Ohmite Supplier Page

M Series Heatsinks

Ohmite's multi-device heatsinks improve connection and reduces costs

Heatsinks in Ohmite’s patented M series are capable of retaining up to four TO-247 or TO-264 resistors or semiconductors in a single heatsink. The M series is secured by circuit board mounting, and the devices are held in place by a clever ASTM A228 spring clip, making mounting holes and fasteners unnecessary.

Constant spring force locks the components into place and ensures maximum repeatability even after constant assembly and disassembly. This method allows for device replacement or design changes without having to re-work the board.

Providing superior thermal efficiencies while reducing component and assembly costs, heatsinks in the M series are supplied as standard parts, measuring 55mm in length by 38.6mm high. Heatsinks in this series are available with a degreased or black anodized finish. Datasheet
M Series Heatsinks

Heat Sink Aluminum alloy 6063-T5 or equivalent with either degreased or black anodized finish
Solder Foot Cold-rolled steel, per ASTM A-366 with pure tin over copper strike
Spring Clip Music wire, per ASTM A228 with bright nickel plating
Insulator Sil-Pad 900-S, K6 800-S and K10

Digi-Key P/N Manufacturer P/N Description
MV-102-55E-ND MV-102-55E HEATSINK FOR TO-247 TO-264
MA-102-55E-ND MA-102-55E HEATSINK FOR TO-247 TO-264 BLK