ISD203

Transistor, Photovoltaic Output Optoisolators Overview

The ISD203 is a single-element transistor output optocoupler manufactured by Isocom Components. It integrates an infrared LED with an NPN silicon phototransistor in a surface mount plastic package. The device provides high isolation voltage of 5.3 kVrms and 7.5 kV peak. Key electrical parameters include a minimum collector-emitter breakdown voltage (BVCEO) of 70 V, a maximum forward current of 50 mA, and a typical current transfer ratio of 225%. It is RoHS compliant and UL recognized.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability of 5.3 kVrms and 7.5 kV peak
• NPN silicon phototransistor output for signal transmission
• 100% electrical parameter testing ensures reliability
• Surface mount packaging for space-efficient integration

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 to confirm the package type and reel configuration. The base part number denotes the standard component; adding 'SM' indicates surface mount, while 'SMT&R' specifies tape and reel packaging. Ensure the selected variant matches the required manufacturing process and lead spread specifications for the target assembly line.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and robust signal transmission are required in compact designs. The NPN phototransistor output suits applications needing digital switching or analog signal coupling with galvanic isolation. Consider the 70 V minimum BVCEO for circuits requiring higher voltage tolerance at the output stage compared to lower-rated isolators.

Transistor, Photovoltaic Output Optoisolators Part Context

The ISD203 belongs to the IS20*, ISD20*, and ISQ20* series of optically coupled isolators from Isocom Components. These devices share a common architecture of infrared LEDs paired with NPN silicon phototransistors. The series offers various packaging options including dual in-line and surface mount configurations to accommodate diverse design constraints.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Publicly confirmed substitute part numbers for the ISD203 were not identified in the provided documentation. Designers should consult manufacturer cross-reference guides for equivalent components with matching isolation ratings and pin configurations.