Small Signal Switching Diodes CDST-99-HF/70-HF/56-HF Reverse Voltage: 70 Volts Forward Current: 200 mA RoHS Device Halogen Free SOT-23 Features 0.119(3.00) -Design for mounting on small surface. 0.110(2.80) 3 -High speed switching. 0.056(1.40) -High mounting capability, strong surge 0.047(1.20) withstand, high reliability. 1 2 Mechanical data 0.079(2.00) 0.071(1.80) -Case: SOT-23, molded plastic. 0.006(0.15) -Terminals: solderable per MIL-STD-750, 0.002(0.05) method 2026. 0.041(1.05) 0.100(2.55) 0.035(0.90) 0.089(2.25) -Approx. weight: 0.0078 grams Circuit diagram 0.004(0.10) max 3 3 3 0.020(0.50) 0.008(0.20) min 0.012(0.30) 1 2 1 2 1 2 Dimensions in inches and (millimeter) CDST-99-HF CDST-70-HF CDST-56-HF Marking Code: A7 Marking Code: A4 Marking Code: A1 Maximum Ratings (at Ta=25C unless otherwise noted) Parameter Symbol Value Units Reverse voltage VR 70 V Forward current IF 200 mA Peak surge forward current IFSM 500 mA Power dissipation PD 225 mW Thermal resistance, junction to ambient R JA 556 C/W Maximum junction temperature TJ 150 C Storage temperature TSTG -55 to +150 C Electrical Characteristics (at Ta=25C unless otherwise noted) Parameter Symbol Conditions Min. Max. Units Reverse breakdown voltage VBR IR=100 A 70 V 0.715 IF=1mA 0.855 IF=10mA Forward voltage VF V IF=50mA 1.0 IF=150mA 1.25 A Reverse current IR VR=70V 2.5 IF=IR=10mA, Irr=0.1IR, Reverse recovery time trr 6 nS RL=100 Diode capacitance pF CT VR=0V, f=1.0MHz 1.5 REV:A QW-J0002 Page 1 Comchip Technology CO., LTD.Small Signal Switching Diodes RATING AND CHARACTERISTIC CURVES (CDST-99-HF/70-HF/56-HF) Fig.1 - Forward Characteristics Fig.2 - Reverse Characteristics 10 1000 TA=125C 1 100 TA=150C TA=-40C 100n TA=75C TA=75C TA=0C 10 TA=25C 10n TA=0C TA=25C 1 1n TA=-40C 0.1 0.1n 0 20 40 60 80 100 0 0.5 1.0 1.5 Reverse Voltage, (V) Forward Voltage, (V) Fig.3 - Capacitance Between Terminals Fig.4 - Power Derating Curve Characteristics 2 400 TJ=25C Mounted on glass f=1MHz epoxy PCBs 300 1 200 100 0 0 30 75 0 10 20 40 50 0 25 50 100 125 150 175 Reverse Voltage, (V) Ambient Temperature, (C) REV:A QW-J0002 Page 2 Comchip Technology CO., LTD. Forward Current, (mA) Capacitance Between Teminals, (pF) Power Dissipation, (mW) Reverse Current, (A)