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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 50V 100MA
- Series：*
- Mfr：onsemi
- Package：Bulk
- Resistors Included：-
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：-
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：-
- Power - Max：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The DTA144E is a PNP Digital Transistor with built-in resistors (BRT) manufactured by onsemi. It integrates a single transistor with a monolithic bias network consisting of two resistors: a series base resistor and a base-emitter shunt resistor. The device features an input resistance (R1) of 47 kΩ and an emitter-base resistance (R2) of 47 kΩ, maintaining a 1:1 ratio. Key electrical specifications include a maximum collector current (IC) of -0.1 A, a supply voltage (VCC) of -50 V, and a minimum DC current gain (hFE) of 68. The component is designed for surface mount mounting and offers a power dissipation capability suitable for compact digital switching applications.
Feature Summary
- Integrates a PNP transistor with a monolithic bias resistor network to replace discrete components
- Features equal value internal resistors (R1=R2=47kΩ) for simplified circuit design
- Supports high-voltage operation with a -50V supply rating
Applications
- Digital logic interface circuits requiring level shifting or buffering
- General-purpose switching applications in consumer electronics
- Driver stages for relays, LEDs, or small loads in embedded systems
Procurement Notes
Verify the specific ordering suffix when purchasing, as variations such as DTA144EE or DTA144EM3 may exist with different packaging or automotive qualifications. Confirm that the selected variant meets the required temperature range and reliability standards for the target application before finalizing procurement.
Selection Notes
Select this component when a compact solution is needed to drive a load from a digital logic output without external biasing resistors. Ensure the required collector current does not exceed 100mA and the voltage ratings align with the system's operational limits. Consider the SOT-323 or similar package availability based on board space constraints.
Part Context
This part belongs to onsemi's family of Bias Resistor Transistors (BRT), which are designed to simplify circuit layouts by combining a transistor and bias resistors into a single package. These devices are commonly used to reduce component count and assembly time in digital switching applications compared to using discrete transistors with external resistors.
Replacement Considerations
Direct pin-compatible substitutes include the MUN2113T1 from onsemi, which shares similar electrical characteristics and package type. Other manufacturers offer equivalent BRT devices, but verification of the R1/R2 ratio and hFE specifications is required to ensure functional compatibility.
