not sure if this helps. http://www.smtsz.com/download/qxjfycs.pdf Hermus Leung Technical Service Engineer, 3M Hong Kong Victoria Centre, 5/F., 15, Watson Road, Hong Kong Fax : (852) 2969-5758 Tel : (852) 2806-6407 eMail : [log in to unmask] "Yu, Gary" <gary.yu@VIASYSTE MS.COM> To Sent by: TGAsia [log in to unmask] <[log in to unmask]> cc Subject 07/30/2007 11:23 Re: [TGA] 请教E8=AF=B7=E6=95=99 ?= PM Please respond to Asia Committe Task Group Forum <[log in to unmask]>; Please respond to "Yu, Gary" <gary.yu@VIASYSTE MS.COM> CAF is a complex issue, not just a material issue. Even the base material have Anti-CAF, if PCB fabricator did not well control their process, it also fail in CAF testing. Best regards, Gary Yu -----Original Message----- From: TGAsia 代理 [log in to unmask] Sent: 30/7/2007 [Mon] 22:28 To: [log in to unmask] Cc: Subject: Re: [TGA] 请教E8=AF=B7=E6=95=99?= 个人认为非CAF材料未开纤作Migration测试意义不大,大家谈的测试 条件应该满足CUSTOMER COUPON,IPC STD中有SIR TEST COUPON 可参考, 另测试条件应该附加测试电压DC100 or 50V,加速Cu离子迁移. winsun zhao/赵文成 在2007-07-26,"JiaXing LIU" <[log in to unmask]> 写道: 大家也好 我们也有同样的CAF问题。 请问如果用的是普通的非CAF材料,PTH孔的间距最小安全 间距是多少不会有CAF的问题?如果用 anti-CAF的材料的话,PTH孔的间距最小安全间距是多 少? Isola 370HR, Tg>=150degrees, Td 340D. core thickness is 0.7mm, 2X7628 core. Total thickness is 1.6mm, 1Oz Copper. 8 pairs of via holes with 15.7mils parallel distance between hole wall to hole wall. The pair of holes is anode and cathode. The hole size is 0.35mm. finish is immersion silver. 我们的测试要求是85度和85%湿度, 1000小 时. >>> Li Ruijuan <[log in to unmask]> 2007-7-26 11:23 >>> 大家好! 请问关于PCB板过孔之间的绝缘阻抗要求是什么,测试条件 呢,对孔距\孔径有没有要求 ?另外,如果验证是否会有CAF缺陷,实验条件怎样规定,谢 谢 孔间距很大,湿热试验后孔间绝缘电阻却减小很多,可能是 什么原因呢? -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail is solely property of the sender's organization. This mail communication is confidential. Recipients named above are obligated to maintain secrecy and are not permitted to disclose the contents of this communication to others. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the originator of the message. Any views expressed in this message are those of the individual sender. This message has been scanned for viruses and Spam by ZTE Anti-Spam system. _____ 《大 话 西 游 3》 首 届 玩 家 见 面 会 即 将 在 广 州 召 开!敬 请 关 注 >> <http://event.mail.163.com/chanel/xy3.htm?from=126_NO9>