Hi Phil, I dont think there's any standard to quantify the amount used. usually just slap it on and hope that all gaps are filled when you mechanically fasten it down. Have you considered using Thermal tapes/pads instead of grease? Less messy and easier to apply like double sided tapes. Could be UV or heat initiated. More expensive though. Regards, Hann Phil Nutting <[log in to unmask]> on 08/14/2001 10:42:09 AM Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to Phil Nutting <[log in to unmask]> To: [log in to unmask] cc: (bcc: Hann Pang/US-Corporate/3M/US) Subject: [TN] Application of Thermal Grease We use many TO-220 and TO-247 packages mounted to heatsinks. Some of these applications require the use of thermal grease. The age old question is how much grease is enough? This is a political football that is constantly tossed around. Does anyone know of a manufacturer's specification or some organization's standard that clearly defines how much thermal grease is the correct amount? Thanks, Phil Nutting Manufacturing Engineer Kaiser Systems, Inc. --------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------