DCX143TH-7

Overview

The DCX143TH-7 is a complementary NPN/PNP pre-biased small signal transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in a SOT563 package. The device integrates built-in biasing resistors, with R1 specified at 4.7 kOhms and R2 at 47 kOhms. Maximum ratings include a supply voltage (VCC) of ±50 V, continuous collector current of 100 mA, and total power dissipation of 150 mW. Electrical characteristics specify a minimum DC current transfer ratio (hFE) of 100 and a typical gain-bandwidth product (fT) of 250 MHz. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Complementary NPN and PNP transistors integrated into a single dual configuration
• Built-in biasing resistors eliminate external resistor requirements for switching applications
• Totally lead-free and fully RoHS compliant with halogen and antimony-free green device construction

Applications

• General-purpose switching circuits requiring compact footprint
• Driver stages for logic interfaces
• Low-power analog switching applications

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm compliance with RoHS 2 and RoHS 3 directives as stated in the datasheet. Ensure storage conditions adhere to J-STD-020 Level 1 moisture sensitivity standards prior to soldering. Validate that the specific ordering suffix matches the required packaging format.

Selection Notes

Select this component when a complementary pair is required within a minimal surface-mount footprint. The 4.7 kOhm input resistance suits standard logic drive levels. Verify thermal constraints against the 833 °C/W junction-to-ambient resistance rating. Consider the SOT563 package dimensions for PCB layout compatibility.

Part Context

This part belongs to the DCX series of complementary pre-biased transistors. It shares the SOT563 mechanical housing with variants like DCX143EH and DCX114TH. The 'H' suffix denotes the specific package type. Internal marking codes identify the product type and date code for traceability.

Replacement Considerations

DCX143EH-7: Complementary NPN/PNP pre-biased transistor in SOT563 package with identical electrical characteristics and pinout.

FAQ

What are the values of the internal biasing resistors?

For the DCX143TH variant, the internal resistors are R1 = 4.7 kOhms and R2 = 47 kOhms.

What is the maximum operating temperature range?

The operating and storage temperature range is -55°C to +150°C.

Is the device suitable for high-frequency applications?

Yes, it has a typical gain-bandwidth product (fT) of 250 MHz.