LH1298
HIGH VOLTAGE, SOLID STATE RELAY
OPTOCOUPLER
FEATURES
鈥?Normally Closed, Single Pole Single Throw
Operation
鈥?Control 350 VAC or DC Voltage
鈥?Switch 100 mA Loads
鈥?LED Control Current, 1.5 mA
鈥?Low ON-Resistance
鈥?dv/dt, >500 V/ms
鈥?Isolation Test Voltage, 3750 VAC
RMS
鈥?Current Limiting
鈥?Underwriters Lab File # E52744
APPLICATIONS
鈥?Telephone Switch Hook
鈥?High Voltage Test Equipment
鈥?TRIAC Driver
鈥?Motor Control
鈥?Industrial Control Systems
DESCRIPTION
The LH1298 is a single pole single throw (SPST), nor-
mally closed (NC), solid state relay. The relay can con-
trol AC or DC loads currents up to 100 mA, with a
supply voltage up to 350 V. The device is packaged in
a six pin 0.3 inch dual-in line package. This package
offers an insulation dielectric withstand of 3750
VAC
RMS
.
The coupler consists of a AlGaAs LED that is optically
coupled to a dielectrically isolated monolithic inte-
grated circuit. The IC chip consists of a photodiode
array, control circuitry and high voltage DMOS transis-
tors. The typical ON resistance between the output
terminals is 30
鈩?/div>
at 0 mA LED current. The switch
offers low off-state leakage current at LED current of
5 mA or greater. There is on board output current limit-
ing circuitry.
Maximum Ratings
Terminal Voltage .................................................. 350 V
Terminal Current ............................................... 100 mA
LED Forward Current.......................................... 60 mA
LED Reverse Current............................................ 6 mA
Isolation Test Voltage.............................. 3750 VAC
RMS
Isolation Resistance
V
IO
=500 V, T
A
=25
擄
C ....................................
鈮?/div>
10
12
鈩?/div>
V
IO
=500 V, T
A
=100
擄
C ...................................
鈮?/div>
10
11 W
Operating Temperature Range................ 鈥?0 to +85
擄
C
Storage Temperature Range ................. 鈥?0 to +150
擄
C
Lead Soldering Temperature
at 260
擄
C, 2 mm from case.............................. 5 sec.
Package Dimensions in Inches (mm)
Pin One ID.
3
.248 (6.30)
.256 (6.50)
4
5
6
NC
2
1
A
K
1
2
6
5
S
NC
3
4
.335 (8.50)
.343 (8.70)
.039
(1.00)
Min.
4擄
Typ.
.018 (0.45)
.022 (0.55)
S'
.300 (7.62)
Typ.
.130 (3.30)
.150 (3.81)
18擄 Typ.
.020 (.051) Min.
.031 (0.80)
.035 (0.90)
.100 (2.54) Typ.
.010 (.25)
.014 (.35)
.300 (7.62)
.347 (8.82)
.110 (2.79)
.150 (3.81)
Characteristics
(T
A
=25
擄
C)
Emitter
Forward
Voltage
V
F
Temperature
Coefficient
Reverse
Current
Junction
Capacitance
Dynamic
Resistance
Switching Time
Detector
Output Break-
down Voltage
VB
350
0.1
0.1
Terminal
Capacitance
Current Limit
Package
LED Forward
Current,
Turn-Off
ON-resistance
Turn-on Time
Turn-off Time
I
Ft
h
1.5
2.5
mA
V
L
=
鹵
300 V,
T
A
=25
擄
C
I
T
=
鹵
25 mA,
I
F
=0 mA
I
F
=5 mA,
V
L
=50 V,
R
L
=1 k
鈩?/div>
C
T
24
150
1
5
V
碌
A
碌
A
pF
mA
I
B
=50
碌
A
V
T
=100 V,
I
F
=5 mA
V
T
=300 V,
I
F
=2.5 mA
V
T
=0,
f= MHz
Sym
V
F
鈭?/div>
V
F
/
鈭?/div>
T
A
I
R
C
J
鈭?/div>
V
F
/
鈭?/div>
I
F
t
R
, t
F
Min.
Typ.
1.25
鈥?.2
1
15
6
1
10
Max.
1.5
Units
V
mV/
擄
C
碌
A
pF
W
碌
s
V
R
=6 V
V
R
=0 V
f=1 MHz
I
F
=10 mA
I
F
=10 mA
Condition
I
F
=10 mA
Output OFF-State I
T(OFF)
Leakage Current
R
ON
T
ON
T
OFF
20
30
50
3
2
W
ms
ms
5鈥?01
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