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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 50V SOT323
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT),Cut Tape (CT)
- Resistors Included：R1 and R2
- Transistor Type：PNP - 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)：10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：30 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max)：500nA
- Frequency - Transition：250 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SOT-323
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Overview
The DDTA143XUA-7-F is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-323 package. It integrates biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 10 kΩ. The device supports a maximum supply voltage (VCC) of -50 V and a continuous output current (IC) of -100 mA. Power dissipation is rated at 200 mW, with a thermal resistance (RθJA) of 625 °C/W. Operating and storage temperatures range from -55°C to +150°C. The component utilizes epitaxial planar die construction and features a gain-bandwidth product of 250 MHz.
Feature Summary
- Integrates built-in biasing resistors with unequal values (R1≠R2) for simplified circuit design
- Utilizes epitaxial planar die construction for reliable performance
- Complementary NPN types are available within the DDTC series
Applications
- General-purpose switching applications
- Driver circuits requiring integrated biasing
- Logic interface circuits
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm packaging details. The datasheet lists the DDTA143XUA-7-F variant as being supplied in a 3000-unit tape and reel format within the SOT-323 case. Ensure that the procurement specifications align with the manufacturer's current shipping configurations to avoid discrepancies in bulk handling requirements.
Selection Notes
Select this component when a PNP digital transistor with specific internal resistor ratios is required. The DDTA143XUA variant provides a 4.7 kΩ input resistor and a 10 kΩ base-emitter resistor. Consider the -100 mA current limit and -50 V voltage rating during design. Verify that the SOT-323 footprint matches the target PCB layout constraints.
Part Context
This part belongs to the DDTA (R1≠R2 Series) UA family of pre-biased transistors. It is distinguished by its specific resistor combination of 4.7 kΩ and 10 kΩ. The 'UA' suffix indicates the SOT-323 surface mount package. This series offers a compact alternative to discrete resistor-transistor networks, reducing board space and assembly steps.
Replacement Considerations
Check for direct equivalents such as the DDTA143FUA or DDTA143ZUA if different resistor values are acceptable. Ensure any substitute maintains the SOT-323 package and PNP polarity. Verify that the replacement part meets the same electrical ratings for voltage, current, and power dissipation.
