DB105ST-HF

Bridge Rectifier Overview

The DB105ST-HF is a surface-mount glass passivated bridge rectifier manufactured by Comchip Technology. It provides a maximum average forward rectified current of 1.0 A and a repetitive peak reverse voltage of 400 V. The device features a low forward voltage drop of 1.1 V at 1.0 A DC and supports a peak forward surge current of 30 A for an 8.3 ms half-sine wave. Operating temperatures range from -55°C to +150°C, with a typical thermal resistance of 40°C/W.

Bridge Rectifier Feature Summary

• Glass passivated chip junction construction
• Low forward voltage drop characteristics
• High current capability with high surge overload rating

Bridge Rectifier Applications

• Printed circuit board power supply designs
• General purpose AC to DC conversion
• Half-wave rectification circuits

Bridge Rectifier Procurement Notes

Verify the specific ordering suffix 'ST' corresponds to reel packaging rather than tube packaging when sourcing components. Confirm RoHS compliance status directly with the manufacturer or authorized distributor prior to procurement. Ensure the component matches the required 400V reverse voltage rating for the intended application circuit.

Bridge Rectifier Selection Notes

Select this component for applications requiring a 1.0 A continuous current rating with a 400 V blocking voltage in a compact surface-mount footprint. Consider the 40°C/W thermal resistance and derating curves if ambient temperatures exceed standard operating ranges. Verify that the DBS package dimensions align with the target PCB layout constraints.

Bridge Rectifier Part Context

This part belongs to the DB101S through DB107S series of SMD glass passivated bridge rectifiers. The series covers reverse voltage ratings from 50 V to 1000 V while maintaining a consistent 1.0 A forward current capability across all variants.

Bridge Rectifier Replacement Considerations

DB105S-HF

Bridge Rectifier FAQ

What is the maximum non-repetitive peak forward surge current?

The maximum non-repetitive peak forward surge current is 30 A for an 8.3 ms single half-sine wave superimposed on the rated load.

How does the forward current change with temperature?

The average forward current must be derated linearly as the ambient temperature increases above 40°C, reaching zero current capacity at 150°C.

What is the typical junction capacitance per element?

The typical junction capacitance per element is 500 pF, measured at 1.0 MHz and an applied reverse voltage of 4.0 V DC.