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The MMDT3904TB6_R1_00001 is a dual NPN general-purpose switching transistor manufactured by Panjit International Inc. It utilizes an epitaxial silicon planar design housed in a SOT-563 plastic case with a marking code of TX. The device supports a collector-emitter voltage (VCEO) of 40 V, a collector-base voltage (VCBO) of 60 V, and an emitter-base voltage (VEBO) of 6.0 V. Continuous collector current (IC) is rated at 200 mA, with maximum power dissipation (PTOT) of 225 mW. DC current gain (hFE) ranges from 40 to 300 at IC = 10 mA and VCE = 1.0 V. Operating temperatures span from -55°C to +150°C.
Verify the specific ordering suffix against official Panjit documentation to confirm packaging type and compliance status. Confirm that the component lot number is recorded for traceability purposes as required by the manufacturer's tracking policies. Ensure storage conditions remain within specified thermal limits prior to assembly.
Select this component when a dual NPN configuration is required in a small footprint. Verify that the 40 V collector-emitter rating and 200 mA continuous current capability align with circuit requirements. Consider the 225 mW power dissipation limit and thermal resistance characteristics for proper heat management in the target application environment.
This part belongs to the MMDT3904 series of dual NPN transistors produced by Panjit. It shares core electrical characteristics with other variants in the family but differs in packaging codes and reel configurations. The R1 suffix indicates a Tape and Reel packing type on a 7-inch plastic reel.
Direct replacements include MMDT3904HE3-TP and DMMT3906W-AU_R1_007A1. Verify pinout compatibility and absolute ratings before substitution.