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
Value
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
2/11
DocID17696 Rev 3
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
BAT54-Y
4/11
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
8/11
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
9/11
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
BAT54-Y
DocID17696 Rev 3
11/11
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST
products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the
design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2017 STMicroelectronics – All rights reserved
