SL5500W

Overview

The SL5500W is a single-channel optoisolator manufactured by onsemi, featuring a transistor output with an integrated base. It provides robust electrical isolation of 5300Vrms between input and output circuits. The device utilizes a standard 6-DIP package suitable for through-hole mounting. Key electrical specifications include a maximum collector-emitter voltage of 30V and a peak output current capability of 100mA per channel. The typical forward voltage is 1.23V, with a maximum DC forward current of 100mA. Current transfer ratios range from 40% to 300% at 10mA input. Switching times are characterized by a typical turn-on time of 2µs and a maximum turn-off time of 50µs. The component operates within a temperature range of -55°C to 100°C.

Feature Summary

• Provides high-voltage galvanic isolation via optical coupling
• Transistor output configuration includes accessible base terminal
• Designed for reliable signal transmission across isolated domains

Applications

• Industrial control systems requiring circuit isolation
• Power supply feedback loops for safety compliance
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix 'W' corresponds to the 6-DIP through-hole package variant when sourcing replacements. Confirm that the procurement source accepts end-of-life or obsolete components if availability is limited. Ensure the supplier documentation explicitly lists the 5300Vrms isolation rating and the 6-DIP form factor to match the original design requirements. Cross-reference the manufacturer part number against official obsolescence notices to determine long-term support status.

Selection Notes

Select this component when a transistor output with a base pin is required for flexible biasing options in isolated circuits. The 6-DIP package facilitates easy prototyping and manual assembly compared to surface-mount alternatives. Consider the switching speed limitations inherent to bipolar transistor outputs when designing for high-frequency applications. Verify that the isolation voltage rating meets the specific safety standards mandated by the target equipment regulations.

Part Context

The SL5500 series represents a family of general-purpose optocouplers designed for basic isolation tasks. The SL5500W specifically denotes the DIP package version within this lineup. These devices are commonly used in legacy designs and industrial equipment where cost-effective isolation is prioritized over high-speed performance. The series shares core electrical characteristics with other variants differing primarily in packaging and minor parameter tolerances.

Replacement Considerations

Direct substitutes may include equivalent transistor-output optocouplers with matching 6-DIP packages and similar isolation ratings. Verify pinout compatibility and current transfer ratio ranges before substitution. Check for any differences in switching speeds or saturation voltages that might impact circuit timing.