®
BAT54, A, C, S
SMALL SIGNAL SCHOTTKY DIODE
FEATURES AND BENE FITS
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSES
LOW FORWARD V O LTAGE DROP
SURFACE MOUNT DEVICE
DESCRIPTION
Schottky barrier diodes encapsulated in a SOT-23
small SMD packages.
Double diodes with different pining are available.
K
A
BAT54
K
A1
A2
BAT54C
Nc
A1
A2
A
A
K
K1
K2
BAT54A
A1
K
K2
K1
A2
BAT54S
SOT-23
ABSOLUTE RATINGS
(limiting values)
Symbol Parameter Value Unit
K1
A
K2
A2
A1
K2
K1
V
I
RRM
I
FSM
P
T
stg
Repetitive peak reverse voltage 30 V
Continuous forward current 0.3 A
F
Surge non repetitive forward current tp=10ms sinusoidal 1 A
Power dissipation (note 1) T
tot
= 25°C 250 mW
amb
Maximum storage temperature range - 65 to +150
Tj Maximum operating junction temperature * 150
T
Note 1:
dPtot
* :
dTj
June 1999 - Ed: 3A
Maximum temperature for soldering during 10s 260
L
for double diodes, Ptot is the total dissipation of both diodes.
<
1
Rth(j−a
thermal runaway condition for a diode on its own heatsink
)
°
C
°
C
°
C
1/5
BAT54, A, C, S
THERMAL RE SISTA NC E
Symbol Parameter Value Unit
R
th (j -a)
(*) Mounted on epoxy board with recommended pad layout.
Junction to ambient (*) 500
STATIC ELECTRICAL CHARACTE RISTICS
(per diode)
°
Symbol Parameters Tests conditions Min. Typ. Max. Unit
* Forward voltage drop Tj = 25°CI
V
F
** Reverse leakage current Tj = 25°CV
I
R
= 0.1 mA 240 mV
F
= 1 mA 320
I
F
= 10 mA 400
I
F
= 30 mA 500
I
F
= 100 mA 900
I
F
= 30 V 1
R
Tj = 100°C 100
Pulse test : * tp = 380 µs, δ < 2%
** tp = 5 ms, δ < 2%
DYNAMIC CHARACTERISTICS
(Tj = 25 °C)
C/W
µ
A
Symbol Parameters Tests conditions Min. Typ. Max. Unit
C J unction
Tj = 25°CV
= 1 V F = 1 MHz 10 pF
R
capacitance
t
Fig.1 :
average forward current.
PF(av)(W)
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.00 0.05 0.10 0.15 0.20 0.25 0.30
Revers e recovery
rr
time
IF = 10 mA IR = 10 mA Tj = 25°C
I
= 1 mA RL = 100
rr
Average forward power dissipation versus
δ = 0.1
δ = 0.05
δ = 0.2
IF(av) (A)
δ = 0.5
δ
δ = 1
T
=tp/T
5ns
Ω
Fig.2 :
Average forward current versus ambient
temperature ( δ = 1).
IF(av)(A)
0.35
0.30
0.25
0.20
0.15
0.10
tp
0.05
0.00
0 25 50 75 100 125 150
δ
=tp/T
T
tp
Tamb(°C)
2/5
BAT54, A, C, S
Fig.3 :
Non repetitive surge peak forward current
versus overload duration (maximum values).
IM(A)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
I
M
0.2
0.1
0.0
1E-3 1E-2 1E-1 1E+0
Fig.5 :
t
δ
=0.5
t(s)
Reverse leakage current versus reverse
Ta=25°C
Ta=50°C
Ta=100°C
voltage applied (typical values).
IR(µA)
1E+2
Tj=100°C
1E+1
Fig.4 :
Relative variation of thermal impedance
junction to ambient versus pulse duration (alumine
substrate 10mm x 8mm x 0.5mm).
Zth(j-a)/Rth(j-a)
1.00
δ = 0.5
δ = 0.2
δ = 0.1
0.10
δ
=tp/T
T
tp
Single pulse
tp(s)
0.01
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2
Fig.6 :
Reverse leakage current versus ju nct io n
temperature.
IR(µA)
1E+4
1E+3
1E+2
VR=30V
1E+0
1E-1
Tj=50°C
Tj=25°C
VR(V)
1E-2
0 5 10 15 20 25 30
Fig.7 :
Junction capacitance versus reverse
voltage applied (typical values).
C(pF)
10
F=1MHz
Tj=25°C
5
2
1
12 5102030
VR(V)
1E+1
1E+0
1E-1
Tj(°C)
1E-2
0 25 50 75 100 125 150
Fig.8 :
Forward voltage drop versus forward
current (typi cal values).
IFM(A)
5E-1
1E-1
Tj=100°C
1E-2
1E-3
1E-4
Tj=50°C
Tj=25°C
VFM(V)
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
3/5
BAT54, A, C, S
PACKAGE MECHANICAL DAT A
SOT-23
E
A
DIMENSIONS
REF.
e
B
e1
D
A 0.89 1.4 0.035 0.055
Millimeters Inches
Min. Max. Min. Max.
A1 0 0.1 0 0.004
B 0.3 0.51 0.012 0.02
S
A1
c 0.085 0.18 0.003 0.007
D 2.75 3.04 0.108 0.12
e 0.85 1.05 0.033 0.041
L
e1 1.7 2.1 0.067 0.083
E 1.2 1.6 0.047 0.063
H
H 2.1 2. 75 0.083 0.108
L 0.6 typ. 0.024 typ.
S 0.35 0.65 0.014 0.026
c
Ordering type Marking Package Weight Base qty Delivery mode
BAT54FILM D86 SOT-23 0.01g 3000 Tape & reel
BAT54AFILM D84 SOT- 23 0.01g 3000 Tape & reel
BAT54CFILM D87 SOT-23 0.01g 3000 Tape & reel
BAT54SFILM D88 SOT- 23 0.01g 3000 Tape & reel
Epoxy meets UL94,V0
4/5
BAT54, A, C, S
FOOTPRINT DIMENSI ON S
COMPATIBLE SOT-23 / SC-59
(in millimeters and inches)
0.9
0.035
1.9
0.075
2.35
0.92
1.45
0.037
0.9
0.035
1.1
0.9
0.035
0.043
1.1
0.043
mm
inch
OPTIMIZED SOT-23 FOOTP RINT DIMENSIONS
(in millimeters and inches)
2.35
0.92
0.9
0.035
2
0.079
1
0.040
0.9
0.035
1
0.9
0.035
0.040
1
0.040
mm
inch
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