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Product Detailed Parameters
- Description：TRANS NPN 45V 1.5A TO-126-3
- Series：-
- Mfr：onsemi
- Package：Tube
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：1.5 A
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：40 @ 150mA, 2V
- Power - Max：1.25 W
- Frequency - Transition：-
- Operating Temperature：150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-225AA, TO-126-3
- Supplier Device Package：TO-126-3
- Grade：-
- Qualification：-
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Overview
The onsemi BD1356STU is an NPN silicon epitaxial planar power transistor housed in a TO-126 (SOT-32) three-pin package designed for through-hole mounting. It features a maximum collector current of 1.5 A and a collector-emitter voltage rating of 45 V, with a complementary base voltage of 45 V. The device supports a maximum power dissipation of 12.5 W and operates at junction temperatures up to 150°C. With a minimum DC current gain (hFE) of 40, it serves as a robust component for general-purpose switching and amplification applications.
Feature Summary
- Epitaxial planar construction ensures high reliability and stable performance under varying thermal conditions.
- Designed specifically for audio amplifier and driver circuits utilizing complementary or quasi-complementary topologies.
- Pre-selected DC current gain facilitates consistent circuit behavior without requiring extensive binning.
Applications
- Audio amplifier output stages
- General-purpose power switching circuits
- Driver circuits for complementary configurations
Procurement Notes
Verify the specific suffix against official datasheets to confirm pinout and electrical tolerances. Ensure the procurement channel provides original manufacturer documentation to validate authenticity. Cross-reference the part number with the latest onsemi release notes to confirm availability status and any potential obsolescence notices before finalizing orders.
Selection Notes
Select this component when a 1.5 A NPN transistor with 45 V breakdown is required in a TO-126 package. Consider the complementary BD136 series for matched pairs in push-pull configurations. Evaluate thermal management requirements given the 12.5 W dissipation limit and ensure the application environment stays within the specified operating temperature range.
Part Context
This part belongs to the BD135/BD139 family of NPN power transistors manufactured by onsemi. These devices are widely recognized for their use in audio and general-purpose power applications. The BD1356STU variant specifically denotes the 45 V rating version packaged in TO-126, distinct from higher voltage variants like the BD139 which offer 80 V ratings.
Replacement Considerations
Official substitutes include the BD13516STU for identical electrical characteristics in the same package. Other compatible options may include generic equivalents from other manufacturers that meet the 1.5 A, 45 V, TO-126 specifications, provided pinouts and thermal resistance values are verified.
