Ceramic Hermetically Sealed, Radiation-Hard Transistor Optocouplers

The IS49 is a hermetically sealed, single channel optically coupled isolator. It is comprised of an infrared emitting diode and a silicon phototransistor.

The IS49 is being used in environments encountered in space applications. Package styles for this device include a 6-Pin LCC package with solder dip options available. Absolute maximum ratings, recommended operating conditions, electrical specifications and performance characteristics are identical for all units. Any exceptions, due to packaging variations and limitations, are as noted.

The IS49 is equivalent to 66138, 4N22U, 4N23U, 4N24U, 4N47U, 4N48U, 4N49U.

Key features of the IS49 include:

• Radiation Tolerance Tested to 150 Krad(Si)
• Displacement Damage Tested to 1 MeV x 1013
• Withstand Test Voltage of 1,000 VDC
• High Current Transfer Ratio
• Low Input Requirements
• LCC-6 Package
• Small Outline Package for Surface Mount
• Hermetically Sealed

Typical applications for the IS49 include:

• Space Equipment and Systems
• Military Equipment and Systems
• Medical Instruments
• MOS / CMOS Applications
• Logic Interfacing
• Data Transmission
• Power Supply
• Modems