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Product Detailed Parameters
- Description：TRANS PREBIAS PNP 200MW SOT23-3
- 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 DDTA144ECA-7 is a PNP pre-biased small signal surface mount transistor from Diodes Incorporated, housed in an SOT-23 package. It features built-in biasing resistors with nominal values of R1 = R2 = 47 kΩ and a resistance ratio of 1. The device supports a supply voltage (VCC) 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) has a minimum value of 68 at VO = -5 V and IO = -5 mA. The transition frequency (fT) is typically 250 MHz. Operating and storage temperatures range from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Integrated biasing resistors simplify circuit design
- Qualified to AEC-Q101 standards for high reliability
- Totally lead-free and fully RoHS compliant
Applications
- Switching applications requiring integrated base drive
- Driver circuits for low-power loads
- Logic interface circuits for level shifting
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and compliance status. Confirm that the component meets all required automotive or industrial specifications if applicable. Check for any recent product change notifications regarding material or assembly updates before finalizing procurement plans.
Selection Notes
Select this component when a PNP digital transistor with equal internal biasing resistors is required. Ensure the circuit operates within the -50 V supply voltage limit and -100 mA collector current rating. Consider the 200 mW power dissipation capability and thermal resistance when designing the PCB layout for adequate heat management.
Part Context
This part belongs to the DDTA (R1 = R2 Series) CA family of pre-biased transistors. Complementary NPN types are available in the DDTC series. The 'CA' designation indicates the specific resistor configuration and package type. Other variants in the series offer different resistor values such as 2.2kΩ, 4.7kΩ, 10kΩ, 22kΩ, and 100kΩ.
Replacement Considerations
Direct electrical equivalents may include other PNP pre-biased transistors with 47kΩ/47kΩ internal resistors in an SOT-23 package. Verify pinout compatibility and absolute maximum ratings before substitution. Automotive-grade alternatives should be checked for AEC-Q101 qualification if required by the application.
FAQ
What are the nominal values of the internal biasing resistors?
The internal biasing resistors R1 and R2 both have a nominal value of 47 kΩ.
Is this component qualified for automotive applications?
Yes, the DDTA144ECA-7 is qualified to AEC-Q101 standards for high reliability.
What is the maximum power dissipation of the device?
The maximum power dissipation is 200 mW when mounted on an FR-4 PC board with the minimum recommended pad layout.
