HT36ARP

Overview

The HT36ARP is a DIAC thyristor manufactured by Littelfuse Inc., housed in a DO-35 radial lead package. It features a breakover voltage range of 32 to 40V and supports a breakover current of 15µA. The device is rated for 2A peak current and operates within a temperature range of -40°C. This component is classified under Diacs and SIDACs, designed for triggering applications requiring precise voltage thresholds.

Feature Summary

• Provides symmetrical bidirectional switching characteristics for AC phase control
• Utilizes a compact DO-35 axial leaded package for through-hole mounting
• Ensures reliable triggering with defined breakover voltage parameters

Applications

• Lighting dimmer circuits
• Motor speed control systems
• Thyristor gate triggering networks

Procurement Notes

Verify the obsolete status indicated by some distributors against official Littelfuse documentation before procurement planning. Confirm the DO-35 package compatibility with existing PCB footprints. Ensure the 32-40V breakover range aligns with circuit design requirements. Check for updated replacement recommendations from the manufacturer due to potential lifecycle changes.

Selection Notes

Select this component when a specific DIAC with a 32-40V breakover threshold is required for AC control applications. The DO-35 package suits standard through-hole assembly processes. Consider the 2A current rating for appropriate load handling. Validate that the -40°C operating minimum meets environmental constraints for the target deployment scenario.

Part Context

This part belongs to the DIAC/SIDAC category within Littelfuse's circuit protection and power control portfolio. It serves as a trigger device for silicon-controlled rectifiers (SCRs) and triacs. The DO-35 form factor represents a traditional axial leaded style common in legacy and industrial electronics designs.

Replacement Considerations

Consult Littelfuse official documentation for confirmed substitute part numbers. Verify electrical parameter equivalence including breakover voltage and current ratings. Ensure package compatibility if direct pin-to-pin substitution is required.