PDTC143ET,235

Overview

The PDTC143ET,235 is an NPN Resistor-Equipped Transistor (RET) manufactured by Nexperia USA Inc. It integrates a single NPN transistor with built-in bias resistors R1 and R2, both nominally 4.7 kΩ, into a SOT23 surface-mounted plastic package. The device supports a collector-emitter voltage (VCEO) of 50 V and a continuous output current (IO) of 100 mA. Key electrical characteristics include a DC current gain (hFE) minimum of 30 at 10 mA, a transition frequency (fT) typical value of 230 MHz, and a total power dissipation of 250 mW at 25 °C ambient temperature. The operating junction temperature range extends from -65 °C to +150 °C.

Feature Summary

• Integrates NPN transistor with fixed bias resistors to simplify circuit design
• Reduces component count and pick-and-place costs in assembly processes
• Provides high-speed switching capability with a typical transition frequency of 230 MHz

Applications

• Digital applications in industrial segments
• Cost-saving alternative for BC847 series in digital logic circuits
• Controlling IC inputs
• Switching loads

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, as standard data sheets may omit packing details. Confirm that the product status aligns with current production requirements, noting that this specific part number is designated as non-automotive qualified unless explicitly stated otherwise in updated documentation. Ensure compatibility with RoHS directives if applicable to the target market regulations.

Selection Notes

Select the PDTC143ET when a compact NPN switching solution with integrated base biasing is required. The SOT23 package offers space efficiency for dense PCB layouts. Consider the 50 V voltage rating and 100 mA current limit for appropriate load handling. Verify thermal management needs against the 250 mW power dissipation limit, particularly in high-ambient temperature environments where derating curves must be consulted.

Part Context

This component belongs to the Nexperia PDTC143E series of resistor-equipped transistors. It serves as the NPN variant within this family, with the PDTA143ET provided as the complementary PNP version. The series is designed to replace discrete resistor-transistor networks, offering a standardized footprint and simplified bill of materials for general-purpose digital switching applications across consumer and industrial electronics.

Replacement Considerations

The PDTA143ET is the documented PNP complement within the same series. For direct NPN replacements, verify pinout compatibility and electrical parameters against other SOT23 RETs. Note that automotive-grade equivalents require specific -Q suffix designations, which are distinct from this standard non-automotive qualified part.