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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 DDTA124GUA-7 is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-323 package. It features an epitaxial planar die construction with a built-in biasing resistor (R2 only) of 22 kΩ nominal value. The device supports a collector-emitter voltage (VCEO) of -50 V and a continuous collector current (IC) of -100 mA. Power dissipation is rated at 200 mW with a thermal resistance (RθJA) of 625 °C/W. The DC current gain (hFE) minimum is 56 at IC = -5 mA. Operating and storage temperatures range from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Integrated single biasing resistor (R2) simplifies circuit design
- Lead-free and RoHS compliant manufacturing
- Green molding compound with UL flammability classification 94V-0
Applications
- Switching applications requiring compact surface mount solutions
- Driver circuits for logic interfaces
- General purpose amplification in portable electronics
Procurement Notes
Verify the specific ordering suffix against official documentation, as packaging quantities and tape/reel specifications may vary by variant. Confirm compliance requirements such as RoHS status and green material declarations directly with the manufacturer or authorized distributors prior to procurement. Ensure the component meets the required moisture sensitivity level and thermal handling capabilities for the intended assembly process.
Selection Notes
Select this component when a PNP digital transistor with a 22 kΩ internal base resistor is required in an SOT-323 footprint. Consider the -50 V voltage rating and -100 mA current limit for load compatibility. Evaluate the thermal resistance and power dissipation limits relative to the ambient temperature conditions. Compare hFE characteristics against circuit gain requirements to ensure proper saturation or active region operation.
Part Context
This part belongs to the DDTA R2-only series of pre-biased transistors from Diodes Incorporated. It complements the DDTC NPN series, offering a matched pair solution for push-pull configurations. The UA designation indicates the SOT-323 case style. This series is designed to reduce external component count and PCB area in digital switching applications.
Replacement Considerations
Direct substitutes include other DDTA124 variants with identical electrical characteristics but different packaging, such as DDTA124TCA or DDTA124TE. Verify pinout compatibility and thermal performance when replacing with components from other manufacturers. Ensure the replacement maintains the 22 kΩ internal resistor value and SOT-323 dimensions.
