CR Series Datasheet

Heatsink with universal cam-clip

Ohmite introduces the CR-series, configurable and patented (Pat. Pending) high performance, heatsinks with universal cam-clip for TO-247, TO-264, and packages. This proprietary heat sink provides tool and fixture free assembly operation with its Pat Pending cam clip system. The CR series heatsinks are comparable to some AAVID popular MAX-clip heat sinks in footprint and thermal performance. It is the ideal type of heat sink for high power density and small size electronic packaging with forced convection cooling.

Features

Minimum assembly cost and labor: Spring Clips make the mounting holes, fasteners, tools and fixtures obsolete in assembly operations & reduce costs.
Maximum Repeatability: Constant spring force over repeated assembly/disassembly
Maximum Reliability: Resilient spring action locks electronic component in place. Fewer parts in assembly and no fasteners and washers required. Prevent short circuit by eliminating metal particles generated from hardware or thread tapping
Design Flexibility: Maximum flexibility for dynamic device locations and power up grading. “Configureto-Fit” gives designers total freedom to configure heat sink needed to fit their dynamic design environments.

Series Specifications

Surface Area(in2/mm2):

20 / 12,785

Weight(oz/g):

1.0 / 28

Length(mm):

25

Thermal Resistance*(°C/W):

7.6

Surface Area(in2/mm2):

40 / 25,570

Weight(oz/g):

2.0 / 57

Length(mm):

50

Thermal Resistance*(°C/W):

5.3

Surface Area(in2/mm2):

60 / 38,355

Weight(oz/g):

3.0 / 85

Length(mm):

75

Thermal Resistance*(°C/W):

4.2

Surface Area(in2/mm2):

36.8 / 23,705

Weight(oz/g):

1.8 / 52

Length(mm):

25

Thermal Resistance*(°C/W):

4.7

Surface Area(in2/mm2):

73.5 / 47,4090

Weight(oz/g):

3.6 /103

Length(mm):

50

Thermal Resistance*(°C/W):

3.3

Surface Area(in2/mm2):

110 / 71,114

Weight(oz/g):

5.4 /155

Length(mm):

75

Thermal Resistance*(°C/W):

2.6

Surface Area(in2/mm2):

19.5 / 12,595

Weight(oz/g):

1.38 /39

Length(mm):

25

Thermal Resistance*(°C/W):

8.1

Surface Area(in2/mm2):

39.0 / 25,189

Weight(oz/g):

2.75 /78

Length(mm):

50

Thermal Resistance*(°C/W):

5.7

Surface Area(in2/mm2):

58.5 / 37,784

Weight(oz/g):

4.12/117

Length(mm):

75

Thermal Resistance*(°C/W):

4.5

Surface Area(in2/mm2):

31.7 / 20,477

Weight(oz/g):

2.26/63.5

Length(mm):

25

Thermal Resistance*(°C/W):

5.4

Surface Area(in2/mm2):

63.5 / 40,954

Weight(oz/g):

4.48/127

Length(mm):

50

Thermal Resistance*(°C/W):

3.8

Surface Area(in2/mm2):

95.2 / 61,431

Weight(oz/g):

6.74/191

Length(mm):

75

Thermal Resistance*(°C/W):

3.0

*Natural convection thermal resistance based on 70 °C Temp rise above ambient.

Characteristics

Aluminum Alloy 6063-T5 or Equivalent with either degreased or black anod-ized finish.

Music Wire, Per ASTM A228 with bright nickel plating

Cold-rolled Steel, Per ASTM A-366 with pure tin over copper strike. RoHS compliant.

(Optional) Sil-Pad 900-S, K6 800-S and K10

Thermal Performance

Two TO-247 heat sources uniformly spaced on the heat Sink,
L= 1.97” [50mm] and total of 10W Power Dissipation

Dimensions

CR101

CR201

CR301

CR401

Clip

Ordering Information

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CR Series Datasheet

Heatsink with universal cam-clip

Features

Series Specifications

Characteristics

Thermal Performance

Dimensions

CR101

CR201

CR301

CR401

Clip

Ordering Information

_Let us help find your solution

Contact Our Team of Experts Today

ISO 9001:2015 Certified

AS9100D Certified

IATF 16949 Certified

RoHS Compliant

REACH Compliant