Transistor Heat Sinks 29

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Part	Manufacturer	Thermal Device Type	Profile	Body Material	Device Used On	Construction	Fin Orientation	Thermal Resistance	Height	Width	Finish	Color	Additional Features	Packing Method	Weight	Length
DA-T263-101E-TR	Ohmite Manufacturing	Heat Sink		Aluminium	Transistor	Extruded			0.4 in (10.16 mm)	0.5 in (12.7 mm)	Anodized	Black		Tape and Reel, 13 in	3.8 g	1.02 in (25.91 mm)
576802B04000G	Boyd	Heat Sink	U	Aluminium	Transistor	Clip		27.3 Ω	0.75 in (19.05 mm)	0.5 in (12.7 mm)	Anodized	Black				0.57 in (14.48 mm)
FK220SA220	Fischer Elektronik & Kg	Heat Sink		Aluminium Alloy	Transistor		Transverse	25 Ω	0.807 in (20.5 mm)	0.276 in (7 mm)	Anodized	Black				0.984 in (25 mm)
507302B00000G	Boyd	Heat Sink	Screw	Aluminium	Transistor	Fin	Transverse	24 Ω	0.38 in (9.65 mm)	0.75 in (19.05 mm)	Anodized	Black	Low Profile			0.75 in (19.05 mm)
WA-T247-101E	Ohmite Manufacturing	Heat Sink	Clip	Aluminium Alloy	Transistor	Extruded	Longitudinal	11 Ω	1.201 in (30.5 mm)	0.63 in (16 mm)	Anodized	Black		Bulk	12 g	0.909 in (23.1 mm)
FK224MI2201	Fischer Elektronik & Kg	Heat Sink		Aluminium	Transistor			18 Ω	0.327 in (8.3 mm)	0.984 in (25 mm)						1.157 in (29.4 mm)
FK237SA220V	Fischer Elektronik & Kg	Heat Sink		Aluminium	Transistor				0.5 in (12.7 mm)	0.571 in (14.5 mm)	Anodized	Black				0.75 in (19.05 mm)
FK237SA220H	Fischer Elektronik & Kg	Heat Sink		Aluminium	Transistor	Fin			0.5 in (12.7 mm)	0.571 in (14.5 mm)	Anodized	Black				0.75 in (19.05 mm)
7106DG	Boyd	Heat Sink		Copper	Transistor			15 Ω	0.375 in (9.52 mm)	0.59 in (14.99 mm)	Tin					1.02 in (25.91 mm)
DA-T263-101E	Ohmite Manufacturing	Heat Sink		Aluminium	Transistor	Extruded	Fin Pin		0.4 in (10.16 mm)	0.5 in (12.7 mm)	Anodized	Black		Bulk	3.8 g	1.02 in (25.91 mm)
6399BG	Boyd	Heat Sink		Aluminium	Transistor	Extruded	Radial	3.3 Ω	2 in (50.8 mm)	1 in (25.4 mm)	Anodized	Black				1.65 in (41.91 mm)
WA400-8P	Schaffner Holding Ag	Heat Sink			Transistor			18 Ω	0.984 in (25 mm)	0.433 in (11 mm)						0.63 in (16 mm)
SK52530	Fischer Elektronik & Kg	Heat Sink			Transistor	Extruded	Longitudinal	7.8 Ω	1.102 in (28 mm)	0.764 in (19.4 mm)						1.181 in (30 mm)
SK48100SA	Fischer Elektronik & Kg	Heat Sink			Transistor	Extruded	Longitudinal	3.5 Ω	0.787 in (20 mm)	2.559 in (65 mm)	Anodized	Black				3.937 in (100 mm)
SK52515	Fischer Elektronik & Kg	Heat Sink			Transistor	Extruded	Longitudinal	13.3 Ω	1.102 in (28 mm)	0.764 in (19.4 mm)						0.591 in (15 mm)
EV-T220-38E	Ohmite Manufacturing	Heat Sink		Aluminium Alloy	Transistor		Longitudinal	11.4 Ω	1.5 in (38.1 mm)	0.5 in (12.7 mm)				Bulk	18 g	1.378 in (35 mm)
WA400-11P	Schaffner Holding Ag	Heat Sink			Transistor	U		18 Ω	0.984 in (25 mm)	0.433 in (11 mm)						0.63 in (16 mm)
PSD1-2CB	Cts	Heat Sink	Screw		Transistor	U	Transverse	14.4 Ω	2.18 in (55.37 mm)	0.5 in (12.7 mm)		Black				1.38 in (35.05 mm)
