Neckdown is a term used when a trace needs to be less wide in an area to get through pad/lands or just for pad entry because of solderability issues. I.E. say a conductor trace on a board is being routed at .025 wide and you need to get between two pads that have a .020 clearance between them you will need to neckdown the trace to say .008 wide. Or you are entering a .062 pad with .10 trace and need to neckdown to say .040 close to the pad for solderability. Longwinded but basically making a trace less wide for a short distance to maintain design rule clearance or solderability. Robert M. Wolfe -----Original Message----- From: Tenison Stone [SMTP:[log in to unmask]] Sent: Thursday, November 12, 1998 4:17 PM To: [log in to unmask] Subject: [TN] neckdown Hi everyone! We're past the hump for the week, so I hope someone is compassionate and will answer a rookie question. Please describe what "neckdown" is and how it is used. Thank you for your assistance in advance. Tension Stone Telex Communications Blue Earth, MN 56013 507-526-3205 ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################