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SMD Schottky Barrier Diode
SMD Diodes Specialist
CDBQR00340-HF (RoHS Device)
Io = 30 mA VR = 40 Volts Features
Halogen free. Designed for mounting on small surface. Extremely thin package. Low stored charge. Majority carrier conduction.
0.026(0.65) 0.022(0.55)
0402(1005)
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. Polarity: Indicated by cathode band. Mounting position: Any Weight: 0.001 gram(approx.).
0.020(0.50) Typ. 0.012(0.30) Typ.
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 Sunction temperature Junction temperature
Conditions
Symbol Min Typ Max Unit
VRRM VR IO 45 40 30 500 200 -40 +125 +125 V V mA mA mW
O
8.3 ms single half sine-wave superimposed on rate load(JEDEC method)
IFSM PD TSTG Tj
C C
O
Electrical Characteristics (at TA=25 C unless otherwise noted)
O
Parameter
Forward voltage Reverse current Capacitance between terimnals VR = 30V VR = 40V
Conditions
IF = 1 mA DC
Symbol Min Typ Max Unit
VF IR CT 1.5 0.37 0.50 1.00 V uA pF
F = 1 MHZ and 1 VDC reverse voltage
REV:A
QW-G1106
Page 1
Comchip Technology CO., LTD.
SMD Schottky Barrier Diode
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDBQR00340-HF)
Fig. 1 - Forward characteristics
100m 1m
Fig. 2 - Reverse characteristics
100u
Forward current (A )
10m
Reverse current ( A )
125 C
O
10u
75 C
O
1m
1u
100n
25 C
O
100u
5C 75 O C
O
12
25
10n
-25 C
O
C
-25
O
C
O
10u 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
1n 0 5 10 15 20 25 30 35 40
Forward voltage (V)
Reverse voltage (V)
Fig.3 - Capacitance between terminals characteristics
Capacitance between terminals (PF)
10
Fig.4 - Current derating curve
Mounting on glass epoxy PCBs
Average forward current(%)
30
f = 1 MHz Ta = 25 C
100
80
1
60
40
20
0.1
0 5 10
15
0
20
25
0
25
50
75
100
O
125
150
Reverse voltage (V)
Ambient temperature ( C)
REV:A
QW-G1106
Page 2
Comchip Technology CO., LTD.
SMD Schottky Barrier 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
0.030 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:A
QW-G1106
Page 3
Comchip Technology CO., LTD.
SMD Schottky Barrier Diode
SMD Diodes Specialist
Marking Code
Part Number CDBQR00340-HF Marking Code
B2
B2
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:A
QW-G1106
Page 4
Comchip Technology CO., LTD.

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