IS121D

Transistor, Photovoltaic Output Optoisolators Overview

The IS121D is a single-channel optoisolator manufactured by Isocom Components 2004 LTD. It features a transistor output configuration housed in a Mini-Flat 4-pin SMD package. The device provides an isolation voltage of 3750Vrms and supports a maximum collector-emitter voltage of 80V on the output side. Typical switching characteristics include a rise time of 4µs and a fall time of 3µs. The input current transfer ratio reaches up to 600% at 5mA, with a maximum continuous forward current rating of 50mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes a compact surface-mount Mini-Flat package for space-constrained designs
• Features fast switching speeds suitable for digital signal transmission

Transistor, Photovoltaic Output Optoisolators Applications

• Digital signal isolation in microcontroller interfaces
• Gate drive isolation for power switching devices
• Signal transmission across isolated ground planes

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and variant selection. Confirm that the Mini-Flat 4-pin footprint matches your PCB layout requirements. Check for RoHS compliance status if required by your manufacturing standards. Ensure input current limits are respected during circuit design to maintain reliability.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a small form factor is required alongside high isolation voltage ratings. The transistor output type is appropriate for logic-level interfacing rather than analog signal transmission. Evaluate the 80V output voltage limit to ensure it meets the load requirements of the destination circuit. Consider the typical switching times for high-speed digital applications.

Transistor, Photovoltaic Output Optoisolators Part Context

This component belongs to the family of infrared optoelectronic devices produced by Isocom Components 2004 LTD. The company specializes in providing optocouplers for industrial and commercial electronic systems. The IS121D represents a standard solution for galvanic isolation needs where physical size and voltage withstand capability are primary design constraints.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Consult official substitution guides from Isocom Components or cross-reference databases for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence before replacing the original part. Ensure any substitute maintains the same Mini-Flat 4-pin package dimensions for direct board replacement.