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SMD Switching Diode
SMD Diodes Specialist
CDSQR4448 (RoHS Device)
High Speed
Features
0402(1005)
Fast Switching Speed. Designed for mounting on small surface. Extremely thin/leadless package.
0.041(1.05) 0.037(0.95)
Mechanical data
Case: 0402(1005) standard package, molded plastic. Terminals: Gold plated, solderable per MIL-STD-750,method 2026. Marking Code: Cathode band & S5 Mounting position: Any Weight: 0.001 gram(approx.).
0.020(0.50) Typ. 0.012(0.30) Typ.
0.026(0.65) 0.022(0.55)
0.022(0.55) 0.018(0.45)
Dimensions in inches and (millimeter)
Maximum Rating (at TA=25 C unless otherwise noted)
O
Parameter
Repetitive peak reverse voltage Reverse voltage Average forward current Forward current,surge peak Power Dissipation Storage temperature Junction temperature TP = 1uS TP = 8.3mS
Conditions
Symbol Min Typ Max Unit
VRRM VR IO IFSM PD TSTG Tj -40 100 80 125 2 1 125 +125 +125 V V mA A mW
O
C C
O
Electrical Characteristics (at TA=25 C unless otherwise noted)
O
Parameter
Forward voltage Reverse current Capacitance between terminals Reverse recovery time IF = 5 mA IF= 100 mA VR = 20 V VR = 80 V
Conditions
Symbol Min Typ Max Unit
VF IR CT Trr 0.62 0.72 1 25 100 9 9 V nA
PF
f = 1 MH Z , and 0.5 VDC reverse voltage IF = IR = 10mA,Irr=0.1 X IR ,R L =100ohm
nS
REV:B
QW-A0035
Page 1
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDSQR4448)
Fig. 1 - Forward characteristics
1000
10u
125 C
O
Fig. 2 - Reverse characteristics
Reverse current ( A )
Forward current (mA )
100
1u
75 C
O
10
100n
1
10n
25 C
O
C
C
O
125
O
-25
75
25
O
C
0.1
1n
-25 C
O
O
C
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 75 100 125 150
Reverse voltage (V)
Ambient temperature ( C)
REV:B
QW-A0035
Page 2
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
Reel Taping Specification
P0 P1 d Index hole E T
F B
Polarity
W C
P
A
12 0
o
D2
D1 D
W1
Trailer ....... .......
10 pitches (min)
Device ....... ....... ....... .......
Leader ....... .......
10 pitches (min)
End
Start
Direction of Feed
SYMBOL
A
0.75 0.10
0.026 0.004
B
1.15 0.10
0.045 0.004
C
0.60 0.10
0.024 0.004
d
1.55 0.10
0.061 0.004
D
178 1
7.008 0.04
D1
60.0 MIN.
2.362 MIN.
D2
13.0 0.20
0.512 0.008
QR/0402
(mm) (inch)
SYMBOL
E
1.75 0.10
0.069 0.004
F
3.50 0.05
0.138 0.002
P
4.00 0.10
0.157 0.004
P0
4.00 0.10
0.157 0.004
P1
2.00 0.10
0.079 0.004
T
0.22 0.05
0.009 0.002
W
8.00 0.20
0.315 0.008
W1
13.5 MAX.
0.531 MAX.
QR/0402
(mm) (inch)
REV:B
QW-A0035
Page 3
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
Marking Code
Part Number CDSQR4448 Marking Code
S5
S5
Suggested PAD Layout
QR/0402 SIZE (mm) A B C D E 0.750 0.500 0.700 1.250 0.250 (inch) 0.030 0.020
C D A E
0.028 0.049 0.010
B
Standard Package
Qty per Reel Case Type (Pcs) QR/0402 5000 Reel Size (inch) 7
REV:B
QW-A0035
Page 4
Comchip Technology CO., LTD.

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