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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)：60% @ 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 3N245TX is a high-reliability optically coupled isolator manufactured by TT Electronics/Optek Technology. It consists of 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 provides 1 kVDC electrical isolation between input and output. Key electrical parameters include a minimum current transfer ratio of 60% at a forward current of 3 mA, a maximum collector-emitter voltage of 30 V, and a maximum collector current of 30 mA. The typical rise and fall times are both 10 µs.
Feature Summary
- Hermetically sealed TO-72 package for durability
- 1 kVDC electrical isolation capability
- High current transfer ratio performance
- Processed to MIL-PRF-19500 standards
Applications
- High-voltage isolation between input and output circuits
- Electrical isolation in dirty environments
- Industrial equipment signal transmission
- Medical equipment safety isolation
Procurement Notes
Verify the specific suffix 'TX' indicates processing to MIL-PRF-19500 standards as documented. Confirm the package type is TO-72-4 and lead spacing matches 0.50 inches. Ensure the component meets RoHS requirements if applicable to the project specifications. Cross-reference the datasheet revision date to ensure compatibility with design constraints.
Selection Notes
Select this component when high reliability and hermetic sealing are required for harsh environments. The TO-72 package offers superior protection compared to plastic packages. Verify that the 10 µs switching speed meets the application timing requirements. Ensure the 1 kVDC isolation rating satisfies the system's safety insulation needs.
Part Context
The 3N245TX belongs to the 3N24x series of high-reliability optocouplers from TT Electronics/Optek Technology. This series includes variants like the 3N243, 3N244, and 3N262, which share similar physical packaging but may differ in electrical characteristics such as current transfer ratio. The TX suffix specifically denotes military-grade processing.
Replacement Considerations
Direct substitutes include other parts from the same series processed to MIL-PRF-19500, such as the 3N245R. Verify pinout compatibility and electrical parameter equivalence before substitution. Generic TO-72 optocouplers may not offer the same level of hermetic sealing or reliability.
