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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Resistors Included：R1 and R2
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：220 Ohms
- Resistor - Emitter Base (R2)：10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：56 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max)：500nA
- Frequency - Transition：200 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The DDTD122LC-7-F is a single NPN pre-biased surface-mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction and integrates built-in biasing resistors within a compact SOT-23 package. The device supports a collector-emitter voltage of 40 V, a continuous collector current of 500 mA, and a power dissipation of 250 mW at 25°C ambient temperature. Typical internal resistor values include an input resistance of 220 Ohms and a resistor ratio of 0.022. The component operates across a temperature range from -55°C to +150°C and complies with RoHS standards.
Feature Summary
- Integrates built-in biasing resistors for simplified circuit design
- Utilizes epitaxial planar die construction for reliable performance
- Complies with RoHS directives and is halogen and antimony free
Applications
- General-purpose switching applications
- Driver circuits for low-power loads
- Logic interface buffering
Procurement Notes
Verify the obsolete status of this part number before initiating procurement processes. Confirm availability through authorized channels or secondary markets if production sourcing is required. Ensure that any replacement components meet the same electrical specifications and mechanical footprint requirements to maintain design integrity.
Selection Notes
Select this component when a single NPN digital transistor with integrated biasing is required in an SOT-23 package. Verify that the 40 V collector-emitter voltage and 500 mA current ratings align with the application's maximum operating conditions. Consider the thermal resistance characteristics and derating curves for high-temperature environments.
Part Context
This component belongs to the DDTD series of NPN pre-biased transistors produced by Diodes Incorporated. It shares the same package type and general functionality as other members of the family, such as the DDTD142JC-7-F, but differs in specific internal resistor values and marking codes. The series is designed for space-constrained surface-mount applications requiring integrated biasing solutions.
Replacement Considerations
The datasheet lists the DDTD122TC-7-F as a related part within the same series. Verify compatibility regarding resistor ratios and marking codes when considering substitutes.
