Small Signal Switching Diodes CDST-99-HF/70-HF/56-HF Reverse Voltage: 70 Volts Forward Current: 200 mA RoHS Device Features SOT-23 Halogen free. Design for mounting on small surface. High speed switching. High mounting capability, strong surge withstand, high reliability. 0.119(3.00) 0.110(2.80) 3 0.056(1.40) 0.047(1.20) 1 Mechanical data 2 0.079(2.00) 0.071(1.80) Case: SOT-23, molded plastic. Terminals: solderable per MIL-STD-750, method 2026. Approx. weight: 0.0078 grams 0.006(0.15) 0.002(0.05) 0.041(1.05) 0.100(2.55) 0.035(0.90) 0.089(2.25) Circuit diagram 3 3 3 0.004(0.10) max 0.020(0.50) 0.012(0.30) 1 2 1 CDST-99-HF Marking Code: A7 2 CDST-70-HF Marking Code: A4 1 0.008(0.20) min 2 Dimensions in inches and (millimeter) CDST-56-HF Marking Code: A1 Maximum Ratings (at Ta=25°C 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 RθJA 556 °C/W TJ 150 °C TSTG -55 to +150 °C Thermal resistance, junction to ambient Maximum junction temperature Storage temperature Electrical Characteristics (at Ta=25°C unless otherwise noted) Parameter Reverse breakdown voltage Symbol Conditions VBR IR=100μA Forward voltage VF @IF=1mA @IF=10mA @IF=50mA @IF=150mA Reverse current IR @VR=70V Reverse recovery time trr IF=IR=10mA, Irr=0.1×IR, RL=100Ω Diode capacitance CT VR=0V, f=1.0MHz Min. Max. 70 Units V 0.715 0.855 1.0 1.25 V 2.5 μA 6 nS 1.5 pF REV:A Page 1 QW-J0002 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 10μ 1000 TA=125°C Reverse Current (A) Forward Current (mA) 1μ 100 TA=150°C TA=-40°C TA=75°C 10 TA=0°C TA=25°C 1 100n TA=75°C 10n TA=25°C TA=0°C 1n 0.1 0.1n 0 0.5 1.0 0 1.5 20 40 60 80 Forward Voltage (V) Reverse Voltage (V) Fig.3 Capacitance Between Terminals Characteristics Fig.4 Power Derating Curve 2 100 400 TJ=25°C f=1MHz Mounted on glass epoxy PCBs Power Dissipation (mW) Capacitance Between Teminals (pF) TA=-40°C 1 300 200 100 0 0 0 10 20 30 40 50 0 25 50 75 100 125 150 175 Ambient Temperature (OC) Reverse Voltage (V) REV:A Page 2 QW-J0002 Comchip Technology CO., LTD. Small Signal Switching Diodes Reel Taping Specification d P0 P1 T E Index hole F W B P C A 12 o 0 D2 D1 D W1 Trailer Device ....... ....... End ....... ....... Leader ....... ....... ....... ....... 10 pitches (min) Start 10 pitches (min) Direction of Feed SOT-23 SOT-23 SYMBOL A B C d D D1 D2 (mm) 3.10 ± 0.10 2.85 ± 0.10 1.40 ± 0.10 1.55 ± 0.10 178 ± 1 50.0 MIN. 13.0 ± 0.20 (inch) 0.122 ± 0.004 0.112 ± 0.004 0.055 ± 0.004 0.061 ± 0.004 7.008 ± 0.04 1.969 MIN. 0.512 ± 0.008 SYMBOL E F P P0 P1 W W1 (mm) 1.75 ± 0.10 3.50 ± 0.05 4.00 ± 0.10 4.00 ± 0.10 2.00 ± 0.05 8.00 ± 0.30 14.4 MAX. (inch) 0.069 ± 0.004 0.138 ± 0.002 0.157 ± 0.004 0.157 ± 0.004 0.079 ± 0.002 0.315 ± 0.012 0.567 MAX. REV:A Page 3 QW-J0002 Comchip Technology CO., LTD. Small Signal Switching Diodes Marking Code 3 Part Number Marking Code CDST-99-HF A7 CDST-70-HF A4 CDST-56-HF A1 XX 1 2 xx = Product type marking code Suggested PAD Layout SOT-23 SIZE (mm) (inch) A 0.80 0.031 B 1.90 0.075 C 2.02 0.080 D 2.82 0.111 A C D B Standard Package Qty per Reel Reel Size (Pcs) (inch) 3000 7 Case Type SOT-23 REV:A Page 4 QW-J0002 Comchip Technology CO., LTD.