SI9940DY The Vishay Dale SI9940DY is a Dual N-Channel Enhancement-Mode MOSFET. It features a 50V drain-source voltage and low on-state resistance.
Mfr Part #:

SI9940DY

Available from 1 distributors
Mfr Name: Vishay
Vishay
The Vishay Dale SI9940DY is a Dual N-Channel Enhancement-Mode MOSFET. It features a 50V drain-source voltage and low on-state resistance.
✓ Total Stock: 45,200 pcs
$ Price Range: $1.64

SI9940DY Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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45,200 pcs
45200 pcs On Request 1 On Request On Request On Request On Request On Request

SI9940DY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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SI9940DY Description

Short technical summary and product information.

The Vishay Dale SI9940DY is a Dual N-Channel Enhancement-Mode MOSFET designed for various electronic applications. It offers a maximum drain-source voltage of 50V and a low on-state resistance, with values as low as 0.05Ω at a gate-source voltage of 10V and a drain current of 5.3A.

 

This MOSFET is housed in a standard SO-16 package, suitable for surface mounting. Key electrical characteristics include a gate threshold voltage of 1V, continuous drain current ratings of -5.3A at 25°C and -4.2A at 70°C, and a maximum power dissipation of 2.5W at 25°C.

 

The device also provides specific dynamic characteristics such as total gate charge, gate-source charge, and gate-drain charge, along with switching parameters like turn-on delay, rise time, turn-off delay, and fall time, making it suitable for switching applications. The operating temperature range is from -55°C to 150°C.

SI9940DY Quick Information

Product Type: MOSFET
Canonical Name: Dual N-Channel Enhancement-Mode MOSFET
Subcategory: Dual N-Channel Enhancement-Mode

SI9940DY Compliance

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

SI9940DY Estimated Pricing

Qty Low High
1+ $1.64 $1.64

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

SI9940DY Features

  • Dual N-Channel Enhancement-Mode MOSFET.
  • 50V maximum drain-source voltage.
  • Low on-state resistance down to 0.05Ω.
  • SO-16 surface mount package.
  • Wide operating temperature range.

SI9940DY Applications

  • Suitable for power switching circuits.
  • Used in general electronic designs.
  • Ideal for low-voltage applications.
  • Component in power management systems.

SI9940DY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the drain-source voltage rating?

50 V.

What is the continuous drain current at 25°C?

-5.3 A.

What is the maximum on-resistance at VGS=10V?

0.05 Ω.

What package is this device available in?

SO-16 surface mount.

What is the operating temperature range?

-55 to 150 °C.

What is the gate threshold voltage?

1 V minimum at VDS=VGS, ID=250 µA.

What are the typical switching times?

Turn-on delay 17 ns, rise time 30 ns, turn-off delay 95 ns, fall time 55 ns.

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