BI-38-H12 Hollow Series NPN Open Collector Variants BI-38-H12 Hollow Series NPN Open Collector Filters Product Image | Model Number | PPR Product Image | Model Number | PPR PPR BI-38-H12-200-NU200BI-38-H12-500-NU500BI-38-H12-1000-NU1000BI-38-H12-1024-NU1024BI-38-H12-2000-NU2000BI-38-H12-2500-NU2500