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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 Only
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：4.7 kOhms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 250µA, 2.5mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：250 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The DDTC143TCA-7 is an NPN pre-biased transistor from Diodes Incorporated, housed in a surface-mount SOT23 package. It integrates a single biasing resistor (R1) with a nominal value of 4.7 kΩ. The device features epitaxial planar die construction and operates within a temperature range of -55°C to +150°C. Key electrical specifications include a collector-emitter voltage (VCEO) of 50 V, a continuous collector current (IC) of 100 mA, and a power dissipation rating of 200 mW at 25°C ambient temperature. The DC current transfer ratio (hFE) ranges from 100 to 600 at IC = 1 mA.
Feature Summary
- Integrates a built-in biasing resistor (R1 only) to reduce external component count and PCB space.
- Utilizes epitaxial planar die construction for reliable performance.
- Comes in a compact SOT23 package suitable for automated surface-mount assembly.
Applications
- Switching applications requiring simplified base drive circuits.
- Driver stages for low-power loads or logic level translation.
- General-purpose amplification where integrated biasing is beneficial.
Procurement Notes
Verify the specific ordering suffix when sourcing components. The provided datasheet lists 'DDTC143TCA-7-F' as the active part number with a 3,000-unit reel quantity. Confirm that the '-F' suffix matches your supply chain requirements, as it indicates the standard tape-and-reel packaging format defined by the manufacturer.
Selection Notes
Select this component when a single NPN transistor with a fixed 4.7 kΩ input resistor is required. Ensure the application voltage does not exceed the 50 V collector-emitter limit and that the thermal design accommodates the 200 mW power dissipation capability. Verify compatibility with the SOT23 footprint during the layout phase.
Part Context
This component belongs to the DDTC(R1-ONLY) SERIES CA family, which consists of NPN pre-biased transistors available with various resistor values. The series offers complementary PNP types under the DDTA designation. The DDTC143TCA variant specifically denotes the 4.7 kΩ resistor configuration within this standardized product line.
Replacement Considerations
The datasheet confirms that the DDTC143TCAQ-7-F is an alternative part number within the same series. This variant shares the same SOT23 package and electrical characteristics but carries automotive qualification (AEC-Q101). Verify if the specific automotive grade is necessary for the target application before substitution.
