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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV TRIAC 1CH 4-SMD
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tube
- Output Type：Triac
- Zero Crossing Circuit：No
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- 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)：400µA (Typ)
- Turn On Time：-
- Voltage - Forward (Vf) (Typ)：1.2V
- 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-SMD
- Approval Agency：CQC, cUL, UL, VDE
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Overview
The VOT8121AB is a single-channel optoisolator featuring a Triac output, manufactured by Vishay Semiconductor Opto Division. It provides an isolation voltage of 5300Vrms and supports an off-state voltage of 800V. The device operates within a temperature range of -55°C to 110°C and utilizes a 4-SMD surface-mount package. Key electrical parameters include a maximum RMS on-state current of 100mA, a typical holding current of 400µA, and a minimum static dV/dt of 1kV/µs. It lacks zero-crossing circuitry and carries UL, cUL, CQC, and VDE certifications.
Feature Summary
- High isolation voltage capability of 5300Vrms for robust circuit protection
- Sensitive gate trigger design with low holding current requirements
- High noise immunity characterized by a minimum static dV/dt rating
- Compliant with international safety standards including UL and VDE
Applications
- Solid-state relay driver circuits
- AC motor control interfaces
- Industrial automation switching modules
- Power supply feedback isolation loops
Procurement Notes
Verify the specific suffix (e.g., AB, AD, AG) against the datasheet to confirm insulation class and creepage distances. Ensure the ordering code matches the required packaging format such as tape and reel or cut tape. Confirm RoHS compliance status and moisture sensitivity level requirements prior to finalizing procurement orders for production integration.
Selection Notes
Select this component when high-voltage isolation is required without zero-crossing detection features. Compare the 5300Vrms isolation rating against system safety requirements. Evaluate the 100mA RMS current capacity against load demands. Consider the 4-SMD footprint constraints during PCB layout planning and verify thermal management needs for the specified operating temperature range.
Part Context
This part belongs to the VOT8121 family of Triac output optocouplers from Vishay. The series includes variants like VOT8121AM with different isolation ratings and packages. These devices are designed for general-purpose AC switching applications requiring galvanic isolation between control logic and high-voltage AC loads.
Replacement Considerations
Check VOT8121AD and VOT8121AG for alternative insulation specifications within the same package. Verify pinout compatibility before substituting with other Vishay Triac optocouplers. Cross-reference isolation voltages and current ratings with competitor models ensuring equivalent safety certifications.
