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Product Detailed Parameters
- Description：TRANS NPN 60V 5A TO-220
- Series：-
- Mfr：Bourns Inc.
- Package：Tube
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：5:00 AM
- Voltage - Collector Emitter Breakdown (Max)：60 V
- Vce Saturation (Max) @ Ib, Ic：1.5V @ 1A, 5A
- Current - Collector Cutoff (Max)：300µA
- DC Current Gain (hFE) (Min) @ Ic, Vce：12 @ 3A, 4V
- Power - Max：2 W
- Frequency - Transition：-
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The BD539A-S is an NPN silicon power transistor manufactured by Bourns Inc., designed for complementary use with the BD540 series. It features a TO-220 package and supports a continuous collector current of 5 A. The device offers a power dissipation rating of 45 W at a case temperature of 25°C, with a maximum operating junction temperature range from -65°C to +150°C. Key electrical characteristics include a Vce saturation voltage of 1.5 V measured at Ib = 1 A and Ic = 5 A.
Feature Summary
- Designed for complementary use with the BD540 series
- High power dissipation capability of 45 W at 25°C case temperature
- Continuous collector current rating of 5 A
Applications
- Power switching circuits
- Complementary amplifier stages
- Industrial control systems
Procurement Notes
Verify the specific suffix 'S' against the manufacturer's official documentation to confirm the exact pinout configuration and thermal resistance values. Ensure that the TO-220 package dimensions match the target PCB footprint requirements. Cross-reference the Vce(sat) specifications under the intended load conditions to validate performance in the final application circuit design.
Selection Notes
Select this component when a high-current NPN power transistor is required for applications demanding robust thermal performance and reliable switching capabilities. Consider the complementary BD540 series for push-pull configurations. Evaluate the thermal management strategy to maintain the case temperature within safe limits during operation, ensuring the 45 W dissipation rating is not exceeded under worst-case conditions.
Part Context
The BD539A-S belongs to Bourns Inc.'s lineup of bipolar junction transistors (BJTs). These components are engineered for general-purpose power applications, providing a balance of current handling and voltage blocking capabilities. The product line emphasizes reliability and consistency, supporting various industrial and consumer electronic designs requiring efficient power control solutions.
Replacement Considerations
Consult official substitution guides for compatible NPN power transistors with matching current and voltage ratings. Verify pin compatibility and thermal characteristics before replacing the original component in existing designs.
