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

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