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TO-3 Thermal Management

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) Filter the results in the table by unit price based on your quantity.	Qty.
Heat Sinks Space-Saving, Expandable Collar Heat Sink, TO3, Horizontal, 12.5 C/W, Black 579103B00000G Aavid 1: $3.54 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	$3.54 $3.24 $3.16 $2.98 View $2.80 $2.64 $2.53 $2.43 $2.23	Min.: 1 Mult.: 1
Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x76.2x11.7mm 623A Wakefield Thermal 1: $14.67 227In 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	227In Stock	$14.67 $13.67 $12.87 $12.35 View $11.80 $11.45 $11.08 $10.69	Min.: 1 Mult.: 1
Heat Sinks Basket Heat Sink for TO-3, Fold Back Fin, Horizontal, 5.5 Degree C/W, 33.27mm 569003B00000G Aavid 1: $5.32 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	$5.32 $5.30 $4.54 $4.27 View $4.01 $3.86	Min.: 1 Mult.: 1
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 8.4 Degree C/W, 25.4mm 501503B00000G Aavid 1: $2.71 4,754In 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	4,754In Stock	$2.71 $2.50 $2.43 $2.37 View $2.24 $2.11 $1.99 $1.86 $1.75	Min.: 1 Mult.: 1
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink, No Hole Pattern, 31.8mm Height 680-125K Wakefield Thermal 1: $22.40 127In 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	127In Stock	$22.40 $20.88 $19.65 $19.43 $16.96	Min.: 1 Mult.: 1
Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, 6.9mm dia. Hole Mounting Hole Pattern 421F Wakefield Thermal 1: $41.02 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	$41.02 $39.56 $39.20 $39.18	Min.: 1 Mult.: 1
Heat Sinks Heat Sink for TO3, 120.7x140.2x66.7mm, (1) TO3 Mounting Hole Pattern 423A Wakefield Thermal 1: $38.01 34In 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	34In Stock	$38.01 $34.19 $33.88 $30.16 View $28.34 $27.72	Min.: 1 Mult.: 1
Heat Sinks Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 7.2 Degree C/W, 12.7mm 500103B00000G Aavid 1: $4.72 2,831In 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	2,831In Stock	$4.72 $4.38 $4.27 $4.03 View $3.79 $3.54 $3.43 $3.26	Min.: 1 Mult.: 1
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 25.4mm Height 680-10A Wakefield Thermal 1: $20.11 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	$20.11 $18.75 $16.81 $14.27 View $13.79 $13.72 Quote	Min.: 1 Mult.: 1
Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis for TO-3, 120.6x38.1x11.7mm 621A Wakefield Thermal 1: $7.21 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	Datasheet	301In Stock	$7.21 $6.84 $6.66 $6.28 View $5.92 $5.54 $5.34 $4.99 $4.98	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO3, V Hole Pattern, 120.7mm 401V Wakefield Thermal 1: $13.59 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	$13.59 $13.57	Min.: 1 Mult.: 1
Heat Sinks Highest Efficiency/Lowest Unit Cost Heat Sink for TO-3, 33.3mm Height 690-3B Wakefield Thermal 1: $4.24 2,034In 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	2,034In Stock	$4.24 $3.98 $3.69 $3.36 View $3.20 $2.39	Min.: 1 Mult.: 1
Heat Sinks Double-Surface Heat Sink for TO-3 Case, 120.7x76.2x31.8mm, 6.9mm Dia. Mount Hole 403F Wakefield Thermal 1: $27.42 90In 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	90In Stock	$27.42 $24.30 $22.94	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS01 Apex Microtechnology 1: $34.33 256In Stock 666Expected 16/11/2026	Mfr. Part No. HS01 Mouser Part No 137-HS01	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	256In Stock 666Expected 16/11/2026	$34.33 $32.42 $30.52 $28.61 View $26.70 $25.30 $24.53 Quote	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS02 Apex Microtechnology 1: $40.62 311In Stock 276Expected 16/11/2026	Mfr. Part No. HS02 Mouser Part No 137-HS02	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	311In Stock 276Expected 16/11/2026	$40.62 $36.84 $34.54 $32.99 View $31.80 $30.29 $29.62 Quote	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS13 Apex Microtechnology 1: $165.97 43In Stock	Mfr. Part No. HS13 Mouser Part No 137-HS13	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	43In Stock	$165.97 $154.21 $147.32 $138.77 View $133.67 Quote	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03 HS14 Apex Microtechnology 1: $104.72 29In Stock	Mfr. Part No. HS14 Mouser Part No 137-HS14	Apex Microtechnology	Heat Sinks Heatsink, T03	Datasheet	29In Stock	$104.72 $94.87 $88.54 $85.38 View $82.24 Quote	Min.: 1 Mult.: 1
Heat Sinks BGA Heat Sink, High Performance, Stamped, No TIM, TO-3, 45.21x45.21x30.99mm ATS-PCBT1088 Advanced Thermal Solutions 1: $6.38 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	$6.38 $5.71 $5.44 $5.25 View $5.05 $4.76 $4.57 $4.45 $4.38	Min.: 1 Mult.: 1
Heat Sinks Heatsink, T03, PDIP, Pwr Pkg, H2O-cooled HS11 Apex Microtechnology 1: $546.79 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	$546.79 $503.81 $467.83	Min.: 1 Mult.: 1
Heat Sinks Hat Section Heat Sink for TO-3, Horizontal, Black Anodized, 50.8x44.45x9.52mm 506007B00000G Aavid 1: $2.67 5,022In 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	5,022In Stock	$2.67 $2.42 $2.34 $2.26 View $2.24 $2.07	Min.: 1 Mult.: 1
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 12 Degree C/W, 12.7mm 501303B00000G Aavid 1: $2.37 6,993In 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	6,993In Stock	$2.37 $2.30 $2.19 $1.78 View $1.77 $1.48	Min.: 1 Mult.: 1
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 10 Degree C/W, 19.05mm 501403B00000G Aavid 1: $4.27 1,236In 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	1,236In Stock	$4.27 $3.78 $3.71 $3.60 View $3.45 $3.29 $2.56	Min.: 1 Mult.: 1
Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.4 Degree C/W, 25mm PF527G Aavid 1: $22.93 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	$22.93 $21.38 $20.28 $19.38 View $19.37 $17.37 Quote	Min.: 1 Mult.: 1
Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 31.8mm Height 680-125A Wakefield Thermal 1: $23.62 210In 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	210In Stock 750Expected 11/12/2026	$23.62 $22.79 $20.11 $19.00 $16.42	Min.: 1 Mult.: 1
Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, (1) TO3 Mounting Hole Pattern 421A Wakefield Thermal 1: $35.65 67In 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	67In Stock	$35.65 $33.47 $30.49 $28.27 View $27.16 $25.95 $25.72 Quote	Min.: 1 Mult.: 1

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