POWEREX eee Powerex, Inc., 200 Hillis Street, Youngwood, Pennsylvania 15697-1800 (412) 925-7272 Powerex, Europe, S.A. 428 Avenue G. Durand, BP107, 72003 Le Mans, France (43) 41.14.14 GTO Thyristors Numbering System Block 1: Block 4: GT = Stud Type L = Low voltage application (<1600 V) FG = Press Pack Type H = Meduim voitage application P5 = Brik Type (2000-2500 V) V_ = High voltage application Block 2: (3000-4000 V) Rated Controllable On-State Current X = High Frequency Series Block 5: Block 3: Factory Consideration Voltage Rating I I Vorm (x50) (Vporm and Vary for Symmetrical Types) Block 6: Blank Space = Alloy D = De-Alloy Example: Press Pack GTO Current Factory Low Voltage Voltage Consideration Applications 16 x 50 = 800 Volt: D-21