4N26S-TA1

Overview

The Lite-On 4N26S-TA1 is a single-channel transistor output optocoupler housed in a PDIP-6 gull wing package. It features an NPN phototransistor output with a minimum current transfer ratio of 20%. The device supports a maximum forward current of 80 mA and a collector-emitter voltage of 30 V. Key electrical parameters include a rise time of 3 µs, a fall time of 3 µs, and a maximum collector current of 100 mA. The unit provides an insulation voltage of 1500 VRMS.

Feature Summary

• Integrates an infrared emitting diode with an NPN phototransistor for signal isolation.
• Provides high-speed switching capabilities with defined rise and fall times.
• Designed for surface mount installation using a standard six-lead gull wing package.

Applications

• Signal isolation in digital communication circuits
• Interface between microprocessors and power control systems
• Switching applications requiring galvanic isolation

Procurement Notes

Verify the specific suffix TA1 to confirm tape-and-reel packaging configuration when sourcing from distributors. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with official datasheets to confirm pinout compatibility and thermal characteristics before finalizing procurement orders.

Selection Notes

Select this component when a low-cost, general-purpose transistor output optocoupler is required for basic isolation tasks. Consider the 20% minimum current transfer ratio for logic level driving applications. Evaluate the 1500 VRMS insulation rating against system safety standards. Compare performance metrics such as propagation delay against higher-speed alternatives if circuit timing constraints are tight.

Part Context

This device belongs to the 4N26 series of transistor output optocouplers manufactured by Lite-On. The series is widely recognized for providing reliable electrical isolation between input and output circuits. The S variant typically denotes specific packaging or reel configurations within the broader product family.

Replacement Considerations

Generic equivalents include the 4N26 and 4N27 series components. Verify pinout compatibility and electrical parameter margins before substitution. Check for identical package dimensions to ensure mechanical fit in existing PCB layouts.