PFF2, PFF4, PFF6 Axial Leaded Hermetically Sealed Superfast Recovery Rectifier Diode POWER DISCRETES Description Features Quick reference data VR = 200 - 600V IF = 1.25A trr = 30nS IR = 1µA Very low reverse recovery time Glass passivated for hermetic sealing Low switching losses Soft, non-snap off, recovery characteristics Avalanche capability Absolute Maximum Ratings Electrical specifications @ TA = 25°C unless otherwise specified. Symbol P FF2 P FF4 P FF6 Units Working Reverse Voltage VRWM 200 400 600 V Repetitive Reverse Voltage VRRM 200 400 600 V Average Forward Current @ 55°C in free air, lead length 0.375" IF(AV) 1.25 Repetitive Surge Current @ 55°C in free air, lead length 0.375" IFRM 4.25 Non-Repetitive Surge Current (tp = 8.3mS @ VR & TJMAX) IFSM 22.0 Storage Temperature Range TSTG -65 to +175 °C Operating Temperature Range TOP -65 to +175 °C Revision: April 25, 2007 1 A A A www.semtech.com PFF2, PFF4, PFF6 POWER DISCRETES Electrical Specifications Symbol P FF2 P FF4 P FF6 Units Average Forward Current max (pcb mounted, TA = 55°C) for sine wave for square wave IF(AV) IF(AV) 0.7 0.75 A Average Forward Current max. (TL = 55°C; L = 3/8") for sine wave for square wave IF(AV) IF(AV) 1.15 1.25 A I2t for fusing (t = 8.3mS) max. I2t 2.00 A 2S Forward Voltage Drop max. @ IF = 1.0A, Tj = 25°C VF 2.50 V Reverse Current max. @ VRWM, Tj = 25°C @ VRWM, Tj = 100°C IR IR 1.0 10.0 µA Reverse Recovery Time max. 0.5A IF to 1.0A IRM recovers to 0.25A IRM(REC) trr 30 nS Junction Capacitance typ. @ VR = 5V, f = 1MHz Cj 30 pF Thermal Characteristics Thermal Resistance-Junction to Lead Lead length = 0.375" Lead length = 0.0" Thermal Resistance-Junction to Ambient on 0.06" thick pcb. 1 oz. copper 2007 Semtech Corp. 2 Symbol P F F 2, P F F 4, P F F 6 Units Rθ JL 47 19 °C/W Rθ JA 100 °C/W www.semtech.com PFF2, PFF4, PFF6 POWER DISCRETES Maximum Characteristics Figure 1. Forward voltage drops as a function of forward current. Figure 2. Maximum power versus lead temperature. Figure 3. Transient thermal impedance characteristic Figure 4. Typical junction capacitance as a function of reverse voltage. 2007 Semtech Corp. 3 www.semtech.com PFF2, PFF4, PFF6 POWER DISCRETES Ordering Information Part Number Description P F F 2, P F F 4, P FF6 Axial leaded hermetically sealed(1) Note: (1) Available in bulk and tape and reel packaging. Please consult factory for quantities. Outline Drawing Dimensions Inches DIMN Millimeters Note MIN MAX MIN MAX A - 1.50 - 3.81 - B 1.10 - 28.0 - - C - .180 - 4.57 - D - .032 - 0.81 - Weight = 0.013oz Contact Information Semtech Corporation Power Discretes Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2007 Semtech Corp. 4 www.semtech.com