Littelfuse Launches CPC1056N Compact Solid-State Relay

In response to the increasing need for quick, efficient, and space-saving switching solutions in next-generation electronics systems, Littelfuse unveiled the CPC1056N, a compact yet high-performance 60 V, 75 mA 1-Form-A solid-state relay (SSR).

The CPC1056N offers silent, maintenance-free operation and prevents EMI/RFI interference because to its solid-state design, which has no moving parts.

It provides quick switching speeds of 3 ms and great input-to-output isolation (1500 VRMS). With only 0.5 mA of ultra-low LED trigger current, it can be directly driven by low-power TTL or CMOS logic without the need for further hardware. 

Features and Benefits

• 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 t_on/t_off): Supports fast applications with minimal latency
• 1500 V_RMS 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

The CPC1056N is perfect for security, medical, industrial automation, smart meters, and EV charging infrastructure applications because it satisfies EN50130-4, UL 1577, and EN 62368-1 standards and is housed in a compact 4-pin SOP package.

Markets and Applications

• Security systems: PIR motion detectors, data signaling, sensor control
• Medical equipment: Patient and equipment isolation, low noise switching
• Industrial automation: Factory controls, multiplexers, and test equipment
• EV Charging infrastructure: Signal switching and relay logic in smart chargers in combination with Littelfuse protection solutions
• Smart utility meters: Control of electricity consumption, water flow, and gas flow
• Building automation and consumer electronics: Compact, efficient switching in smart appliances and control systems

Leadership Comments

“With the launch of the CPC1056N, we’re enabling our customers to simplify their designs without compromising performance and enabling the development of efficient, compact, and reliable electronic systems,” said Hugo Guzman, Product Marketing Manager at Littelfuse. “By combining fast switching, ultra-low input current, and robust isolation in a compact package, this solid-state relay addresses key challenges in space-constrained and energy-sensitive applications. It helps engineers reduce complexity, improve energy efficiency, and accelerate time to market across a wide range of industries, including security, industrial automation, and EV infrastructure.”

Availability

These solid-state relays are available in quantities of 100 per tube (CPC1056N) or 2,000 per reel (CPC1056NTR). Sample requests are accepted through authorized Littelfuse distributors worldwide.

For a listing of Littelfuse distributors, CLICK HERE.

To Know More About CPC1056N Solid-State Relays Product Page, CLICK HERE