)	(at least 10 or mul. of 10)	SK 12	Fischer Elektronik	U-Extrudes heatsinks	Aluminum	black	Screw mounting	N/A	SOT32	25.0 mm	12.0 mm	15.0 mm	30.0 K/W
15	Manufacturers Part No. V7236C (FK301) Assmann WSW Finger shaped heatsinks V72_ Aluminum silver Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	16.600 Pcs. Planned Delivery Time Ø 10 Weeks Available (from stock)	(at least 100 or mul. of 100)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	silver	Screw mounting	N/A	TO-220	19.1 mm	13.3 mm	12.7 mm	21.0 K/W
16	Manufacturers Part No. V7236C1 (FK301A) Assmann WSW Finger shaped heatsinks V72_ Aluminum black Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	18.200 Pcs. Next Stock Receipt Week 32/2026 (10.000 Pcs.) Available (from stock)	(at least 100 or mul. of 100)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	black	Screw mounting	N/A	TO-220	19.1 mm	13.3 mm	12.7 mm	24.0 K/W
17	Manufacturers Part No. V7237A (FK301PA) Assmann WSW Finger shaped heatsinks V72_ Aluminum black Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	5.000 Pcs. Planned Delivery Time Ø 16 Weeks Available (from stock)	(at least 50 or mul. of 50)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	TO-220	19.1 mm	13.3 mm	6.35 mm	28.0 K/W
18	Manufacturers Part No. V7236B (FK302) Assmann WSW Finger shaped heatsinks V72_ Aluminum silver Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	9.500 Pcs. Planned Delivery Time Ø 9 Weeks Available (from stock)	(at least 25 or mul. of 25)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	silver	Screw mounting	N/A	TO-220	19.1 mm	13.3 mm	9.53 mm	24.0 K/W
19	Manufacturers Part No. V7236B1 (FK302A) Assmann WSW Finger shaped heatsinks V72_ Aluminum black Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	9.000 Pcs. Next Stock Receipt Week 32/2026 (2.500 Pcs.) Available (from stock)	(at least 100 or mul. of 100)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	black	Screw mounting	N/A	TO-220	19.1 mm	13.3 mm	9.53 mm	24.0 K/W
20	Manufacturers Part No. V7237B (FK302PA) Assmann WSW Finger shaped heatsinks V72_ Aluminum black Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	1.150 Pcs. Next Stock Receipt Week 36/2026 (1.000 Pcs.) Available (from stock)	(at least 50 or mul. of 50)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	TO-220	19.1 mm	13.3 mm	9.53 mm	24.0 K/W
21	Manufacturers Part No. V7236A (FK303) Assmann WSW Finger shaped heatsinks V72_ Aluminum silver Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	1.600 Pcs. Next Stock Receipt Week 36/2026 (1.250 Pcs.) Available (from stock)	(at least 25 or mul. of 25)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	silver	Screw mounting	N/A	TO-220	19.1 mm	13.3 mm	6.35 mm	29.0 K/W
22	Manufacturers Part No. V7237C (FK303PA) Assmann WSW Finger shaped heatsinks V72_ Aluminum black Screw mounting 19,1mm 13,3mm	Customer Part No. Customer Project No.	Assmann WSW	50 Pcs. Next Stock Receipt Week 36/2026 (4.000 Pcs.) Available (from stock)	(at least 50 or mul. of 50)	V72_	Assmann WSW	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	TO-220	19.1 mm	13.3 mm	12.7 mm	21.0 K/W
23	Manufacturers Part No. FK 220 SA 220 TO 220 (FK220SA220) Fischer Elektronik Attachable heatsinks FK 220 Aluminum black 7mm 25mm	Customer Part No. Customer Project No.	Fischer Elektronik	320 Pcs. Planned Delivery Time Ø 8 Weeks Available (from stock)	(at least 10 or mul. of 10)	FK 220	Fischer Elektronik	Attachable heatsinks	Aluminum	black		N/A	SOT32 TO-220	7.0 mm	25.0 mm	20.5 mm	25.0 K/W
24	Manufacturers Part No. FK 216 SA CB (FK216SACB) Fischer Elektronik Finger shaped heatsinks FK 216 Aluminum black Screw mounting 33mm 25,4mm	Customer Part No. Customer Project No.	Fischer Elektronik	120 Pcs. Next Stock Receipt Week 32/2026 (1.000 Pcs.) Available (from stock)	(at least 10 or mul. of 10)	FK 216	Fischer Elektronik	Finger shaped heatsinks	Aluminum	black	Screw mounting	vertical	SOT32 TO-220	33.0 mm	25.4 mm	13.0 mm	15.0 K/W
25	Manufacturers Part No. FK 271 MI 247 H TO 218 (FK271MI247H) Fischer Elektronik Attachable heatsinks FK 271 Copper 26mm 23mm	Customer Part No. Customer Project No.	Fischer Elektronik	0 Pcs. Planned Delivery Time Ø 8 Weeks Available on order	(at least 100 or mul. of 100)	FK 271	Fischer Elektronik	Attachable heatsinks	Copper			horizontal	TO-247	26.0 mm	23.0 mm	9.0 mm	20.2 K/W

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