SK6875SA	Fischer Elektronik & Kg	Heat Sink	Screw		Transistor	Extruded	Longitudinal	5.85 Ω	1.299 in (33 mm)	1.811 in (46 mm)	Anodized	Black				2.953 in (75 mm)
574602B03300	Boyd	Heat Sink		Aluminium	Transistor		Folded Back		0.027 in (0.69 mm)	0.016 in (0.395 mm)	Black Anodized	Black				0.034 in (0.86 mm)
578622B03200G	Boyd	Heat Sink	U	Aluminium	Transistor	Fin	Transverse	13.2 Ω	1 in (25.4 mm)	0.5 in (12.7 mm)	Anodized	Black				1.48 in (37.59 mm)
PF433G	Boyd	Heat Sink	Clip	Aluminium	Transistor		Transverse		0.768 in (19.5 mm)	0.512 in (13 mm)	Anodized	Black				0.5 in (12.7 mm)
SK481000SA	Fischer Elektronik & Kg	Heat Sink			Transistor	Extruded	Longitudinal	3.5 Ω	0.787 in (20 mm)	2.559 in (65 mm)	Anodized	Black				39.37 in (1000 mm)
SK681000SA	Fischer Elektronik & Kg	Heat Sink	Screw		Transistor	Extruded	Longitudinal	5.85 Ω	1.299 in (33 mm)	1.811 in (46 mm)	Anodized	Black				39.37 in (1000 mm)
SK68100SA	Fischer Elektronik & Kg	Heat Sink	Screw		Transistor	Extruded	Longitudinal	5.85 Ω	1.299 in (33 mm)	1.811 in (46 mm)	Anodized	Black				3.937 in (100 mm)
V5641A-T	Assmann Wsw Components	Heat Sink		Aluminium Alloy	Transistor		Folded Back	21 Ω	0.252 in (6.4 mm)	0.878 in (22.3 mm)	Anodized	Black				1.409 in (35.8 mm)
FK235MIL1	Fischer Elektronik & Kg	Heat Sink	Screw		Transistor		Transverse	16 Ω	1.102 in (28 mm)	0.591 in (15 mm)						0.728 in (18.5 mm)
FK245MI247H	Fischer Elektronik & Kg	Heat Sink	Clip	Copper	Transistor	U	Transverse	20.5 Ω	0.354 in (9 mm)	0.787 in (20 mm)						1.063 in (27 mm)
SK12950,8STS	Fischer Elektronik & Kg	Heat Sink	Screw		Transistor	Extruded	Longitudinal	5.3 Ω	0.984 in (25 mm)	1.654 in (42 mm)	Anodized	Black				2 in (50.8 mm)

Heat Sinks

Heat sinks are passive cooling devices that are used to dissipate heat generated by electronic components such as CPUs, GPUs, and power amplifiers. They work by increasing the surface area available for heat dissipation, allowing heat to be transferred more efficiently from the component to the surrounding air.

Heat sinks come in a variety of shapes and sizes, including finned heat sinks, pin fin heat sinks, and heat pipes. They are typically made of aluminum or copper, which have high thermal conductivity and good heat dissipation properties.

Heat sinks are mounted directly onto the electronic component using thermal interface material, such as thermal paste or thermal pads. The thermal interface material fills any gaps between the heat sink and the component, ensuring efficient heat transfer.

Heat sinks offer several advantages over other types of cooling devices. They are passive, which means they do not require any additional power to operate. They are also highly reliable and have no moving parts that can wear out or break down over time.

However, heat sinks also have some limitations, such as limited cooling capacity and susceptibility to external disturbances. They also require adequate airflow to be effective, which can be a challenge in confined spaces.