Hi Jens, Tolerances for laminate between 1.04mm to 1.674mm are: Class A/K +/-0.19mm Class B/L +/-0.13mm Class C/M +/-0.075mm Classes ABC are measured without the metal cladding. Classes KLM are measured with the metal cladding. regards Geoff Layhe -----Original Message----- From: PCBA [mailto:[log in to unmask]] Sent: 27 September 2001 08:47 To: [log in to unmask] Subject: [TN] IPC 4101 - what specs Hi, isn't it very sad that I can't find the laminate tolerance specs for IPC 4101 on their homepage? Anyway, I hope somebody can jump to the rescue and let me know the specs for this laminates: (1.50 / 1.60mm only if there is any difference) FR2 CEM-1 FR4 ...just a link where I can look it up would be OK. Thanks! Jens Behrens ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- Private & Confidential: This e-mail message is confidential and is intended solely for the person or organisation to whom it is addressed. If the message is received by anyone other than the addressee please return the message to the sender by replying to it and then delete the message from your computer. --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------