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Date: | Wed, 16 Jan 2013 15:04:34 +0000 |
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Pradeep,
You will find several discussions on V-scoring in the Technet Archives. V-scoring is discussed in IPC 2222.
The Internet has many locations that discuss it, for example: http://www.pcbstandards.com/forums/showthread.php?t=2261
To separate the boards at the V-score typically a sharp wheeled device (like a pizza cutter) is drawn over the V-score and does a very nice job of cutting the boards apart. Bending the boards so they break at the v-score works but is a VERY BAD PRACTICE as it puts large stress on components near the edges which possibly causes failures of the circuit with broken components or cracked etches.
See http://www.cab.de/en/electronics/pcb-separators/ for pcb separators.
Good luck,
Phil Nutting
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pradeep Menon
Sent: Wednesday, January 16, 2013 8:19 AM
To: [log in to unmask]
Subject: [TN] V scoring of Rigid flex PCB
Importance: High
Sir/Madam,
We have a customer who has asked for v scoring of rigid flex pcb. We are wondering how the PCB will be separated later, once we supply to them. Our customer has a drawing which calls for it, but they are also not very clear on this. We wanted to know whether there is a separate IPC standard or guidelines for V-scoring of rigid flex PCBs.
Tgds
Pradeep
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