P240D4-17 OPTO 22, P240D4-17 Datasheet - Page 15
![SSR, PCB MOUNT, 280VAC, 24VDC, 4A](/photos/19/32/193285/4287106_sml.jpg)
P240D4-17
Manufacturer Part Number
P240D4-17
Description
SSR, PCB MOUNT, 280VAC, 24VDC, 4A
Manufacturer
OPTO 22
Datasheet
1.120A10.pdf
(23 pages)
Specifications of P240D4-17
Control Voltage Type
DC
Input Voltage
3VDC To 24VDC
Load Current
4A
Load Voltage Range
24VAC To 280VAC
Switching Mode
Zero Cross
Relay Terminals
Through Hole
Relay Mounting
PCB
Load Voltage Max
280VAC
Rohs Compliant
Yes
Control Voltage Max
32V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P240D4-17 3-32VDC
Manufacturer:
YUYUKOREA
Quantity:
5 400
Applications: Tips
Heat Sink Calculation
Like all semiconductor devices, SSR current ratings must be based on maximum internal junction temperature. All Opto 22 SSRs
operate conservatively at maximum internal junction temperatures of 110 °C. Use the equation below to calculate the maximum
allowable heat sink thermal resistance for your application. It is good engineering practice to provide a margin for error instead of
running the application right at the limits. If your application is near the thermal limit, it can be helpful to add a fan to move air
across the heat sink.
IMPORTANT: Thermally conductive grease must be used between the relay base and the heat sink.
Sample Calculation 1
120-volt, 20-amp load; 50 °C ambient air temperature
Model: 120D25 SSR.
See the last two columns of the table on
the bottom of the table.
Dissipation: 1.3 watts/amp
Thermal resistance: 1.2 °C/watt
Maximum junction temperature: 110 °C
The calculation would be as follows:
© 2006–2011 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Solid-State Relays
800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com •
page 4
for thermal resistance and dissipation values for the 120D25. Also, see the note at
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
This calculation indicates that you
should select a heat sink with a thermal
resistance of less than 1.1 °C/watt.
800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
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