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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 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 DDTC125TUA-7 is an NPN pre-biased small signal surface mount transistor from the DDTC (R1-only) series by Diodes Incorporated. It features epitaxial planar die construction and a built-in biasing resistor with a nominal value of 200 kΩ. The device operates within a collector-emitter voltage range of up to 50 V and supports a continuous collector current of 100 mA. Electrical characteristics include a DC current transfer ratio (hFE) ranging from 100 to 600 at IC = 1mA, VCE = 5V, and a gain-bandwidth product of 250 MHz. Thermal performance allows for power dissipation up to 200 mW with a junction-to-ambient thermal resistance of 625 °C/W. Operating temperatures span from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction designed for high reliability in surface mount applications.
- Integrated single biasing resistor (R1 only) simplifies circuit design and reduces component count.
- Totally lead-free and fully RoHS compliant, ensuring compliance with environmental directives.
Applications
- General-purpose switching applications requiring simplified bias networks.
- Driver circuits for low-power loads where space-saving SMD packaging is required.
- Automotive electronics systems compatible with IATF 16949 certified manufacturing processes.
Procurement Notes
Verify part status before procurement as the DDTC125TUA-7-F variant is listed as obsolete in official documentation. Confirm availability through authorized distributors or check for active alternatives within the same series. Ensure ordering suffixes match specific packing requirements such as reel size and tape width. Validate RoHS compliance certificates if required for regulatory adherence in target markets.
Selection Notes
Select this component when a single NPN pre-biased transistor with a 200 kΩ base resistor is needed. Compare hFE ranges and saturation voltages against load requirements. Consider the SOT323 package dimensions for PCB layout constraints. Verify thermal management capabilities based on expected power dissipation levels in the final application environment.
Part Context
This component belongs to the DDTC R1-only series, which includes various NPN pre-biased transistors differentiated primarily by their internal base resistor values. The 'UA' suffix indicates the SOT323 surface mount package. Other variants in the series offer different resistance values such as 1kΩ, 10kΩ, and 100kΩ to suit diverse biasing needs without changing the core transistor specifications.
Replacement Considerations
Check for active equivalents like DDTC125TCA-7-F if the UA package is unavailable. Ensure substitute parts maintain identical pinout configurations and electrical parameters including VCEO, IC, and R1 tolerance. Verify that any replacement meets the same RoHS and halogen-free requirements specified for the original device.
