CMXT3906 TR PBFREE

Overview

The CMXT3906 TR PBFREE is a dual PNP silicon transistor manufactured by Central Semiconductor Corp using an epitaxial planar process. It is housed in a surface mount SOT-26 package with a marking code of X2A. The device supports a collector-base voltage (VCBO) and collector-emitter voltage (VCEO) of 40 V, with an emitter-base voltage (VEBO) of 5.0 V. Continuous collector current (IC) is rated at 200 mA, and power dissipation (PD) reaches 350 mW at 25°C ambient temperature. The thermal resistance (ΘJA) is 357 °C/W. Operating and storage junction temperatures range from -65 to +150 °C. DC current gain (hFE) varies between 30 and 300 depending on collector current, while the transition frequency (fT) is 250 MHz.

Feature Summary

• Dual PNP configuration within a single SOT-26 surface mount package
• Designed for small signal general purpose amplifier and switching applications
• Epitaxial planar silicon construction with epoxy molding

Applications

• Small signal amplification circuits
• General purpose switching applications

Procurement Notes

Verify the part number suffix against official manufacturer documentation to confirm plating specifications. The PBFREE designation indicates lead-free plating compliance as per standard ordering practices. Confirm RoHS status and environmental declarations through the supplier's certified documentation before finalizing procurement orders.

Selection Notes

Select this component when a dual PNP transistor array is required in a compact SOT-26 footprint. Ensure the design accommodates the 350 mW power dissipation limit and the specific pinout configuration where pins 1, 4 are emitters, pins 2, 5 are bases, and pins 3, 6 are collectors. Verify that the 40 V voltage ratings meet circuit requirements.

Part Context

This component belongs to the Central Semiconductor dual PNP transistor series. It shares electrical characteristics with other 40V/200mA PNP devices but is distinct due to its dual-element SOT-26 packaging. The X2A marking code identifies it specifically within the manufacturer's product line.

Replacement Considerations

Public confirmed substitute part numbers include CMXT3906CT and CMXT3906DKR.