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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V SOT323
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Tape & Reel (TR)
- Resistors Included：R1 Only
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：220 Ohms
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 250µA, 5mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- Frequency - Transition：200 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SOT-323
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Overview
The DDTC122TU-7 is an obsolete NPN pre-biased surface mount transistor manufactured by Diodes Incorporated. It features a single configuration with built-in biasing resistors (R1=0.22kΩ, R2=10kΩ) in an SOT-323 package. Key electrical parameters include a maximum collector-emitter voltage of 40V, continuous collector current of 100mA, and power dissipation of 200mW at 25°C. The device offers a minimum DC current gain (hFE) of 100 and a transition frequency of 200MHz. Operating temperature ranges from -55°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Integrated biasing resistors simplify circuit design
- Totally lead-free and fully RoHS compliant
- Halogen and antimony free "Green" device
Applications
- General purpose switching applications
- Driver circuits for low-current loads
- Logic level translation interfaces
Procurement Notes
This component is officially marked as obsolete and discontinued by the manufacturer. Verification of availability should focus on surplus distributors or secondary markets rather than direct procurement from Diodes Incorporated. Engineering teams must confirm end-of-life status and potential supply constraints before initiating any design-in process.
Selection Notes
Designers should evaluate alternative active components due to the discontinued status of this part. When selecting replacements, verify that the substitute maintains compatible pinout configurations, voltage ratings, and thermal characteristics within the SOT-323 form factor to ensure mechanical and electrical interchangeability.
Part Context
The DDTC122TU-7 belongs to the DDTC series of NPN pre-biased transistors from Diodes Incorporated. This series integrates internal resistors to reduce board space and simplify biasing networks. The specific TU variant denotes a 0.22kΩ base resistor and 10kΩ emitter resistor configuration within the SOT-323 package.
Replacement Considerations
Direct substitutes include the DDTC122TU-7-F, which shares identical electrical specifications and packaging. Other compatible options within the same family may include variations with different resistor ratios, provided they meet the required voltage and current thresholds.
