HT32BRP

Overview

The HT32BRP is a DIAC thyristor manufactured by Littelfuse Inc., designed for triggering triacs and SCRs in AC power control applications. It features a bidirectional breakover voltage range of 30 to 34V, allowing for symmetrical switching characteristics. The device supports a peak output current of 2A and operates within a junction temperature range of -40°C to 125°C. It utilizes a DO-35 axial glass package with a breakover current of 15 µA, ensuring reliable performance in light dimmer, motor speed control, and general AC switching circuits.

Feature Summary

• Bidirectional breakover voltage functionality for symmetrical AC signal triggering
• High peak output current capability of 2A for robust gate drive
• Axial glass encapsulation providing environmental protection and thermal stability

Applications

• Triac and SCR trigger circuits
• Light dimmer controls
• Motor speed controllers

Procurement Notes

Verify the specific manufacturer part number HT32BRP against official Littelfuse documentation to confirm component authenticity and specifications. Check for any obsolete status or lifecycle notices that may affect long-term availability. Ensure the DO-35 package type matches the design requirements. Confirm compliance with relevant safety standards before integration into final products.

Selection Notes

Select this component when a precise bidirectional breakover voltage between 30V and 34V is required for AC phase control. The 2A peak current rating suits applications needing moderate gate drive strength. Consider the DO-35 package size for board space constraints. Evaluate the operating temperature range to ensure suitability for the intended environmental conditions.

Part Context

The HT32BRP belongs to the DIAC family of devices, which are used primarily for triggering other thyristors. These components provide a sharp transition from high impedance to low impedance at a specific voltage threshold. This behavior is critical for creating consistent firing angles in AC power regulation systems, distinguishing them from unidirectional diodes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic DIAC equivalents only if they match the 30-34V breakover voltage, 2A peak current, and DO-35 package specifications exactly.