SEARCH
— IC芯片 | 连接器 | 传感器 | 被动器件 —
The VOT8121AD is a phototriac optoisolator manufactured by Vishay Semiconductor Opto Division. It features an infrared LED optically coupled to a photosensitive TRIAC in a DIP-4 package. Key electrical parameters include a maximum RMS on-state current of 100 mA, a DC forward current of 50 mA, and a peak forward voltage of 1.2 V. The device provides 5300Vrms isolation voltage and supports an off-state voltage of 800 V. It operates within a temperature range of -55°C to +110°C and has a typical holding current of 250 µA.
Verify the specific suffix 'AD' corresponds to the DIP-4 through-hole package variant. Confirm that the required isolation rating of 5300Vrms aligns with system safety standards. Check RoHS compliance status and ensure the operating temperature range meets environmental requirements. Validate pinout compatibility during integration.
Select this component when high isolation voltage and compact form factor are required for AC load control. Compare against SOP variants if surface mount technology is preferred. Ensure the 800V off-state voltage rating exceeds the peak line voltage in the application circuit. Consider thermal management for continuous operation near maximum ratings.
This part belongs to the VOT8121A family of phototriac optocouplers. It shares functional similarities with the VOT8121AM (SOP-4) and VOT8121AG (DIP-4) variants. The primary distinction lies in the packaging style, with the AD version utilizing a dual-in-line package suitable for through-hole mounting.
The VOT8121AG is a direct package-compatible replacement within the same series. Verify pinout alignment before substitution. Other Vishay triac output optocoulers may require circuit redesign due to differing isolation or current ratings.