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Home » NEWEST Products » New by Manufacturer » Ohmite » Ohmite Heatsinks
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Home » Product Knowledge Center » Ohmite Heatsinks
Ohmite Manufacturing Company has been a leading provider of resistors for over 80 years and now introduces heatsinks for resistors and semiconductor devices in package sizes TO-126TO-263, TO-268, TO-220, TO-247, and more!

NEW! C Series Heatsinks
Ohmite introduces the C Series Heatsinks. This series offers high performance, low cost and is a compact heat sink with an integrated camming clip system.This powerful heat sink provides tool and fixture free assembly operation, largest surface areas and smallest space occupation. The Ohmite C Series Heatsinks are the ideal type of heat sink for high power density and small size (1U or 2U) electronic packaging with forced convection cooling, such as semiconductors and resistors.
Part #

Package Types Supported
Surface Area
(in 2 /mm 2 )
Description Weight
(oz/g)
Length
(mm)
C126-025-1VE  TO-126
 10.2/6,559 Degreased
0.45/12.7  25
C126-040-2VE  16.3/10,495  Degreased  0.72/20.3  40
C126-025-1AE  20.4/13,119  Black Anodized
 0.90/25.4  50
C126-040-2AE  30.6/21,655 Black Anodized
 1.35/38.1  75
C247-025-1VE TO-247
 11/7,312 Degreased
0.5/15 25
C247-025-1AE 11/7,312 Black Anodized
0.5/15 25
C247-050-2VE 23/14,858 Degreased 1.1/31 50
C247-050-2AE 23/14,858 Black Anonized
1.1/31 50
C247-075-3VE 34/21,655 Degreased 1.6/45 75
C247-075-3AE 34/21,655 Black Anondized
1.6/45 75
C220-025-1VE
TO-220
 11/7,312 Degreased 0.5/15 25
C220-025-1AE 11/7,312 Black Anodized
0.5/15 25
C220-050-2VE
23/14,858 Degreased 1.1/31 50
C220-050-2AE
23/14,858 Black Anodized
1.1/31 50
C220-075-3VE
34/21,655 Degreased 1.6/45 75
C220-075-3AE
34/21,655 Black Anodized
1.6/45 75
C264-030-1VE
TO-264
 13/8,774 Degreased 0.9/19 30
C264-030-1AE 13/8,774 Black Anodized
0.7/19 30
C264-058-2VE
25/16,963 Degreased 1.35/37 58
C264-058-2AE
25/16,963 Black Anodized
1.35/37 58
C264-085-3VE
37/24,861 Degreased 1.97/54 85
C264-085-3AE
37/24,861 Black Anodized
1.97/54 85

S Series LED Heatsinks
Ohmite S Series LED Heatsinks are low cost and easy assembly heat sinks for "Star" LED packages supplied by OSRAM and others. See OSRAM IR OSTAR LEDs . This simple heat sink can hold LED modules and can be mounted simply with some thread forming screws. They have two types of surface finish and can be used in either natural (free) or forced convection cooling applications.
Part#
Specs Height
(in/mm)
Thermal Resistance (ºC/W)
Free Convection / Forced Convection
SV-LED-113E Degreased 0.50 / 12.7
6.67 / 4.33
SA-LED-113E Black Anodized
0.50 / 12.7 5.33 / 4.33
SV-LED-125E Degreased 1.00 / 25.4
5.33 / 2.88
SA-LED-125E Black Anodized 1.00 / 25.4 4.27 / 2.88
SV-LED-151E Degreased 2.00 / 50.8
4.00 / 1.89
SA-LED-151E Black Anodized 2.00 / 50.8 3.20 / 1.89
SV-LED-176E Degreased 3.00 / 76.2
3.11 / 1.55
SA-LED-176E Black Anodized 3.00 / 76.2 2.49 / 1.55

D Series Heatsinks
Ohmite D Series Heatsinks provide an innovative solution for SMT compatible semiconductors and resistors. The unique design (Patent Pending) combines tin plated, solderable rods with an aluminum extruded heat sink body. These rods (or "rollers") are mated mechanically to the heatsink by forging to reduce the thermal resistance between the heatsink body and the solderable feet.
Part# Package Types Supported Specs Ohmite Resistor Series Supported
TO-263, TO-252 BLK ANODIZED TDH35
TO-263, TO-252 BLK ANODIZED
TO-268 BLK ANODIZED N/A
TO-268 BLK ANODIZED
TO-263, TO-252 DEGREASED
TO-263, TO-252 DEGREASED
TO-268 DEGREASED N/A
TO-268 DEGREASED
TO-263, TO-252
BLK ANODIZED

