IS181D

Transistor, Photovoltaic Output Optoisolators Overview

The IS181D is a single-channel optocoupler featuring an infrared LED and NPN silicon phototransistor. It utilizes surface mount technology in a 4-pin SMD Gull Wing package. Key electrical parameters include a maximum input current of 50 mA, a collector-emitter voltage of 80 V, and a typical rise time of 4 µs with a fall time of 3 µs. The device offers a minimum current transfer ratio of 300% at 5 mA and a maximum of 600%. It provides 3.75 kV isolation voltage and operates on DC input.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared light emitting diode with an NPN silicon phototransistor for signal transmission.
• Designed for high density mounting applications using a compact 4-pin surface mount package.
• Provides galvanic isolation between input and output circuits to protect sensitive components.

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in digital communication interfaces
• Switching applications requiring compact form factors
• General purpose optically coupled isolators

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix or tape-and-reel configuration against the manufacturer's datasheet to ensure compatibility with automated assembly processes. Confirm that the 3.75 kVrms isolation rating meets the safety requirements of the target application environment. Cross-reference the 4-SMD Gull Wing footprint dimensions with PCB layout specifications to prevent soldering defects during placement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-profile surface mount solution is required for single-channel isolation. The high current transfer ratio supports efficient switching with minimal drive current. Ensure the 80 V output voltage rating exceeds the load requirements. Consider the 4 µs rise time for timing-sensitive digital signals where moderate speed is acceptable.

Transistor, Photovoltaic Output Optoisolators Part Context

Isocom Components 2004 Ltd manufactures industrial-grade optoelectronic devices. The IS181D belongs to their surface mount optocoupler portfolio, designed to replace through-hole equivalents in space-constrained designs. The company emphasizes reliability in isolated signal transmission for commercial and industrial electronics.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements must match the 4-pin SMD gull wing package and NPN transistor output type. Verify equivalent isolation voltage and current transfer ratio ranges. Check pinout compatibility to avoid circuit redesign during substitution.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum collector-emitter voltage for the IS181D?

The maximum collector-emitter voltage is 80 V.

Does the IS181D support AC input signals?

No, the IS181D is designed for DC input as it consists of an infrared LED and NPN phototransistor.