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TO-3 Thermal Management

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, (1) TO3 Mounting Hole Pattern 421A Wakefield Thermal 1: €26.09 66In Stock	Mfr. Part No. 421A Mouser Part No 567-421A	Wakefield Thermal	Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, (1) TO3 Mounting Hole Pattern	Datasheet	66In Stock	€26.09 €24.48 €22.54 €21.52 View €19.98 €19.09 €18.92 Quote	Min.: 1 Mult.: 1
Heat Sinks Heat Sink for TO3, 120.7x140.2x66.7mm, (1) TO3 Mounting Hole Pattern 423A Wakefield Thermal 1: €29.28 31In Stock	Mfr. Part No. 423A Mouser Part No 567-423-A	Wakefield Thermal	Heat Sinks Heat Sink for TO3, 120.7x140.2x66.7mm, (1) TO3 Mounting Hole Pattern	Datasheet	31In Stock	€29.28 €25.38 €24.64 €22.04 View €22.01 Quote	Min.: 1 Mult.: 1
Heat Sinks Basket Heat Sink, TO3, Space-Saving, Horizontal, 13.4 Degree C/W, 19.05mm 575703B00000G Aavid 1: €2.47 538In Stock 6,000Expected 23/04/2027	Mfr. Part No. 575703B00000G Mouser Part No 532-575703B00	Aavid	Heat Sinks Basket Heat Sink, TO3, Space-Saving, Horizontal, 13.4 Degree C/W, 19.05mm	Datasheet	538In Stock 6,000Expected 23/04/2027	€2.47 €2.18 €2.08 €2.00 View €1.91 €1.84 €1.80 €1.77 €1.74	Min.: 1 Mult.: 1
Heat Sinks Snap-On Cover for TO-3, Nylon, Black 8909NBG Aavid 1: €0.284 3,363In Stock	Mfr. Part No. 8909NBG Mouser Part No 532-8909NBG	Aavid	Heat Sinks Snap-On Cover for TO-3, Nylon, Black	Datasheet	3,363In Stock	€0.284 €0.261 €0.259	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO3, 120.7x38.1x31.8mm, (1) TO3 Hole Mount Pattern 401A Wakefield Thermal 1: €14.19 6In Stock 112Expected 22/02/2027	Mfr. Part No. 401A Mouser Part No 567-401-A	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO3, 120.7x38.1x31.8mm, (1) TO3 Hole Mount Pattern	Datasheet	6In Stock 112Expected 22/02/2027	€14.19 €13.24 €12.36 €11.74 View €11.44 €11.13 €10.52 €10.32	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO-3 Case, 120.7x38.1x31.8mm, 6.9mm Dia. Mount Hole 401F Wakefield Thermal 1: €17.50 25In Stock	Mfr. Part No. 401F Mouser Part No 567-401F	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO-3 Case, 120.7x38.1x31.8mm, 6.9mm Dia. Mount Hole	Datasheet	25In Stock	€17.50 €15.64 €14.90 €14.28 View €13.75 €13.10 €12.69	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x76.2x31.8mm 403K Wakefield Thermal 1: €20.09 44In Stock	Mfr. Part No. 403K Mouser Part No 567-403K	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x76.2x31.8mm	Datasheet	44In Stock	€20.09 €17.24 €16.61 €16.26 View €15.36 €14.97 €14.43	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles and Diodes, 120.7x76.2x47.6mm 413K Wakefield Thermal 1: €19.54 48In Stock	Mfr. Part No. 413K Mouser Part No 567-413K	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles and Diodes, 120.7x76.2x47.6mm	Datasheet	48In Stock	€19.54 €17.84 €17.31 €16.51 View €16.40 €16.14	Min.: 1 Mult.: 1
Heat Sinks Natural Convection Heat Sink for Metal-Case Semis for TO3, 25.4mm H 641A Wakefield Thermal 1: €12.87 85In Stock	Mfr. Part No. 641A Mouser Part No 567-641-A	Wakefield Thermal	Heat Sinks Natural Convection Heat Sink for Metal-Case Semis for TO3, 25.4mm H	Datasheet	85In Stock	€12.87 €11.47 €10.82 €10.42 View €10.04 €9.62 €9.30 €8.96	Min.: 1 Mult.: 1
Heat Sinks Natural Convection Heat Sink for Metal-Case Semis, No Hole Pattern, 25.4mm H 641K Wakefield Thermal 1: €13.96 6In Stock 120Expected 22/02/2027	Mfr. Part No. 641K Mouser Part No 567-641-K	Wakefield Thermal	Heat Sinks Natural Convection Heat Sink for Metal-Case Semis, No Hole Pattern, 25.4mm H	Datasheet	6In Stock 120Expected 22/02/2027	€13.96 €12.36 €11.66 €11.01 View €10.49 €9.92 €9.66	Min.: 1 Mult.: 1
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 25.4mm Height 680-10A Wakefield Thermal 1: €16.33 83In Stock	Mfr. Part No. 680-10A Mouser Part No 567-680-10A	Wakefield Thermal	Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 25.4mm Height	Datasheet	83In Stock	€16.33 €15.77 €12.70 €12.49 View €10.70 €10.47	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS09 Apex Microtechnology 1: €11.84 250Expected 24/12/2026	Mfr. Part No. HS09 Mouser Part No 137-HS09	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	250Expected 24/12/2026	€11.84 €10.95 €10.30 €9.67 View €9.28 €8.84 €8.51 €8.29	Min.: 1 Mult.: 1
