SI4840DY The Vishay Dale SI4840DY is an N-Channel MOSFET designed for power applications. It features a 40V drain-source voltage and a maximum continuous drain current of 14A.
Mfr Part #:

SI4840DY

Available from 2 distributors
Mfr Name: Vishay
Vishay
The Vishay Dale SI4840DY is an N-Channel MOSFET designed for power applications. It features a 40V drain-source voltage and a maximum continuous drain current of 14A.
✓ Total Stock: 92,100 pcs
$ Price Range: $2.81

SI4840DY Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
90,400 pcs
90400 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1,700 pcs
1700 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

SI4840DY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
SVHC Present

SI4840DY Description

Short technical summary and product information.

The Vishay Dale SI4840DY is an N-Channel Power MOSFET with a 40V drain-source voltage rating. It offers a low on-state resistance, with a typical value of 0.0075 Ω at VGS = 10V and ID = 14A, and 0.0095 Ω at VGS = 4.5V and ID = 12A. The device is available in a compact SO-8 package suitable for surface mounting.

 

Key electrical characteristics include a continuous drain current of up to 14A at 25°C ambient temperature and a pulsed drain current of 50A. The operating junction and storage temperature range is from -55°C to 150°C. The MOSFET is Pb-free and RoHS3 compliant, making it suitable for various electronic designs requiring reliable power switching.

 

This MOSFET is tested for 100% Rg, ensuring consistent gate drive performance. Its specifications make it suitable for general-purpose switching applications where efficient power handling is required. The datasheet provides detailed information on dynamic characteristics such as gate charge, rise time, and fall time.

SI4840DY Quick Information

Product Type: N-Channel MOSFET
Canonical Name: Vishay Siliconix SI4840DY N-Channel 40-V MOSFET
Subcategory: N-Channel

SI4840DY Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: true

SI4840DY Estimated Pricing

Qty Low High
1+ $2.81 $2.81

Estimated market price range - modelled values for guidance only, not live distributor offers.

SI4840DY Features

  • 40V Drain-Source Voltage rating
  • Low on-state resistance typical 0.0075 Ω
  • Continuous drain current up to 14A
  • SO-8 surface mount package
  • Pb-free and RoHS3 compliant

SI4840DY Applications

  • Suitable for power switching applications
  • General-purpose MOSFET applications
  • Designs requiring low RDS(on)
  • Compact SO-8 package integration

SI4840DY FAQs

6 frequently asked questions generated from this part’s specifications.
What is the drain-source voltage of the SI4840DY?

The drain-source voltage (VDS) is 40V.

What is the maximum continuous drain current for the SI4840DY?

The maximum continuous drain current (ID) is 14A at 25°C ambient temperature.

What is the typical on-state resistance of the SI4840DY?

The typical on-state resistance (rDS(on)) is 0.0075 Ω at VGS = 10V and ID = 14A.

What package type is the SI4840DY available in?

The SI4840DY is available in an SO-8 package.

What is the RoHS status of the SI4840DY?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the SI4840DY?

The Moisture Sensitivity Level (MSL) is 1 Unlimited.

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