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The SI4559ADY-T1-E3 is a Vishay Siliconix N- and P-channel MOSFET pair in an SO-8 package. It utilizes TrenchFET technology with a 60 V drain-source voltage rating. The N-channel offers a maximum RDS(on) of 0.058 Ω at ±10 V and 0.072 Ω at ±4.5 V, with a continuous current of 5.3 A. The P-channel provides a maximum RDS(on) of 0.120 Ω at ±10 V and 0.150 Ω at ±4.5 V, supporting 3.9 A. Total gate charge reaches 20 nC for the N-channel and 22 nC for the P-channel. Operating temperature ranges from -55 °C to +150 °C.
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status by reviewing the specific material categorization documentation provided by Vishay. Ensure ordering suffixes match exact lead-free specifications required for assembly processes.
Evaluate thermal management requirements against junction-to-ambient resistance limits. Verify that gate drive voltages align with specified RDS(on) thresholds at 4.5 V or 10 V. Assess avalanche energy ratings if inductive load protection is necessary for the target application design.
This component belongs to the SI4 series of dual MOSFETs manufactured by Vishay Siliconix. It represents a specialized solution combining complementary channel types in a compact surface-mount footprint, designed to simplify circuit board layout for applications requiring paired switching elements.