PDTD143XUF

Overview

The PDTD143XUF is an NPN Resistor-Equipped Transistor (RET) from the PDTD1xxxU series, housed in a SOT323 (SC-70) plastic surface-mounted package. It features built-in bias resistors with R1 at 4.7 kΩ and R2 at 10 kΩ, providing a typical resistor ratio of 2.13. The device supports a maximum collector-emitter voltage of 50 V and an output current capability of 500 mA. Key electrical characteristics include a minimum DC current gain of 70 at 50 mA, a transition frequency of 225 MHz, and a collector-emitter saturation voltage of 100 mV under specified conditions.

Feature Summary

• Built-in bias resistors simplify circuit design and reduce component count
• AEC-Q101 qualified for automotive applications
• High temperature operation up to 175 °C
• ±10% resistor ratio tolerance

Applications

• IC inputs control
• Switching loads
• General purpose switching and amplification

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package variant and marking code. Confirm AEC-Q101 qualification status if required for automotive designs. Ensure compatibility with standard SOT323 footprints during PCB layout. Cross-reference the datasheet revision date to ensure access to the latest thermal and electrical specifications before finalizing procurement.

Selection Notes

Select this component when a compact NPN transistor with integrated base biasing is required for space-constrained designs. The PDTD143XUF offers a 4.7 kΩ input resistor and 10 kΩ base-emitter resistor configuration suitable for standard logic interface levels. Consider the 500 mA current rating and 50 V voltage limits to ensure adequate headroom for the intended load switching application.

Part Context

This part belongs to the PDTD1xxxU series of NPN resistor-equipped transistors manufactured by Nexperia. It serves as the NPN complement to the PDTB143XU PNP RET. The series is designed to replace discrete transistor and resistor networks, offering a cost-saving alternative to traditional BC817 or BC807 series components in digital applications requiring simplified biasing.

Replacement Considerations

The direct PNP complement within the same series is PDTB143XU. For general-purpose replacements, verify that substitute parts match the 500 mA current rating, 50 V voltage rating, and SOT323 package dimensions. Ensure any alternative RET maintains similar resistor values to preserve existing circuit biasing without modification.