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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: £2.55
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

£2.55

£2.26

£2.16

£2.05

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Min.: 1
Mult.: 1

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

8909NBG
Aavid
1: £0.248
4,611In Stock

Mfr. Part No.
8909NBG

Mouser Part No
532-8909NBG

Aavid

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

Datasheet

4,611In Stock

£0.248

£0.228

£0.226

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: £12.15
13In 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

13In Stock

£12.15

£11.13

£10.59

£10.07

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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: £12.57
23In Stock
112Expected 28/10/2026

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

23In Stock

112Expected 28/10/2026

£12.57

£11.13

£10.60

£10.15

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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: £15.16
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

£15.16

£13.65

£13.01

£12.47

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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: £16.73
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

£16.73

£15.65

£15.07

£14.11

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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: £17.06
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

£17.06

£15.32

£14.70

£13.30

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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: £3.96
2In Stock
500Expected 24/09/2026

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 24/09/2026

£3.96

£3.83

£3.77

£3.54

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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: £11.14
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

£11.14

£10.01

£9.44

£9.10

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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: £10.90
40In 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

40In Stock

£10.90

£10.16

£9.52

£8.70

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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: £7.27
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

£7.27

£7.00

£6.62

£6.22

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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: £7.59
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

£7.59

£6.95

£6.56

£6.39

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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: £20.50
67Expected 04/09/2026

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 04/09/2026

£20.50

£18.60

£17.65

£17.17

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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: £15.29
19Expected 09/11/2026

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

19Expected 09/11/2026

£15.29

£14.56

£14.55

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS03
Apex Microtechnology
1: £65.00
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

£65.00

£59.18

£55.23

£53.26

View

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS04
Apex Microtechnology
1: £121.70
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

£121.70

£107.67

£102.55

£98.95

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS05
Apex Microtechnology
1: £97.17
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

£97.17

£90.29

£84.25

£81.25

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Min.: 1
Mult.: 1

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

HS11
Apex Microtechnology
1: £301.85
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

£301.85

£278.13

£258.26

Min.: 1
Mult.: 1

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

506003B00000G
Aavid
1: £0.818
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

£0.818

£0.721

£0.702

£0.683

View

Min.: 1
Mult.: 1

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

520329B00000G
Aavid
25,000: £0.497
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

£0.497

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: £1.24
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

£1.24

£1.07

Min.: 1,000
Mult.: 500

Thermal Interface Products Insulator

110500F00000G
Aavid
10,000: £1.60
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

£1.60

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: £40.58
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

£40.58

£40.55

Quote

Min.: 100
Mult.: 50

Heat Sinks Mounting Kit with Thermalfilm Insulator for TO-3

4804 REV D-G
Aavid
2,000: £4.48
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

£4.48

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: £4.37
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

£4.37

£3.90

£3.73

£3.57

View

Min.: 1
Mult.: 1

TO-3 Thermal Management

Types of Thermal Management

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