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SMD Switching Diode
SMD Diodes Specialist
CDSER4148 (RoHS Device)
High Speed
Features
0503(1308)
Designed for mounting on small surface. Extremely thin/leadless package. High mounting capability, strong surge withstand, high reliability.
0.053(1.35) 0.045(1.15)
0.034(0.85) 0.026(0.65)
Mechanical data
Case: 0503(1308) standard package, molded plastic. Terminals: Gold plated, solderable per MIL-STD-750,method 2026. Marking code: cathode band & S3 Mounting position: Any Weight: 0.002 gram(approx.).
0.022(0.55) Typ. 0.016(0.40) Typ. 0.030(0.75) 0.024(0.60)
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 TP = 1uS TP = 1mS
Conditions
Symbol Min Typ Max Unit
VRRM VR IO IFSM IFRM PD TSTG Tj -40 4 1 300 150 +125 +125 100 75 150 V V mA
A mA 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 VR = 20 V VR = 75 V
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
f = 1 MHZ,and 0VDC reverse voltage IF = IR = 10 mA, RL =100 ohms, Irr = 1mA
nS
REV:B
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Page 1
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDSER4148)
Fig. 1 - Forward characteristics
1000 10u
Fig. 2 - Reverse characteristics
125 C
O
Reverse current ( A )
Forward current (mA )
100
1u
10
100n
75 C
O
1
O
10n
25 C
1n
O
C
O
C
0.1
C -25 O C
125
75
25
O
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
-25 C
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
0.90 0.10
0.035 0.004
B
1.46 0.10
0.057 0.004
C
0.80 0.10
0.031 0.004
d
1.55 0.05
0.061 0.002
D
178 1
7.008 0.04
D1
60.0 MIN.
2.362 MIN.
D2
13.0 0.20
0.512 0.008
ER/0503
(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
0.008 0.002
W
8.00 0.20
0.315 0.008
W1
13.5 MAX.
0.531 MAX.
ER/0503
(mm) (inch)
REV:B
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Page 3
Comchip Technology CO., LTD.
SMD Switching Diode
SMD Diodes Specialist
Marking Code
Part Number CDSER4148 Marking Code
S3
S3
Suggested PAD Layout
ER/0503 SIZE (mm) A B C D E 0.85 0.55 0.85 1.40 0.30 (inch) 0.033 0.022 0.033
C D A E
0.055
B
0.118
Standard Package
Qty per Reel Case Type (Pcs) ER/0503 5000 Reel Size (inch) 7
REV:B
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Page 4
Comchip Technology CO., LTD.

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