BD436

Overview

The BD436 is a complementary silicon power transistor of the PNP type, manufactured by STMicroelectronics. It belongs to a series that includes NPN counterparts such as the BD433, BD435, and BD437. These devices are constructed using silicon epitaxial-base technology and are housed in a Jedec SOT-32 plastic package. The component is designed for medium power linear and switching applications. While the BD433 variant is specifically noted for suitability in car-radio output stages, the entire family shares these general application intents.

Feature Summary

• Complementary PNP configuration within a matched pair series
• Silicon epitaxial-base construction for power handling
• Jedec SOT-32 plastic package for compact integration

Applications

• Medium power linear applications
• Switching applications
• Car-radio output stages (family context)

Procurement Notes

Verify the specific part status, as documentation indicates the BD436 may be classified as obsolete in certain sources while other family members remain active. Confirm the exact datasheet version and manufacturer source to ensure compatibility with current design requirements. Cross-reference the complementary NPN types if a matched pair is required for the circuit design.

Selection Notes

Select this component when a PNP power transistor in an SOT-32 package is required for medium power tasks. Consider the complementary NPN variants like the BD433 or BD435 if symmetrical push-pull configurations are needed. Ensure the application aligns with linear or switching operational modes suitable for epitaxial-base silicon transistors.

Part Context

The BD436 is part of a complementary set of silicon power transistors from STMicroelectronics. It serves as the PNP counterpart to NPN types including the BD433, BD435, and BD437. This family is characterized by its use in medium power scenarios and its adoption of the standard Jedec SOT-32 plastic packaging format for space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify availability of the BD436 itself as it is marked obsolete in some records. Check for direct pin-compatible alternatives from the same manufacturer's portfolio if the original is discontinued.