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 12.7mm Height 680-5A Wakefield Thermal 1: €23.88 243Expected 21/12/2026	Mfr. Part No. 680-5A Mouser Part No 567-680-5A	Wakefield Thermal	Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 12.7mm Height	Datasheet	243Expected 21/12/2026	€23.88 €22.59 €21.65 €20.66 €18.33	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x38.1x31.8mm 401K Wakefield Thermal 1: €15.24 112Expected 16/11/2026	Mfr. Part No. 401K Mouser Part No 567-401-K	Wakefield Thermal	Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x38.1x31.8mm		112Expected 16/11/2026	€15.24 €13.51 €12.87 €12.33 View €11.87 €11.31 €10.52 €10.29	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS03 Apex Microtechnology 1: €131.40 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. HS03 Mouser Part No 137-HS03	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	Non-Stocked Lead-Time 16 Weeks	€131.40 €118.84 €111.26 €107.14	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS04 Apex Microtechnology 1: €82.69 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. HS04 Mouser Part No 137-HS04	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	Non-Stocked Lead-Time 16 Weeks	€82.69 €75.28 €70.26 €67.75 €65.24	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS05 Apex Microtechnology 1: €65.06 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. HS05 Mouser Part No 137-HS05	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	Non-Stocked Lead-Time 16 Weeks	€65.06 €58.94 €55.01 €53.04 €51.08	Min.: 1 Mult.: 1
Heat Sinks Hat Section Heat Sink for TO-3, Low Profile, Horizontal, 7 Degree C/W, Black 506003B00000G Aavid 1: €0.937 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. 506003B00000G Mouser Part No 532-506003B00000G	Aavid	Heat Sinks Hat Section Heat Sink for TO-3, Low Profile, Horizontal, 7 Degree C/W, Black	Datasheet	Non-Stocked Lead-Time 4 Weeks	€0.937 €0.826 €0.804 €0.782 View €0.739 €0.697 €0.672 €0.647 €0.594	Min.: 1 Mult.: 1
Heat Sinks Channel Style Heat Sink for TO-3, Base Only 520329B00000G Aavid 25,000: €0.569 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. 520329B00000G Mouser Part No 532-520329B00000G	Aavid	Heat Sinks Channel Style Heat Sink for TO-3, Base Only	Datasheet	Non-Stocked Lead-Time 8 Weeks	€0.569	Min.: 25,000 Mult.: 500
Thermal Interface Products ulTIMiFlux Dielectric Phase Change Thermal Material, TO-3 Pad, 4 Pin CD-02-05-3-4 Wakefield Thermal 1,000: €1.59 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. CD-02-05-3-4 Mouser Part No 567-CD-02-05-3-4	Wakefield Thermal	Thermal Interface Products ulTIMiFlux Dielectric Phase Change Thermal Material, TO-3 Pad, 4 Pin Learn More about Wakefield Thermal wakefield vette ultimiflux thermal materials	Datasheet	Non-Stocked Lead-Time 8 Weeks	€1.59 €1.46	Min.: 1,000 Mult.: 500
Thermal Interface Products Insulator 110500F00000G Aavid 10,000: €1.83 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. 110500F00000G Mouser Part No 532-110500F00G	Aavid	Thermal Interface Products Insulator		Non-Stocked Lead-Time 13 Weeks	€1.83	Min.: 10,000 Mult.: 2,000
Thermal Interface Products Conductive Hardware for TO3, 39.65mm L, 26.67mm W, 0.81mm Thick, Ceramic 4003-1G Aavid 100: €46.92 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. 4003-1G Mouser Part No 532-4003-1	Aavid	Thermal Interface Products Conductive Hardware for TO3, 39.65mm L, 26.67mm W, 0.81mm Thick, Ceramic	Datasheet	Non-Stocked Lead-Time 13 Weeks	€46.92 €46.89 Quote Quote	Min.: 100 Mult.: 50
Heat Sinks Mounting Kit with Thermalfilm Insulator for TO-3 4804 REV D-G Aavid 2,000: €5.13 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. 4804 REV D-G Mouser Part No 532-4804G	Aavid	Heat Sinks Mounting Kit with Thermalfilm Insulator for TO-3	Datasheet	Non-Stocked Lead-Time 13 Weeks	€5.13	Min.: 2,000 Mult.: 1,000
Heat Sinks Basket Heat Sink for TO-3, Straight Fin, Horizontal, 6 Degree C/W, 31.75mm 505403B00000G Aavid 4,000: €6.21 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. 505403B00000G Mouser Part No 532-505403B00000	Aavid	Heat Sinks Basket Heat Sink for TO-3, Straight Fin, Horizontal, 6 Degree C/W, 31.75mm	Datasheet	Non-Stocked Lead-Time 13 Weeks	€6.21	Min.: 4,000 Mult.: 500
Heat Sinks Square Basket Heat Sink for TO-3, Horizontal, Black, 45.21x45.21x11.94mm 552703B00000G Aavid 10,000: €2.06 Non-Stocked Lead-Time 32 Weeks	Mfr. Part No. 552703B00000G Mouser Part No 532-552703B00	Aavid	Heat Sinks Square Basket Heat Sink for TO-3, Horizontal, Black, 45.21x45.21x11.94mm	Datasheet	Non-Stocked Lead-Time 32 Weeks	€2.06	Min.: 10,000 Mult.: 5,000

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