ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
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)：50% @ 1mA
- Current Transfer Ratio (Max)：600% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：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-SMD, Gull Wing
- Supplier Device Package：4-Mini-Flat
- Grade：-
- Qualification：-
Download product information
Overview
The QTM357T1 is a photovoltaic output optoisolator manufactured by QT Brightek. It features a single channel with 3750Vrms isolation voltage and operates within a temperature range of -55°C to 110°C. The device utilizes a 4-Mini-Flat surface mount package, also described as 4-SMD Gull Wing. Key electrical characteristics include a minimum current transfer ratio of 50% at 1mA input and a maximum of 600% at the same current level.
Feature Summary
- Photovoltaic transistor output configuration for signal isolation
- High voltage isolation capability of 3750Vrms between input and output circuits
- Wide operating temperature range suitable for demanding industrial environments
Applications
- Industrial automation control systems requiring galvanic isolation
- Signal transmission in noisy electrical environments
- Microcontroller interface circuits for safety-critical applications
Procurement Notes
Verify the specific datasheet version from QT Brightek to confirm pinout compatibility and absolute maximum ratings before integration. Ensure that the 4-Mini-Flat package dimensions align with the printed circuit board footprint design. Confirm thermal management requirements are met for operation near the upper limit of the specified temperature range.
Selection Notes
Select this component when high isolation voltage is required in a compact surface-mount form factor. The photovoltaic output type offers distinct switching characteristics compared to standard transistor outputs. Evaluate the current transfer ratio specifications against the load requirements of the receiving circuit to ensure reliable signal transmission across the full operating temperature range.
Part Context
This component belongs to the family of optoelectronic isolators produced by QT Brightek. It serves as a critical interface element for breaking ground loops and protecting sensitive low-voltage logic circuits from high-voltage transients. The Mini-Flat package allows for dense PCB layouts while maintaining necessary creepage and clearance distances for safety compliance.
Replacement Considerations
Cross-reference with other 4-pin photovoltaic optocouplers offering similar isolation voltages. Verify that substitute parts match the physical package dimensions and pin assignments to ensure mechanical compatibility without redesigning the host circuit board.
