Looking for solder training standards, manuals, kits, and more?

Visit soldertraining.com

ASK HELENA & LEO

Inspection Criteria for Unique Lead Geometry

Question: We are installing a component with a unique lead geometry. It is a PULSE PO429NL inductor. The lead is basically a 16ga wire wrapped around plastic feature. There are four – one on each corner. Since this lead feature is round and not flat which IPC-A-610 solder inspection criteria best fits?

Question: We are installing a component with a unique lead geometry. It is a PULSE PO429NL inductor. The lead is basically a 16ga wire wrapped around plastic feature. There are four – one on each corner. Since this lead feature is round and not flat which IPC-A-610 solder inspection criteria best fits?

Answer: Thank you for asking what is the correct section of the IPC-A-610 to be used to inspect these solder joints, since the component termination is basically a wire.

The section to use is 8.3.6, Round or Flattened (coined) Gull Wing Leads, and the dimension you are looking for is Dimension Q, Minimum Side Joint Height. The solder joint has G plus ½ of the thickness of the lead and this is illustrated in 8.3.6.8 on page 8-66.

Have a technical question?

Dealing with a process or standards issue and not sure where to turn? *Helena and Leo, our technical experts are here to help. Just fill out the form below and they will review and answer selected questions as soon as they can.
*Please Note: We may post your question on our site for educational purposes, so that others may learn in the process. All references, both personally, professional and relative to product details will be removed from the discussion.