DTC144TSA-AP

Overview

The DTC144TSA is an NPN digital transistor manufactured by Micro Commercial Components (MCC). It integrates a single bias resistor, R1, with a typical value of 47 kOhms. The device supports a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) of 100 mA. Power dissipation is rated at 300 mW, with a transition frequency (fT) of 250 MHz. The component utilizes a TO-92S package and operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Built-in thin-film bias resistors enable inverter circuit configuration without external input components.
• Resistors feature complete isolation to allow negative biasing of the input and minimize parasitic effects.
• Epoxy meets UL 94 V-0 flammability rating.

Applications

• Inverter circuits
• Switching applications requiring simplified design
• General-purpose digital logic interfacing

Procurement Notes

Verify the specific ordering suffix against official MCC documentation to confirm packaging type and compliance status. The standard part number indicates bulk or ammo packing options. Confirm RoHS compliance requirements, as the "P" suffix designates RoHS compliant versions. Ensure procurement channels are authorized distributors to guarantee genuine parts and full traceability.

Selection Notes

Select this component for designs requiring an NPN digital transistor with a 47 kOhm base resistor in a through-hole TO-92S package. Verify that the 300 mW power dissipation and 50 V voltage ratings meet the circuit's operational limits. Consider the 250 MHz transition frequency for high-speed switching requirements. Check if halogen-free variants are necessary for specific environmental regulations.

Part Context

The DTC144TSA belongs to the DTC144 series of NPN digital transistors from Micro Commercial Components. This series integrates internal bias resistors to simplify circuit design. The TSA designation specifically refers to the TO-92S leaded package format, distinguishing it from surface-mount equivalents like the SOT-23 or SOT-523 packages found in other series members.

Replacement Considerations

Direct replacements must match the NPN polarity, 47 kOhm internal resistance, TO-92S package, and 50 V/100 mA ratings. Cross-reference with other manufacturers' TO-92S digital transistors having identical pinouts and electrical characteristics. Verify thermal performance and saturation voltage compatibility before substitution.

FAQ

What is the function of the internal resistors in the DTC144TSA?

The internal resistors consist of thin-film resistors with complete isolation, allowing for negative biasing of the input and eliminating parasitic effects to simplify inverter circuit design.

How does the "-HF" suffix affect the DTC144TSA?

Adding the "-HF" suffix designates a halogen-free version of the component, available upon request.

What is the typical input resistance value for this device?

The typical input resistance (R1) is 47 kOhms, with a minimum of 32.9 kOhms and a maximum of 61.1 kOhms.