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Product Detailed Parameters
- Description：OPTOISO 3.75KV TRANS 4-MINI-FLAT
- Series：Optocoupler
- Mfr：QT Brightek (QTB)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：20% @ 1mA
- Current Transfer Ratio (Max)：300% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.24V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SOIC (0.173", 4.40mm Width)
- Supplier Device Package：4-Mini-Flat
- Grade：-
- Qualification：-
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Overview
The QTH214T1 is a single-channel optocoupler manufactured by QT Brightek (QTB). It features a photovoltaic output configuration housed in a compact 4-Mini-Flat package, also described as 4-SOIC with a 0.173-inch width. The device provides an isolation voltage of 3750Vrms. This component belongs to the Optocoupler series and is currently listed as active. It is designed for applications requiring electrical isolation between input and output circuits.
Feature Summary
- Photovoltaic output architecture
- High isolation voltage rating
- Compact surface-mount packaging
Applications
- Signal isolation in measurement systems
- Interface between microcontrollers and high-voltage circuits
- Safety barrier implementation in industrial control
Procurement Notes
Verify the specific datasheet version when ordering, as package descriptions may vary slightly between Mini-Flat and SOIC terminology. Confirm that the photovoltaic output type matches the circuit requirements, as it differs from transistor or logic outputs. Ensure the 3750Vrms isolation rating meets the safety standards of the target application environment.
Selection Notes
Select this component when a galvanic isolation barrier is required without active output drive capabilities. The photovoltaic output generates voltage rather than current, necessitating external pull-up resistors or compatible input stages. Consider the physical dimensions of the 4-pin mini-flat package for PCB layout constraints compared to standard SOIC footprints.
Part Context
This part is part of QT Brightek's optoelectronics portfolio, focusing on signal isolation solutions. Unlike triac-based isolators like the QTT2213ST1, this model uses a photovoltaic mechanism suitable for low-power signal transmission. It serves as a fundamental building block for creating isolated communication links in electronic designs.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and isolation voltage ratings before considering alternative manufacturers' photovoltaic optocouplers.
