SR2020CT THRU SR2060CT SCHOTTKY BARRIER RECTIFIERS Reverse Voltage – 20 to 60 Volts Forward Current – 20 Amperes Features • Plastic package has Underwriters Laboratory Flammability Classification 94V-0 • Metal of silicon rectifier, majority carrier conduction • Guard ring for transient protection • High capability • Low power loss, high efficiency • High current capability, low forward voltage • High surge capacity • For use in low voltage, high frequency inverters, free wheeling and polarity protection applications PIN 1 PIN 3 CASE PIN 2 PIN 1 PIN 1 PIN 3 CASE PIN 3 PIN 2 POSITIVE CT NEGATIVE CT SUFFIX "A" CASE PIN 2 DOUBLER SUFFIX "D" Mechanical Data • Case: Molded plastic body, TO-220 • Epoxy: UL 94V-O rate flame retardant • Terminals: Leads solderable per MIL-STD-202, method 208 • Polarity: As marked • Mounting Position: Any Absolute Maximum Ratings and Characteristics Ratings at 250C unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate by 20%. Symbols SR2020CT SR2030CT SR2040CT SR2050CT SR2060CT Units Maximum recurrent peak reverse voltage VRRM 20 30 40 50 60 V Maximum RMS voltage VRMS 14 21 28 35 42 V Maximum DC blocking voltage VDC 20 30 40 50 60 V Maximum average forward rectified current (see fig.1) I(AV) 20 A Peak forward surge current 8.3mS single half sine-wave superimposed on rated load (JEDEC method) IFSM 250 A Maximum forward voltage at 10 A DC Maximum reverse current at rated blocking voltage TC = 25 OC TC = 100OC Typical junction capacitance (Note 1) Typical thermal resistance (Note 2) Operating junction temperature range Storage temperature range Notes: VF 0.55 V 1.0 50 IR CJ 600 mA 400 -55 to +125 TS pF O 2.0 RθJC TJ 0.70 -55 to +150 -55 to +150 (1) Measured at 1MHZ and applied reverse voltage of 4 Volts DC (2) Thermal Resistance from Junction to case per leg SEMTECH ELECTRONICS LTD. ® (Subsidiary of Semtech International Holdings Limited, acompany listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 04/09/2003 C/W O C O C SR2020CT THRU SR2060CT Typical reverse characteristics per leg Forward current derating curve 10 CT 060 SR2 CT050 SR2 12 CT 2040 T-SR 8 4 0 50 150 100 Case temperature( C) Instantaneous reverse current, mA 16 020C S R2 Average forward current, A 20 TJ=100 C 1 TJ=75 C 0.1 TJ=25 C 0.01 Maximum non-repeitive peak forward surge current per leg 0 8.3ms single phase half sine wave per leg (JEDEC method) Tj = Tj max. 120 140 200 Typical forward characteristics per leg 100 100 0 10 1 100 Number of cycles at 60Hz Typical junction capacitance per leg Junction capacitance, pF 80 40 Percent of rated peak reverse voltage, % 4000 Tj=25 C f=1MHz Vsig=50mVp-p 1000 SR2020CT - SR2040CT Instantaneous forward current, A Peak forward surge current, A 0.001 300 10 SR2020CT-SR2040CT SR2050CT-SR2060CT 1 Tj=25 C Pulse width=300 s 1% duty cycle 0.1 0.2 SR2050CT - SR2060CT 100 0.1 1 0.4 0.6 0.8 0.9 Instantaneous forward voltage, V 10 100 Reverse voltage,V SEMTECH ELECTRONICS LTD. ® (Subsidiary of Semtech International Holdings Limited, acompany listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 04/09/2003