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LX803DE is listed in the Triacs range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is TRIAC SENS GATE 400V 0.8A TO92. Review the specifications below when checking this part for your BOM.
Triacs specifications for LX803DE
- Description：TRIAC SENS GATE 400V 0.8A TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Triac Type：Logic - Sensitive Gate
- Voltage - Off State：400 V
- Current - On State (It (RMS)) (Max)：800 mA
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：8A, 9.5A
- Current - Gate Trigger (Igt) (Max)：3 mA
- Current - Hold (Ih) (Max)：5 mA
- Configuration：Single
- Operating Temperature：-40°C ~ 110°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92
Triacs datasheet and documents for LX803DE
Triacs Overview
The Littelfuse LX803DE is a bidirectional triac designed for sensitive gate triggering applications. It operates with an RMS on-state current of 800 mA and supports a non-repetitive peak on-state current of 8 A. The device features a rated repetitive off-state voltage (VDRM) of 400 V, ensuring reliable blocking capability in AC circuits. Key electrical characteristics include a maximum holding current of 5 mA and a gate trigger voltage of 1.3 V. The component functions within a temperature range of -40°C to +110°C and is housed in a TO-92 through-hole package.
Triacs Feature Summary
- Sensitive gate architecture enables efficient triggering with low gate current requirements.
- Bidirectional conduction allows control of alternating current loads in both directions.
- Robust thermal performance supports operation across extended industrial temperature ranges.
Triacs Applications
- Lighting dimmer circuits
- Solid-state relays
- AC motor speed control
Triacs Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pinout configuration and packaging type. Ensure the selected variant matches the required voltage and current ratings for the target circuit design before finalizing procurement.
Triacs Selection Notes
Select this component when a logic-level or sensitive gate triac is required for low-power AC switching applications. Confirm that the 400 V blocking voltage and 800 mA continuous current rating align with the load specifications and safety margins of the intended system.
Triacs Part Context
This part belongs to the LX8 series of thyristors from Littelfuse. The series focuses on providing reliable AC power control solutions with compact form factors suitable for various consumer and industrial electronic devices requiring efficient switching capabilities.
Triacs Replacement Considerations
Consult the official Littelfuse substitution guide for verified equivalents. Cross-reference parameters such as VDRM, IT(RMS), and package dimensions to ensure compatibility without modifying the existing PCB layout.
Triacs FAQ
What is the maximum gate trigger current for the LX803DE?
The maximum gate trigger current (Igt) is specified as 5 mA.
Does the LX803DE support through-hole mounting?
Yes, the component is available in a TO-92 package designed for through-hole installation.
What is the leakage current specification at rated voltage?
The off-state leakage current (IDRM) is typically 5 µA at the rated repetitive off-state voltage.
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