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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 200MW SOT323
- Series：*
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT)
- 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 DDTA143FUA-7 is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in an SOT-323 package. The device integrates internal biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 22 kΩ. Key electrical ratings include a maximum supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and power dissipation (Pd) of 200 mW at 25°C ambient temperature. The operating junction and storage temperature range spans from -55°C to +150°C.
Feature Summary
- Integrates two distinct biasing resistors (R1 ≠ R2) within a single compact surface-mount package
- Utilizes epitaxial planar die construction for reliable performance
- Designed as a complementary NPN type available in the DDTC series
Applications
- General-purpose switching applications requiring integrated biasing
- Driver circuits for low-power loads
- Logic interface buffering between microcontrollers and peripheral devices
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm packaging details. The datasheet indicates that standard variants are supplied in tape and reel formats containing 3000 units per reel. Confirm RoHS compliance status and manufacturing date codes when sourcing components to ensure adherence to material specifications.
Selection Notes
Select this component when a PNP configuration with unequal biasing resistors is required. Ensure the application voltage does not exceed the -50 V rating and that thermal management accommodates the 200 mW power dissipation limit. Verify that the SOT-323 footprint aligns with the PCB layout requirements.
Part Context
This part belongs to the DDTA (R1≠R2 Series) UA family of pre-biased transistors. It serves as a discrete solution replacing multiple external components, simplifying circuit design. The 'UA' designation specifically identifies the SOT-323 case style used for this product line.
Replacement Considerations
Direct functional substitutes within the same series include DDTA143XUA and DDTA143ZUA, which share the SOT-323 package but differ in resistor values. Cross-reference with the DDTC series for complementary NPN configurations if polarity reversal is needed.
