October 2017
DocID17696 Rev 3
1/11
This is information on a product in full production.
www.st.com
BAT54-Y
Automotive small signal Schottky diodes
Datasheet - production data
Features
AEC-Q101 qualified
Low conduction and reverse losses
Negligible switching losses
Low forward and reverse recovery times
Extremely fast switching
Surface mount device
Low capacitance diode
PPAP capable
ECOPACK®2 compliant component
Description
The BAT54 series use the 40 V Schottky barrier
diodes packaged in SOT-23 and SOT-323.
These devices are suitable for automotive
applications.
Table 1: Device summary
Symbol
IF
300 mA
VRRM
40 V
C (typ.)
7 pF
Tj(max.)
150 °C
BAT54WFILMY
(single)
BAT54CWFILMY
(common cathode)
BAT54AWFILMY
(common anode)
SOT-323
Configurations in top view
SOT-23
BAT54FILMY
(single)
BAT54SFILMY
(series)
BAT54SWFILMY
(series)
Characteristics
BAT54-Y
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1 Characteristics
Table 2: Absolute ratings (limiting values at 25 °C, unless otherwise specified)
Symbol
Parameter
Value
Unit
VRRM
Repetitive peak reverse voltage
40
V
IF
Continuous forward current
300
mA
IFSM
Surge non repetitive forward current
tp = 10 ms sinusoidal
1
A
Tstg
Storage temperature range
-65 to +150
°C
Tj
Operating junction temperature range(1)
-40 to +150
°C
TL
Maximum soldering temperature
260
°C
Notes:
(1)(dPtot/dTj) < (1/Rth(j-a)) condition to avoid thermal runaway for a diode on its own heatsink.
Table 3: Thermal parameters
Symbol
Parameter
Value
Unit
Rth(j-a)
Junction to ambient(1)
SOT-23
500
°C/W
SOT-323
550
Notes:
(1)Epoxy printed circuit board with recommended pad layout
Table 4: Static electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
IR(1)
Reverse leakage current
Tj = 25 °C
VR = 30 V
-
-
1
µA
Tj = 100 °C
-
-
100
VF(2)
Forward voltage drop
Tj = 25 °C
IF = 0.1 mA
-
-
240
mV
IF = 1 mA
-
-
320
IF = 10 mA
-
-
400
IF = 30 mA
-
-
500
IF = 100 mA
-
-
900
Notes:
(1)Pulse test: tp = 5 ms, δ < 2 %
(2)Pulse test: tp = 380 µs, δ < 2%
Table 5: Dynamic characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
C
Diode capacitance
VR = 1 V, F = 1 MHz
-
7
10
pF
trr
Reverse recovery time
IF = 10 mA, IR = 10 mA, Tj = 25 °C
Irr = 1 mA, RL = 100 Ω
-
5
ns
BAT54-Y
Characteristics
DocID17696 Rev 3
3/11
1.1 Characteristics (curves)
Figure 1: Average forward power dissipation
versus average forward current
Figure 2: Average forward current versus ambient
temperature (δ = 1)
Figure 3: Reverse leakage current versus reverse
applied voltage (typical values)
Figure 4: Reverse leakage current versus junction
temperature
Figure 5: Junction capacitance versus reverse
applied voltage (typical values)
Figure 6: Forward voltage drop versus forward
current (typical values)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35
IF(AV)(A)
P(W)
δ= 0.05 δ= 0.2 δ= 0.1 δ= 0.5 δ= 1
T
δ= tp/T tp
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0 25 50 75 100 125 150
Tamb(°C)
IF(AV)(A)
T
δ=tp/T tp
1.E-02
1.E-01
1.E+00
1.E+01
1.E+02
0 5 10 15 20 25 30
VR(V)
IR(µA)
Tj= 100 °C
Tj= 25 °C
Tj= 50 °C
1.E-01
1.E+00
1.E+01
1.E+02
1.E+03
1.E+04
0 25 50 75 100 125 150
Tj(°C)
IR[Tj] / IR[Tj=25°C]
VR= 3V
1
10
1 10 100
VR(V)
C(pF)
F = 1 MHz
VOSC = 30 mVRMS
Tj= 25 °C
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3
VFM(V)
IFM(A)
Tj= 50 °C
Tj= 25 °C
Tj= -40 °C
Tj= 100 °C
Characteristics
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DocID17696 Rev 3
1.E-02
1.E-01
1.E+00
1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02
tP(s)
Zth(j-a)/Rth(j-a)
Alumine substrate
10 x 8 x 0.5 mm
Single pulse
SOT23
Figure 7: Relative variation of thermal impedance junction to ambient versus pulse duration
(SOT-23)
BAT54-Y
Package information
DocID17696 Rev 3
5/11
2 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Epoxy meets UL94, V0
Lead-free packages
2.1 SOT23 package information
Figure 8: SOT23-3L package outline
Package information
BAT54-Y
6/11
DocID17696 Rev 3
Table 6: SOT23-3L mechanical data
Dim.
