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SP846
1 Form A
Solid State Relay
The SP846 is a bi-directional, single-pole, single-throw, normally open multipurpose relay. The circuit is composed of one LED on the
input side which activates an optically coupled IC on the output - controlling the firing angle of two back-to-back SCRs. This circuit
assures no false triggering under most adverse conditions, and a tight zero-volt window not exceeding 5V.
DESCRIPTION
FEATURES
APPLICATIONS
OPTIONS/SUFFIXES*
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS*
APPROVALS
Zero Volt Cross Switching
High Blocking Voltage (700V)
High Transient Immunity
1.2A maximum continuous current
Low input control current
High input-to-output isolation
Solid state reliability
Valve control
Solenoids
Home appliances
Metering equipment
Heating elements
Gas pump control circuitry
High Output Isolation
-H
Tape and Reel
-TR
NOTE: Suffixes listed above are not included in marking on
device for part number identification.
PARAMETER
UNIT
MIN
TYP
MAX
Storage Temperature
C
-55
120
Operating Temperature
C
-40
85
Continuous Input Current
mA
40
Transient Input Current
mA
400
Reverse Input Control
Voltage
V
6
Output Power Dissipation
W
1.2
*The values indicated are absolute stress ratings. Functional operation of the
device is not implied at these or any conditions in excess of those defined in
electrical characteristics section of this document. Exposure to Absolute
Ratings may cause permanent damage to the device and may adversely
affect reliability.
BABT CERTIFICATE #607837:
BS EN 60950, BS EN 41003, BS EN 60065
UL FILE #E90096
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 1 of 5
SP846
rev 1.40 (10/25/2004)
SP846
1 Form A
Solid State Relay
ELECTRICAL CHARACTERISTICS - 25C
PARAMETER
UNIT
MIN
TYP
MAX TEST CONDITIONS
INPUT SPECIFICATIONS
LED Forward Voltage
V
1.2
1.5
If = 10mA
LED Reverse Voltage
V
6
12
Ir = 10uA
Must Operate Current
m
2.5
5
Io = 1.2A, resistive load
A
Junction Capacitance
p
5
Vf = 0V
F
OUTPUT SPECIFICATIONS
Blocking Voltage
V
700
Io = 700uA
Continuous Load Current
A
1.2
If = 5mA
Surge Current Rating
A
10
T = 16ms
Holding Current
m
10
A
On-Voltage
V
1.2
Io = 1.2A
Voltage Across Load at Turn-On
V
5
If = 5mA
Leakage Current
100
250
Vo = 250V
A
Thermal Resistance
80
C /
Power Factor
0.3
Critical Rate of Rise (dV/dt)
V
400
/
s
COUPLED SPECIFICATIONS
Isolation Voltage
V
2500
T = 1 minute
-H Suffix
V
3750
T = 1 minute
Isolation Resistance
G
100
Coupled Capacitance
p
6
F
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 2 of 5
SP846
rev 1.40 (10/25/2004)
SP846
1 Form A
Solid State Relay
PERFORMANCE DATA
0
10
20
30
40
700 705 710 715 720 725 730 735
Blocking Voltage (V)
D
e
v
i
c
e
C
ount
SP846
Typical Blocking Voltage Distribution
N = 100, Ambient Temperature = 25C
0
500
1000
1500
-4
0
-2
0
0
20
40
60
80
Tem perature (C)
Loa
d
C
u
r
r
e
nt
(
m
A
)
SP846
Maximum Load Current vs. Temperature
5 V
Threshold
Input Signal
SCR #1 Turns On when
5V threshold is reached.
SCR #1 Turns Off,
SCR #2 Turns On
at Zero Volts.
SCR #2 Turns Off,
SCR #1 Turns On
at Zero Volts.
SCR #1 and Relay Turn
Off at Zero Volts.
5
4
2
6
3
1
Relay Input Signal is
Turned On.
Relay Input Signal is
Turned Off.
This solid state relay has been designed with a driver circuit that controls the operation of two back-to-back silicon controlled rectifiers
(SCRs), each responsible for one half of the AC cycle. If an AC signal is examined, the turn on, turn off and zero-volt switching can be seen.
Figure 1 shows a typical 60 Hz, 120Vac signal with a corresponding relay input signal:
ZERO-VOLT SWITCHING
Figure 1 shows the sequence of zero-volt switching operation. At Stage 1, an input signal is applied to the relay. The relay will not turn on
until the threshold voltage of 5V is reached. Once this point is reached (Stage 2), SCR #1 (designated as the SCR which controls positive
AC voltage) turns on. However, SCR #1 only conducts for an instant, as the cycle quickly crosses zero. At this point (Stage 3), SCR #1 will
turn off and SCR #2 (negative AC voltage) turns on. Likewise, at the next zero cross (Stage 4), SCR #2 will turn off and SCR #1 conducts
again. Even though the input signal is terminated at Stage 5, the relay will continue to conduct (typical SCR behavior) until Stage 6, when
SCR #1 crosses zero and ceases to conduct. Please note that turn on can likewise begin on the negative phase of the AC cycle with a -5V
threshold, though only the positive phase is shown here.
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 3 of 5
SP846
rev 1.40 (10/25/2004)
SP846
1 Form A
Solid State Relay
MECHANICAL DIMENSIONS
16 PIN SINGLE IN-LINE PACKAGE
END VIEW
SIDE VIEW
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 4 of 5
SP846
rev 1.40 (10/25/2004)
SP846
1 Form A
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