TDS3621LP.C

Overview

The TDS3621LP.C is a unidirectional transient voltage suppression diode from Semtech's SurgeSwitch series, designed for electrical overload protection. It features a 36 V operating voltage and utilizes a DFN-2 surface-mount package. Key electrical parameters include a breakdown voltage of 43.5 V, a clamping voltage of 49.7 V, and a peak pulse current rating of 24 A. The device handles a peak pulse power of 1.152 kW with a capacitance of 80 pF.

Feature Summary

• Maintains stable clamping voltage across extended temperature ranges
• Provides robust protection against electrical overstress events
• Utilizes compact surface-mount packaging for space-constrained designs

Applications

• Protection for USB PD voltage bus lines
• IO-Link interface circuit safeguarding
• Industrial sensor signal line protection
• PLC I/O module transient suppression

Procurement Notes

Verify the specific suffix designation to confirm the exact variant configuration. Ensure compatibility with the target operating voltage range and thermal management requirements. Cross-reference the datasheet specifications against the application's peak pulse current demands to guarantee adequate surge handling capability without compromising signal integrity during normal operation.

Selection Notes

Select this component when designing circuits requiring reliable EOS protection in industrial or IoT environments. The fixed clamping characteristic simplifies design margins compared to traditional TVS diodes. Consider the low capacitance value for applications where signal fidelity is critical alongside surge protection needs.

Part Context

This part belongs to Semtech's SurgeSwitch product family, which introduces innovative architectures for consistent clamping performance. Unlike conventional TVS devices, these components are engineered to maintain stability across wide temperature variations and high current pulses, addressing limitations in harsh industrial and telecommunications settings.

Replacement Considerations

Consult official substitution lists for compatible SurgeSwitch variants such as TDS2211P, TDS3311P, TDS4501P, or TDS5801P based on required operating voltage levels. Verify pinout and package dimensions match before integration.