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Product Detailed Parameters
- Description：TRIAC SENS GATE 400V 0.8A SC73
- Series：-
- Mfr：WeEn Semiconductors
- Package：Tape & Reel (TR)
- Triac Type：Logic - Sensitive Gate
- Voltage - Off State：400 V
- Current - On State (It (RMS)) (Max)：800 mA
- Voltage - Gate Trigger (Vgt) (Max)：2 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：9A, 10A
- Current - Gate Trigger (Igt) (Max)：5 mA
- Current - Hold (Ih) (Max)：10 mA
- Configuration：Single
- Operating Temperature：125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-261-4, TO-261AA
- Supplier Device Package：SC-73
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Overview
The BT1308W-400D,115 is a sensitive gate triac manufactured by WeEn Semiconductors. It features a repetitive peak off-state voltage (VDRM) of 400 V and an RMS on-state current (IT(RMS)) of 0.8 A. The device supports a non-repetitive surge current (ITSM) of up to 9 A for 20 ms. Gate triggering characteristics include a maximum gate trigger voltage (VGT) of 900 mV and a maximum gate trigger current (IGT) of 4 mA. It operates within a junction temperature range of -40°C to +125°C and is housed in a surface-mount SOT-223 package.
Feature Summary
- Sensitive gate design enabling direct interfacing with logic level integrated circuits
- Four-quadrant gate triggering capability for reliable switching across all AC phases
- Surface-mountable plastic package designed for increased heatsink performance
Applications
- General purpose switching applications
- Phase control circuits
- Low-power AC fan speed controllers
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to confirm packaging configuration. Confirm that the component meets required RoHS and REACH compliance standards for the target market. Ensure the selected variant matches the exact voltage rating and thermal requirements of the intended circuit design before finalizing procurement.
Selection Notes
Select this component when a compact surface-mount solution is required for low-power AC control. The 400 V rating suits standard single-phase mains applications. Verify that the gate drive circuit can supply sufficient current to meet the sensitive gate specifications. Consider the thermal management capabilities of the PCB layout given the SOT-223 package constraints.
Part Context
This part belongs to the BT1308W series D triacs from WeEn Semiconductors. The series includes variants with different voltage ratings, such as the 600 V version. These devices are engineered for general-purpose AC switching where small form factor and logic compatibility are prioritized over high current handling.
Replacement Considerations
Direct substitutes within the same series include the BT1308W-600D,115 for higher voltage tolerance. Cross-brand replacements must match the SOT-223 footprint, 400 V rating, and sensitive gate characteristics to ensure functional equivalence.
