How thick is the through-plating of a through hole pad?
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Luks 2 months ago
Hello, I would like to implement a press-fit contact. The manufacturer describes the requirements of the pad very accurate, as you see below. ![Pad_AnnularRing_Copper.jpg](//image.easyeda.com/pullimage/ZFNj1gNtLSEXEKOLYgv8t48GCImzfPN4s5FPGjES.jpeg) I want my design to suit the description but I don't know where to set the through-plating thickness. ![image](https://www.multi-circuit-boards.eu/fileadmin/img/03_Design-Hilfe/restring/pcb_annular-ring_standard.gif) Thanks in advance and best regards, Lukas
Comments
andyfierman 2 months ago
@Luks, Please see: [https://jlcpcb.com/capabilities/Capabilities](https://jlcpcb.com/capabilities/Capabilities) and repost this in the JLCPCB section of the forum. Note also this post: [https://easyeda.com/forum/topic/Hole-size-tolerance-for-Holtites-868f5c9d3eba41d79065fef7479a6248](https://easyeda.com/forum/topic/Hole-size-tolerance-for-Holtites-868f5c9d3eba41d79065fef7479a6248) Thanks.
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Luks 2 months ago
@andyfierman Thanks you for the fast response, Andy. But I can't find an answer to my question under the website from JLC and the post of Fred Wright also does not help. I spent a lot of time in the forum today and didn't find an answer, thats why I created this post. I would be grateful if you could give me further information.
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andyfierman 2 months ago
@Luks, Your question is answered because part of the Wuerth Elektronic ICS - Press Fit Specification 5.1 requires a **hole diameter tolerance of +/-0.025mm** but on the JLCPCB Capabilities page it says: | | | | --- | --- | | Hole Size Tolerance | ±0.08mm | which exceeds the Wuerth specification. You have said: "I want my design to suit the description " but the above figures show that you cannot, so asking about the through hole plating thickness is actually irrelevant. If however, you still want to know the through hole plating thickness then you can ask directly by email to support at JLCPCB.com
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Luks 2 months ago
@andyfierman The actual question of the post was "How thick is the through-plating of a through hole pad?". So it is not irrelevant. Besides other users might ask themselve the same question an then they could find the answer here.
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andyfierman 2 months ago
@Luks, Yes you asked how thick the through plating was but you then went on to describe that: "I would like to implement a press-fit contact. The manufacturer describes the requirements of the pad very accurate..." and then presented the spec for doing so. That spec includes a requirement for the hole diameter which JLCPCBs standard processes cannot meet so therefore you cannot reliably use your preferred press-fit contacts. Therefore in this context there is little point in knowing the through plating thickness when another parameter in the PCB process will prevent you from using them anyway. I recognised that there may be other reasons that you may wish to know the through hole plating thickness but (a) I do not know the value and (b) I do not work for JLCPCB which is why I then went on to say that: "If however, you still want to know the through hole plating thickness then you can ask directly by email to support at JLCPCB.com". Regarding your concern that: "Besides other users might ask themselve the same question an then they could find the answer here.", if you get an answer from JLCPCB on this then it would be very helpful to others if you post it back here for anyone to see.
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Luks 2 months ago
I got an answer from JLCPCB. The thickness of the copper plating is 18 µm. ![Through plating.jpg](//image.easyeda.com/pullimage/LMyr9ChxkPkQejL3GwEihSRZXclPsBvFFGGPhEdZ.jpeg) I also found out that the minimum hole size of a plated through hole pad is 0.65 mm and the maximum hole size is 6.3 mm.
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andyfierman 2 months ago
@Luks, Thanks for posting this information back to the forum. :)
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