IS203

Transistor, Photovoltaic Output Optoisolators Overview

The IS203 is a high-density phototransistor optically coupled isolator manufactured by Isocom Components. It integrates an infrared light-emitting diode with an NPN silicon phototransistor within a space-efficient dual in-line plastic package. The device provides robust electrical isolation with a maximum insulation voltage of 5300 Vrms and 7500 V peak. Key electrical specifications include a minimum collector-to-emitter breakdown voltage (BVCEO) of 70 V and a typical current transfer ratio of 225%. All electrical parameters are 100% tested to ensure reliability.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability for safe signal transmission between systems of different potentials
• Optical coupling via infrared LED and NPN silicon phototransistor for galvanic isolation
• 100% electrical parameter testing ensures consistent performance across units

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals
• Industrial systems controllers
• Signal transmission between systems of different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix configuration required for the application, such as SM for surface mount or SMT&R for tape and reel packaging, as these alter the physical form factor. Confirm compliance with relevant safety certifications like UL recognition if required by the end-product standards. Ensure the selected variant matches the lead spread requirements, noting that G-form options exist for 10mm spacing. Cross-reference datasheet revisions to confirm parameter stability before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select the IS203 when high-density packaging and reliable optical isolation are required for single-channel applications. Consider the BVCEO minimum of 70 V for circuit voltage levels. Evaluate the need for surface mount versus through-hole configurations based on assembly constraints. Custom electrical selections may be available for specialized current transfer ratio requirements, necessitating direct consultation with the manufacturer for non-standard specifications.

Transistor, Photovoltaic Output Optoisolators Part Context

The IS203 belongs to the IS20*, ISD20*, and ISQ20* series of optically coupled isolators from Isocom Components. This family utilizes infrared LEDs paired with NPN silicon phototransistors. The series offers various packaging options including standard DIP, surface mount, and custom configurations. These components are designed for general-purpose isolation tasks where space efficiency and verified electrical performance are critical design factors.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public cross-references indicate compatibility with MCT6 and TIL191 devices within the same functional category of high-density phototransistor optocouplers. Verify pinout compatibility and electrical parameter margins, particularly BVCEO and CTR ranges, before substituting. Ensure the replacement part meets the same isolation voltage requirements and safety certification standards as the original IS203 specification.