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Product Detailed Parameters
- Description：TRANS PNP 45V 3A TO-126-3
- Series：-
- Mfr：onsemi
- Package：Tube
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：3:00 AM
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：800mV @ 100mA, 1A
- Current - Collector Cutoff (Max)：100µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：40 @ 150mA, 2V
- Power - Max：30 W
- Frequency - Transition：3MHz
- 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 BD1766STU is a PNP epitaxial planar silicon transistor manufactured by onsemi. It features a maximum collector current of 3 A and a collector-emitter voltage rating of 45 V. The device is housed in a TO-126-3 through-hole package, designed for power dissipation up to 12.5 W. It operates within a temperature range of -55°C to +150°C junction temperature. Key electrical parameters include a DC current gain (hFE) ranging from 40 to 250 and a collector-emitter saturation voltage of 500 mV at specified currents.
Feature Summary
- High current handling capability suitable for demanding power switching applications
- Robust thermal performance with high power dissipation rating in standard through-hole packaging
- Wide operating temperature range ensuring reliability across diverse environmental conditions
Applications
- General purpose power switching circuits
- Linear regulator output stages
- Driver circuits for relays and solenoids
Procurement Notes
Verify the specific suffix 'STU' against the manufacturer's latest datasheet to confirm pinout and mechanical dimensions match your PCB footprint requirements. Ensure that the 45 V voltage rating aligns with the peak transient voltages present in your target circuit design to prevent breakdown during operation.
Selection Notes
Select this component when a PNP configuration with 3 A continuous current capacity is required. Compare the 45 V breakdown voltage against system supply rails. Evaluate the hFE range of 40-250 for base drive calculations. Consider the TO-126 package size for thermal management constraints relative to alternative surface-mount options.
Part Context
This part belongs to the BD176 series of general-purpose PNP transistors. It complements NPN counterparts like the BD175 series within the same product family. The series targets cost-effective solutions for medium-power applications requiring reliable switching and linear amplification capabilities in standard industrial electronics.
Replacement Considerations
Direct substitutes include BD17610STU and BD17516STU variants within the same manufacturer portfolio. Verify pin compatibility and exact current/voltage ratings before substitution. Cross-reference with generic equivalents only if electrical specifications and thermal characteristics are fully matched.
