PC354N

Overview

The PC354N is a single-channel transistor output optocoupler manufactured by Sharp Microelectronics. It features an NPN phototransistor output and operates in a surface-mount SMD-4 package. Key electrical parameters include a minimum current transfer ratio of 400%, a maximum collector-emitter voltage of 80 V, and a maximum collector current of 1.5 mA. The device provides 3750 Vrms insulation voltage with a forward voltage of 1.4 V at 50 mA input. Switching characteristics include rise and fall times of 18 µs. It supports an operating temperature range from -30°C to +100°C.

Feature Summary

• Provides high-speed signal transmission with 18 µs rise and fall times for efficient data isolation.
• Ensures robust electrical safety through 3750 Vrms insulation voltage between input and output circuits.
• Delivers high current transfer efficiency with a minimum CTR of 400% for reliable switching performance.

Applications

• AC mains detection circuits
• Solid-state relay driver interfaces
• Microcontroller input isolation

Procurement Notes

Verify the specific suffix designation when ordering, as variants like PC354NJ0000F may differ in packaging or binning. Confirm RoHS compliance status and UL certification requirements for your target market. Ensure the selected component matches the required current transfer ratio ranking for consistent circuit behavior across production batches.

Selection Notes

Select this component for applications requiring fast switching speeds and high isolation voltage in a compact surface-mount form factor. The high CTR ensures compatibility with low-drive logic levels. Consider thermal dissipation limits within the SMD-4 package when designing for high ambient temperatures or continuous duty cycles.

Part Context

The PC354N belongs to Sharp's PC354N/M series of transistor output optocouplers. This family is designed for general-purpose isolation tasks where speed and reliability are critical. The device utilizes a gallium arsenide infrared LED coupled to an NPN phototransistor, offering a balance of performance and cost-effectiveness for industrial and consumer electronics.

Replacement Considerations

PC354NJ0000F

FAQ

What is the typical switching speed of the PC354N?

The PC354N features a rise time and fall time of 18 µs, making it suitable for moderate-speed digital isolation applications.

Does the PC354N support AC input signals directly?

Yes, the internal infrared LED can be driven by AC signals, allowing the PC354N to be used in AC detection circuits without external rectification.