DMMT3906Q-7-F

Overview

The DMMT3906Q-7-F is a matched PNP small signal surface mount transistor manufactured by Diodes Incorporated. It features an epitaxial planar die construction housed in a compact SOT-26 package. The device provides a collector-base voltage of -40 V, a collector-emitter voltage of -40 V, and a continuous collector current rating of -200 mA. Power dissipation is rated at 225 mW with a thermal resistance of 556 °C/W. The DC current gain (hFE) ranges from 60 to 300 depending on the collector current level. The transition frequency (fT) is specified at 250 MHz.

Feature Summary

• Intrinsically matched PNP pair built with adjacent dies from a single wafer for consistent performance
• Offers tight hFE matched tolerance with typical matching of 1% and maximum of 2%
• Utilizes lead-free plating with matte tin finish annealed over copper leadframe
• Compliant with RoHS standards and utilizes green molding compound

Applications

• General purpose amplification circuits requiring matched transistor pairs
• Small signal switching applications in portable electronics
• Low power analog signal processing tasks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. Confirm that the component meets required environmental standards such as RoHS compliance and green molding specifications. Ensure the SOT-26 footprint matches the target PCB layout design before finalizing procurement decisions.

Selection Notes

Select this component when matched transistor characteristics are critical for circuit balance. The SOT-26 package is suitable for space-constrained designs. Verify that the -40 V voltage ratings and -200 mA current limits align with the operational requirements of the intended application environment.

Part Context

This part belongs to the DMMT3906 series of matched PNP transistors. It shares core electrical characteristics with other variants in the family but differs in packaging and shipping configurations. The Q suffix typically denotes specific manufacturing or testing criteria within the product line.

Replacement Considerations

Check datasheets for alternative matched PNP transistors in SOT-26 packages. Verify pinout compatibility and ensure equivalent hFE matching tolerances are available. Confirm that thermal resistance and power dissipation ratings meet or exceed the original requirements.