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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 200MW SOT23-3
- 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 DDTA143ZCA-7-F is a PNP pre-biased transistor from Diodes Incorporated, housed in an SOT23 surface-mount package. It integrates internal biasing resistors with nominal values of R1 = 4.7 kΩ and R2 = 47 kΩ. The device supports a maximum supply voltage (VCC) of -50 V and a continuous output current (Iout) of -100 mA. Electrical characteristics include a minimum DC current gain (Gl) of 80 at -10 mA collector current and a transition frequency (fT) of 250 MHz. Power dissipation is rated at 200 mW, with an operating temperature range spanning from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Integrated biasing resistors simplify circuit design
- Surface-mount package optimized for automated assembly
Applications
- General-purpose switching applications
- Driver circuits for low-power loads
- Logic level translation interfaces
Procurement Notes
Verify the complete part number including suffixes such as '-7-F' against official distributor catalogs to ensure correct packaging and RoHS compliance. Confirm that the specific ordering code matches the required resistor ratios and package type before finalizing procurement orders.
Selection Notes
Select this component when a PNP configuration with integrated base and emitter resistors is required. Ensure the 4.7 kΩ input resistance and 47 kΩ feedback resistance align with the target drive current and logic levels. Verify thermal constraints fit within the 200 mW power dissipation limit for the intended application environment.
Part Context
This component belongs to the DDTA(R1≠R2 SERIES) CA family of 50V PNP pre-biased transistors. It serves as the PNP counterpart to the DDTC NPN series. The 'CA' designation indicates the specific resistor ratio configuration within the broader product line.
Replacement Considerations
Direct substitutes include other DDTA143ZCA variants from different manufacturers or alternative packages like SC-59 if pin compatibility allows. Verify equivalent electrical parameters such as VCEO, Ic, and hFE before substitution.
FAQ
What are the nominal values of the built-in resistors?
The internal resistors are nominally R1 = 4.7 kΩ and R2 = 47 kΩ.
Is the device compliant with RoHS standards?
Yes, the device is totally lead-free and fully RoHS compliant, containing less than 900ppm bromine and chlorine combined.
What is the maximum junction-to-ambient thermal resistance?
The thermal resistance (RθJA) is 625 °C/W when mounted on an FR4 PC board with the minimum recommended pad layout.
