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wakefield-vette.com

Contact us: (603) 635-2800

Wakefield-Vette's

Mountain Series Heat Sinks are high performance, low cost, configurable, scalable and

compact with a matrix clip system for TO220, TO-247, TO-264 and other standard packages. This type

powerful heat sink provides easiest assembly, largest surface areas, smallest space occupation and all-in-one

solution. The power dissipations can be easily increased simply by extending the fin height on each side of the

heat sink, while keeping the heat sink height and PCB layout the same. It is the ideal type of heat sink for high

power density and small size (1U or 2U) electronic packaging with forced convention cooling.

Part Package Attachment

Height Off Base Thermal Resistance

Material

Number Description Type Cooled Method Length Width (Height of Fin) @ Forced Air Flow Material Finish

MTN-264-55 Heat Sink w/ Two Top Mount TO-247 and Clip and PC Pin

2.17"

1.740"

1.56"

3.7°C/W @ 18 Watts Aluminum

Black

Clips for TO-247

TO-264

(55.11mm) (44.3mm)

(39.5mm)

Anodized

TO-264

• Minimum assembly cost and labor - Spring Clips make

the mounting holes and fasteners obsolete in assembly

operations and reduce costs.

• Maximum Thermal Transfer - Maximum surface area

per unit volume, efficient cooling fins & consistent

mounting force reduces thermal resistance.

FEATURES AND BENEFITS

• 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.

THERMAL RESISTANCE

MECHANICAL DIMENSIONS

BOARD LEVEL

HEAT SINKS

BOARD LEVEL

HEAT SINKS

MOUNTAIN SERIES HEAT SINKS FOR TO-264, TO-247 DEVICES

omniKLIP™ SERIES HEAT SINK W/ CLIP(s) FOR TO-DEVICES

The Wakefield- Vette

omniKlip Heat Sink Series are a configurable and patented (Pat. Pending) high

performance, low cost and compact solutions for TO-220, TO-247 and TO-264 , or similar packages. This

powerful heat sink provides tool and fixture free assembly operation, largest surface areas and smallest

space occupation. It is the ideal type of heat sink for high power density and small size (1U or 2U) electronic

packaging with forced convention cooling.

• 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. “Configure-to-Fit” gives

designers total freedom to configure heat sink needed

to fit their dynamic design environments.

FEATURES AND BENEFITS

• Heat Sink: Aluminum Alloy 6063-T5 or Equivalent with

black anodized finish.

• Spring Clip: Music Wire, Per ASTM A228 with bright

nickel plating

• Solder Foot: Cold-rolled Steel, Per ASTM A-366 with

pure tin over copper strike. RoHS compliant.

SPECIFICATIONS

WkV Part Related Package Height Off Base

Number

Description

Clip

Cooled

Length

Width

(Height of Fin)

OMNI-UNI-18-25

OmniKlip Heat Sink,

OMNI-UC TO-247, TO-264

0.984"

1.500"

0.710"

18mm wide, 25mm long,

(25.00mm) (38.10mm)

(18.03mm)

black anodized for TO-247 & TO-264

OMNI-UNI-18-50

OmniKlip Heat Sink ,

OMNI-UC TO-247, TO-264

1.969"

1.500"

0.710"

18mm wide, 50mm long,

(50.00mm) (38.10mm)

(18.03mm)

black anodized for TO-247 & TO-264

OMNI-UNI-18-75

OmniKlip Heat Sink,

OMNI-UC TO-247, TO-264

2.95"

1.500"

0.710"

18mm wide, 75mm long,

(75.00mm) (38.10mm)

(18.03mm)

black anodized for TO-247 &TO 264

OMNI-220-18-25-1C

OmniKlip Heat Sink w/1 clip,

TO-220

0.984"

1.500"

0.710"

18mm wide, 25mm long,

(25.00mm) (38.10mm)

(18.03mm)

black anodized for TO-220

OMNI-220-18-50-2C

OmniKlip Heat Sink w/2 clips,

TO-220

1.969"

1.500"

0.710"

18mm wide, 50mm long,

(50.00mm) (38.10mm)

(18.03mm)

black anodized for TO-220

OMNI-220-18-75-3C

OmniKlip Heat Sink w/3 clips,

TO-220

2.95"

1.500"

0.710"

18mm wide, 75mm long,

(75.00mm) (38.10mm)

(18.03mm)

black anodized for TO-220

THERMAL PERFORMANCE (OMNI-UNI-18)

MECHANICAL DIMENSIONS

TWO TO-247 DEVICES WITH SIL-PAD 900s

L = 500mm[2.0"]

MTN-264-55

OMNI-CLIP-18-L SERIES

HEAT SINKS