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SMD Switching Diode
COMCHIP
SMD Diodes Specialist
CDSWM4148 (RoHS Device)
High Speed Features
Designed for mounting on small surface. Extremely thin / leadless package. High speed switching. High mounting capability, strong surge withstand ,high reliability.
0.055(1.40) 0.063(1.60)
WM(SOD-123F)
0.134(3.40) 0.142(3.60)
Mechanical data
Case: SOD-123F molded plastic, fits onto footprint of minimelf and SOD-123 on PCB.
0.018(0.45) Typ. 0.027(0.70) 0.035(0.90)
Terminals: Gold plated, solderable per MIL-STD-750,method 2026. Polarity: Indicated by cathode band. Mounting position: Any Weight: 0.0115 gram(approx.).
Dimensions in inches and (millimeter)
0.006(0.15) 0.007(0.20)
Maximum Rating (at TA=25 C unless otherwise noted)
O
Parameter
Repetitive peak reverse voltage Reverse voltage Average forward current Forward current,surge peak Repetitive peak forward current Power Dissipation Thermal Resistance Junction To ambient air Storage temperature Junction temperature TP = 1uS TP = 1mS
Conditions
Symbol Min Typ Max Unit
VRRM VR IO IFSM IFRM PD R
JA
100 75 150 4 1 300 350 285 -55 +125 +125
V V mA
A mA mW
O
C/W
O
TSTG Tj
O
C C
O
Electrical Characteristics (at TA=25 C unless otherwise noted)
Parameter
Forward voltage Reverse current Capacitance between terminals Reverse recovery time VR = 20 V VR = 75 V f = 1 MH Z,and 0VDC reverse voltage IF = IR 10 mA, RL =100 ohms, Irr = 1 mA
Conditions
IF = 50 mA DC
Symbol Min Typ Max Unit
VF IR CT TRR 1.0 25 2.5 4 4 V nA uA
PF
nS
REV:A
QW-A0100
Page 1
SMD Switching Diode
Rating and Characteristic Curves (CDSWM4148)
Fig. 1 - Forward characteristics
1000 10u
125 C
O
COMCHIP
SMD Diodes Specialist
Fig. 2 - Reverse characteristics
Reverse current ( A )
Forward current (mA )
100
1u
75 C
O
10
100n
1
10n
25 C
O
O
C
C
O
125
C
O
-25
25
75
O
C
0.1
1n
-25 C
O
0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
0.1n 0 10 20 30 40 50 60 70 80 90 100
Forward voltage (V)
Reverse voltage (V)
Fig.3 - Capacitance between terminals characteristics
Capacitance between terminals (PF)
5.0
Fig.4 - Current derating curve
Average forward current(%)
f=1MHz O TA=25 C
4.0
Mounting on glass epoxy PCBs
100
80
3.0
60
2.0
40
1.0
20
0 0 5 10 15 20 25 30 35
0
0 25 50 75 100
O
125
150
Reverse voltage (V)
Ambient temperature ( C)
REV:A
QW-A0100
Page 2

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