# \#ipc
**URL:** https://sierraconnect.protoexpress.com/tag/ipc/14.md
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## [Inspection and clearance of a repaired PCBA per IPC7721](https://sierraconnect.protoexpress.com/t/inspection-and-clearance-of-a-repaired-pcba-per-ipc7721/4078)
**Author:** [@utkarsh.bsc.ngp](https://sierraconnect.protoexpress.com/u/utkarsh.bsc.ngp)\
**Replies:** 1\
**Last updated:** [May 26, 2026, 4:49pm UTC](https://sierraconnect.protoexpress.com/t/inspection-and-clearance-of-a-repaired-pcba-per-ipc7721/4078 "2026-05-26T16:49:57Z")
Hi, Repaired a PCBA without having IPC 7721 certification for the operator performing the rework. Drawing calls the operator to be certified to IPC 7721. Fir this deviation, what is the possible solution to accept the…
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## [Webinar: Key IPC Standards Every PCB Designer Should Know](https://sierraconnect.protoexpress.com/t/webinar-key-ipc-standards-every-pcb-designer-should-know/3933)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 1\
**Last updated:** [April 17, 2026, 11:27pm UTC](https://sierraconnect.protoexpress.com/t/webinar-key-ipc-standards-every-pcb-designer-should-know/3933 "2026-04-17T23:27:04Z")
Thanks for your interest in our IPC standards webinar! Missed the webinar? Click the link below to watch the recording and get the slides.
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## [How to Choose PCB Laminates Based on IPC Standards](https://sierraconnect.protoexpress.com/t/how-to-choose-pcb-laminates-based-on-ipc-standards/3571)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 0\
**Last updated:** [September 18, 2025, 3:09pm UTC](https://sierraconnect.protoexpress.com/t/how-to-choose-pcb-laminates-based-on-ipc-standards/3571 "2025-09-18T15:09:10Z")
Originally published at: https://www.protoexpress.com/blog/how-to-choose-pcb-laminates-based-on-ipc-standards/ Following IPC standards for PCB laminates makes it easier to choose dielectric materials that fit the spe…
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## [Ask Me Anything about IPC Class 3](https://sierraconnect.protoexpress.com/t/ask-me-anything-about-ipc-class-3/1693)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 20\
**Last updated:** [July 31, 2024, 10:50pm UTC](https://sierraconnect.protoexpress.com/t/ask-me-anything-about-ipc-class-3/1693 "2024-07-31T22:50:01Z")
Welcome to the thread for our next Ask Me Anything about IPC Class 3/ES. Ask us questions on: Design requirements Manufacturing acceptability Inspection and testing standards And much more! :speech\_balloon: Question s…
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## [IPC Class 2 VS Class 3: The Different Design Rules](https://sierraconnect.protoexpress.com/t/ipc-class-2-vs-class-3-the-different-design-rules/156)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 4\
**Last updated:** [June 28, 2024, 9:54pm UTC](https://sierraconnect.protoexpress.com/t/ipc-class-2-vs-class-3-the-different-design-rules/156 "2024-06-28T21:54:04Z")
Originally published at: https://www.protoexpress.com/blog/ipc-class-2-vs-class-3-different-design-rules/ As circuit board manufacturers, designers often ask us about the difference between IPC Class 2 and Class 3. C…
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## [IPC J-STD-001 Standard Soldering Requirements](https://sierraconnect.protoexpress.com/t/ipc-j-std-001-standard-soldering-requirements/157)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 1\
**Last updated:** [June 12, 2024, 5:49pm UTC](https://sierraconnect.protoexpress.com/t/ipc-j-std-001-standard-soldering-requirements/157 "2024-06-12T17:49:39Z")
Originally published at: https://www.protoexpress.com/blog/ipc-j-std-001-standard-soldering-requirements/ J-STD-001 is a standard issued by IPC for soldered electrical and electronic assemblies. The standard specifie…
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## [Ask Me Anything with IPC-2581](https://sierraconnect.protoexpress.com/t/ask-me-anything-with-ipc-2581/850)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 38\
**Last updated:** [February 8, 2024, 4:50am UTC](https://sierraconnect.protoexpress.com/t/ask-me-anything-with-ipc-2581/850 "2024-02-08T04:50:51Z")
Have a question about IPC-2581? Hemant Shah and key IPC-2581 Consortium members will answer on Feb 7th!
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## [MedTech PCB Design Considerations with IPC and UL Standards](https://sierraconnect.protoexpress.com/t/medtech-pcb-design-considerations-with-ipc-and-ul-standards/167)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Replies:** 0\
**Last updated:** [September 28, 2023, 6:43pm UTC](https://sierraconnect.protoexpress.com/t/medtech-pcb-design-considerations-with-ipc-and-ul-standards/167 "2023-09-28T18:43:12Z")
Originally published at: https://www.protoexpress.com/blog/medtech-pcb-design-considerations-with-ipc-and-ul-standards/ Medical science is highly reliant on electronic devices for diagnostics and treatment. Medtech P…