MPP Ribbon Tool: Slot Size to Ribbon Size
Fine Ribbon Bonding Wedge: A guide to help specify the correct feed slot size for a given ribbon size on MPP wedge bonding tools (IKB-066).
MPP Fine Ribbon Bonding Wedge: Please use this information as a guide to help determine and select the correct slot size for the fine ribbon wedge you require. You will need to know the size of the ribbon you are using and required bond foot length (BL).

Step 1:
Find which code relates to your ribbon width and thickness.
For example, 0.002” width and 0.0005” thickness gives you A1.
This gives you your slot size in your wedge.

Step 2:
Once you have the code, cross reference it to the wedge model table.
You will need to have an idea of what bond length is necessary for the application.
Using the example from above – A1 – you can see there are two choices to select.
A120 – 0.002” x 0.0005” Slot Size – 0.020” BL
A125 – 0.002” x 0.0005” Slot Size – 0.025” BL
Step 3:
Once you have your four digit code for the ribbon (A120 for example), the specification of the wedge tool then has to be defined.
This includes features such as the Wire Feed Angle, Shank Style, Surface Finish, Wedge Length, etc.
These can all be found in the chart above and within wedge catalogues.
Below are some dimension drawings which explain in more detail what the key features of a wedge are.

View the range of “Bonding Wedge Tools“.
View the range of “Coining Wire Bonding Materials“.
Author
Date
Version
Author
Adam Marshall
Date
15 May 2020
Version
IKB066 Rev. 1
Download
Author Biography
Adam Marshall is a Senior Technical Support Engineer at Inseto Ltd with over 14 years of experience in the semiconductor industry, including 10 years specialising in assembly processes and related equipment. He supports customers across the microelectronics and semiconductor sectors who rely on precision equipment to maintain reliable and repeatable results in production and research environments.
Known for a calm and structured approach, Adam works closely with customers, suppliers and internal teams to deliver clear technical advice and dependable support when it matters.

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