HCPL-817-56LE

Transistor, Photovoltaic Output Optoisolators Overview

The HCPL-817-56LE is a single-channel transistor output optocoupler from the Broadcom HCPL series. It features an NPN phototransistor output with a maximum collector current of 50 mA and a collector-emitter voltage rating of 35 V. The device provides 5000 Vrms isolation voltage between input and output. Key electrical parameters include a forward voltage of 1.4 V, a minimum current transfer ratio of 50% at 5 mA input, and typical rise/fall times of 18 μs. It operates within a temperature range of -30°C to +100°C and is housed in a surface-mount 4-pin SMD package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation via a 5000 Vrms dielectric barrier between input and output circuits.
• Utilizes an NPN phototransistor output stage capable of handling up to 50 mA collector current for signal switching applications.

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Interface between microprocessors and power circuits
• Noise immunity enhancement in data communication lines

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific suffix '56LE' corresponds to the required surface-mount packaging configuration, as other suffixes may indicate through-hole variants. Confirm compliance with RoHS directives and check for AEC-Q100 automotive qualification status if intended for vehicle electronics. Ensure the supplier provides official datasheets matching the exact part number to avoid confusion with similar HCPL-817 variants.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a surface-mount footprint is required for single-channel isolation with moderate speed requirements. Compare the 50% minimum CTR against circuit drive capabilities to ensure reliable saturation. Consider the 18 μs switching speed limitations compared to faster logic outputs if high-frequency operation is necessary. Verify thermal dissipation limits within the 200 mW power rating for the specific PCB layout.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the HCPL-817 family of optocouplers manufactured by Broadcom Limited. The family includes various packages and specifications, such as through-hole DIP versions (e.g., HCPL-817-00CE) and different current transfer ratios. The HCPL-817-56LE specifically denotes the surface-mount variant designed for automated assembly processes while maintaining the core isolation characteristics of the series.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include HCPL-817-56CE, which shares identical electrical specifications but utilizes a through-hole PDIP-4 package rather than surface mount. Other HCPL-817 variants with compatible CTR ranges may function electrically but require mechanical re-evaluation due to differing package types.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum collector-emitter voltage for the HCPL-817-56LE?

The maximum collector-emitter voltage is rated at 35 V.

Does the HCPL-817-56LE meet automotive standards?

Public documentation does not confirm AEC-Q100 qualification for the HCPL-817-56LE; verification against specific automotive-grade variants is required.