Littelfuse, Inc., an industrial technology manufacturing company, has introduced the CPC1056N, a compact 60 V, 75 mA 1-Form-A solid-state relay (SSR) designed for fast, efficient, and space-conscious switching in electronics.
As electric vehicles (EV) systems continue to incorporate more low-power signal paths, isolation components, and solid-state control elements, devices like the CPC1056N offer engineers a small-footprint option for managing logic-level switching in charging hardware and auxiliary EV subsystems.
Featuring a solid-state architecture with no mechanical contacts, the CPC1056N provides silent operation and avoids EMI/RFI typically associated with electromechanical relays.
It delivers 1500 VRMS input-to-output isolation, 3 ms switching speeds, and an ultra-low 0.5 mA LED trigger current that enables direct drive from low-power TTL or CMOS logic.
The device is housed in a compact 4-pin SOP package and meets EN50130-4, UL 1577, and EN 62368-1 standards. Its combination of small size, low power requirements, and robust isolation makes it suitable for EV charging infrastructure, smart metering, industrial automation, and applications where low-power logic switching and galvanic isolation are necessary.
Features
- 60 V, 75 mA continuous load rating: Suitable for low-voltage signal and control circuits
- Low LED trigger current (0.5 mA): Allows direct interfacing with TTL/CMOS logic and low-power microcontrollers
- Fast switching (3 ms ton/toff): Supports fast applications with minimal latency
- 1500 VRMS input-to-output isolation: Provides basic galvanic isolation for sensitive systems
- Compact SOP-4 package: Saves valuable board space in dense designs
- Silent, solid-state operation: No mechanical wear or audible noise; avoids EMI/RFI
- Compliant with industry standards: Meets EN50130-4 (security), UL 1577, and EN 62368-1 for system safety and EMC
Filed Under: Charging, Power Electronics, Technology News