The Vishay Si4446DY is a N-channel MOSFET transistor that belongs to the Si4446DY family of discrete semiconductor products.

• Drain-Source Breakdown Voltage: 40V
• Continuous Drain Current: 3.9A @ 25°C
• Gate-Source Threshold Voltage: 1.6V @ 250μA
• Maximum Gate Charge: 12nC @ 4.5V
• Maximum Rds On @ Id, Vgs: 40 mOhm @ 5.2A, 10V
• Package: 8-SO
• Maximum Input Capacitance: 700pF @ 20V
• Maximum Gate-Source Voltage: ±12V
• Status: obsolete (EOL)
• Estimated EOL date: N/A
• Alternative parts: TPC8089-H, AO4450L, DMN4034SSS, and TPC8089-H