CDST-4148-G

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.
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