Please fill out the form below for Transistor and get a quote for part number 6643-187 by Picker Intl Inc with NSN 5961012954801 and FSC Name is 5961 Semiconductor Devices and Associated Hardware, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number 6643-187. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.