CMXT2222A TR PBFREE

Overview

The CMXT2222A TR PBFREE is a dual NPN silicon transistor manufactured by Central Semiconductor Corp using an epitaxial planar process. It is housed in a SUPERmini™ surface mount package (SOT-26). Key electrical ratings include a collector-base voltage of 75 V, collector-emitter voltage of 40 V, and continuous collector current of 600 mA per transistor. Power dissipation is rated at 350 mW with a thermal resistance of 357 °C/W. The device operates within a junction temperature range of -65°C to +150°C. Electrical characteristics specify a minimum DC current gain (hFE) of 100 at 150 mA and a transition frequency (fT) of 300 MHz.

Feature Summary

• Dual configuration integrating two independent NPN transistors into a single compact SOT-26 package for space-constrained designs.
• Designed for small signal general purpose and switching applications utilizing an epitaxial planar process.
• Surface mount construction facilitates automated assembly and high-density PCB layouts.

Applications

• Small signal amplification circuits
• General purpose switching applications
• Digital logic interface stages

Procurement Notes

Verify the specific ordering suffix when sourcing components. The manufacturer specifies that adding the suffix 'PBFREE' indicates lead-free plating, while 'TIN/LEAD' denotes tin/lead plating options. Confirm the exact part number matches the required termination finish to ensure compliance with project specifications and environmental regulations before finalizing procurement orders.

Selection Notes

Select this component when a dual NPN configuration is required in a surface mount format. The SOT-26 package provides two transistors in a six-lead outline, reducing board area compared to discrete single transistors. Ensure the design accounts for the 350 mW power dissipation limit and the 357 °C/W thermal resistance to maintain junction temperatures within the specified -65°C to +150°C operating range during operation.

Part Context

This part belongs to the Central Semiconductor CMXT2222A series of surface mount dual NPN silicon transistors. The 'TR' designation typically indicates tape and reel packaging for automated manufacturing, while 'PBFREE' confirms the lead-free plating specification as defined by the manufacturer's ordering guidelines.

Replacement Considerations

Direct substitutes must match the dual NPN configuration, SOT-26 package, and similar electrical ratings (40V VCEO, 600mA IC). Verify pinout compatibility, specifically the emitter/base/collector arrangement for both elements, as pin assignments can vary between manufacturers even within the same package type.

FAQ

What is the marking code on the CMXT2222A package?

The marking code on the device is X1P.

How are the pins arranged in the SOT-26 package?

Pin 1 is Emitter Q1, Pin 2 is Base Q1, Pin 3 is Collector Q2, Pin 4 is Emitter Q2, Pin 5 is Base Q2, and Pin 6 is Collector Q1.

What is the maximum collector-base voltage rating?

The maximum collector-base voltage (VCBO) is 75 V.