4N35300

Overview

The onsemi 4N35300 is a single-channel transistor output optocoupler featuring an NPN phototransistor. It utilizes a standard DIP-6 package for through-hole mounting. The device provides electrical isolation between input and output circuits, with a specified insulation voltage of 7500 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80 V and a forward voltage of approximately 1.2 V to 1.5 V. The component operates within a temperature range of -55°C to +110°C.

Feature Summary

• Provides high-voltage electrical isolation via infrared LED and phototransistor interface
• Features a standard six-pin dual in-line package for reliable through-hole integration
• Designed for robust operation across extended industrial temperature ranges

Applications

• General-purpose signal isolation in digital communication interfaces
• Microcontroller input/output isolation for noise immunity
• Power supply feedback loop isolation

Procurement Notes

Verify current availability status as the 4N35300 is listed as obsolete and no longer manufactured by onsemi. Confirm that any sourced units are genuine components from authorized channels. Check for valid replacement part numbers such as the 4N35VM if new production units are required for design continuity. Ensure compliance with RoHS directives if applicable to the specific batch or substitute.

Selection Notes

Select this component only if legacy compatibility is strictly required, as it is discontinued. For new designs, consider active alternatives like the 4N35VM which offers direct pin-compatible substitution. Evaluate the 7500 Vrms isolation rating against system requirements. Verify that the NPN phototransistor output characteristics meet the load driving needs of the target application circuit.

Part Context

The 4N35 series is a widely recognized family of general-purpose optocouplers known for their reliability in isolating low-power control signals. The 4N35300 variant specifically denotes a tape-and-reel packaging format within this lineage. These devices are commonly used in applications requiring galvanic isolation to protect sensitive electronics from high-voltage transients or ground loops.

Replacement Considerations

The 4N35VM is identified as a direct substitute for the obsolete 4N35300. Both parts share similar functional characteristics and pin configurations. Designers should verify that the 4N35VM meets all original specification requirements before implementation.