Technology blog

It is R of sales technology.

This time, we would like to introduce "We also accept such evaluation bonding".

This time, we asked a customer who said, "I want to evaluate a mini LED, and I got a chip, so I want to do a basic evaluation."

We received a consultation as to whether the LED chip could be bonded on a commercially available board as shown in the photo.


LED and evaluation board

LED and evaluation board


For ordinary SMT devices, lead wires can be soldered to the terminals for basic evaluation. However, it is quite difficult with bare chip LEDs.
The white square in the photo is the LED chip. The one in the picture is 1.7 mm square size, and they wanted to evaluate two types of LED chips, this size and 1.1 mm square.

The evaluation board is a general-purpose (commercially available) chip LED evaluation board, and it seems that 1.7 mm square can be mounted, but the 1.1 mm square chip does not seem to match the PAD on the chip and the PAD on the board.

For the time being, we will try to connect with the materials we have.
In the case of a 0.1mm size mini LED, the connection material is also a fairly severe selection, but since it is a 1mm class, there seem to be many options. First of all, we decided to try the silver paste and anisotropic solder paste that we have in stock.
Due to the small quantity, the work is manual.

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