TO-263, TO-252
BLK ANODIZED
NEW!  DA-T268-301E
TO-268
BLK ANODIZED
N/A
TO-268
 BLK ANODIZED
NEW!  DV-T263-201E
 TO-263, TO-252
DEGREASED
NEW!  DV-T263-201E-TR
 TO-263, TO-252
DEGREASED
NEW!  DV-T268-301E
 TO-268
DEGREASED
N/A
NEW!  DV-T268-301E-TR
 TO-268
DEGREASED

E Series Heatsinks
Ohmite E Series Heatsinks features vertical through-hole PCB mounting with three 0.142 in. diameter mounting holes.Available in heights of 1.5", 2.0", and 2.5", the heatsinks are aluminum 6063-T5 or equivalent and solder feet are tin plated brass.
Part# Package Types Supported Specs Ohmite Resistor Series Supported
TO-220 BLK ANODIZED

TAH20
TBH25
TCH35
TK/TN

TO-220 BLK ANODIZED
TO-220 BLK ANODIZED
TO-220 DEGREASED
TO-220 DEGREASED
TO-220 DEGREASED

F and R Series Heatsinks
Ohmite F and R Series Heatsinks are vertical mountable with solderable pins and are composed of 6063-T5 aluminum.
Part# Package Types Supported Specs Ohmite Resistor Series Supported
TO-220 BLK ANODIZED

TAH20
TBH25
TCH35
TK/TN

TO-220 BLK ANODIZED
TO-220 BLK ANODIZED
TO-220 BLK ANODIZED
TO-220, TO- 218, TO-247 BLK ANODIZED

TAH20
TBH25
TCH35
TK/TN
TEH70
TEH100

TO-220, TO- 218, TO-247 BLK ANODIZED
TO-220, TO- 218, TO-247 BLK ANODIZED
TO-220, TO- 218, TO-247 BLK ANODIZED

R2 Series Heatsinks
Ohmite R2 Series Heatsinks attach either a TO-220, TO-247, or TO-264 package.
Part #
Surface Area
Description
Weight
Thermal Resistance
R2V-CT2-38E 21/13.579 Aluminum Alloy
5.9/26 9.8
R2A-CT2-38E 21/13.579
Aluminum Alloy 5.9/26 8.6
R2V-CT4-38E 21/13.579 Aluminum Alloy 6.4/29 9.8
R2A-CT4-38E 21/13.579 Aluminum Alloy 6.4/29 8.6
NEW! R2V-CT6-38E
21/13.579 Aluminum Alloy 6.4/29 9.8
NEW! R2A-CT6-38E
21/13.579 Aluminum Alloy 6.4/29 8.6

W Series Heatsinks
Ohmite W Series Heatsinks feature a unique design (patent pending) that combines a tin plated, solderable, integral spring clip with an extruded aluminum heat sink body for an all-in-one solution to through-hole mounting of TO-220, TO-247, or TO-264 packages. These self-aligning heat sinks feature solderable feet and an integrated clip with 13.2 (lbf) of force on the center of the device to enhance thermal performance.
Part# Package Types Supported Specs Ohmite Resistor Series Supported
TO-220 BLK ANODIZED TBH25 , TCH35 , TAH20 , TK/TN
TO-247 BLK ANODIZED TEH70 , TEH100
NEW! WA-T264-101E TO-264 BLK ANODIZED TFH85
TO-220 DEGREASED TBH25 , TCH35
TO-247 DEGREASED TBH25 , TCH35 , TAH20 , TK/TN
NEW! WV-T264-101E
TO-264 DEGREASED TFH85

M Series Heatsinks
Ohmite M Series Heatsinks are patented (Pat. No. 7,151,669), high performance, low cost, configurable, scalable and compact heat sinks with matrix clip system. These powerful heat sinks provide the easiest assembly, largest surface area and smallest footprint. It is the ideal type of heat sink for high power density and small size (1U or 2U) electronic packaging with forced convection cooling.
Part# Package Types Supported Specs Ohmite Resistor Series Supported
NEW! MA-101-27E
  TO-247, TO-264  Black Anodized
NEW! MV-101-27E
  TO-247, TO-264  Degreased
NEW! MA-301-27E
  TO-247, TO-264  Black Anodized
NEW! MV-301-27E
 TO-247, TO-264  Degreased
MA-302-55E
TO-247, TO-264 Black Anodized TEH70 , TEH100 , TFH85
MV-302-55E
TO-247, TO-264 Degreased
TO-247, TO-264 Black Anodized

TO-247, TO-264 Degreased







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