All of our standard series heat sinks can be ordered with pre-applied thermal tape per each customer's requirements. There are some general guidelines for choosing the correct thermal tape and size.
For metal or ceramic packages, we offer Chomerics T412. This tape offers the highest thermal conductivity/lowest thermal impedance of any of the tapes we carry. It must not be used on plastic packages or the bond may eventually fail. Available in any size.
For plastic packages, we offer several varieties of thermal tape:
|Offers very good performance for plastic packages. We only carry this material in 35mm squares.|
|Chomerics T411 |
|Available in any size. Offers good performance for plastic packages. Relatively thick material conforms to surfaces that are not perfectly flat.|
|3M 8815 |
.015 " thickness
|Available in any size. Thick compliant material conforms to packages that may be concave or convex, improving the thermal performance and bond strength.|
For detail of each tape specification, please check Online Catalog - Thermal tape.
|T411||X||X||X||X||X||X||X||X||X||X||X||X||X||X||X||X||( 6"x12" )|
|BP105||X||X||X||X||X||X||X||X||X||X||X||X||X||X||X||X||( 6"x12" )|
Choose a piece of tape that is large enough to completely cover the contact area plus and additional 1.5mm in each direction. The extra material ensures that the tape will cover the package contact area if it the heat sink not perfectly centered. Additionally, if the package size is close to the size of the heat sink, leave about 1mm of space between the edge of the heat sink and the tape. For example, if the LPD40-15B is used on a 40mm package, the proper tape size should be 38mm square.
We have devised a intuitive system to quickly come up with a part number that can be immediately ordered.
Example 1 : LPD40-15B-T412-38
If an LPD40-15B were going to be used on a metal 35mm package, the correct tape choice would be a 38mm piece of T412. This specifies a standard LPD40-15B heat sink with a 38x38mm piece of Chomerics T412.
Once the heat sink/tape choice and part number are chosen, please contact us for a quote. Standard series heat sinks and tape are carried in stock. In most cases, samples and initial order quantities can be shipped within 1 day.
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