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The 3N261 is a high-reliability optically coupled isolator manufactured by TT Electronics/Optek Technology. It integrates an infrared emitting diode with an NPN silicon phototransistor in a TO-72-4 metal can package. The device provides 1000VDC isolation voltage and supports a maximum output voltage of 30V. Key electrical parameters include a DC forward current of 40mA, collector-emitter saturation voltage of 300mV, and a minimum current transfer ratio of 30% at 10mA input. Operating temperatures range from -55°C to 125°C.
Verify the specific datasheet version and manufacturing lot details upon order confirmation. Ensure that the TO-72-4 through-hole mounting requirements align with your PCB design constraints. Confirm compliance with relevant environmental regulations such as RoHS status before finalizing procurement specifications.
Select this component when high reliability and robust physical packaging are required over surface-mount alternatives. Consider the TO-72-4 form factor for legacy or high-vibration applications. Evaluate the 1000VDC isolation rating against system noise immunity needs. Verify thermal management capabilities within the specified operating temperature range.
This component belongs to the 3N series of optoisolators from TT Electronics/Optek Technology. These devices are designed for general-purpose isolation tasks where standard plastic packages may not suffice. The series typically offers various pin configurations and isolation ratings to suit different circuit protection requirements.
The 3N244 is a documented similar part number within the same manufacturer portfolio. Verify pinout compatibility and specific electrical parameter tolerances before substitution.