PDTC123YS,126

Overview

The PDTC123YS,126 is an NPN Resistor-Equipped Transistor (RET) from the PDTC123Y series, manufactured by Nexperia. It integrates a single NPN transistor with built-in bias resistors: R1 (input/base) is 2.2 kΩ and R2 (base/emitter) is 10 kΩ. The device operates with a maximum collector-emitter voltage of 50 V and a DC output current of 100 mA. It is housed in the SOT54 package, which corresponds to the SC-43A/TO-92 plastic single-ended leaded through-hole configuration. This component simplifies circuit design by reducing component count and pick-and-place costs.

Feature Summary

• Integrates NPN transistor with built-in bias resistors to reduce component count
• Simplifies circuit design for general-purpose switching and amplification
• Reduces pick and place costs in manufacturing processes

Applications

• General-purpose switching and amplification
• Circuit drivers
• Inverter and interface circuits

Procurement Notes

Verify the ordering suffix '126' against official Nexperia documentation to confirm specific packing methods, as standard variants may differ in bulk or tape-and-reel configurations. Ensure the SOT54 package type matches the required through-hole mounting specifications for the target PCB layout.

Selection Notes

Select this component when a compact NPN solution with integrated base biasing is required for through-hole applications. The 2.2 kΩ input resistor and 10 kΩ emitter resistor provide a fixed bias ratio suitable for standard logic interfacing. Verify thermal resistance requirements relative to the SOT54 package's heat dissipation capabilities.

Part Context

This part belongs to the PDTC123Y series of NPN resistor-equipped transistors. The 'YS' designation specifically identifies the SOT54 (SC-43A/TO-92) through-hole package variant. Other series members include surface-mount packages such as SOT23, SOT323, and SOT883, offering flexibility for different assembly technologies.

Replacement Considerations

Direct functional substitutes within the same series include PDTA123YS (PNP complement). For package-specific replacements, verify availability of other PDTC123Y series parts if through-hole mounting is not strictly required.