PDTC144EU,135

Overview

The PDTC144EU is an NPN Resistor-Equipped Transistor (RET) manufactured by Nexperia, housed in a compact SOT323 (SC-70) surface-mounted plastic package. It integrates bias resistors R1 and R2 with typical values of 47 kΩ each, providing a resistor ratio of 1. The device supports a maximum 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 80 at 5 mA, a transition frequency (fT) of 230 MHz, and a total power dissipation (Ptot) of 200 mW at 25 °C ambient temperature.

Feature Summary

• Integrates built-in bias resistors to simplify circuit design and reduce component count.
• Provides high-speed switching capability with a transition frequency of 230 MHz.
• Offers a cost-saving alternative for standard discrete transistors in digital applications.

Applications

• Digital applications in industrial segments
• Controlling IC inputs
• Switching loads

Procurement Notes

Verify the specific ordering suffix '135' against official Nexperia documentation to confirm reel quantity and tape specifications. Ensure compliance with RoHS directives as indicated in the product data sheet. Confirm that the SC-70 package dimensions align with the target PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when space constraints require a small SOT323 package combined with integrated biasing. It serves as a direct replacement for BC847 series devices in digital logic circuits where external base resistors are typically required. Verify that the 50 V voltage rating and 100 mA current capacity meet the specific load requirements of the application.

Part Context

The PDTC144EU belongs to the NPN resistor-equipped transistor family from Nexperia. Its PNP complement is the PDTA144EU. This component is part of a broader range of RETs designed to minimize board space and assembly costs by combining a transistor with its necessary biasing network into a single surface-mount package.

Replacement Considerations

The PDTA144EU is the complementary PNP version. For automotive applications, verify if an AEC-Q101 qualified variant such as the PDTC144ET-QR is required, as the standard PDTC144EU is explicitly noted as non-automotive qualified in the revision history.

FAQ

Is the PDTC144EU suitable for automotive applications?

No, the standard PDTC144EU is not automotive qualified. The datasheet revision history explicitly states that the product is non-automotive. Automotive-grade versions, such as those with the -QR suffix, should be selected for automotive equipment.

What are the typical values for the internal bias resistors?

The typical value for both bias resistor R1 (input) and R2 is 47 kΩ. The typical resistor ratio (R2/R1) is 1.

What is the maximum power dissipation of the device?

The total power dissipation (Ptot) is 200 mW when the ambient temperature is 25 °C or lower. Derating curves are provided in the datasheet for operation at higher temperatures.