DMMT3904W-7

Overview

The DMMT3904W-7 is a matched pair NPN small signal transistor manufactured by Diodes Incorporated. It operates within a collector-emitter voltage of 40V and supports a maximum continuous collector current of 200mA. The device features a transition frequency (fT) of 300MHz and total power dissipation of 200mW in an SOT363 package. Electrical characteristics include a collector-base breakdown voltage of 60V, emitter-base breakdown voltage of 6.0V, and a DC current gain ranging from 30 to 300 depending on the operating current. The component exhibits high matching precision with 2% matching on current gain and 2mV matching on base-emitter voltage.

Feature Summary

• Intrinsically matched NPN transistor pair built using adjacent die from the same wafer for high consistency
• Fully internally isolated configuration housed in a compact surface mount package
• Compliant with RoHS standards and free from halogen and antimony

Applications

• Current mirrors
• Differential and instrumentation amplifiers
• Comparators

Procurement Notes

Verify the specific ordering suffix against official documentation before procurement. The standard datasheet covers the DMMT3904W series; confirm if the '-7' or '-7-F' suffix indicates a specific reel size or tape width variation. Ensure that the selected variant meets the required packing quantity and carrier specifications for the intended manufacturing process.

Selection Notes

Select this component when precise matching between two NPN transistors is required for analog circuit designs. The intrinsic matching ensures consistent performance in differential pairs without requiring manual binning. Verify that the 200mA collector current and 200mW power dissipation ratings align with the thermal constraints of the target PCB layout and operating environment.

Part Context

This part belongs to the DMMT3904W family of matched dual NPN transistors. It serves as a specialized alternative to single discrete transistors where symmetry is critical. The SOT363 package allows for space-constrained designs while maintaining electrical isolation between the two internal devices.

Replacement Considerations

Diodes Incorporated offers an automotive-compliant version under the separate datasheet DIODES™ (DMMT3904WQ). Other manufacturers produce electrically similar matched pairs in SOT363 packages, but verification of matching tolerances and pinout compatibility is required.