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Product Detailed Parameters
- Description：OPTOISOLTR 3.75KV TRIAC 1CH 4SOP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tape & Reel (TR)
- Output Type：Triac
- Zero Crossing Circuit：No
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Voltage - Off State：800 V
- Static dV/dt (Min)：1kV/µs
- Current - LED Trigger (Ift) (Max)：10mA
- Current - On State (It (RMS)) (Max)：100 mA
- Current - Hold (Ih)：250µA (Typ)
- Turn On Time：30µs
- Voltage - Forward (Vf) (Typ)：1.15V
- Current - DC Forward (If) (Max)：50 mA
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP
- Approval Agency：cUL, UL
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Overview
The VOT8121AM-T2 is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division, featuring a phototriac output. It provides an isolation voltage of 3750Vrms and supports a maximum repetitive peak off-state voltage (Vdrm) of 800V. The device operates within a temperature range of -55°C to +115°C. Key electrical parameters include a typical forward voltage (Vf) of 1.15V, a maximum DC forward current (If) of 50mA, and a maximum trigger current (Ift) of 10mA. The RMS on-state current is rated at 100mA, with a turn-on time of 30µs.
Feature Summary
- Phototriac output configuration for AC load control applications
- High isolation voltage rating of 3750Vrms between input and output circuits
- Surface-mount SOP-4 package design suitable for automated assembly
- Compliant with RoHS3 standards and certified by UL, cUL, and VDE
Applications
- Solid-state relay (SSR) implementations
- AC motor control systems
- Lighting dimmer circuit interfaces
- Industrial process control isolation
Procurement Notes
Verify the specific suffix 'T2' against the manufacturer's datasheet to confirm tape and reel packaging specifications. Ensure that the selected variant matches the required operating temperature range and isolation voltage ratings for the target application environment. Cross-reference certification marks such as UL and VDE with current regulatory requirements before finalizing component selection.
Selection Notes
Select this component when high isolation voltage and compact surface-mount packaging are required for triac triggering. Consider the 100mA RMS current capability and 800V blocking voltage limits relative to the load characteristics. Evaluate the 30µs turn-on time for timing-sensitive AC phase control applications compared to alternative optocouplers in the same family.
Part Context
This part belongs to the VOT8121 series of Triac & SCR Output Optocouplers from Vishay. It shares functional similarities with models like VOT8121AM-VT but differs in packaging and specific certification details. The series is designed for general-purpose AC switching applications requiring galvanic isolation.
Replacement Considerations
Direct substitutes include other Vishay VOT8121 variants such as VOT8121AM-VT or VOT8121AB-T3, provided they meet the specific insulation voltage and package footprint requirements of the design.
