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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 200MW SOT323
- Series：*
- Mfr：Diodes Incorporated
- Package：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 DDTA123EUA-7 is a PNP pre-biased small signal surface mount transistor manufactured by Diodes Incorporated. It features built-in biasing resistors with nominal values of R1 = 2.2 kΩ and R2 = 2.2 kΩ, resulting in a resistance ratio of 1. The device utilizes an epitaxial planar die construction within a SOT-323 package. Key electrical characteristics include a maximum supply voltage (VCC) of -50 V, a continuous collector current (IC) of -100 mA, and a power dissipation (Pd) of 200 mW at 25°C ambient temperature. The gain-bandwidth product (fT) is specified at 250 MHz under standard test conditions.
Feature Summary
- Integrates dual biasing resistors (R1 and R2) to simplify circuit design and reduce component count.
- Utilizes epitaxial planar die construction for reliable performance in surface mount applications.
- Offers complementary NPN types available within the same series for flexible system implementation.
Applications
- General-purpose switching circuits requiring integrated base drive.
- Driver stages for low-power loads where simplified biasing is beneficial.
- Logic interface applications utilizing pre-biased configurations.
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm packaging details. The datasheet indicates that the '7' suffix corresponds to tape and reel packaging containing 3000 units. Confirm RoHS compliance status and manufacturing date codes relevant to green molding compound requirements if applicable to the project specifications.
Selection Notes
Select this component when a PNP configuration with equal internal biasing resistors is required. Ensure the application operates within the -50 V supply limit and -100 mA current rating. Consider the thermal resistance of 625 °C/W and derating curves for high-temperature environments. Verify compatibility with the SOT-323 footprint during PCB layout.
Part Context
This part belongs to the DDTA (R1 = R2 Series) UA family from Diodes Incorporated. It serves as the PNP counterpart to the DDTC NPN series. The device is designed for general-purpose digital switching applications, offering a compact solution compared to discrete resistor-transistor combinations.
Replacement Considerations
Direct substitutes within the same manufacturer's portfolio include other members of the DDTA1xxEUA series with different resistor values, such as DDTA143EUA or DDTA114EUA, provided the resistance values match the circuit requirements. Cross-manufacturer replacements require verification of pinout, voltage ratings, and hFE characteristics.
