To measure the Viscosity of solder paste you can use following equipment: Viscometer : Brookefield RVTV+ Spindle : TF RPM : 5 The Method is given in the IPC Test procedures. > ---------- > From: Alderete, Michael[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;Alderete, Michael > Sent: Monday, March 22, 1999 2:04 PM > To: [log in to unmask] > Subject: re: Paste Viscosity > > Rob- > > cps stands for centipoise, a unit of viscosity. KCPS is thousands of > centipoise. ASTM, and possible IPC, have methods for testing paste > viscosity. Also, try suppliers such as alphametals (Cookson). > > Michael Alderete > > > > Rob wrote... > ------------------------------ > > Date: Mon, 22 Mar 1999 14:31:17 -0500 > From: Rob Watson <[log in to unmask]> > Subject: Paste Viscosity > > Boy, I am full of questions today... As you can tell, I am really digging > into > the screen printing operations. > > I have one more question, I have a troubleshooting guide for the SMT > process. > Actually, a presentation someone gave me from a SMTA meeting about 2 years > ago. > > Anyways, this guide recommends that solder paste viscosity be between 1000 > KCPS > +/- 10%. > Does anyone know what this is? How would you go about testing to verify > this? > What test methods and equipment would you use to do this? > > Thanks again for your support in advance, > > Rob Watson > Sanmina Corp. > > ------------------------------ > ################################################################ 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 ################################################################