Control Voltage Range
:
Product Type
: PCB Mount
Mounting Style
: SMD/SMT
Contact Form
: 1 Form A (SPST-NO)
Output Device
: MOSFET
Load Voltage Rating
: 350 V
Package / Case
: SMD-8
Load Current Rating
: 0.25 A
Features: • Dual Channel (LH1546)
• Current Limit Protection
• Isolation Test Voltage 5300 VRMS
• Typical RON 28
• Load Voltage 350 V
• Load Current 120 mA
• High Surge Capability
• Clean Bounce Free Switching
• Low Power Consumption
• SMD Lead Available on Tape and Reel
• Lead-free component
• Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC
ApplicationGeneral Telecom Switching
- On/off Hook Control
- Ring Relay
- Dial Pulse
- Ground Start
- Ground Fault Protection
InstrumentationSpecificationsAbsolute Maximum Ratings, Tamb = 25
Stresses in excess of the absolute Maximum Ratings can cause permanent damage to the device. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute Maximum Ratings for extended periods of time can adversely affect reliability.
| Parameter |
Test condition |
Symbol |
Value |
Unit |
| LED continuous forward current |
|
IF |
50 |
mA |
| LED reverse voltage |
IR 10 A |
VR |
8.0 |
V |
| DC or peak AC load voltage |
IL 50 A |
VL |
350 |
V |
Continuous DC load current -
one pole operating |
|
IL |
120 |
mA |
Continuous DC load current -
two pole operating |
|
IL |
250 |
mA |
| Peak load current (single shot) |
t = 100 ms |
IP |
1) |
mA |
| Ambient temperature range |
|
Tamb |
-40to+85 |
|
| Storage temperature range |
|
Tstg |
-40to+150 |
|
| Pin soldering temperature |
t = 100 max |
Ts |
260 |
|
| Input/output isolation voltage |
|
VISO |
5300 |
VRMS
|
Output power dissipation
(continuous) |
|
Pdiss |
550 |
mW |
1) Refer to Current Limit Performance Application Note for a discussion on relay operation during transient currents.
DescriptionThe LH1556AAC dual 1 Form A relays are SPST normally open switches that can replace electromechanical relays in many applications. They are constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology is comprised of a photodiode array, switch control circuitry, and MOSFET switches. In addition, the LH1556AAC SSRs employ current-limiting circuitry, enabling them to pass FCC 68.302 and other regulatory surge requirements when overvoltage protection is provided.
LH1556AAC Data Sheet
