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Low VF SMD Schottky Barrier Rectifiers
Reverse Voltage: 20 to 40 Volts Forward Current: 1.0 Amp RoHS Device
Features
-Halogen free. -Ideal for surface mount applications. -Easy pick and place. -Plastic package has Underwriters Lab. flammability classification 94V-0. -Exceeds environmental standard MIL-S19500/228. -Low leakage current.
Mini SMA
0.154(3.9) 0.138(3.5)
COMCHIP
SMD Diodes Specialist
CDBM120L-HF Thru. CDBM140L-HF
0.012(0.3) Typ.
0.071(1.8) 0.055(1.4)
Mechanical data
-Case: Mini SMA/SOD-123, molded plastic. -Terminals: solderable per MIL-STD-750, method 2026. -Polarity: Color band denotes cathode end.
0.035(0.9) Typ.
0.110(2.8) 0.094(2.4)
0.067(1.7) 0.051(1.3)
0.035(0.9) Typ.
Dimensions in inches and (millimeter)
-Approx. weight: 0.027 grams
Maximum Ratings and Electrical Characteristics
Parameter Max. repetitive peak reverse voltage Max. DC blocking voltage Max. RMS voltage Peak surge forward current, 8.3ms single half sine-wave superimposed on rate load (JEDEC method) Max. average forward current Max. instantaneous forward 1.0A voltage at Symbol VRRM VDC VRMS CDBM120L-HF 20 20 14 CDBM140L-HF 40 40 28 Units V V V
IFSM
30
A
IO VF 0.38
1.0 0.40 1.0 10 42 20 125 -55 to +150
O
A V
Max. DC reverse current at TA=25 rated DC blocking voltage TA=100 Max. thermal resistance (Note 1) Max. operating junction temperature Storage temperature
O
O
C C
IR RJA RJL TJ TSTG
mA
C/W
O
C C
O
2 Notes: 1. Thermal resistance from junction to ambient and junction to lead, P.C.B. mounted on 0.2x0.2 inch copper pad area.
REV:A
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Page 1
Comchip Technology CO., LTD.
Low VF SMD Schottky Barrier Rectifiers
COMCHIP
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDBM120L-HF thru CDBM140L-HF)
Fig.1 Reverse Characteristics
100 100
Fig.2 Forward Characteristics
CDBM120L-G
R e v e r s e C u r rent(m A)
10
10
F o r w a rd C u rren t (A)
CDBM140L-G
1
TJ=75 C
O
1
0.1
TJ=25 C
O
0.1
0.01 0 40 80 120 160 200
0.01 0 0.4 0.8 1.2 1.6 2.0
Percent of Rated Peak Reverse Voltage (%)
Forward Voltage (V)
Fig.3 Junction Capacitance
350
TJ=25 OC f=1MHz and applied 4VDC reverse voltage
Fig.4 Current Derating Curve
1.4 1.2 1.0
250 200 150 100 50 0 0.01
Averag e For ward C urre nt (A)
300
J u n c ti o n C apacian ce(p F ) t
0.8 0.6 0.4 0.2
0 0.1 1 10 100 0 25 50 75 100 125
O
150
175
Reverse Voltage (V)
Ambient Temperature (
C)
Fig.5 Non-repetitive Forward Surge Current
36
TJ=25 C 8.3ms single half sine wave, JEDEC method
O
P e a k F o r w a r d S u r g e Cur r e n t (A )
30
24
18
12
6
0 1 10 100
Number of Cycles at 60Hz
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Comchip Technology CO., LTD.
Low VF SMD Schottky Barrier Rectifiers
Reel Taping Specification
P0 P1 d Index hole E T
COMCHIP
SMD Diodes Specialist
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
1.90 0.10
0.075 0.04
B
3.90 0.10
0.153 0.04
C
1.68 0.10
0.066 0.04
d
1.50 0.10
0.059 0.004
D
178 2.00
7.00 0.079
D1
62.0 MIN.
2.440 MIN.
D2
13.0 0.50
0.512 0.020
Mini-SMA/SOD-123
(mm) (inch)
SYMBOL
E
1.75 0.10
0.689 0.004
F
3.50 0.10
0.138 0.004
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
0.23 0.10
0.009 0.004
W
8.00 0.30
0.315 0.011
W1
11.4 0.10
0.449 0.004
Mini-SMA/SOD-123
(mm) (inch)
REV:A
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Comchip Technology CO., LTD.
Low VF SMD Schottky Barrier Rectifiers
Marking Code
Part Number CDBM120L-HF CDBM140L-HF Marking Code L2 L4
COMCHIP
SMD Diodes Specialist
XX
XX = Product type marking code
Suggested PAD Layout
Mini-SMA/SOD-123 SIZE (mm) A B C D E 3.30 1.40 1.90 4.70 1.90 (inch) 0.130 0.055 0.075
D A E
C
0.185 0.075
B
Standard Package
Qty per Reel Case Type (Pcs) Mini-SMA/SOD-123 2500 Reel Size (inch) 7
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Comchip Technology CO., LTD.

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