Hi Steve: Can you share on the solder joint integrity of this type of 1206 quad resistor network under temperature excursion range form -40 to 105 (or 125 deg. C) ? How many temperature cycles of this type of components can endure ? Do you have any experience with the capacitor network too ? Thanks for sharing ! regards, Chan SL (Embedded image moved "Stephen R. Gregory" <[log in to unmask]> to file: 02/05/2001 10:16 AM pic14291.pcx) Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to [log in to unmask] To: [log in to unmask] cc: (bcc: Su Liang Chan/SG/DELCO) Subject: Re: [TN] Use of 1206 quad resistor networks Hi Andy, Looking at the *.PDF file, these are leaded (or "outties" as I have called them), there are other types with a castellated termination ("innies"...hehehe, kinda' like belly-buttons). Seriously, I have found less soldering problems with the castellated types. Like you, I have discovered bridges, opens, etc. when using the "leaded" chip networks...I don't have a good fix for your problems, other than to change to a castellated network. You shouldn't need to change anything if you switch to them, they'll fit in the same footprint, and you won't have all the defects... -Steve Gregory- << Dear TechNet, In the past we have occasionally experienced assembly problems using 1206 quad resistor packages like Yageo TC and YC series components. The problems are usually solder related and the result is typically a bridge or open. In the past we have used a standard land pattern, similar to that recommended by Yageo http://www.yageo.com.tw/D/index_4.htm and I am interested to hear of anyone else's experiences. Maybe a different land pattern would produce better production results? Regards, Andy Linahan email [log in to unmask] Jtec Perth R&D Centre tel (08) 9429 5111 fax (08) 9429 5150 >> --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------