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Product Detailed Parameters
- Description：TRANS NPN 100V 25A SOT-93
- Series：-
- Mfr：onsemi
- Package：Bulk
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：25 A
- Voltage - Collector Emitter Breakdown (Max)：100 V
- Vce Saturation (Max) @ Ib, Ic：4V @ 5A, 25A
- Current - Collector Cutoff (Max)：1mA
- DC Current Gain (hFE) (Min) @ Ic, Vce：25 @ 1.5A, 4V
- Power - Max：125 W
- Frequency - Transition：3MHz
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-218-3
- Supplier Device Package：SOT-93
- Grade：-
- Qualification：-
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Overview
The BD249CG is a silicon NPN power transistor manufactured by ISC, designed for high-current switching applications. It features a TO-3PN package and supports a continuous collector current of 25 A with a collector-emitter voltage rating of 100 V. The device provides a maximum power dissipation of 125 W at a case temperature of 25°C. It serves as the complementary counterpart to the BD250/A/B/C series, offering robust performance in power amplifier and regulator circuits.
Feature Summary
- High current handling capability with 25 A continuous collector current
- Complementary design matching BD250 series specifications
- Robust thermal management via TO-3PN metal case package
Applications
- Power amplifier output stages
- Voltage regulator circuits
- General-purpose high-power switching
Procurement Notes
Verify manufacturer origin as ISC rather than onsemi, as datasheet records indicate ISC production. Confirm package integrity for TO-3PN mounting requirements. Ensure compatibility with existing heat sink infrastructure given the 125 W dissipation rating. Validate pinout alignment with BD250 series counterparts for direct replacement scenarios.
Selection Notes
Select this component when designing circuits requiring matched NPN/PNP pairs from the BD249/BD250 family. Consider the TO-3PN package constraints for board layout and thermal interface materials. Evaluate the 100 V breakdown voltage against peak transient loads in the specific application environment.
Part Context
This part belongs to the legacy bipolar power transistor category, often utilized in industrial and audio equipment. It complements the PNP BD250 series, enabling push-pull configurations. The TO-3PN package ensures reliable operation under high thermal stress conditions typical of linear power applications.
Replacement Considerations
Direct substitutes include BD249A, BD249B, and BD250 series variants where complementary pairing is required. Verify voltage ratings (45V/60V/100V) match circuit demands before substitution.
