BD244BG

Overview

The onsemi BD244BG is a silicon PNP power transistor housed in a TO-220C package. It serves as the complement to the BD243 series, designed for medium-power linear and switching applications. The device features a collector connected to the mounting base for efficient thermal dissipation. Key electrical characteristics include specific collector-base and collector-emitter voltage ratings defined by the suffix variant, with absolute maximum ratings established at an ambient temperature of 25°C.

Feature Summary

• Complements the BD243/A/B/C series for matched performance
• TO-220C package facilitates direct mounting to heatsinks
• Collector terminal electrically connected to the physical mounting base

Applications

• Medium power linear amplifier circuits
• Power switching applications requiring high current handling
• Complementary pairing with NPN counterparts in push-pull stages

Procurement Notes

Verify the specific voltage rating suffix (A, B, or C) required for the target application, as these variants differ in breakdown voltage specifications. Confirm that the TO-220C package insulation requirements align with the system's isolation needs, noting the collector-to-case connection. Ensure thermal management solutions account for the device's power dissipation limits under expected operating conditions.

Selection Notes

Select this component when a PNP power transistor is needed to complement existing BD243-series NPN designs. The TO-220C form factor is suitable for through-hole mounting and direct heatsink attachment. Evaluate the specific voltage class (BD244A, BD244B, or BD244C) against the circuit's peak reverse voltage requirements to ensure adequate safety margins.

Part Context

The BD244 series belongs to onsemi's lineup of discrete silicon power transistors engineered for robust performance in analog and digital power stages. These devices are standard replacements in legacy equipment and industrial control systems where medium-power bipolar junction transistors are specified. The TO-220C package remains a common choice for applications requiring reliable thermal transfer without complex mounting hardware.