KEC KDR731S Datasheet
2003. 2. 25 1/2
SEMICONDUCTOR
TECHNICAL DATA
KDR731S
SCHOTTKY BARRIER TYPE DIODE
(SERIES CONNECTION)
Revision No : 1
HIGH SPEED RECTIFICATION
(SWITCHING REGULATORS, CONVERTERS, CHOPPERS)
UNIVERSAL-USE RECTIFIERS.
FEATURES
Low Forward Voltage : VF max=0.55V
Fast reverse recovery time (trr max=10nS)
Low switching noise.
Low leakage current and high reliablility due to
Highly reliable planar structure.
Series connection of 2 elements in an SOT-23 package
facilitates high-density mounting and permits KDR731S
applied equipment to be made smaller.
MAXIMUM RATING (Ta=25 )
ELECTRICAL CHARACTERISTICS (Ta=25 )
CHARACTERISTIC SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Reverse Voltage
V
R
IR=20 A
30 - - V
Forward Voltage
V
F
IF=70mA
- - 0.55 V
Reverse Current
I
R
VR=15V
- - 5
A
Total Capacitance
C
T
VR=10V, f=1MHz
- 5.0 - pF
Reverse Recovery Time
t
rr
IR=IF=10mA
- - 10 nS
CHARACTERISTIC SYMBOL RATING UNIT
Repetitive (Peak) Reverse Voltage
V
RRM
30 V
Non-Repetitive (Peak)
Reverse Surge Voltage
V
RSM
35 V
Average Forward Current
I
O
70 mA
Surge Forward Current
I
FSM
2 A
Junction Temperature
T
j
125
Storage Temperature Range
T
stg
-55 125
E
B
LL
DIM
MILLIMETERS
_
+
2.93 0.20
1.30+0.20/-0.15
1.30 MAX
0.45+0.15/-0.05
2.40+0.30/-0.20
1.90
0.95
0.13+0.10/-0.05
0.00 ~ 0.10
0.55
0.20 MIN
1.00+0.20/-0.10
7
3
2
1
A
G
H
N
C
1. CATHODE 1
2. ANODE 2
3. ANODE 1 / CATHODE 2
2
1
3
PP
M
K
A
B
C
D
D
E
G
H
J
K
L
M
N
J
P
Marking
Type Name
SOT-23
Lot No.
UX
2003. 2. 25 2/2
KDR731S
Revision No : 1
300
100
F
30
10
3
Ta=125 C
Ta=75 C
1
FORWARD CURRENT I (mA)
0.3
0 0.1
0.2 0.3 0.4 0.5 0.6 0.7
FORWARD VOLTAGE V (V)
20
10
5
3
I - V
FF
Ta=25 C
Ta=-25 C
C - V
R
I - V
RR
1K
100
R
10
1
0.1
Ta=125 C
Ta=100 C
Ta=75 C
Ta=50 C
Ta=25 C
REVERSE CURRENT I (µA)
0.01
0
51015
F
REVERSE VOLTAGE V (V)
20 25 30 35
R
I - t
S
2.8
f=1MHz
S(peak)
2.4
2.0
1.6
Current
waveform
1s
20ms
50Hz sine
t
wave
1.2
0.8
1
INTERTERMINAL CAPACITANCE C (pF)
REVERSE VOLTAGE V (V)
t TEST CIRCUIT
rr
<
Duty 10%
=
50Ω
10µs
0.4
503010.5 103 5
R
100Ω
10Ω
SURGE FORWARD CURRENT I (A)
5V
0
0.01 0.03 0.1 10.3 3
TIME t (S)
10mA10mA
t
rr
1.0mA
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