Questions tagged [wirebonding]

The tag has no usage guidance.

0
votes
0answers
19 views

Bonding tests on High voltage systems

I am wondering what kind of tests are performed on bonding schemes in high voltage systems. I am specifically interested in underground systems. What are these tests looking for? Do different bonding ...
0
votes
1answer
58 views

Lightning protection system [closed]

When I have a lightning protection system installed on a building roof top , what is the best way to bond the electrical equipment on the roof? Is it ok to directly bond it to the down counductor of ...
5
votes
0answers
97 views

Contact a very small area (impedance matched)

In my current project, I want to apply a voltage to a capacitor (top electrode on a thin film heterostructure) very rapidly. Since capacitors have their own charging rate \$(\tau = R \cdot t = R \cdot ...
0
votes
0answers
41 views

RF signal on wirebonds

I am curious to know how RF signal is transmitted through wirebonds. I thought that in microwave transmission lines, the energy was stored in electric and magnetic fields inside the dielectric ...
1
vote
1answer
111 views

How do I attach my MEMS device to a PCB? I do not have access to a die bonding machine

I want to connect the MEMS device electrically to a PCB through Au wire bonds. I have designed the PCB for the MEMS device to mount on. I would like to know if there is any way I can align and bond my ...
15
votes
3answers
3k views

Why is gold preferred over silver for bond wire?

Silver is a better conductor than gold and in Integrated Circuit package where exposure to air should not be a concern Gold is used. Any particular advantage of using Gold over Silver?
0
votes
2answers
61 views

Is thermal relief needed for wire-bond process?

I'm familiar with designing boards for SMT, but less familiar with the wire-bonding process. When designing PCB pads that will be attached to using a wire bonder, are the pads supposed to have ...
0
votes
1answer
79 views

Are there hand tools for applying electrically conductive adhesive and stringing wire for manual wire bonding?

It would be handy to be able to place small jumpers on PCB without soldering. Are there specialty hand tools for applying electrically conductive adhesive and stringing fine wire, sort of like a ...
0
votes
1answer
274 views

Safely removing bonding glue from an IC in order to identify it?

I have an IC, that has 5 visible bonds. The entire IC is covered with some sort of semi transparent bonding glue. I want to identify the IC and were thinking to remove the glue somehow. What chemical ...
1
vote
1answer
51 views

Copper bond wires on a Component

We must move from WM8731SEFL to WM8731CSEFL, as the original part is obsolete. I am advised the only difference is the "introduction of copper bond wires". Order Code WM8731LSEFL and WM8731LSELF/R ...
11
votes
3answers
1k views

Why does this EPROM have comb-like structures around the wire bonding pads?

I took some pictures of a Microchip EPROM die from the late 80s / early 90s (I can't recall the exact part number). The wire bonding pads are surrounded by a comb-like structure. What is the purpose ...
5
votes
2answers
5k views

How thick a gold finish on a pcb for wire bonding?

As a partial reparation for my previous question today. Please allow this rather esoteric/ but on topic question. I was sending out a pcb that will have gold wire bonding pads. It was a option at our ...