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Product Detailed Parameters
- Description：OPTOISOLTR 3.75KV TRIAC 1CH 4SOP
- Series：APT
- Mfr：Panasonic Electric Works
- Package：Tube
- Output Type：Triac
- Zero Crossing Circuit：Yes
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Voltage - Off State：600 V
- Static dV/dt (Min)：500V/µs
- Current - LED Trigger (Ift) (Max)：10mA
- Current - On State (It (RMS)) (Max)：50 mA
- Current - Hold (Ih)：3.5mA
- Turn On Time：100µs (Max)
- Voltage - Forward (Vf) (Typ)：1.21V
- Current - DC Forward (If) (Max)：50 mA
- Operating Temperature：-40°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP
- Approval Agency：cUR, VDE
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Overview
The APT1231S is a Triac output optoisolator manufactured by Panasonic Electric Works, designed for high-voltage isolation applications. It features a maximum RMS on-state current of 50mA and a hold current of 3.5mA. The device provides an isolation voltage of 3750Vrms and utilizes a 4-SOP package. Key electrical parameters include a maximum turn-on time of 100us and a maximum LED trigger current of 10mA. This component is engineered to support triac ignition in various control systems.
Feature Summary
- Low zero-cross voltage design reduces device noise
- High isolation voltage capability
- Compact surface-mount packaging
Applications
- Triac ignition in heater controls
- Office equipment control circuits
- Home appliance motor drivers
- Industrial machine control interfaces
- Solid State Relay (SSR) driver stages
Procurement Notes
Verify the specific datasheet version and manufacturer documentation to confirm compliance with required isolation standards and thermal characteristics. Ensure that the 4-SOP package dimensions match the target PCB footprint. Cross-reference the electrical ratings against the application's peak load requirements to prevent overstress conditions during operation.
Selection Notes
Select this component when low electromagnetic interference is critical due to its reduced zero-cross voltage specification. Consider the 50mA RMS current limit for small-scale AC loads. Evaluate the 3750Vrms isolation rating against system safety requirements. Confirm compatibility with the driving circuit's LED trigger current limits before integration into the design.
Part Context
This part belongs to the Panasonic Triac & SCR Output Optocouplers category. It serves as a solid-state switching interface between low-voltage control logic and higher-voltage AC power stages. The technology enables galvanic isolation while providing reliable switching performance for consumer and industrial electronics.
Replacement Considerations
Consult official Panasonic Electric Works substitution guides for verified equivalent parts. Do not assume functional interchangeability with generic triac optocouplers without verifying pinout, isolation voltage, and current ratings.
