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Product Detailed Parameters
- Description：OPTOISOLTR 1KV 1CH TRANS TO-72-4
- Series：-
- Mfr：TT Electronics/Optek Technology
- Package：Bulk
- Number of Channels：1
- Voltage - Isolation：1000VDC
- Current Transfer Ratio (Min)：15% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：10µs, 10µs (Max)
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：30V
- Current - Output / Channel：30mA
- Voltage - Forward (Vf) (Typ)：1.3V (Max)
- Current - DC Forward (If) (Max)：40 mA
- Vce Saturation (Max)：300mV
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-206AF, TO-72-4 Metal Can
- Supplier Device Package：TO-72-4
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Overview
The 3N243TX is a high-reliability optically coupled isolator manufactured by TT Electronics/Optek Technology. It comprises an infrared emitting diode and an NPN silicon phototransistor housed in a hermetically sealed TO-72 metal can package with 0.50-inch leads. The device operates at an 880 nm wavelength and provides 1 kVDC electrical isolation between input and output channels. Key electrical parameters include a maximum collector-emitter voltage of 30V, a DC forward current limit of 40 mA, and a minimum current transfer ratio of 30% at 10 mA. It supports a wide operating temperature range from -55°C to 125°C and features a typical rise/fall time of 10 µs.
Feature Summary
- Hermetically sealed TO-72 metal can package for environmental protection
- High current transfer ratio for efficient signal transmission
- 1 kVDC electrical isolation capability
- Processed to MIL-PRF-19500 standards
Applications
- High-voltage isolation between input and output circuits
- Electrical isolation in dirty industrial environments
- Industrial equipment control systems
- Medical equipment signal isolation
Procurement Notes
Verify the specific suffix 'TX' against official manufacturer documentation to confirm lead finish or tape-and-reel configuration details. Ensure the procurement source provides valid traceability certificates if MIL-PRF-19500 compliance is required for the application. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing specifications.
Selection Notes
Select this component when hermetic sealing and military-grade reliability are mandatory for the optical coupler. The TO-72 package requires through-hole mounting, which may influence PCB layout decisions compared to surface-mount alternatives. Verify that the 30V output voltage rating and 30mA output current capacity meet the specific load requirements of the target circuit design.
Part Context
The 3N243TX belongs to the 3N24x series of high-reliability optocouplers from TT Electronics/Optek Technology. This series shares the same physical TO-72 package and basic structural design but varies in electrical characteristics such as current transfer ratio and switching speed. The 3N243 specifically utilizes an 880 nm wavelength emitter, distinguishing it from other variants in the family that may use different wavelengths.
Replacement Considerations
The 3N245 is a similar part within the same product family sharing the TO-72 package and isolation voltage. Verify electrical parameter differences, particularly the current transfer ratio and switching times, before substitution. Other compatible replacements must match the hermetic seal requirement and pinout configuration.