mm
Min.
Typ.
Max.
A
0.89
1.40
A1
0
0.10
B
0.30
0.51
C
0.085
0.18
D
2.75
3.04
e
0.85
1.05
e1
1.70
2.10
E
1.20
1.75
H
2.10
3.00
L
0.60
S
0.35
0.65
L1
0.25
0.55
a
0°
8°
Figure 9: SOT23-3L recommended footprint
Dimensions are in mm.
BAT54-Y
Package information
DocID17696 Rev 3
7/11
2.2 SOT323-3L package information
Figure 10: SOT323-3L package outline
Package information
BAT54-Y
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DocID17696 Rev 3
0.95
(0.037)
1.0
(0.039) 2.9
(0.114)
0.50
(0.019)
0.8
(0.031)
Table 7: SOT323-3L package mechanical data
Ref.
Dimensions
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.8
1.1
0.031
0.043
A1
0.0
0.1
0.000
0.003
b
0.25
0.4
0.0098
0.0157
c
0.1
0.26
0.003
0.0102
D
1.8
2.0
2.2
0.070
0.078
0.086
E
1.15
1.25
1.35
0.0452
0.0492
0.0531
e
0.60
0.65
0.70
0.024
0.026
0.028
H
1.8
2.1
2.4
0.070
0.082
0.094
L
0.1
0.2
0.30
0.004
0.008
0.012
ϴ
0
30°
0
30°
Figure 11: SOT323-3L recommended footprint in mm (dimensions in inches)
BAT54-Y
Ordering information
DocID17696 Rev 3
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3 Ordering information
Figure 12: Ordering information scheme
Table 8: Ordering information
Order code
Marking
Package
Weight
Base qty.
Delivery mode
BAT54FILMY
86Y
SOT-23 single
10 mg
3000
Tape and reel
BAT54SFILMY
88Y
SOT-23 serial
BAT54WFILMY
73Y
SOT-323 single
6 mg
BAT54CWFILMY
77Y
SOT-323 common cathode
BAT54AWFILMY
74Y
SOT-323 common anode
BAT54SWFILMY
78Y
SOT-323 serial
BAT54 xx xx FILM Y
Signal Schottky diodes
Package
Packing
V = 40V
RRM
No letter = Single diode
A = Common anode
C = Common cathode
S = Series diodes
Blank = SOT-23
W = SOT-323
FILM = Tape and reel
Configuration
Automotive grade
Revision history
BAT54-Y
10/11
DocID17696 Rev 3
4 Revision history
Table 9: Document revision history
Date
Revision
Changes
04-Nov-2011
1
Initial release.
06-Jul-2017
2
Added BAT54SWFILMY.
Minor text changes to improve readability.
05-Oct-2017
3
Updated Table 4: "Static electrical characteristics".
BAT54-Y
DocID17696 Rev 3
11/11
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