BAS21A

Diode Arrays Overview

The BAS21A is a high-speed switching diode manufactured by Taiwan Semiconductor Corporation, designed for general-purpose applications. It features a single PN junction configuration housed in an SOT-23 surface-mount package. Key electrical parameters include a maximum repetitive peak reverse voltage of 250 V and a continuous forward current rating of 200 mA. The device exhibits a fast reverse recovery time of 50 ns and a low forward voltage drop of 1.25 V at 200 mA. It supports a non-repetitive peak forward surge current of 2.5 A and operates within a junction temperature range of -55 °C to +150 °C.

Diode Arrays Feature Summary

• High-speed switching capability with a reverse recovery time of 50 ns
• Compact SOT-23 surface-mount package suitable for automated assembly
• Low leakage current characteristics for efficient performance
• Robust construction supporting high reverse voltage up to 250 V

Diode Arrays Applications

• General-purpose switching circuits
• Voltage clamping applications
• Reverse polarity protection
• High-speed signal processing

Diode Arrays Procurement Notes

Verify the specific manufacturer designation, as BAS21A is a JEDEC standard part produced by multiple vendors including Nexperia, Micro Commercial Components, and Panjit. Confirm that the supplier provides documentation from Taiwan Semiconductor Corporation specifically, as datasheet parameters may vary slightly between manufacturers. Ensure the package type matches the required SOT-23 footprint and check for automotive qualification requirements if applicable to the target application.

Diode Arrays Selection Notes

Select this component when a small-form-factor switching diode with a 250 V reverse voltage rating is required. The 50 ns reverse recovery time makes it suitable for moderate-frequency switching applications. Compare the forward voltage drop and leakage current specifications against alternative suppliers to ensure compatibility with circuit efficiency targets. Verify thermal dissipation capabilities within the SOT-23 package for the expected operating conditions.

Diode Arrays Part Context

The BAS21A belongs to the BAS21 series of silicon planar high-speed switching diodes. These devices are widely used in consumer electronics, telecommunications, and industrial equipment due to their reliability and compact size. The series typically includes variants with different voltage ratings, such as BAS19 and BAS20, offering flexibility for various circuit designs requiring small-signal switching functions.

Diode Arrays Replacement Considerations

Direct substitutes include BAS21A parts from other manufacturers such as Nexperia (BAS21,215), Micro Commercial Components (BAS21A-TP), and Panjit (BAS21A-AU). Ensure pinout compatibility and verify that electrical parameters like reverse recovery time and forward voltage fall within acceptable tolerances for the specific application.