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TO-3 Thermal Management

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Types of Thermal Management

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Part #

Heat Sinks Basket Heat Sink, TO3, Space-Saving, Horizontal, 13.4 Degree C/W, 19.05mm

575703B00000G
Aavid
1: $3.40
728In Stock

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

728In Stock

$3.40

$3.01

$2.87

$2.73

View

Min.: 1
Mult.: 1

Heat Sinks Snap-On Cover for TO-3, Nylon, Black

8909NBG
Aavid
1: $0.33
4,621In Stock

Mfr. Part No.
8909NBG

Mouser Part No
532-8909NBG

Aavid

Heat Sinks Snap-On Cover for TO-3, Nylon, Black

Datasheet

4,621In Stock

$0.33

$0.304

$0.301

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: $15.94
29In Stock

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

29In Stock

$15.94

$14.83

$13.97

$13.23

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Min.: 1
Mult.: 1

Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x38.1x31.8mm

401K
Wakefield Thermal
1: $16.75
23In Stock
112Expected 2026/10/28

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

23In Stock

112Expected 2026/10/28

$16.75

$14.83

$14.12

$13.53

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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: $20.20
27In 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

27In Stock

$20.20

$18.19

$17.33

$16.61

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Min.: 1
Mult.: 1

Heat Sinks Double-Surface Heat Sink for TO-3 Case Styles, 120.7x76.2x31.8mm

403K
Wakefield Thermal
1: $22.28
46In 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

46In Stock

$22.28

$20.85

$20.07

$18.79

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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: $22.73
68In 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

68In Stock

$22.73

$20.17

$19.58

$18.10

Min.: 1
Mult.: 1

Heat Sinks Low Profile Heat Sink for All Metal-Case Power Semis, No Hole, 120.6x38.1x11.7mm

621K
Wakefield Thermal
1: $6.25
2In Stock
500Expected 2026/09/24

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

2In Stock

500Expected 2026/09/24

$6.25

$5.11

$5.06

$5.05

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Min.: 1
Mult.: 1

Heat Sinks Natural Convection Heat Sink for Metal-Case Semis for TO3, 25.4mm H

641A
Wakefield Thermal
1: $14.84
86In 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

86In Stock

$14.84

$13.34

$12.57

$12.12

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Min.: 1
Mult.: 1

Heat Sinks Natural Convection Heat Sink for Metal-Case Semis, No Hole Pattern, 25.4mm H

641K
Wakefield Thermal
1: $14.51
43In Stock

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

43In Stock

$14.51

$13.54

$12.69

$11.60

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Min.: 1
Mult.: 1

Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 10.1 Degree C/W, 12.5mm

PF523G
Aavid
1: $9.69
156In Stock

Mfr. Part No.
PF523G

Mouser Part No
532-PF-523

Aavid

Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 10.1 Degree C/W, 12.5mm

Datasheet

156In Stock

$9.69

$9.33

$8.82

$8.29

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Min.: 1
Mult.: 1

Heat Sinks Square Basket Heat Sink for TO-3, Slanted Fin, Horizontal, 5 Degree C/W, 31.75mm

500403B00000G
Aavid
1: $10.11
2,570On Order

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

2,570On Order

$10.11

$9.26

$8.75

$8.51

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Min.: 1
Mult.: 1

Heat Sinks Heat Sink for TO3, 120.7x76.2x66.7mm, (1) TO3 Mounting Hole Pattern

421A
Wakefield Thermal
1: $27.31
67Expected 2026/09/04

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

67Expected 2026/09/04

$27.31

$24.78

$23.52

$22.88

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Min.: 1
Mult.: 1

Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 12.7mm Height

680-5A
Wakefield Thermal
1: $20.38
19Expected 2026/11/09

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

19Expected 2026/11/09

$20.38

$19.40

$19.39

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS03
Apex Microtechnology
1: $86.60
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

$86.60

$78.84

$73.58

$70.95

View

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS04
Apex Microtechnology
1: $162.13
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

$162.13

$143.43

$136.62

$131.83

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS05
Apex Microtechnology
1: $129.45
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

$129.45

$120.28

$112.24

$108.24

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Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03, PDIP, Pwr Pkg, H2O-cooled

HS11
Apex Microtechnology
1: $402.12
Non-Stocked Lead-Time 16 Weeks

Mfr. Part No.
HS11

Mouser Part No
137-HS11

Apex Microtechnology

Heat Sinks Heatsink, T03, PDIP, Pwr Pkg, H2O-cooled

Datasheet

Non-Stocked Lead-Time 16 Weeks

$402.12

$370.52

$344.05

Min.: 1
Mult.: 1

Heat Sinks Hat Section Heat Sink for TO-3, Low Profile, Horizontal, 7 Degree C/W, Black

506003B00000G
Aavid
1: $1.09
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

$1.09

$0.961

$0.935

$0.909

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Min.: 1
Mult.: 1

Heat Sinks Channel Style Heat Sink for TO-3, Base Only

520329B00000G
Aavid
25,000: $0.662
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

$0.662

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: $1.65
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

Datasheet

Non-Stocked Lead-Time 8 Weeks

$1.65

$1.42

Min.: 1,000
Mult.: 500

Thermal Interface Products Insulator

110500F00000G
Aavid
10,000: $2.13
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

$2.13

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: $54.06
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

$54.06

$54.02

Quote

Min.: 100
Mult.: 50

Heat Sinks Mounting Kit with Thermalfilm Insulator for TO-3

4804 REV D-G
Aavid
2,000: $5.97
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

$5.97

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
1: $5.83
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

$5.83

$5.20

$4.97

$4.76

View

Min.: 1
Mult.: 1

TO-3 Thermal Management

Types of Thermal Management

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