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Product Detailed Parameters
- Description：OPTOISOLTR 3.75KV 1CH DARL 4-SOP
- Series：-
- Mfr：TT Electronics/Optek Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：1000% @ 1mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：100µs, 20µs
- Input Type：DC
- Output Type：Darlington
- Voltage - Output (Max)：300V
- Current - Output / Channel：150mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：1.5V
- Operating Temperature：-30°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP (2.54mm)
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Overview
The OPIA401BTR is a discontinued optoisolator manufactured by TT Electronics/Optek Technology. It features a single channel with a Darlington transistor output and provides 3750Vrms isolation voltage. The device utilizes a 4-SOP (2.54mm) surface mount package. Key electrical parameters include a maximum collector-emitter voltage of 300V, a peak forward current of 50mA, and a typical forward voltage of 1.2V. The unit supports an operating temperature range from -30°C to 100°C.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Delivers high current gain through integrated Darlington transistor configuration
- Designed for compact surface-mount integration in dense circuit layouts
Applications
- Industrial control systems requiring signal isolation
- Power supply feedback loops
- Microcontroller interface circuits
Procurement Notes
This component has been officially declared obsolete and is no longer in production. Sourcing new units directly from the manufacturer is not possible. Verification of authenticity is critical when purchasing from secondary markets due to potential availability of refurbished or counterfeit stock. Buyers must confirm the specific manufacturing date code and physical condition before acquisition.
Selection Notes
Engineers should evaluate direct replacement options as this part is end-of-life. Alternative components must match the required isolation voltage, output type, and package dimensions. Compatibility checks for current transfer ratio and saturation voltage are necessary to ensure circuit performance remains within design specifications during the transition to a substitute device.
Part Context
The OPIA401BTR belongs to the OPIA400 series of optocouplers produced by TT Electronics/Optek Technology. This series is characterized by its use of Darlington outputs for enhanced sensitivity and isolation capabilities. The component represents a standard solution for galvanic isolation in electronic designs prior to its discontinuation.
Replacement Considerations
The LTV-352T from Lite-On is documented as a direct substitute for this obsolete component.
