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Product Detailed Parameters
- Description：OPTOISO 3.75KV TRIAC 1CH 4DIP GW
- 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-DIP Gull Wing
- Approval Agency：cUR, VDE
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Overview
The APT1231WA is a triac output optoisolator from the Panasonic APT1 series, designed for zero-crossing switching applications. It features a 4-DIP gull-wing package with 3750Vrms isolation voltage and a 600V off-state voltage rating. The device supports a maximum DC forward current of 50mA and includes a hold current of 3.5mA. Operating within a temperature range of -40°C to 100°C, it meets UL, VDE, cUL, and RoHS standards.
Feature Summary
- Zero-crossing circuit integration for reduced electromagnetic interference during switching
- High isolation voltage capability ensuring safe signal transmission between circuits
- Compact DIP-4 packaging suitable for PCB installation
Applications
- Solid state relay modules
- Industrial control systems requiring isolated switching
- AC load control circuits
Procurement Notes
Verify component authenticity through authorized Panasonic distributors or certified suppliers. Confirm that the specific suffix WA corresponds to the required zero-crossing variant and package style. Ensure compliance with relevant safety certifications such as UL and VDE for the intended application environment. Request official datasheets to validate electrical parameters against system requirements before finalizing procurement orders.
Selection Notes
Select this component when zero-crossing functionality is necessary to minimize inrush currents and EMI in AC switching applications. Consider the 600V blocking voltage and 3750Vrms isolation for high-voltage industrial environments. Evaluate the DIP-4 form factor for compatibility with existing board layouts. Compare alternative random-phase variants if zero-crossing timing constraints are not critical for the specific design.
Part Context
This part belongs to the Panasonic APT1 series of solid state relays and optoisolators. The series offers various package options including wide terminal types. The APT1231WA specifically denotes the zero-crossing triac output configuration within this family, distinguishing it from random-phase counterparts like the APT1231A which is noted as not recommended for new designs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. The APT1231A is listed as a related model but is marked as not recommended for new designs. Verify functional equivalence with other zero-crossing triac optoisolators from different manufacturers if direct replacement is required.
