SMD Ultra Fast Recovery Rectifiers US1A-HF Thru. US1M-HF Reverse Voltage: 50 to 1000 Volts Forward Current: 1 Amp RoHS Device Halogen Free SMA/DO-214AC 0.177(4.50) 0.157(4.00) Features 0.063(1.60) 0.051(1.30) - For surface mounted applications. 0.106(2.70) 0.091(2.30) - Low profile package. - Glass passivated chip junction. 0.205(5.20) 0.185(4.70) - Easy to pick and place. 0.012(0.31) - High efficiency. 0.006(0.15) 0.087(2.20) 0.075(1.90) 0.059(1.50) 0.035(0.90) Mechanical data - Case: SMA 0.012(0.30) Typ. Dimensions in inches and (millimeter) - Terminals: Solderable per MIL-STD-750, method 2026. Circuit Diagram Anode Cathode Maximum Ratings and Electrical Characteristics Ratings at 25C ambient temperature unless otherwise specified. Single phase, half wave, 60Hz resistive or inductive load, for capacitive load, derate by 20% Symbols US1A -HF US1B -HF US1D -HF US1G -HF US1J -HF US1K -HF US1M -HF Units Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 V Maximum RMS voltage VRMS 35 70 140 280 420 560 700 V Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 V Parameter Maximum average forward rectified current at Tc =125C Peak forward surge current, 8.3ms single half sine-wave superimposed on rated load IF(AV) 1 A IFSM 30 A Max. instantaneous forward voltage at 1A VF Maximum DC reverse current at rated DC blocking voltage IR Ta = 25C Ta =125C Maximum reverse recovery time (Note 1) Typical thermal resistance (Note 2) Typical junction capacitance (Note 3) Operating and storage temperature range 1.0 1.3 1.65 5 100 trr A 75 50 V ns RJA 75 C/W Cj 15 pF Tj, Tstg -55 ~ +150 C Notes: 1. Measured with IF = 0.5A, IR = 1A, Irr = 0.25A. 2. P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas. 3. Measured at 1 MHz and applied reverse voltage of 4 V D.C Company reserves the right to improve product design , functions and reliability without notice. QW-JU008 REV:A Page 1 Comchip Technology CO., LTD. SMD Ultra Fast Recovery Rectifiers Rating and Characteristic Curves (US1A-HF Thru. US1M-HF) Fig.1 - Forward Current Derating Curve Fig.2 - Typical Reverse Characteristics 100 Instantaneous Reverse Current, (A) Average Forward Current, (A) 1.2 1.0 0.8 0.6 0.4 0.2 Single phase half-wave 60Hz resistive or inductive load 0 0 25 50 75 100 125 TJ=25C 1.0 0 20 40 60 80 100 120 140 Case Temperature, (C) Percent of Rated Peak Reverse Voltage, (%) Fig.3 - Typical Forward Characteristic Fig.4 - Maximum Non-Repetitive Peak Forward Surge Current 40 Peak Forward Surge Current, (A) TJ=25C US1A-HF~US1D-HF 1.0 US1G-HF 0.1 US1J-HF~US1M-HF 0.01 0.001 0 0.5 1.0 1.5 2.0 35 30 25 20 15 10 5 0 2.5 8.3ms single half sine wave (JEDEC Method) 10 1 100 Instantaneous Forward Voltage, (V) Number of Cycles Fig.5 - Typical Transient Thermal Impedance Fig.6 - Typical Junction Capacitance 100 100 TJ=25C Junction Capacitance, (pF) Instantaneous Forward Current, (A) 10 0.1 150 10 Transient Thermal Impedance, (C/W TJ=125C 10 1 0.01 0.1 1 10 100 10 1 0.1 Pulse Duration, t (sec 1 10 100 Reverse Voltage, (V) Company reserves the right to improve product design , functions and reliability without notice. QW-JU008 REV:A Page 2 Comchip Technology CO., LTD. SMD Ultra Fast Recovery Rectifiers Reel Taping Specification d P0 T P1 E Index hole F B W C P A 12 o 0 D1 D2 D W1 Trailer Device ....... ....... End ....... ....... Leader ....... ....... ....... ....... 160mm (min) Start 400mm (min) Direction of Feed DO-214AC (SMA) SYMBOL A B C d D D1 D2 (mm) 2.70 0.10 5.33 0.10 2.35 0.10 1.55 0.05 330 2.00 75.00 1.00 13.00 0.20 (inch) DO-214AC (SMA) 0.106 0.004 0.210 0.004 0.093 0.004 0.061 0.002 12.992 0.079 2.953 0.039 0.512 0.008 SYMBOL E F P P0 P1 T W W1 (mm) 1.75 0.10 5.50 0.05 4.00 0.10 4.00 0.10 2.00 0.10 0.20 0.03 12.00 0.30 14.70 + 2.00 - 1.00 0.008 0.001 0.472 0.012 0.579 + 0.079 - 0.039 (inch) 0.069 0.004 0.217 0.002 0.157 0.004 0.157 0.004 0.079 0.004 Company reserves the right to improve product design , functions and reliability without notice. QW-JU008 REV:A Page 3 Comchip Technology CO., LTD. SMD Ultra Fast Recovery Rectifiers Marking Code Part Number Marking Code US1A-HF US1A US1B-HF US1B US1D-HF US1D US1G-HF US1G US1J-HF US1J US1K-HF US1K US1M-HF US1M XXXX Product type marking code Cathode band xxxx = Product type marking code Suggested PAD Layout D DO-214AC (SMA) SIZE A (mm) (inch) A 2.40 0.094 B 1.80 0.071 C 1.80 0.071 D 6.00 0.236 C B Note: 1. The pad layout is for reference purpose only. Standard Packaging REEL PACK Case Type DO-214AC (SMA) REEL Reel Size ( pcs ) (inch) 5,000 13 Company reserves the right to improve product design , functions and reliability without notice. QW-JU008 REV:A Page 4 Comchip Technology CO., LTD.