PDTC123YT-QR

Overview

The PDTC123YT-QR is an NPN resistor-equipped transistor (RET) manufactured by Nexperia, housed in a SOT-23 surface-mounted device package. It integrates bias resistors R1 and R2 internally to simplify circuit design. The collector-emitter voltage (VCEO) is rated at 50 V, with a maximum output current of 100 mA. The typical input bias resistor R1 value is 2.2 kΩ, while the typical bias resistor ratio (R2/R1) is 4.5. The device operates within an ambient temperature range of -65 °C to +150 °C and features a total power dissipation of 250 mW at 25 °C.

Feature Summary

• Built-in bias resistors reduce component count and pick-and-place costs
• Qualified according to AEC-Q101 for automotive applications
• Simplifies circuit design through integrated resistance network

Applications

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

Procurement Notes

Verify the specific suffix 'QR' against the manufacturer's official documentation to confirm reel packaging specifications and tape dimensions. Ensure the ordering code matches the exact SOT-23 variant required for the PCB footprint. Cross-reference the marking code '%AL' with production site data if traceability is necessary for the assembly process.

Selection Notes

Select this component when an NPN configuration with a 2.2 kΩ input resistor and a 4.5kΩ equivalent pull-down resistor is required. Verify that the 100 mA output current capability meets the load requirements. Confirm compatibility with the target operating temperature range up to 150 °C and ensure the SOT-23 package dimensions fit the available board space constraints.

Part Context

This part belongs to the Nexperia PDTC series of NPN resistor-equipped transistors. These devices are designed to replace discrete resistor networks in digital logic interfaces. The 'Q' designation indicates automotive qualification under AEC-Q101 standards, distinguishing it from standard commercial grade variants within the same electrical family.

Replacement Considerations

Direct substitutes include other Nexperia NPN RETs with identical pinouts and similar resistor values, such as the PDTC123TT or PDTC123TU. Verify that any replacement maintains the 50 V VCEO rating and 100 mA IO limit. Check if the alternative package type requires footprint modification.