BD241A-S

Overview

The BD241A-S is an NPN bipolar junction transistor manufactured by Bourns Inc. It is designed for general-purpose amplification and switching applications. The component features a maximum collector-emitter voltage of 60V and a continuous collector current rating of 3A. It supports a peak collector current of 5A and offers a power dissipation capacity of 40W at a case temperature of 25°C.

Feature Summary

• NPN bipolar junction transistor configuration
• Designed for complementary use with the BD242 series
• General-purpose amplification and switching capabilities

Applications

• General-purpose amplification circuits
• Electronic switching applications
• Complementary pairing with PNP transistors

Procurement Notes

Verify availability status as the BD241A-S is listed as obsolete and no longer manufactured by Bourns Inc. Confirm specific manufacturer origin, as STMicroelectronics also produces a part designated BD241A. Ensure substitute components meet required electrical specifications for replacement designs.

Selection Notes

Select this component only if legacy compatibility is required or if stock from previous production runs is available. Evaluate alternative NPN power transistors with similar voltage and current ratings for new designs. Consider thermal management requirements given the 40W power dissipation specification at specified case temperatures.

Part Context

The BD241A-S belongs to the family of NPN power transistors intended for medium-power applications. It is often paired with its PNP counterpart, the BD242, to form complementary push-pull amplifier stages. The device utilizes a standard through-hole package suitable for general electronic assemblies requiring robust switching performance.

Replacement Considerations

Public confirmed substitutes include the 2N6292G from onsemi. Verify pinout compatibility and electrical parameter equivalence before implementation in existing circuit designs.