LESHAN RADIO COMPANY, LTD.
G211/3
MAXIMUM RATINGS(EACH DIODE)
Rating
Symbol
Va l u e
Unit
Peak Reverse Voltage
V
RM
75
Vdc
D.C Reverse Voltage LMBD2837LT1 V
R
30 Vdc
LMBD2838LT1 50
Peak Forward Current
I
FM
450
mAdc
300
Average Rectified Current
I
O
150
mAdc
100
THERMAL CHARACTERISTICS
Characteristic
Symbol
M a x
Unit
Total Device Dissipation FR 5 Board
(1)
P
D
225
mW
T
A
= 25C
Derate above 25C
1.8
mW/C
Thermal Resistance, Junction to Ambient
R
JA
556
C/W
Total Device Dissipation
P
D
300
mW
Alumina Substrate,
(2)
T
A
= 25C
Derate above 25C
2.4
mW/C
Thermal Resistance, Junction to Ambient
R
JA
417
C/W
Junction and Storage Temperature
T
J
, T
stg
55 to +150
C
DEVICE MARKING
LMBD2837LT1 = A5; LMBD2838LT1 = MA6
ELECTRICAL CHARACTERISTICS
(T
A
= 25C unless otherwise noted) ( EACH DIODE )
Characteristic
Symbol
Min
M a x
Unit
OFF CHARACTERISTICS
Reverse Breakdown Voltage(I
(BR)
= 100
Adc) LMBD2837LT1 V
(BR)
35 -- Vdc
LMBD2838LT1 75 --
Reverse Voltage Leakage Current
I
R
--
Adc
(V
R
= 30 Vdc) LMBD2837LT1 -- 0.1
(V
R
= 50 Vdc) LMBD2838LT1 0.1
Diode Capacitance
C
T
--
4.0
pF
(V
R
= 0 V, f = 1.0 MHz)
Forward Voltage(I
F
= 10 mAdc)
V
F
--
1.0
Vdc
(I
F
= 50 mAdc)
--
1.0
(I
F
= 100 mAdc)
--
1.2
Reverse Recovery Time(I
F
=I
R
=10mAdc,I
R(REC)
=1.0mAdc)(Figure 1) t
rr
--
4.0
ns
1. FR5 = 1.0 x 0.75 x 0.062 in.
2. Alumina = 0.4 x 0.3 x 0.024 in. 99.5% alumina.
Monolithic Dual Switching Diodes
3
CATHODE
ANODE
1
2
ANODE
1
3
2
SOT 23 (TO236AB)
LMBD283
7LT1
LMBD283
8LT1
FETURE
Pb-Free Package is available.
ORDERING INFORMATION
Device
Marking
Shipping
LMBD2837LT1 A5
3000/Tape&Reel
LMBD2837LT1G
A5(Pb-Free) 3000/Tape&Reel
LMBD2838LT1
MA6
3000/Tape&Reel
LMBD2838LT1G
MA6
(Pb-Free)
3000/Tape&Reel
LESHAN RADIO COMPANY, LTD.
G212/3
Notes: 1. A 2.0 k
variable resistor adjusted for a Forward Current (I
F
) of 10mA.
Notes:
2. Input pulse is adjusted so I
R(peak)
is equal to 10mA.
Notes:
3. t
p
t
rr
Figure 1. Recovery Time Equivalent Test Circuit
+10 V
2.0 k
820
100
H
0.1
F
DUT
0.1
F
50
OUTPUT
PULSE
GENERATOR
t
r
50
INPUT
SAMPLING
OSCILLOSCOPE
t
p
t
10%
90%
I
F
I
R
t
rr
t
i
R(REC)
= 1.0 mA
OUTPUT PULSE
(I
F
= I
R
= 10 mA; MEASURED
at i
R(REC)
= 1.0 mA)
INPUT SIGNAL
I
F
V
R
LMBD2837LT1 LMBD2838LT1
I
F
, FORWARD CURRENT (mA)
I
R
, REVERSE CURRENT (
A)
10
1.0
0.1
0.01
0.001
0
10
20
30
40
50
100
10
1.0
0.1
0.2
0.4
0.6
0.8
1.0
1.2
V
R
, REVERSE VOLTAGE (VOLTS)
Figure 3. Leakage Current
V
F
, FORWARD VOLTAGE (VOLTS)
Figure 2. Forward Voltage
T
A
= 40C
T
A
= 85C
T
A
= 25C
T
A
=125C
T
A
=150C
T
A
=85C
T
A
=55C
T
A
=25C
1.0
0.9
0.8
0.7
0.6
0
2.0
4.0
6.0
8.0
V
R
, REVERSE VOLTAGE (VOLTS)
Figure 4. Capacitance
C
D
, DIODE CAP
ACIT
ANCE (pF)
CURVES APPLICABLE TO EACH CATHODE
LESHAN RADIO COMPANY, LTD.
G213/3
D
J
K
L
A
C
B S
H
G
V
1
2
mm
inches
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
INCHES
MILLIMETERS
DIM
MIN
MAX
MIN
MAX
A
0.1102
0.1197
2.80
3.04
B
0.0472
0.0551
1.20
1.40
C
0.0350
0.0440
0.89
1.11
D
0.0150
0.0200
0.37
0.50
G
0.0701
0.0807
1.78
2.04
H
0.0005
0.0040
0.013
0.100
J
0.0034
0.0070
0.085
0.177
K
0.0140
0.0285
0.35
0.69
L
0.0350
0.0401
0.89
1.02
S
0.0830
0.1039
2.10
2.64
V
0.0177
0.0236
0.45
0.60
PIN 1. ANODE
2. NO CONNECTION
3. CATHODE
0.03
1
0.
8
SOT-23
3
LMBD2837LT1 LMBD2838LT1
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