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TO-3 Heat Sinks

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (INR) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Designed for	Mounting Style	Heatsink Material	Fin Style	Thermal Resistance	Length	Width	Height	Type
Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, 6.9mm dia. Hole Mounting Hole Pattern 421F Wakefield Thermal 1: ₹3,169.06 60In Stock	Mfr. Part No. 421F Mouser Part No 567-421F	Wakefield Thermal	Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, 6.9mm dia. Hole Mounting Hole Pattern	Datasheet	60In Stock	₹3,169.06 ₹3,003.78 ₹2,870.98 ₹2,849.00 View ₹2,848.05 ₹2,779.26 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Extruded Axial Fin	0.7 C/W	76.2 mm	120.65 mm	66.67 mm	Component
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink, No Hole Pattern, 31.8mm Height 680-125K Wakefield Thermal 1: ₹1,573.54 117In Stock	Mfr. Part No. 680-125K Mouser Part No 567-680-125K	Wakefield Thermal	Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink, No Hole Pattern, 31.8mm Height	Datasheet	117In Stock	₹1,573.54 ₹1,466.54 ₹1,379.60 ₹1,317.50 ₹1,158.90	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Through Hole	Aluminum	Omnidirectional Fin	1.5 C/W	46 mm	46 mm	31.8 mm	Component
Heat Sinks Basket Heat Sink for TO-3, Fold Back Fin, Horizontal, 5.5 Degree C/W, 33.27mm 569003B00000G Aavid 1: ₹371.65 1,473In Stock	Mfr. Part No. 569003B00000G Mouser Part No 532-569003B00	Aavid	Heat Sinks Basket Heat Sink for TO-3, Fold Back Fin, Horizontal, 5.5 Degree C/W, 33.27mm	Datasheet	1,473In Stock	₹371.65 ₹346.81 ₹319.10 ₹300.00 View ₹281.84 ₹271.33	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Folded Back Fin	5.5 C/W	46.482 mm	46.482 mm	33.274 mm	Component
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.4 Degree C/W, 25mm PF527G Aavid 1: ₹1,674.82 266In Stock	Mfr. Part No. PF527G Mouser Part No 532-PF-527	Aavid	Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.4 Degree C/W, 25mm	Datasheet	266In Stock	₹1,674.82 ₹1,562.08 ₹1,497.11 ₹1,496.16 View ₹1,314.63 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3		Aluminum						Component
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 8.4 Degree C/W, 25.4mm 501503B00000G Aavid 1: ₹190.12 4,753In Stock	Mfr. Part No. 501503B00000G Mouser Part No 532-501503B00	Aavid	Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 8.4 Degree C/W, 25.4mm	Datasheet	4,753In Stock	₹190.12 ₹174.84 ₹170.06 ₹165.28 View ₹156.69 ₹147.13 ₹137.58 ₹130.89 ₹123.25	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Straight Fin	8.4 C/W	47.752 mm	35.56 mm	25.4 mm	Component
Heat Sinks Space-Saving, Expandable Collar Heat Sink, TO3, Horizontal, 12.5 C/W, Black 579103B00000G Aavid 1: ₹248.40 2,707In Stock	Mfr. Part No. 579103B00000G Mouser Part No 532-579103B00	Aavid	Heat Sinks Space-Saving, Expandable Collar Heat Sink, TO3, Horizontal, 12.5 C/W, Black	Datasheet	2,707In Stock	₹248.40 ₹226.43 ₹219.74 ₹208.28 View ₹195.86 ₹185.35 ₹177.70 ₹171.02 ₹156.69	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Channel Cut Fin	12.5 C/W	39.116 mm	28.575 mm	22.098 mm	Component
Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x76.2x11.7mm 623A Wakefield Thermal 1: ₹1,041.39 215In Stock	Mfr. Part No. 623A Mouser Part No 567-623A	Wakefield Thermal	Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x76.2x11.7mm	Datasheet	215In Stock	₹1,041.39 ₹960.18 ₹914.32 ₹879.92 View ₹838.84 ₹808.27 ₹778.65 ₹750.94	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Rectangular Fin	1.5 C/W	76.2 mm	120.65 mm	11.7 mm	Component
Heat Sinks Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 7.2 Degree C/W, 12.7mm 500103B00000G Aavid 1: ₹331.52 2,600In Stock	Mfr. Part No. 500103B00000G Mouser Part No 532-500103B00	Aavid	Heat Sinks Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 7.2 Degree C/W, 12.7mm	Datasheet	2,600In Stock	₹331.52 ₹307.64 ₹300.00 ₹282.80 View ₹266.56 ₹248.40 ₹240.76 ₹229.30	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum		7.2 C/W	45.97 mm	45.97 mm	12.7 mm	Component
Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis, No Hole, 120.6x38.1x11.7mm 621K Wakefield Thermal 1: ₹484.39 303In Stock	Mfr. Part No. 621K Mouser Part No 567-621K	Wakefield Thermal	Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis, No Hole, 120.6x38.1x11.7mm	Datasheet	303In Stock	₹484.39 ₹470.06 ₹462.41 ₹425.15 View ₹404.13 ₹403.18 ₹394.58 ₹373.56 ₹368.78	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Rectangular Fin	2 C/W	120.6 mm	38.1 mm	11.7 mm	Component
Heat Sinks Double-Surface Heat Sink for TO3, V Hole Pattern, 120.7mm 401V Wakefield Thermal 1: ₹992.66 108In Stock	Mfr. Part No. 401V Mouser Part No 567-401V	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO3, V Hole Pattern, 120.7mm	Datasheet	108In Stock	₹992.66 ₹971.64 ₹970.69	Min.: 1 Mult.: 1	Heat Sinks	TO-3		Aluminum	Extruded Radial Fin	1.5 C/W	38.1 mm	120.65 mm	31.75 mm	Component
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.8 Degree C/W, 31.75mm 501603B00000G Aavid 1: ₹885.66 929In Stock	Mfr. Part No. 501603B00000G Mouser Part No 532-501603B00	Aavid	Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.8 Degree C/W, 31.75mm	Datasheet	929In Stock	₹885.66 ₹848.40 ₹801.58 ₹753.81 View ₹707.00 ₹706.04 ₹599.04	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Straight Fin	7.8 C/W	47.752 mm	35.56 mm	31.75 mm	Component
Heat Sinks Double-Surface Heat Sink for TO-3 Case, 120.7x76.2x31.8mm, 6.9mm Dia. Mount Hole 403F Wakefield Thermal 1: ₹1,926.09 89In Stock	Mfr. Part No. 403F Mouser Part No 567-403F	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO-3 Case, 120.7x76.2x31.8mm, 6.9mm Dia. Mount Hole	Datasheet	89In Stock	₹1,926.09 ₹1,706.34 ₹1,646.15 ₹1,572.59 View ₹1,571.63 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Through Hole	Aluminum	Extruded Radial Fin	0.9 C/W	111.1 mm	76.2 mm	31.8 mm	Component
Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x38.1x11.7mm 621A Wakefield Thermal 1: ₹506.36 301In Stock	Mfr. Part No. 621A Mouser Part No 567-621A	Wakefield Thermal	Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x38.1x11.7mm		301In Stock	₹506.36 ₹480.57 ₹468.15 ₹441.39 View ₹415.60 ₹388.85 ₹375.47 ₹349.68	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Rectangular Fin	2 C/W	120.6 mm	38.1 mm	11.7 mm	Component
Heat Sinks Heatsink, T03 HS01 Apex Microtechnology 1: ₹3,768.10 256In Stock 666Expected 04-11-2026	Mfr. Part No. HS01 Mouser Part No 137-HS01	Apex Microtechnology	Heat Sinks Heatsink, T03 This item may require additional import fees and documentation. Customs delays may also occur.	Datasheet	256In Stock 666Expected 04-11-2026	₹3,768.10 ₹3,474.79 ₹3,257.91 ₹3,061.10 View ₹2,950.28 ₹2,808.88	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Chassis	Aluminum	Straight Fin	11.6 C/W	1.6 in	1 in	1 in	Component
Heat Sinks Heatsink, T03 HS02 Apex Microtechnology 1: ₹3,930.52 261In Stock 276Expected 29-10-2026	Mfr. Part No. HS02 Mouser Part No 137-HS02	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	261In Stock 276Expected 29-10-2026	₹3,930.52 ₹3,623.83 ₹3,398.36 ₹3,192.95 View ₹3,077.34 ₹2,930.21	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Chassis	Aluminum	Vertical Fin	4.5 C/W	1.81 in	1.81 in	1.5 in	Component
Heat Sinks Heatsink, T03 HS13 Apex Microtechnology 1: ₹13,763.49 31In Stock	Mfr. Part No. HS13 Mouser Part No 137-HS13	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	31In Stock	₹13,763.49 ₹12,366.70 ₹11,598.56 ₹11,177.22	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Chassis	Aluminum	Straight Fin	1.48 C/W	5.5 in	4.812 in	1.312 in	Component
Heat Sinks BGA Heat Sink, High Performance, Stamped, No TIM, TO-3, 45.21x45.21x30.99mm ATS-PCBT1088 Advanced Thermal Solutions 1: ₹448.08 85In Stock	Mfr. Part No. ATS-PCBT1088 Mouser Part No 984-ATS-PCBT1088	Advanced Thermal Solutions	Heat Sinks BGA Heat Sink, High Performance, Stamped, No TIM, TO-3, 45.21x45.21x30.99mm	Datasheet	85In Stock	₹448.08 ₹401.27 ₹382.16 ₹368.78 View ₹354.45 ₹334.39 ₹321.01 ₹312.42 ₹307.64	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Straight Fin	6 C/W	45.21 mm	45.21 mm	30.99 mm	Component
