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Si4778DY The Vishay Siliconix Si4778DY is an N-Channel MOSFET designed for applications like DC/DC converters and notebook system power. It offers a 25V drain-source voltage and low on-state resistance.
Mfr Part #:

Si4778DY

Available from 1 distributors
Mfr Name: Vishay
Vishay
The Vishay Siliconix Si4778DY is an N-Channel MOSFET designed for applications like DC/DC converters and notebook system power. It offers a 25V drain-source voltage and low on-state resistance.
✓ Total Stock: 602,667 pcs
$ Price Range: $2.81

Si4778DY Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
602,667 pcs
On Request
602667 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

Si4778DY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Halogen Free
Input Capacitance
Mounting Type
SVHC Present
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Si4778DY Description

Short technical summary and product information.

The Vishay Siliconix Si4778DY is an N-Channel Power MOSFET featuring TrenchFET technology. It is rated for a maximum drain-source voltage (VDS) of 25V and offers a low on-state resistance (RDS(on)) of 0.023 Ohms at VGS = 4.5V and ID = 6.3A. The continuous drain current (ID) is rated up to 8A.

 

This MOSFET is suitable for applications such as DC/DC converters, gaming, and notebook system power. It is available in a compact SO-8 package, designed for surface mounting.

 

Key electrical characteristics include a gate-source threshold voltage (VGS(th)) typically around 2.2V and a gate-source voltage (VGS) range of ±16V. The device also features dynamic characteristics like input capacitance (Ciss) of 680pF and output capacitance (Coss) of 120pF.

 

The Si4778DY is tested 100% for Rg and UIS, and is available in lead (Pb)-free and halogen-free options.

Si4778DY Quick Information

Product Type: MOSFET
Canonical Name: Si4778DY N-Channel 25-V (D-S) MOSFET

Si4778DY Compliance

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

Si4778DY Estimated Pricing

Qty Low High
1+ $2.81 $2.81

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

Si4778DY Features

  • N-Channel 25V (D-S) MOSFET
  • Low on-state resistance
  • TrenchFET Power MOSFET technology
  • SO-8 package for surface mounting
  • Tested 100% for Rg and UIS

Si4778DY Applications

  • Suitable for low-voltage power switching.
  • Used in DC/DC converter circuits.
  • Ideal for load switch applications.
  • Applicable in battery management systems.

Si4778DY FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum drain-source voltage for the Si4778DY?

The maximum drain-source voltage (VDS) for the Si4778DY is 25V.

What is the typical on-state resistance of the Si4778DY at VGS = 4.5V?

The typical on-state resistance (RDS(on)) of the Si4778DY at VGS = 4.5V and ID = 6.3A is 0.023 Ohms.

What is the continuous drain current rating for the Si4778DY?

The continuous drain current (ID) for the Si4778DY is rated up to 8A at TC = 25°C and TC = 70°C.

What package type is the Si4778DY MOSFET supplied in?

The Si4778DY MOSFET is supplied in an SO-8 package.

What are the typical applications for the Si4778DY?

Typical applications for the Si4778DY include DC/DC converters, gaming, and notebook system power.

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