Product Notice Notice: #100115 Date: January 15, 2010 To Our Valued Customers: We appreciate your use of V•I Chip products. Our commitment to customer satisfaction is demonstrated by our notification to you of a change to the push pin assembly recommendation. Description: Previously, V•I Chip recommended a hole size for push pins of 2.95 ± 0.07 mm or 0.116 ± 0.003 in. Our testing has indicated that at the lower end of the push pin hole size tolerance the installation force can be higher than desired. In light of this testing, we are now recommending a new push pin hole size of 3.10 ± 0.07 mm or 0.122 ± 0.003 in. We performed HALT testing at the new larger hole size and had no failures or performance loss. For installation of push pins, please refer to the heat sink assembly drawing. Products Affected: Push Pins for Full and Double V•I Chip: 32434, 32435, 32436 and 32437 Push Pins for Half V•I Chip: 33622, 33623, 33624 and 33625 Datecodes: Effective immediately. Datasheets will be updated to reflect this change in a phased process beginning immediately and concluding on February 19, 2010. Action Required: Customers may care to review current assembly processes to determine if any adjustment in PCB hole diameter is merited. Technical marketing contact: Christina Ocasio V•I Chip Inc. 25 Frontage Road Andover, MA 01810 (978) 749-3334 [email protected] V.I Chip Inc. (a Vicor Company), 25 Frontage Road, Andover MA01810, Tel: (978) 470-2900, FAX: (978) 475-6715 p1/1