Soldering LDMOS to copper

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Reflow soldering LDMOS to copper spreader. Courtesy of Jim Klitzing W6PQL.
This is a copy of the original video from Jim's website: www.w6pql.com/
Fijación de transistor LDMOS a difusor de cobre mediante reflujo de SnPb cortesía de Jim Klitzing Q6PQL
Este video es copia del original que se encuentra en la página de Jim: www.w6pql.com/

Опубликовано:

4 окт 2024

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Комментарии : 13

@brownj2 3 месяца назад

I bolted mine down to my copper heat sink, no solder and it works fantastic. Going strong over 5 years.

@rossrogers2979 7 лет назад

Thank You for the Knowledge Jim. Good Stuff!!!

@KF8OD1 8 лет назад

Great video Jim!

@vincei4252 3 года назад

Thanks, Jim! Will be doing this in a few days! 73!

@Mark300win 6 лет назад

Thanks for sharing this info! Appreciated! Where did u get the heat sink and copper spreader from?

@chandlerdarius6380 3 года назад

instablaster.

@bob4analog 4 года назад

I've never seen this before. Is this better than using heat sink compound?

@caaarloteamswift 4 года назад

Much better. Just think of 400W of heat being dissipated through such a small footprint. Besides the thermal aspect, it provides much lower electrical impedance from source to ground.

@JesusRoseAgain 2 года назад

This would be great to use with Smd mosfets and thin copper plate.

@rodneydavis8110 Месяц назад

How deep is the slot in the copper? And what type of solder?

@dan_in_sd 12 часов назад

might be too late for a reply, but.... the channel is roughly 11mm wide and 0.010" deep. just enough to register the transistor. if you go too deep in the slot then the LDMOS gate and drain tabs well be too low for the PCB to slide under it. I did 0.010" and it turned out perfect. Solder: 60/40 0.031" (note this info is for MRFX1K80H or similar package )