ISP281E

Transistor, Photovoltaic Output Optoisolators Overview

The ISP281E is a single-channel optoisolator manufactured by Isocom Components 2004 LTD, featuring a transistor output. It provides high-voltage isolation with a rated voltage of 3750Vrms. The device operates within a temperature range of -55°C to 110°C and is housed in a 4-SOIC surface-mount package with a width of 4.40mm. Key electrical parameters include a maximum collector-emitter voltage of 80V, a DC forward current limit of 60mA, and a typical forward voltage of 1.2V. The output channel supports a maximum current of 50mA with a saturation voltage drop of up to 200mV. Current transfer ratios range from 50% to 600% at a forward current of 10mA, with typical rise and fall times of 5µs and 3µs respectively.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using infrared light transmission.
• Features a transistor output stage suitable for digital signal switching applications.
• Designed for robust performance across extended industrial temperature ranges.

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring signal isolation
• Power supply protection circuits
• Smart metering and utility instrumentation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (E) against the manufacturer's official datasheet to confirm pinout compatibility and packaging specifications. Ensure that the 4-SOP package dimensions match the target PCB footprint. Confirm RoHS compliance status if required by local regulations. Cross-reference the part number with authorized distributors to avoid counterfeit components. Validate that the isolation voltage rating meets the safety requirements of the final application environment.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single-channel transistor output isolator is required for moderate-speed digital signaling. The 3750Vrms isolation rating makes it suitable for general-purpose industrial isolation where high voltage separation is critical. Consider the 5µs/3µs switching speeds for applications not requiring ultra-fast response. The wide operating temperature range supports deployment in harsh environmental conditions without derating concerns.

Transistor, Photovoltaic Output Optoisolators Part Context

Isocom Components specializes in photovoltaic and optoelectronic devices, often serving as a source for legacy or alternative optical couplers. The ISP281E belongs to their standard transistor-output series, designed to replace older industry-standard parts. The company maintains manufacturing capabilities in Malaysia and testing facilities in the UK, ensuring adherence to global quality standards for commercial and industrial electronic components.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct substitutes such as the IS281 variant, which shares similar electrical characteristics but may differ in packaging or suffix designation. Verify pin-to-pin compatibility before substitution. Ensure that any replacement maintains the same isolation voltage and current transfer ratio specifications to guarantee circuit functionality.