FDS9945
- Mfr.Part #
- FDS9945
- Manufacturer
- Fairchild Semiconductor
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- SMALL SIGNAL FIELD-EFFECT TRANSI
- Stock
- 17,787
- In Stock :
- 17,787
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- Manufacturer :
- Fairchild Semiconductor
- Product Category :
- Transistors - FETs, MOSFETs - Arrays
- FET Type :
- 2 N-Channel (Dual)
- RoHS Status :
- ROHS3 Compliant
- Fall Time (Typ) :
- 3 ns
- Pbfree Code :
- yes
- Max Power Dissipation :
- 2W
- Rise Time :
- 4.3ns
- Mount :
- Surface Mount
- Gate to Source Voltage (Vgs) :
- 20V
- Length :
- 5mm
- Weight :
- 187mg
- Number of Terminations :
- 8
- ECCN Code :
- EAR99
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Mounting Type :
- Surface Mount
- Drain to Source Breakdown Voltage :
- 60V
- Lifecycle Status :
- ACTIVE (Last Updated: 5 hours ago)
- Input Capacitance (Ciss) (Max) @ Vds :
- 420pF @ 30V
- Published :
- 2001
- Packaging :
- Tape and Reel (TR)
- Nominal Vgs :
- 2.5 V
- Series :
- PowerTrench®
- Power - Max :
- 1W
- Threshold Voltage :
- 2.5V
- Height :
- 1.5mm
- REACH SVHC :
- No SVHC
- Vgs(th) (Max) @ Id :
- 3V @ 250µA
- FET Feature :
- Logic Level Gate
- Power Dissipation :
- 2W
- Gate Charge (Qg) (Max) @ Vgs :
- 13nC @ 5V
- Resistance :
- 100MOhm
- Turn-Off Delay Time :
- 19 ns
- Rds On (Max) @ Id, Vgs :
- 100m Ω @ 3.5A, 10V
- Contact Plating :
- Tin
- Width :
- 4mm
- Number of Elements :
- 2
- Transistor Element Material :
- SILICON
- Voltage - Rated DC :
- 60V
- Radiation Hardening :
- No
- Continuous Drain Current (ID) :
- 3.5A
- Terminal Form :
- Gull wing
- Operating Mode :
- ENHANCEMENT MODE
- Number of Pins :
- 8
- Element Configuration :
- Dual
- Turn On Delay Time :
- 7 ns
- JESD-609 Code :
- e3
- Operating Temperature :
- -55°C~175°C TJ
- Current Rating :
- 3.5A
- Factory Lead Time :
- 21 Weeks
- Transistor Application :
- SWITCHING
- Lead Free :
- Lead Free
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- FET Technology :
- METAL-OXIDE SEMICONDUCTOR
- Datasheets
- FDS9945

FDS9945 datasheet pdf and Transistors - FETs, MOSFETs - Arrays product details from ON Semiconductor stock available at
FDS9945 Description
This N-channel logic level MOSFET is designed to improve the overall efficiency of the DC/DC converter, using either a synchronous switch PWM controller or a conventional switch PWM controller. Compared with other MOSFET with equivalent RDS (ON) specification, the MOSFET switch speed is faster and the gate charge is lower. As a result, the MOSFET driver is simpler and safer (even at very high frequencies), and the DC/DC power supply is designed with higher overall efficiency.
FDS9945 Features
3.5 A, 60 V
RDS (ON) = 0.100 |? @ VGS = 10V
RDS (ON) = 0.200 |? @ VGS = 4.5V
Optimize the DC/DC converter for switching using pulse width modulation (PWM) controllers
Very fast switch
Low gate charge
FDS9945 Applications
This product is general usage and suitable for many different applications.
DC/DC Converters
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