Heat Sinks Heatsink, T03, PDIP, Pwr Pkg, H2O-cooled HS11 Apex Microtechnology 1: ₹30,528.85 2In Stock	Mfr. Part No. HS11 Mouser Part No 137-HS11	Apex Microtechnology	Heat Sinks Heatsink, T03, PDIP, Pwr Pkg, H2O-cooled	Datasheet	2In Stock	₹30,528.85 ₹6,916.14 ₹6,454.68 ₹6,224.43 View ₹5,995.14 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Chassis	Aluminum	Straight Fin	0.1 C/W	8 in	6 in	2 mm	Component
Heat Sinks Heatsink, T03 HS14 Apex Microtechnology 1: ₹7,356.58 29In Stock	Mfr. Part No. HS14 Mouser Part No 137-HS14	Apex Microtechnology	Heat Sinks Heatsink, T03 This item may require additional import fees and documentation. Customs delays may also occur.	Datasheet	29In Stock	₹7,356.58 ₹6,664.87 ₹6,219.65 ₹5,998.00 View ₹5,777.30 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Chassis	Aluminum	Straight Fin	2 C/W	4.406 in	3 in	1.312 in	Component
Heat Sinks Hat Section Heat Sink for TO-3, Horizontal, Black Anodized, 50.8x44.45x9.52mm 506007B00000G Aavid 1: ₹187.26 4,717In Stock	Mfr. Part No. 506007B00000G Mouser Part No 532-506007B00	Aavid	Heat Sinks Hat Section Heat Sink for TO-3, Horizontal, Black Anodized, 50.8x44.45x9.52mm	Datasheet	4,717In Stock	₹187.26 ₹170.06 ₹164.33 ₹158.60 View ₹157.64 ₹145.22	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Channel Cut Fin	7 C/W	50.8 mm	44.45 mm	9.525 mm	Component
Heat Sinks Square Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 5 Degree C/W, 31.75mm 500403B00000G Aavid 1: ₹854.13 1,745In Stock	Mfr. Part No. 500403B00000G Mouser Part No 532-500403B00	Aavid	Heat Sinks Square Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 5 Degree C/W, 31.75mm	Datasheet	1,745In Stock	₹854.13 ₹853.17 Quote Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Slanted Vane	5 C/W	45.974 mm	45.974 mm	31.75 mm	Component
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 12 Degree C/W, 12.7mm 501303B00000G Aavid 1: ₹608.59 6,973In Stock	Mfr. Part No. 501303B00000G Mouser Part No 532-501303B00	Aavid	Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 12 Degree C/W, 12.7mm	Datasheet	6,973In Stock	₹608.59 ₹571.33 ₹503.50 ₹479.61 View ₹462.41 ₹392.67	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Straight Fin	12 C/W	47.752 mm	35.56 mm	12.7 mm	Component
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 10 Degree C/W, 19.05mm 501403B00000G Aavid 1: ₹494.90 1,186In Stock	Mfr. Part No. 501403B00000G Mouser Part No 532-501403B00	Aavid	Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 10 Degree C/W, 19.05mm	Datasheet	1,186In Stock	₹494.90 ₹470.06 ₹421.33 ₹402.22 View ₹382.16 ₹363.05 ₹352.54 ₹342.03 ₹334.39	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Screw	Aluminum	Straight Fin	10 C/W	47.752 mm	35.56 mm	19.05 mm	Component
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 31.8mm Height 680-125A Wakefield Thermal 1: ₹1,689.15 206In Stock 750Expected 11-12-2026	Mfr. Part No. 680-125A Mouser Part No 567-680-125A	Wakefield Thermal	Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 31.8mm Height	Datasheet	206In Stock 750Expected 11-12-2026	₹1,689.15 ₹1,636.60 ₹1,422.59 ₹1,337.56 View ₹1,261.13 ₹1,215.27 ₹1,174.19 Quote	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Through Hole	Aluminum	Omnidirectional Fin	1.5 C/W	46 mm	46 mm	31.75 mm	Component
Heat Sinks Highest Efficiency/Lowest Unit Cost Heat Sink for TO-3, 33.3mm Height 690-3B Wakefield Thermal 1: ₹301.91 2,018In Stock	Mfr. Part No. 690-3B Mouser Part No 567-690-3B	Wakefield Thermal	Heat Sinks Highest Efficiency/Lowest Unit Cost Heat Sink for TO-3, 33.3mm Height Learn More about Wakefield Thermal wakefield vette 690 extruded heat sinks	Datasheet	2,018In Stock	₹301.91 ₹283.75 ₹262.74 ₹239.81 View ₹228.34 ₹169.11	Min.: 1 Mult.: 1	Heat Sinks	TO-3	Through Hole	Aluminum	Omnidirectional Fin	2 C/W	47.24 mm	47.24 mm	33.27 mm	Component