DF1508S-T

Bridge Rectifier Overview

The DF1508S-T is a single-phase standard recovery bridge rectifier manufactured by Diodes Incorporated. It features an 800V peak repetitive reverse voltage and supports a 1.5A average forward rectified current at +40°C ambient temperature. The device utilizes a glass-passivated die construction within a surface-mount DF-S package, measuring approximately 7.9mm by 6.5mm with a height of 2.6mm. Electrical characteristics include a maximum forward voltage drop of 1.1V at rated current and a peak reverse current of 10µA at +25°C. It withstands a non-repetitive peak forward surge current of 50A for 8.3ms and operates within a junction temperature range of -55°C to +150°C.

Bridge Rectifier Feature Summary

• Glass passivated die construction ensures low leakage current and high reliability under reverse bias conditions.
• Designed specifically for surface-mount applications to facilitate automated assembly processes.
• Capable of handling high surge overload ratings up to 50A peak for transient protection.

Bridge Rectifier Applications

• AC-DC power supply circuits requiring high-voltage isolation
• General-purpose rectification in industrial control systems
• Battery charging equipment operating at elevated voltages

Bridge Rectifier Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration. The 'T' suffix indicates tape and reel packaging containing 1500 units per carrier. Confirm compliance requirements such as RoHS 3 status and lead-free finish specifications against project standards before finalizing procurement orders.

Bridge Rectifier Selection Notes

Select this component when circuit designs require an 800V blocking capability combined with a 1.5A continuous current rating in a compact surface-mount footprint. Ensure thermal management strategies account for the specified thermal resistance from junction to ambient. Verify that the operating frequency and load characteristics align with the standard recovery profile of the device.

Bridge Rectifier Part Context

This part belongs to the DF15xxxS-T series of surface-mount bridge rectifiers produced by Diodes Incorporated. The series spans voltage ratings from 50V to 1000V while maintaining a consistent 1.5A current capacity and standardized DF-S package dimensions across all variants.

Bridge Rectifier Replacement Considerations

Direct substitutes must match the 800V reverse voltage, 1.5A current rating, and DF-S package outline. Verify that alternative components share identical pin configurations and thermal characteristics to ensure mechanical and electrical compatibility without redesigning the PCB layout.

Bridge Rectifier FAQ

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

The device can withstand a non-repetitive peak forward surge current of 50A for an 8.3ms single half-sine wave superimposed on the rated load.

How does the average forward current change with temperature?

The rated 1.5A current is specified at an ambient temperature of +40°C. Derating curves provided in the datasheet indicate that the current capacity decreases as the ambient temperature rises above this threshold.

What is the typical total capacitance per element?

The typical total capacitance per element is 25 pF, measured at 1.0MHz with an applied reverse voltage of 4.0V DC.