BAT54J / W / AW / CW / SW
June 1999 - Ed: 2A
SMALL SIGNAL SCHOTTKY DIODE
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSES
LOW FORWARD VOLTAGE DROP
SURFACE MOUNT DEVICE
FEATURES AND BENEFITS
Schottky barrier diodes encapsulated either in
SOT-323 or SOD-323 small SMD packages.
Single and double diodes with different pining are
available.
DESCRIPTION
K
A
A
NC
NC
K
Symbol
Parameter
Value
Unit
V
RRM
Repetitive peak reverse voltage
30
V
I
F
Continuous forward current
0.3
A
I
FSM
Surge non repetitive forward current
tp=10ms sinusoidal
1
A
P
tot
Power dissipation (note 1)
Tamb = 25
C
SOD-323
230
mW
SOT-323
T
stg
Maximum storage temperature range
- 65 to +150
C
Tj
Maximum operating junction temperature *
150
C
T
L
Maximum temperature for soldering during 10s
260
C
Note 1: for double diodes, Ptot is the total dissipation of both diodes
ABSOLUTE RATINGS (limiting values)
BAT54W
A1
A1
A2
A2
K
K
BAT54CW
A1
K2
A2
K1
A2
K1
K2
A1
BAT54SW
* :
dPtot
dTj
<
1
Rth
(
j
-
a
)
thermal runaway condition for a diode on its own heatsink
K1
K1
K2
K2
A
A
BAT54AW
BAT54J
A
K
86
SOT-323
SOD-323
1/5
Symbol
Parameters
Tests conditions
Min.
Typ.
Max.
Unit
V
F
*
Forward voltage drop
Tj = 25
C
I
F
= 0.1 mA
240
mV
I
F
= 1 mA
320
I
F
= 10 mA
400
I
F
= 30 mA
500
I
F
= 100 mA
900
I
R
**
Reverse leakage current
Tj = 25
C
V
R
= 30 V
1
A
Tj = 100
C
100
Pulse test :
* tp = 380
s,
< 2%
** tp = 5 ms,
< 2%
STATIC ELECTRICAL CHARACTERISTICS (per diode)
Symbol
Parameters
Tests conditions
Min.
Typ.
Max.
Unit
C
Junction
capacitance
Tj = 25
C
V
R
= 1 V
F = 1 MHz
10
pF
t
rr
Reverse recovery
time
I
F
= 10 mA I
R
= 10 mA Tj = 25
C
I
rr
= 1 mA
R
L
= 100
5
ns
DYNAMIC CHARACTERISTICS (Tj = 25
C)
Symbol
Parameters
Value
Unit
R
th (j-a)
Junction to ambient (*)
SOD-323
550
C/W
SOT-323
C/W
(*) Mounted on epoxy board, with recommended pad layout.
THERMAL RESISTANCE
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
0.00E+0
2.00E-3
4.00E-3
6.00E-3
8.00E-3
1.00E-2
1.20E-2
1.40E-2
1.60E-2
1.80E-2
2.00E-2
VFM(V)
IFM(A)
Tj=100
C
Tj=50
C
Tj=25
C
Fig. 1-1: Forward voltage drop versus forward
current (typical values, low level).
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
1E-3
1E-2
1E-1
5E-1
VFM(V)
IFM(A)
Tj=100
C
Tj=50
C
Tj=25
C
Fig. 1-2: Forward voltage drop versus forward
current (typical values, high level).
BAT54J / W / AW / CW / SW
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0
5
10
15
20
25
30
35
40
45
50
300
350
400
450
500
550
600
S(Cu) (mm )
Rth(j-a) (
C/W)
P=0.2W
Fig. 6: Thermal resistance junction to ambient
versus copper surface under each lead (Epoxy
printedcircuit board FR4, copper thickness: 35
m
.)
0
5
10
15
20
25
30
1E-2
1E-1
1E+0
1E+1
1E+2
VR(V)
IR(
A)
Tj=50
C
Tj=25
C
Tj=100
C
Fig. 2: Reverse leakage current versus reverse
voltage applied (typical values).
0
25
50
75
100
125
150
1E-2
1E-1
1E+0
1E+1
1E+2
1E+3
1E+4
Tj(
C)
IR(
A)
VR=30V
Fig. 3: Reverse leakage current versus junction
temperature.
1
2
5
10
20
30
1
2
5
10
VR(V)
C(pF)
F=1MHz
Tj=25
C
Fig. 4: Junction capacitance versus reverse
voltage applied (typical values).
1E-3
1E-2
1E-1
1E+0
1E+1
1E+2
0.01
0.10
1.00
tp(s)
Zth(j-a)/Rth(j-a)
Single pulse
= 0.1
= 0.2
= 0.5
T
=tp/T
tp
Fig. 5: Relative variation of thermal impedance
junction to ambient versus pulse duration (epoxy
FR4 with recommended pad layout, e(Cu)=35
m)
BAT54J / W / AW / CW / SW
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PACKAGE MECHANICAL DATA
SOT-323
E
c
L
H
b
D
A
A1
e
REF.
DIMENSIONS
Millimeters
Inches
Min.
Typ. Max. Min.
Typ. Max.
A
0.8
1.1
0.031
0.043
A1
0.0
0.1
0.0
0.004
b
0.25
0.4
0.010
0.016
c
0.1
0.26 0.004
0.010
D
1.8
2.0
2.2
0.071 0.079 0.086
E
1.15
1.25
1.35 0.045 0.049 0.053
e
0.65
0.026
H
1.8
2.1
2.4
0.071 0.083 0.094
L
0.1
0.2
0.3
0.004 0.008 0.012
0
30
0
30
BAT54J / W / AW / CW / SW
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PACKAGE MECHANICAL DATA
SOD-323
H
b
D
E
A1
A
L
Q1
c
REF.
DIMENSIONS
Millimeters
Inches
Min.
Max.
Min.
Max.
A
1.17
0.046
A1
0
0.1
0
0.004
b
0.25
0.44
0.01
0.017
c
0.1
0.25
0.004
0.01
D
1.52
1.8
0.06
0.071
E
1.11
1.45
0.044
0.057
H
2.3
2.7
0.09
0.106
L
0.1
0.46
0.004
0.02
Q1
0.1
0.41
0.004
0.016
Ordering type
Marking
Package
Weight
Base qty
Delivery mode
BAT54W
D73
SOT-323
0.006g
3000
Tape & reel
BAT54AW
D74
SOT-323
0.006g
3000
Tape & reel
BAT54CW
D77
SOT-323
0.006g
3000
Tape & reel
BAT54SW
D78
SOT-323
0.006g
3000
Tape & reel
BAT54J
86
SOD-323
0.005g
3000
Tape & reel
Epoxy meets UL94,V0
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