CNY17F2SR2M

Overview

The CNY17F2SR2M is a single-channel optoisolator featuring an NPN phototransistor output, manufactured by Fairchild Semiconductor (onsemi). It provides electrical isolation with a rated voltage of 4170Vrms. The device operates within a temperature range of -55°C to 100°C and utilizes a surface-mount 6-SMD package with tape and reel configuration. Key electrical characteristics include a minimum current transfer ratio of 63% at 10mA input current, with a maximum of 125%. Typical switching times are specified as 2µs for turn-on and 3µs for turn-off.

Feature Summary

• Integrates a Gallium Arsenide infrared emitting diode coupled with an NPN phototransistor for signal transmission
• Provides high-voltage electrical isolation between input and output circuits
• Designed for through-hole or surface-mount applications depending on specific package variant requirements

Applications

• General-purpose digital signal isolation in industrial control systems
• Interface circuits for microcontrollers requiring galvanic separation
• Power supply feedback loops for safety isolation

Procurement Notes

Verify the exact package type and lead configuration against the specific datasheet revision, as the CNY17 series includes both DIP and SMD variants. Confirm the manufacturer source, noting transitions from Fairchild Semiconductor to onsemi. Ensure the tape and reel packaging matches the intended automated assembly process. Check for RoHS compliance status relevant to the production batch. Validate that the 4170Vrms isolation rating meets the specific safety standards required for the target application environment.

Selection Notes

Select this component when a surface-mount transistor output optocoupler with high isolation voltage is required. Compare the 63-125% current transfer ratio against circuit gain requirements. Consider the 2µs/3µs switching speeds for signal frequency limitations. Evaluate the thermal management capabilities within the -55°C to 100°C operating range. Ensure the physical dimensions of the 6-SMD package fit the available PCB real estate compared to through-hole alternatives.

Part Context

The CNY17F2SR2M belongs to the broader CNY17 family of phototransistor output optocouplers. This series typically consists of a GaAs IR LED paired with an NPN phototransistor. The 'F2' designation generally indicates the specific current transfer ratio binning, while 'SR2M' denotes the surface-mount tape and reel packaging format. This family is widely used for general-purpose isolation tasks.

Replacement Considerations

Direct substitutes may include other CNY17 series variants such as CNY17F2SD or CNY17F2Z, provided the package type (SMD vs DIP) and electrical specifications match. Verify compatibility with onsemi or Fairchild equivalents. Cross-reference current transfer ratios and isolation voltages to ensure functional parity.