CDBAS340-HF

SMD Schottky Barrier Rectifiers
CDBAS340-HF
Reverse Voltage: 40 Volts
Forward Current: 3.0 Amp
RoHS Device
Halogen Free
SMA-S
Features
0.191(4.85)
0.173(4.40)
- High surge and current capability
0.045(1.15)
Typ.
- For use in low voltage, high frequency invertors
free wheeling and polarity protection
- Built-in strain relief
0.057(1.45)
0.051(1.30)
0.108(2.75)
0.096(2.45)
- Silicon epitaxial planar chips
- Metal silicon junction with guard ring
0.153(3.90)
0.132(3.35)
Mechanical data
0.048(1.20)
0.031(0.80)
- Epoxy: UL94-V0 rate flame retardant
0.043(1.10)
Typ.
- Case: Molded plastic, SMA-S
- Terminals: Solder plated solderable per
MIL-STD-750 method 2026
Dimensions in inches and (millimeter)
- Polarity: Color band denotes cathode end
Circuit diagram
- Mounting position: Any
- Weight: 0.045 grams(approx.)
Maximum Ratings and Electrical Characteristics (at T =25°C unless otherwise noted)
A
Symbol
Value
Unit
Maximum recurrent peak reverse voltage
VRRM
40
V
Maximum DC blocking voltage
VDC
40
V
Maximum RMS voltage
VRMS
28
V
VF
0.50
V
IF(AV)
3.0
A
IFSM
80
A
Parameter
Maximum forward voltage at 3.0A (note1)
Maximum average forward current
0.2 x0.2”(5.0x5.0mm) copper pad area, see Figure 1
Peak forward surge current
8.3ms single half sine-wave superimposed
on rate load (JEDEC method)
Maximum DC reverse current
at rated DC blocking voltage
TA=25°C
IR
0.1
mA
20
TA=100°C
Typical junction capacitance (note2)
CJ
250
PF
Junction to lead
RθJL
17
°C/W
Junction to Ambient
RθJA
55
°C/W
TJ
-55 to +125
°C
TSTG
-55 to +150
°C
Typical thermal resistance (note3)
Operating junction temperature range
Storage temperature range
Notes: 1. Pulse test: 300µS pulse width,1% duty cycle
2. Measured at 1.0MHz and applied reverse voltage of 4.0 volts
3. Thermal resistance from junction to ambient and from junction to lead P.C.B. mounted on 0.2x0.2”(5.0x5.0mm) copper pad areas.
Company reserves the right to improve product design , functions and reliability without notice.
REV: B
QW-JB062
Page 1
Comchip Technology CO., LTD.
SMD Schottky Barrier Rectifiers
RATING AND CHARACTERISTIC CURVES ( CDBAS340-HF )
Fig. 2 - Maximum Non-Repetitive Peak
Forward Surge Current
Fig. 1 - Forward Current Derating Curve
Peak Forward Surge Current, (A)
Average Forward Current, (A)
3.6
3.0
2.4
1.8
1.2
single phase half wave 60HZ
resistive or inductive load
0.6
100
10
TJ = 25°C
8.3ms single half sine-wave
(JEDEC Method)
1
0
0
25
50
75
100
125
150
Lead Temperature, (°C)
Number Of Cycles At 60Hz
Fig. 3 - Typical Instantaneous Forward
Characteristics
Fig. 4 - Typical Reverse Characteristics
100
1.0
0.1
TJ = 25°C
Pluse width 300us
1% duty cycle
Instantaneous Reverse Current, (mA)
10
Instantaneous Forward Current, (A)
100
10
175
10
1.0
0.1
0.01
0.001
0.01
0
0.2
0.4
0.6
0.8
1.0
Instantaneous Forward Voltage, (V)
0
20
40
60
80
100
120
140
Percent of Rated Peak Reverse Voltage, (%)
Fig. 5 - Typical Junction Capacitance
Junction Capacitance, (PF)
1000
100
10
0.1
1.0
10
100
Reverse Voltage, (V)
Company reserves the right to improve product design , functions and reliability without notice.
REV: B
QW-JB062
Page 2
Comchip Technology CO., LTD.
SMD Schottky Barrier Rectifiers
Reel Taping Specification
d
P0
P1
T
E
Index hole
F
W
B
P
C
A
12
o
0
D2
D1 D
W1
Trailer
Device
.......
.......
End
.......
.......
Leader
.......
.......
.......
.......
160mm (min)
Start
400mm (min)
Direction of Feed
SMA-S
SMA-S
SYMBOL
A
B
C
d
D
D1
D2
(mm)
2.85 ± 0.10
5.10 ± 0.10
1.25 ± 0.05
1.55 ± 0.05
178.00 ± 2.00
75.00 ± 2.00
13.00 ± 0.50
(inch)
0.112 ± 0.004
0.201 ± 0.004
0.049 ± 0.002
0.061 ± 0.002
7.008 ± 0.079
2.953 ± 0.079
0.512 ± 0.020
SYMBOL
E
F
P
P0
P1
T
W
W1
(mm)
1.75 ± 0.10
5.50 ± 0.05
4.00 ± 0.10
4.00 ± 0.10
2.00 ± 0.05
0.25 ± 0.05
12.00 ± 0.10
16.80 ± 4.00
(inch)
0.069 ± 0.004
0.217 ± 0.002
0.157 ± 0.004
0.157 ± 0.004
0.079 ± 0.002
0.010 ± 0.002
0.472 ± 0.004
0.661 ± 0.157
Company reserves the right to improve product design , functions and reliability without notice.
REV: B
QW-JB062
Page 3
Comchip Technology CO., LTD.
SMD Schottky Barrier Rectifiers
Marking Code
Part Number
Marking Code
CDBAS340-HF
34S
34S
= Cathod band
xxx = Product type marking code
Suggested PAD Layout
DO-214AC/SMA-S
D
SIZE
(mm)
(inch)
A
1.90
0.075
B
1.60
0.063
C
2.70
0.106
D
5.90
0.232
C
A
B
Standard Packaging
REEL PACK
Case Type
DO-214AC
(SMA-S)
REEL
Reel Size
( pcs )
(inch)
3,000
7
Company reserves the right to improve product design , functions and reliability without notice.
REV: B
QW-JB062
Page 4
Comchip Technology CO., LTD.
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