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SMD Switching Diode
SMD Diodes Specialist
CDSQR400B-HF
High Speed
(RoHS Device)
Features
0402(1005)
Halogen free. Designed for mounting on small surface. Extremely thin/leadless package. Low leakage current. High mounting capability, strong surge withstand, high reliability.
0.026(0.65) 0.022(0.55) 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 & S4
0.020(0.50) Typ. 0.012(0.30) Typ.
0.022(0.55) 0.018(0.45)
Mounting position: Any Weight: 0.001 gram(approx.).
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 Repetitive peak forward current Power Dissipation Storage temperature Junction temperature
Conditions
Symbol Min Typ Max Unit
VRRM VR IO 90 80 100 1000 225 125 -55 +125 +125 V V mA mA mA mW
O
8.3 ms single half sine-wave superimposed on rate load ( JEDEC method)
IFSM IFRM PD TSTG Tj
C C
O
Electrical Characteristics (at TA=25 C unless otherwise noted)
O
Parameter
Forward voltage Reverse current Capacitance between terminals Reverse recovery time VR = 80 V
Conditions
IF = 100 mA DC
Symbol Min Typ Max Unit
VF IR CT Trr 1.0 0.1 3 4 V uA
PF
f = 1 MHZ,and 0.5VDC reverse voltage VR = 6V ,IF =10 mA, RL =50 ohms
nS
REV:B
QW-G0009
Page 1
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDSQR400B-HF)
Fig. 1 - Forward characteristics
1000 10u
Fig. 2 - Reverse characteristics
125 C
O
Reverse current ( A )
Forward current (mA )
100
1u
O
10
75 C
100n
1
C
10n
25 C
O
O
O
C
125
O
C
-25
0.1
75
25
O
C
1n
-25 C
0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.1n 0 10 20 30 40 50 60 70 80 90 100
O
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 Ta = 25 C
O
Mounting on glass epoxy PCBs
100
4.0
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
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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-G0009
Page 3
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
Marking Code
Part Number CDSQR400B-HF Marking Code
S4
S4
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-G0009
Page 4
Comchip Technology CO., LTD.

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