BAV21W-G3-18

Overview

The BAV21W-G3-18 is a high-voltage small signal switching diode manufactured by Vishay Semiconductors. It features a continuous reverse voltage of 200 V and a repetitive peak reverse voltage of 250 V. The device supports a DC forward current of 250 mA and a surge forward current of 1 A. Electrical characteristics include a maximum reverse recovery time of 50 ns, a typical leakage current of 100 nA at 200 V, and a diode capacitance of 1.5 pF at 0 V and 1 MHz. It operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Silicon epitaxial planar construction for general-purpose applications
• High-voltage capability with 200 V continuous reverse voltage rating
• Fast switching performance with 50 ns maximum reverse recovery time
• Automotive-grade qualification available under AEC-Q101 standards

Applications

• General purpose switching circuits in industrial equipment
• Signal processing in oscilloscopes and digital voltmeters
• Video output stages in color television systems

Procurement Notes

Verify the specific suffix 'G3' indicates compliance with RoHS directives and material categorization requirements as defined by Vishay. Confirm that the '-18' packaging code corresponds to the 10,000-unit reel option on 13-inch tape. Ensure the component meets the required environmental operating temperatures for the intended application environment before finalizing procurement.

Selection Notes

Select this component when a single diode configuration requires high reverse voltage blocking capabilities up to 250 V. The SOD-123 package offers a compact footprint suitable for surface-mount designs. Consider the 50 ns reverse recovery time for moderate-speed switching applications where low capacitance is beneficial. Verify thermal dissipation limits against ambient temperature conditions.

Part Context

This part belongs to the BAV21W-G series of small signal switching diodes from Vishay Semiconductors. The series includes variants with different reverse voltage ratings, such as the BAV19W-G (100 V) and BAV20W-G (150 V). All models share similar electrical characteristics and mechanical packaging in the SOD-123 case, differing primarily in their voltage handling specifications.

Replacement Considerations

Cross-reference with Nexperia BAV21 devices which offer similar SOD-27 or SOD-123 encapsulation options. Verify pinout compatibility and ensure the substitute component meets the 250 V repetitive peak reverse voltage requirement. Check if the alternative manufacturer provides equivalent AEC-Q101 qualification if automotive reliability is required.