1102
P&B
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
Sample Part Number SSRT -240 D
1. Basic Series:
2. Line Voltage:
3. Input Type & Voltage:
SSRT = “hockey puck” triac output solid state relay
10
4. Maximum Switching Rating:
240 = 24 - 280 VAC
A = 90 - 280 VAC linear
D = 3 - 32 VDC constant current
10 = .1 - 10A rms, mounted to heatsink
25 = .1 - 25A rms, mounted to heatsink
Ordering Information
File E29244
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that users also seek out the pertinent approvals files of
the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
Engineering Data
Form: 1 Form A (SPST-NO).
Duty: Continuous.
Isolation: 4000V rms minimum, input - output.
Capacitance: 8.0 pf typical (input to output).
Temperature Range:
Storage: –40°C to +100°C
Operating Temperature: –20°C to + 80°C
Case Material: Plastic, UL rated 94V-0.
Case and Mounting: Refer to outline dimension.
Termination: Refer to outline dimension.
Approximate Weight: 3.5 oz. (98g).
Features
• Standard “hockey puck” package.
• Enhanced noise immunity (designed to meet level 3 requirements of
European EMC Directive).
• LED indicator.
• Floating terminal design.
• Low cost snubberless triac outputs.
• 10A & 25A rms versions.
• AC & DC input versions.
• 4000V rms isolation.
Input Specifications
Our authorized distributors are more likely to maintain the following items in stock for immediate delivery.
SSRT-240A10
SSRT-240A25
SSRT-240D10
SSRT-240D25
Parameter
Control Voltage Range V
Must Release Voltage V (Min.)
Input Current (Max.)
AC Input/AC Output
90 - 280VAC
10VAC
90VAC
8.5mA
3 - 32VDC
3VDC
1VDC
14mA
DC Input/AC Output
Must Operate Voltage V (Max.)
IN
IN(OP)
IN(REL)
SSRT series
“Hockey Puck”
Solid State Relay With
Snubberless Triac Output
1103
P&B
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
Operating Diagrams
ZERO
VOLTAGE
CIRCUIT
EQUIVALENT CIRCUIT ONLY
CONSTANT
CURRENT
DC INPUT
-4
+3
1
2
OUTPUT
ZERO
VOLTAGE
CIRCUIT
EQUIVALENT CIRCUIT ONLY
AC INPUT
4
3
1
2
OUTPUT
+
Outline Dimensions
1.750
(44.45)
.785
(19.94)
.250
(6.35)
1.100
(27.94)
.470
(11.9)
2.250
(57.15)
1.850
(47.0)1.700
(43.18)
1.000
(25.4)
.875
(22.23)
.870
(22.1)
LED INDICATOR
Output Specification (@ 25°C, unless otherwise specified)
Electrical Characteristics (Thermal Derating Curves)
*See Derating Curves
Parameter Conditions Units
Load Voltage Range V
Repetitive Blocking Voltage (Min.)
Thermal Resistance, Junction to Case
(R ) (Max.)
I t Rating A Sec.
V rms
° C/W
V/µs
ms
ms
Turn-Off Time (Max.)
I = Max.
θ
2
Turn-On Time (Max.)
L
L
24 - 280
0.5 - 1.0
SSRT-240A10
& SSRT-240D10
SSRT-240A25
& SSRT-240D25
Single Cycle Surge Current (Min.)
Load Current Range I *
Leakage Current (Off-State) (Max.)
Static dv/dt (Off-State) (Min.)
Load Power Factor Rating
L
t = 8.3 ms 2
f = 60 Hz.
f = 60 Hz.
I = Max.
L
f = 60 Hz. V = Nom.
(120 or 240 V rms)
V peak
A rms
A peak
mA rms
On-State Voltage Drop (Max.) V peak
500
.1
8.3 for DC input types, 20 for AC input types
100 250
.1 - 10 .1 - 25
+
-600
8.3 for DC input types, 30 for AC input types
41 240
L
2.2 1.7
j-c
Resistive
1.5 1.3
Heatsink Recommendations
• We recommend that solid state relay modules be mounted to a heatsink sufficient to maintain the module’s base temperature at less than 85°C
under worst case ambient temperature and load conditions.
• The heatsink mounting surface should be a smooth (30-40 micro-inch finish), flat (30-40 micro-inch flatness across mating area), un-painted surface
which is clean and free of oxidation.
• An even coating of thermal compound (Dow Corning DC340 or equivalent) should be applied to both the heatsink and module mounting surfaces
and spread to a uniform depth of .002” to eliminate all air pockets.
• The module should be mounted to the heatsink using two#10 screws.
10A Units 25A Units
