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Product Detailed Parameters
- Description：TRANS NPN 80V 1.5A SOT-32-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：1.5 A
- Voltage - Collector Emitter Breakdown (Max)：80 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：SOT-32-3
- Grade：-
- Qualification：-
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Overview
The BD139-16 is an NPN silicon epitaxial planar transistor manufactured by STMicroelectronics, housed in a SOT-32 plastic package. It features a collector-emitter voltage of 80 V and a continuous collector current of 1.5 A. The device has a maximum power dissipation of 1.25 W at ambient temperature and 12.5 W at case temperature. DC current gain ranges from 25 to 250, with the -16 suffix indicating a pre-selected gain group of 100 to 250 at 150 mA.
Feature Summary
- Designed for audio amplifiers and drivers utilizing complementary or quasi-complementary circuits
- Manufactured using epitaxial planar technology
- Pre-selected in DC current gain groups
Applications
- Audio amplifiers
- Driver circuits
- Complementary circuit configurations
Procurement Notes
Verify the specific ordering code BD139-16 against the manufacturer datasheet to confirm the hFE grouping requirements. Ensure the SOT-32 package dimensions match the PCB layout constraints. Confirm that the thermal resistance values align with the intended heat dissipation strategy for the application environment.
Selection Notes
Select this component when an NPN transistor with 80 V rating and 1.5 A current capacity is required for general-purpose applications. The BD139-16 variant offers a higher minimum DC current gain compared to standard versions, making it suitable for driver stages requiring consistent amplification characteristics within the specified gain range.
Part Context
The BD139-16 belongs to the BD135-BD140 family of complementary low voltage transistors. It serves as the NPN counterpart to the BD140 PNP transistor. This family is designed for use in general-purpose applications, particularly where complementary pairs are needed for push-pull or quasi-complementary output stages in audio equipment.
Replacement Considerations
The BD139 (standard version) is a functional substitute but lacks the specific pre-selected high-gain grouping of the -16 suffix. For direct replacement maintaining identical electrical performance, verify availability of other BD139-16 units or equivalent NPN transistors with matching 80V/1.5A ratings and similar hFE specifications.
