RV1S2251ACCSP-10YC#SC0

Overview

The RV1S2251ACCSP-10YC#SC0 is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It features an LSSOP-4 surface-mount package and provides 5000 Vrms isolation voltage. The device utilizes an NPN phototransistor output with a maximum collector-emitter voltage of 80 V and a maximum collector current of 30 mA. Key electrical parameters include a forward current of 30 mA, a forward voltage of 1.4 V, and a collector-emitter saturation voltage of 300 mV. The current transfer ratio ranges from 50% to 400%, with a typical rise time of 4 µs.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical transmission.
• Features a compact four-pin LSSOP surface-mount package for efficient PCB layout.
• Utilizes an NPN phototransistor output stage suitable for digital signal switching applications.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microcontrollers requiring galvanic separation
• Power supply feedback loops for noise immunity

Procurement Notes

Verify the specific suffix codes against official Renesas documentation to confirm exact packaging and compliance status. Ensure that the ordering information matches the required lead times and quality certifications. Cross-reference the manufacturer part number with authorized distributor catalogs to prevent counterfeit components. Confirm RoHS compliance details directly from the latest datasheet revision before procurement.

Selection Notes

Select this component when a low-cost, general-purpose optocoupler with moderate speed is required. The 5000 Vrms isolation rating supports standard industrial safety requirements. Consider the 4 µs rise time for applications not demanding high-speed data transmission. The NPN output configuration is compatible with standard logic families. Evaluate thermal dissipation capabilities within the LSSOP-4 package constraints for high-duty cycle operations.

Part Context

This component belongs to the Renesas RV series of optocouplers, which are designed for general-purpose isolation tasks. The RV1S2251 variant specifically targets applications requiring reliable transistor output switching with standard isolation levels. It serves as a fundamental building block for creating safe interfaces between low-voltage control electronics and higher-voltage power stages or noisy environments.

Replacement Considerations

Consult official Renesas substitution guides for verified equivalents. Generic replacements may differ in isolation voltage ratings or current transfer ratios. Verify pinout compatibility and package dimensions before integrating alternative parts into existing designs.

FAQ

What is the maximum isolation voltage of the RV1S2251ACCSP-10YC#SC0?

The device offers a maximum isolation voltage of 5000 Vrms between the input LED and the output phototransistor.

Does this optocoupler support AC input signals directly?

No, the internal LED requires direct current (DC) forward current to operate. AC signals must be rectified or driven appropriately to provide the necessary forward current.