Datasheets
SI4840DY by:
Vishay Intertechnologies
Honest Han
Vishay BLH
Vishay Intertechnologies
Vishay Siliconix
Not Found

Small Signal Field-Effect Transistor, 10A I(D), 40V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, SO-8

Part Details for SI4840DY by Vishay Intertechnologies

Results Overview of SI4840DY by Vishay Intertechnologies

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Applications Consumer Electronics Audio and Video Systems

SI4840DY Information

SI4840DY by Vishay Intertechnologies is a Small Signal Field-Effect Transistor.
Small Signal Field-Effect Transistors are under the broader part category of Transistors.

A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.

Price & Stock for SI4840DY

Part # Distributor Description Stock Price Buy
Quest Components TRANSISTOR,MOSFET,N-CHANNEL,40V V(BR)DSS,10A I(D),SO 1360
  • 1 $2.8000
  • 660 $0.8750
  • 1,144 $0.7700
$0.7700 / $2.8000 Buy Now
Quest Components TRANSISTOR,MOSFET,N-CHANNEL,40V V(BR)DSS,10A I(D),SO 198
  • 1 $2.0400
  • 60 $1.1220
  • 135 $1.0200
$1.0200 / $2.0400 Buy Now
Quest Components TRANSISTOR,MOSFET,N-CHANNEL,40V V(BR)DSS,10A I(D),SO 22
  • 1 $5.8206
  • 6 $4.2684
  • 19 $3.8804
$3.8804 / $5.8206 Buy Now

Part Details for SI4840DY

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SI4840DY Part Data Attributes

SI4840DY Vishay Intertechnologies
Buy Now Datasheet
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SI4840DY Vishay Intertechnologies Small Signal Field-Effect Transistor, 10A I(D), 40V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, SO-8
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Rohs Code No
Part Life Cycle Code Obsolete
Ihs Manufacturer VISHAY INTERTECHNOLOGY INC
Package Description SO-8
Reach Compliance Code compliant
ECCN Code EAR99
Samacsys Manufacturer Vishay
Configuration SINGLE WITH BUILT-IN DIODE
DS Breakdown Voltage-Min 40 V
Drain Current-Max (ID) 10 A
Drain-source On Resistance-Max 0.009 Ω
FET Technology METAL-OXIDE SEMICONDUCTOR
JESD-30 Code R-PDSO-G8
JESD-609 Code e0
Number of Elements 1
Number of Terminals 8
Operating Mode ENHANCEMENT MODE
Operating Temperature-Max 150 °C
Package Body Material PLASTIC/EPOXY
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Polarity/Channel Type N-CHANNEL
Power Dissipation-Max (Abs) 1.56 W
Qualification Status Not Qualified
Surface Mount YES
Terminal Finish TIN LEAD
Terminal Form GULL WING
Terminal Position DUAL
Transistor Element Material SILICON

SI4840DY Related Parts

SI4840DY Frequently Asked Questions (FAQ)

  • A good PCB layout for the SI4840DY should ensure that the high-frequency signals are kept away from the low-frequency signals, and that the power supply lines are decoupled from the signal lines. A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Additionally, the layout should minimize the length of the traces and avoid sharp corners and right-angle bends.

  • To ensure the reliability of the SI4840DY in high-temperature applications, it is recommended to follow the derating guidelines provided in the datasheet. Additionally, the device should be mounted on a heat sink to dissipate heat effectively. The PCB should also be designed to minimize thermal resistance and ensure good thermal conductivity.

  • The maximum allowable voltage on the input pins of the SI4840DY is 5.5V. Exceeding this voltage can cause damage to the device. It is recommended to use voltage limiting resistors or clamping diodes to protect the input pins from overvoltage conditions.

  • To troubleshoot issues with the SI4840DY, it is recommended to use a combination of measurement tools such as oscilloscopes, spectrum analyzers, and logic analyzers. The device should be operated in a controlled environment with minimal noise and interference. The PCB layout and component selection should also be reviewed to ensure that they meet the recommended specifications.

  • Yes, the SI4840DY can be used in applications that require high-frequency switching. However, the device should be operated within its recommended frequency range and the PCB layout should be designed to minimize parasitic inductance and capacitance. Additionally, the device should be properly decoupled and bypassed to ensure stable operation.