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TO-3 Thermal Management

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Part #

Heat Sinks Diamond Shaped, Basket Heat Sink for TO-3, Horizontal, 7.8 Degree C/W, 31.75mm

501603B00000G
Aavid
1: $2.78
980In 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

980In Stock

$2.78

$2.56

$2.49

$2.43

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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: $22.56
23In Stock
112Expected 6/10/2026

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 6/10/2026

$22.56

$21.13

$18.64

$16.07

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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: $24.01
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

$24.01

$21.61

$20.59

$19.72

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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: $26.48
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

$26.48

$24.77

$23.85

$22.32

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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: $26.99
70In 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

70In Stock

$26.99

$23.96

$23.27

$21.50

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: $7.42
2In Stock
500Expected 24/9/2026

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 24/9/2026

$7.42

$5.82

$5.75

$5.74

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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: $16.49
45In 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

45In Stock

$16.49

$15.16

$13.75

$13.16

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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: $12.34
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

$12.34

$12.25

$11.52

$11.08

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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: $14.58
2,582On 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

2,582On Order

$14.58

$13.34

$12.64

$12.16

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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: $6.82
1,498On Order

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

1,498On Order

$6.82

$6.21

$5.20

$4.93

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Min.: 1
Mult.: 1

Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink for TO-3, 31.8mm Height

680-125A
Wakefield Thermal
1: $22.88
55In Stock
432On Order

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

55In Stock

432On Order

$22.88

$21.32

$20.07

$18.82

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Min.: 1
Mult.: 1

Heat Sinks Maximum Efficiency, Omnidirectional Heat Sink, No Hole Pattern, 31.8mm Height

680-125K
Wakefield Thermal
1: $23.78
238Expected 15/7/2026

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

238Expected 15/7/2026

$23.78

$23.77

$23.66

$23.60

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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: $32.44
67Expected 4/9/2026

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 4/9/2026

$32.44

$29.44

$27.94

$27.17

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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: $28.06
90Expected 10/7/2026

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

90Expected 10/7/2026

$28.06

$23.84

$22.21

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS03
Apex Microtechnology
1: $120.35
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

$120.35

$109.57

$102.26

$98.61

View

Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS04
Apex Microtechnology
1: $225.32
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

$225.32

$199.34

$189.86

$183.04

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Min.: 1
Mult.: 1

Heat Sinks Heatsink, T03

HS05
Apex Microtechnology
1: $179.91
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

$179.91

$167.15

$155.99

$150.43

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Min.: 1
Mult.: 1

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

HS11
Apex Microtechnology
1: $558.85
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

$558.85

$514.93

$478.15

Min.: 1
Mult.: 1

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

506003B00000G
Aavid
1: $1.52
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

$1.52

$1.33

$1.30

$1.26

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Min.: 1
Mult.: 1

Thermal Interface Products ulTIMiFlux Dielectric Phase Change Thermal Material, TO-3 Pad, 4 Pin

CD-02-05-3-4
Wakefield Thermal
1,000: $1.96
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

$1.96

$1.65

Min.: 1,000
Mult.: 500

Thermal Interface Products Insulator

110500F00000G
Aavid
10,000: $3.06
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

$3.06

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: $75.13
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

$75.13

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Min.: 100
Mult.: 50

Heat Sinks Mounting Kit with Thermalfilm Insulator for TO-3

4804 REV D-G
Aavid
2,000: $8.30
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

$8.30

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: $10.98
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

$10.98

$10.08

$9.72

$9.42

View

Min.: 1
Mult.: 1

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

520329B00000G
Aavid
1: $4.92
Non-Stocked Lead-Time 32 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 32 Weeks

$4.92

$4.57

$4.45

$4.20

View

Min.: 1
Mult.: 1

TO-3 Thermal Management

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