ISP521-4XBL

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-4XBL is a quad-channel optically coupled isolator manufactured by Isocom Components. It integrates four infrared light-emitting diodes with NPN silicon phototransistors within a single space-efficient dual in-line plastic package. The device provides electrical isolation between input and output circuits, featuring a high isolation voltage rating of 5300Vrms. Key electrical parameters include a minimum collector-emitter breakdown voltage (BVCEO) of 55V and a typical current transfer ratio of 100%. The component operates within a temperature range of -30°C to +100°C and is designed for high-density mounting applications requiring robust signal transmission across different potentials.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates four independent channels of infrared LEDs and NPN phototransistors for compact multi-circuit isolation
• Provides high-voltage electrical isolation between input and output sides to protect sensitive components
• Utilizes a space-efficient dual in-line plastic package suitable for high-density surface or through-hole mounting
• Ensures reliable signal transmission with high current transfer ratios and fast switching characteristics

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals and peripheral interface circuits
• Industrial system controllers and automation logic
• Signal transmission between systems with different potentials and impedances
• Measuring instruments requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'BL' against official Isocom documentation to confirm lead spread dimensions and tape-and-reel availability. Ensure the procurement source provides valid UL recognition certificates. Confirm that the manufacturer part number matches the exact quad-channel configuration required for the design. Check for RoHS compliance status as per the latest datasheet revision.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multiple isolated channels are required in a limited board area. The quad configuration reduces assembly complexity compared to using discrete single-channel units. Ensure the application voltage does not exceed the 55V BVCEO limit. Consider the thermal management requirements given the operating temperature range up to 100°C. Verify pin compatibility if replacing legacy designs.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP521 series family from Isocom Components, which specializes in high-performance infrared optoelectronic devices. The series is known for replacing discontinued industry-standard optocouplers. Isocom offers custom electrical parameter selections to meet specific circuit design needs. The company maintains manufacturing capabilities in Malaysia and testing facilities in the UK, ensuring adherence to global quality standards.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum isolation voltage for the ISP521-4XBL?

The device supports an isolation voltage of 5300Vrms.

How many channels does the ISP521-4XBL contain?

It contains four independent optically coupled channels.

What type of output transistor is used in this optocoupler?

It uses NPN silicon phototransistors.