H11A1S(TA)

Overview

The H11A1S(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and provides a high isolation voltage of 5000 Vrms. The device is housed in a compact SMD-6 surface-mount package, suitable for space-constrained designs. Key electrical characteristics include a forward voltage of approximately 1.2V to 1.5V and a collector-emitter saturation voltage of up to 400mV. The component supports a maximum continuous output current of 50 mA and operates within a temperature range of -55°C to +100°C.

Feature Summary

• Provides robust electrical isolation with a high dielectric strength of 5000 Vrms between input and output circuits.
• Utilizes a compact SMD-6 surface-mount package designed for efficient PCB layout in space-limited applications.
• Features an NPN phototransistor output capable of driving digital logic interfaces with low saturation voltage.

Applications

• Digital signal isolation in microcontroller-based systems
• Power supply feedback loops requiring galvanic isolation
• Industrial control interface circuits

Procurement Notes

Verify the specific suffix (TA) to confirm the tape-and-reel packaging format, as variations exist for tube or cut-tape options. Confirm RoHS compliance status through the latest manufacturer documentation, as environmental declarations may be updated. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability for critical electronic assemblies.

Selection Notes

Select this component when a small form factor is required alongside high-voltage isolation capabilities. The NPN phototransistor output is appropriate for standard digital switching applications. Compare rise and fall times against system timing requirements if high-speed data transmission is involved. Ensure the operating temperature range aligns with the intended environmental conditions of the final product assembly.

Part Context

This part belongs to the H11A series of transistor output optocouplers from Everlight. It shares functional similarities with through-hole variants like the H11A1 but offers a surface-mount footprint. The H11L series represents a logical output variant within the same family, differing in internal circuitry and response characteristics.

Replacement Considerations

Direct pin-compatible replacements may include other 6-SMD transistor output optocouplers with equivalent 5000 Vrms isolation ratings. Verify that substitute components match the NPN output configuration and physical dimensions. Cross-reference datasheets for identical electrical parameters such as CTR and saturation voltage before implementation.