Small Signal Switching Diodes CDST-4148-G Reverse Voltage: 75 Volts Forward Current: 150 mA RoHS Device SOT-23 Features -Design for mounting on small surface. 0.118(3.00) 0.110(2.80) -High speed switching. 3 -High mounting capability, strong surge withstand, high reliability. 0.055(1.40) 0.047(1.20) 1 Mechanical data 2 0.079(2.00) 0.071(1.80) -Case: SOT-23, molded plastic. 0.006(0.15) 0.003(0.08) -Terminals: solderable per MIL-STD-750, method 2026. -Approx. weight: 0.0078 grams 0.041(1.05) 0.035(0.90) 0.100(2.55) 0.089(2.25) 0.004(0.10) max Circuit diagram 0.020(0.50) 0.012(0.30) 3 0.020(0.50) 0.012(0.30) Dimensions in inches and (millimeter) 1 2 Maximum Ratings and Electrical Characteristics, Single Diode (at Ta=25°C unless otherwise noted) Parameter Symbol Peak Repetitive peak reverse voltage Max. Units VRRM 75 V RMS reverse voltage VRMS 53 V DC Blocking voltage VDC 75 V Forward continous current IFM 300 mA Average forward current IO 150 mA 2.0 1.0 A Conditions Min. T=1.0 μS T=1.0 S Typ. Peak forward surge current IFSM Power dissipation PD 350 mW Thermal resistance junction to ambient RθJA 357 °C/W Reverse breakdown voltage V(BR)R Forward voltage VF Reverse current IR IR=100µA 75 @IF=1mA @IF=10mA @IF=50mA @IF=150mA @VR=20V @VR=75V Reverse recovery time Trr IF=IR=10mA, 1rr=0.1*IR RL=100Ω Capacitance between terminals CT VR=0V, f=1.0MHz Junction temperature TJ Storage temperature TSTG -65 V 0.715 0.855 1.0 1.25 25 nA 2.5 μA 4 nS 2 pF +150 °C +150 °C V REV:D Page 1 QW-B0001 Comchip Technology CO., LTD. Small Signal Switching Diodes RATING AND CHARACTERISTIC CURVES (CDST-4148-G) Fig.1 - Forward Characteristics Fig.2 - Power Derating Curve 1000 400 Power Dissipation, (mW) Forward Current, (mA) Mounted on glass epoxy PCBs 100 TA=150°C TA=-40°C TA=0°C TA=75°C 10 TA=25°C 1 300 200 100 0 0 0.5 1.0 1.5 0 Forward Voltage, (V) 25 50 75 100 125 Fig.3 - Reverse Characteristics 2 TA=150°C TJ=25°C f=1.0MHz 100n Total Capacitance, (pF) TA=125°C 1μ Reverse Current, (A) 175 Fig.4 - Capacitance Between Terminals Characteristics 10μ TA=75°C TA=25°C 10n TA=0°C 1n 1 TA=-40°C 0.1n 0 20 40 60 80 0 100 0 10 Reverse Voltage, (V) 30 40 50 Fig.6 - Leakage Current vs Junction Temperature 1000 10000 Leakage Current, ( nA) 100 10 1.0 0.1 0.01 0 20 Reverse Voltage, (V) Fig.5 - Forward Characteristics Instantaneous Forward Current, ( mA) 150 Ambient Temperature, (°C) 1000 100 10 1 1 2 0 Instantaneous Forward Voltage, (V) 100 200 Junction Temperature, (°C) REV:D Page 2 QW-B0001 Comchip Technology CO., LTD. Small Signal Switching Diodes Reel Taping Specification d P0 T P1 E Index hole F W B C P 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) 3.15 ± 0.10 2.77 ± 0.10 1.22 ± 0.10 1.50 + 0.10 178 ± 1.00 54.40 ± 0.40 13.00 ± 0.20 (inch) 0.124 ± 0.004 0.109 ± 0.004 0.048 ± 0.004 0.059 + 0.004 7.008 ± 0.039 2.142 ± 0.016 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 ± 0.10 8.00 + 0.30 /–0.10 9.50 ± 1.00 (inch) 0.069 ± 0.004 0.138 ± 0.002 0.158 ± 0.004 0.158 ± 0.004 0.079 ± 0.004 0.315 + 0.012 /–0.004 0.374 ± 0.039 REV:D Page 3 QW-B0001 Comchip Technology CO., LTD. Small Signal Switching Diodes Marking Code 3 Part Number Marking Code CDST-4148-G KA2 XXX 1 2 xxx = Product type marking code Suggested PAD Layout SOT-23 SIZE (mm) (inch) 0.80 0.031 A A C B 1.90 0.075 C 2.02 0.080 D 2.82 0.111 D B Standard Packaging REEL PACK Case Type SOD-23 REEL Reel Size ( pcs ) (inch) 3,000 7 REV:D Page 4 QW-B0001 Comchip Technology CO., LTD.