Surface Mount Schottky Barrier Diodes
*Extremely Fast Switching Speed
*Low Forward Voltage
*Very Small Conduction Losses
*Schottky Barrier Diodes Encapsulated in a SOT-323 Package
Description:
These schottky barrier diodes are designed for high speed
switching applications circuit protection, and voltage clamping,
Extremely low forward voltage reduces conduction loss,
Miniature surface mount package is excellent for hand held and
portable applications where space is limited.
Features:
WEITRON
BAT54W/BAT54CW
BAT54AW/BAT54SW
SMALL SIGNAL
SCHOTTKY DIODES
200m AMPERES
30 VOLTS
hpp://www.weitron.com.tw
SOT-323(SC-70)
Unit:mm
SOT-323 Outline Demensions
1
2
3
A
B
D
E
G
M
L
H
J
T OP VIE W
K
C
Dim
A
B
C
D
E
G
H
J
K
L
M
Min
0.30
1.15
2.00
-
0.30
1.20
1.80
0.00
0.80
0.42
0.10
Max
0.40
1.35
2.40
0.65
0.40
1.40
2.20
0.10
1.00
0.53
0.25
SOT-323
*Lead(Pb)-Free
1/3
29-Jul-05
WEITRON
WEITRON
BAT54W/BAT54CW
BAT54AW/BAT54SW
Maximum Ratings
(TJ=125 C Unless otherwise noted)
Characteristic
Reverse Voltage
Average Rectifier
Forward Current
Peak Repetitive
Forward Current
Rated VR, Square Wave,20KHz
Operating Junction
Temperature Range
Storage Temperature Range
Symbol
VR
IF(AV)
IFRM
IFSM
TJ
Tstg
BAT54W/CW/AW/SW
Unit
30
200
300
-55 to +125
-55 to +150
Volts
mA
mA
mA
C
C
Device Marking
Item
Marking
Eqivalent Circuit diagram
1
3
1
2
3
1
2
3
BAT54W
BAT54CW
BAT54AW
BAT54SW
B4 , KL5
L3 , KL7
B6 , B7 , KL6
B8 , KL8
1
2
3
Electrical Characteristics
(TA=25 C Unless otherwise noted)
Characteristic
Symbol
Reverse Breakdown Voltage (IR=10A)
Forward Voltage
IF=0.1mA
IF=1.0mA
IF=10mA
IF=30mA
IF=100mA
Total Capacitance
(VR=1.0V, f=1.0MHz)
Reverse Leakage
Reverse Recover Time
(IF=IR =10mA, IR(Rec)=1.0mA)
V(BR)R
VF
CT
IR
Trr
Min
Typ
Max
Unit
30
0.22
0.29
0.35
0.41
0.52
0.24
0.32
0.40
0.50
1.00
7.6
0.5
10
2.0
5.0
Volts
Volts
F
P
Adc
nS
http://www.weitron.com.tw
Non-Repetitive
Forward Current(t 1.0s)
600
(VR=25V)
2/3
29-Jul-05
FIG.1 Recovery Time Equivalent Test Circuit
WEITRON
BAT54W/BAT54CW
BAT54AW/BAT54SW
0
5
10
15
20
25
30
14
12
10
8
6
4
2
0
V
R
,REVERSE VOLTAGE (V)
C
T
,T
OT
AL
CAP
ACIT
ANCE (
pF)
FIG.4 Toral Capacitance
http://www.weitron.com.tw
V
R
,REVERSE VOLTAGE (V)
I R
, REVERSE CURRENT
(A)
FIG.3 Leakage Current
0
5
10
15
20
25
30
1000
100
10
1.0
0.1
0.01
0.001
TA=150 C
TA=125 C
TA=85 C
TA=25 C
0.0
0.1
0.2
0.3
0.4
0.5
0.6
100
10
1.0
0.1
150 C
25 C
-40 C
-55 C
85 C
125 C
V
F
, FORWARD VOLTAGE (V)
I F
, FOR
W
ARD CURRENT
(mA)
FIG.2 Forward Voltage
+10V
820
2.0K
100 H
0.1F
50 OUTPUT
PULSE
GENERATOR
50 INPUT
SAMPLING
OSCILLOSCOPE
IF
D.U.T.
0.1F
VR
INPUT SIGNAL
tr
tp
10%
90%
t
IF
IR
trr
t
IR(REC)=1.0mA
OUTPUT PULSE
(IF=IR=10mA, MEASURED
AT IR(REC)=1.0mA
Notes:1. A 2.0 k variable resistor for a Forward Current (IF) 0f 10 mA
2. Input pules is adjusted so IR(peak) is equal to 10 mA
3. tp trr
WEITRON
3/3
29-Jul-05
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