COMCHIP Small Signal Switching Diodes CDST-21/A/C/S-G Reverse Voltage: 250 Volts Forward Current: 200 mA RoHS Device Features SOT-23 -Design for mounting on small surface. 0.119(3.00) 0.110(2.80) -High speed switching. 3 0.056(1.40) -High mounting capability, strong surge withstand, high reliability. 0.047(1.20) 1 2 0.083(2.10) Mechanical data 0.066(1.70) -Case: SOT-23, molded plastic. 0.006(0.15) 0.002(0.05) -Terminals: solderable per MIL-STD-750, method 2026. 0.044(1.10) 0.103(2.60) 0.035(0.90) 0.086(2.20) -Approx. weight: 0.008 grams 0.006(0.15) max 0.020(0.50) 0.013(0.35) Circuit diagram 3 3 3 0.007(0.20) min 3 Dimensions in inches and (millimeter) 1 2 1 CDST-21-G 2 CDST-21A-G 1 2 1 CDST-21C-G 2 CDST-21S-G Maximum Ratings and Electrical Characteristics (at Ta=25 OC unless otherwise noted) Parameter Repetitive peak reverse voltage Symbol Conditions Value Units VRRM 250 V Reverse voltage VR 250 V Average forward current IF 200 mA Power dissipation PD 225 mW Maximum forward voltage VF @IF=100mA @IF=200mA 1.0 1.25 V Maximum reverse current IR @VR=200V 1 μA Maximum reverse recovery time Trr IF=10mA, RL=100Ω 50 nS Maximum diode capacitance CJ VR=0V, f=1.0MHz 5 pF Maximum junction temperature TJ 150 TSTG -55 to +150 Storage temperature O O C C REV:B Page 1 QW-B0015 Comchip Technology CO., LTD. COMCHIP Small Signal Switching Diodes RATING AND CHARACTERISTIC CURVES (CDST-21/A/C/S-G) Fig.1 Forward Characteristics Fig.2 Reverse Characteristics 1000 1000 TA=25 OC TA=155 OC TA=-25 OC R e v e r se V o lt a g e (V) F o r w a r d C u r rent ( mA) TA=-55 OC 100 10 1 TA=25 OC TA=155 OC 100 10 1 0 0.5 1 1.5 2 2.5 3 3.5 0 1 2 3 4 3000 5000 7000 Reverse Current (nA) Forward Voltage (V) REV:B Page 2 QW-B0015 Comchip Technology CO., LTD.