Small Signal Switching Diodes CDST-4148-HF Reverse Voltage: 75 Volts Forward Current: 150 mA RoHS Device Halogen Free SOT-23 Features 0.118(3.00) 0.110(2.80) - Design for mounting on small surface. 3 - High speed switching. 0.055(1.40) 0.047(1.20) - High mounting capability, strong surge withstand, high reliability. 1 2 0.079(2.00) 0.071(1.80) Mechanical data 0.006(0.15) 0.003(0.08) - Case: SOT-23, molded plastic. - Terminals: solderable per MIL-STD-750, method 2026. - Weight: 0.0078 grams(approx.). 0.041(1.05) 0.035(0.90) 0.100(2.55) 0.089(2.25) 0.004(0.10) max 0.020(0.50) 0.012(0.30) Circuit diagram 0.020(0.50) 0.012(0.30) 3 Dimensions in inches and (millimeter) 1 2 Maximum Rating and Electrical Characterisitcs, Single Diode (at TA=25 ºC unless otherwise specified) Symbol Limit Unit VRRM VRWM VR 75 V VR(RMS) 53 V Forward continuous current IFM 300 mA Average rectified output current IO 150 mA IFSM 2 A PD 350 mW RθJA 357 °C/W Junction temperature range Tj -40 ~ +150 °C Storage temperature range TSTG -55 ~ +150 °C Parameter Peak repetitive peak reverse voltage Working peak reverse voltage DC blocking voltage RMS reverse voltage Non-Repetitive peak forward surge current @t=8.3ms Power dissipation Thermal resistance junction to ambient Company reserves the right to improve product design , functions and reliability without notice. REV:A QW-J0009 Page 1 Comchip Technology CO., LTD. Small Signal Switching Diodes Electrical Characteristics (at T =25 ºC unless otherwise specified) A Parameter Conditions Symbol Min V(BR) 75 Typ Max Unit Reverse breakdown voltage IR = 100μA Reverse voltage leakage current VR = 75V IR 2.5 μA Reverse voltage leakage current VR = 20V IR 25 nA V 715 IF = 1mA IF = 10mA Forward voltage 855 VF mV IF = 50mA 1000 IF = 150mA 1250 Diode capacitance VR = 0, f = 1MHz CT 2 PF Reverse recovery time IF = IR = 10mA, Irr = 0.1xIR, RL = 100Ω Trr 4 nS RATING AND TYPICAL CHARACTERISTIC CURVES (CDST-4148-HF) Fig.2 - Reverse Characteristics Fig.1 - Forward Characteristics 300 1000 Reverse Current, IR (nA) °C TA= 100 10 TA= 2 5° C Forward Current, IF (mA) 100 1 0.1 100 TA=25°C 10 1 0 0.4 0.8 1.2 1.6 20 0 40 80 60 Forward Voltage, VF (V) Reverse Voltage, VR (V ) Fig.3 - Capacitance Characteristics Fig.4 - Power Derating Curve 400 1.4 TJ=25°C f=1.0MHz Power Dissipation, PD (mW) Capacitance Between Terminals, CT (pF) TA=100°C 1.3 1.2 1.1 0 0 5 10 15 20 300 200 100 0 0 25 50 75 100 125 150 Ambient Temperature, TA (°C) Reverse Voltage, VR (V) Company reserves the right to improve product design , functions and reliability without notice. REV:A QW-J0009 Page 2 Comchip Technology CO., LTD. Small Signal Switching Diodes Reel Taping Specification P1 XXX B F E d P0 12 o 0 D2 D1 D W1 SOT-23 SOT-23 SYMBOL A B C d D D1 D2 (mm) 3.15 ± 0.10 2.77 ± 0.10 1.22 ± 0.10 1.50 ± 0.10 178.00 ± 2.00 54.40 ± 1.00 13.00 ± 1.00 (inch) 0.124 ± 0.004 0.109 ± 0.004 0.048 ± 0.004 0.059 ± 0.004 7.008 ± 0.079 2.142 ± 0.039 0.512 ± 0.039 SYMBOL E F P P0 P1 W W1 (mm) 1.75 ± 0.10 3.50 ± 0.10 4.00 ± 0.10 4.00 ± 0.10 2.00 ± 0.10 8.00 + 0.30 / - 0.10 12.30 ± 1.00 (inch) 0.069 ± 0.004 0.138 ± 0.004 0.157 ± 0.004 0.157 ± 0.004 0.079 ± 0.004 0.315 + 0.012 / - 0.004 0.484 ± 0.039 Company reserves the right to improve product design , functions and reliability without notice. REV:A QW-J0009 Page 3 Comchip Technology CO., LTD. Small Signal Switching Diodes Marking Code 3 Part Number Marking Code CDST-4148-HF KA2 XXX 1 2 XX = Product type marking code Solid dot = Halogen free parts Suggested PAD Layout B SOT-23 SIZE (mm) (inch) A 0.80 0.031 B 0.60 0.024 C 1.90 0.075 D 2.02 0.080 E 2.82 0.111 A D E C Standard Packaging Case Type SOT-23 Qty Per Reel Reel Size (Pcs) (inch) 3,000 7 Company reserves the right to improve product design , functions and reliability without notice. REV:A QW-J0009 Page 4 Comchip Technology CO., LTD.