BR100-03LLD

Overview

The BR100-03LLD is a Surface Mount Device (SMD) Trigger Diode, also known as a Diac, manufactured by Diotec Semiconductor. It is designed for bidirectional triggering applications with a peak repetitive current rating of ±2 A and a total power dissipation of 150 mW. The device features a breakover voltage (VBO) of 32 V and a breakover voltage difference (ΔVBO) of 5 V. It operates within a junction temperature range up to a maximum of 125°C. Thermal resistance from junction to ambient is typically 150 K/W when mounted on a PCB with 25 mm² copper pads per terminal, while the junction-to-terminal thermal resistance is typically 70 K/W.

Feature Summary

• Bidirectional trigger capability suitable for AC switching control
• Compact surface mount construction for automated assembly
• Defined breakover voltage tolerance for consistent firing characteristics

Applications

• Triggering silicon controlled rectifiers (SCRs) in light dimmers
• Gate triggering for triacs in motor speed controllers
• AC phase control circuits in consumer appliances

Procurement Notes

Verify component authenticity through authorized Diotec distributors or direct manufacturer channels. Confirm RoHS compliance and ELV directive adherence prior to integration. Ensure storage conditions maintain moisture sensitivity levels appropriate for SMD packaging. Validate datasheet revisions against specific production batches to ensure parameter consistency.

Selection Notes

Select the BR100-03LLD when a 32 V breakover voltage is required for gate drive circuits. Compare ΔVBO specifications against circuit requirements to ensure stable triggering thresholds. Evaluate thermal management needs based on the 150 K/W junction-to-ambient resistance value. Consider the ±2 A peak current limit relative to the load being switched.

Part Context

This component belongs to Diotec's SMD Trigger-Diode family, specifically the BR100 series. It serves as a bidirectional trigger device for controlling power semiconductors like SCRs and Triacs. The part is distinct from unidirectional diodes and standard Zener diodes due to its symmetrical breakdown characteristics in both polarities.

Replacement Considerations

Check for equivalent Diac components with matching 32 V breakover voltage and similar ΔVBO values. Verify that substitute parts support the same ±2 A peak current and 125°C maximum junction temperature. Ensure physical footprint compatibility if replacing in existing PCB layouts.