FDD6035AL MOSFET — Specifications & Equivalents
Manufacturer: Commonly produced by Fairchild (now onsemi)
About the FDD6035AL
The FDD6035AL is a MOSFET with a drain–source voltage (VDS) rating of 30 V and a continuous drain current (ID) of 46 A. It can dissipate up to 56 W and is rated to a junction temperature of 175 °C. It is supplied in the TO252 package.
At a glance
- Type: MOSFET
- Max drain–source voltage (VDS): 30 V
- Max continuous drain current (ID): 46 A
- Power dissipation (PD): 56 W
- Max junction temperature (TJ): 175 °C
- Package: TO252
- Manufacturer: Commonly produced by Fairchild (now onsemi)
Typical applications
With its 30 V drain–source rating the FDD6035AL sits in the low-voltage class of switching MOSFETs, typically found in 12 V and 24 V automotive and industrial rails, synchronous buck converters, load switching and reverse-polarity protection and H-bridges for small motors.
Gate drive and switching notes
Keep gate–source voltage within the ±20 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.
Switching behaviour is characterised by an output capacitance (Coss) of 325 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the FDD6035AL
A drop-in substitute for the FDD6035AL should match its polarity and offer a drain–source rating of at least 30 V and a continuous drain current rating of at least 46 A.
Mechanically, check the replacement against the TO252 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.
Where the application switches inductive loads or runs near the voltage limit, keep extra headroom rather than choosing a part that only just meets the original numbers.
Frequently asked questions
What is the FDD6035AL?
The FDD6035AL is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 30 V drain-source and 46 A continuous drain current.
What is the maximum voltage of the FDD6035AL?
The FDD6035AL has a maximum drain-source voltage (Vds) of 30 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the FDD6035AL handle?
It is rated for 46 A of continuous drain current, with power dissipation limited to 56 W. Real-world capability depends on your heatsinking and ambient temperature.
What package does the FDD6035AL come in?
It is listed in TO252. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the FDD6035AL?
This page lists 17 candidate equivalents matched on electrical ratings and package. Any replacement should meet or exceed the original voltage, current and dissipation figures and use a compatible drive level.
Key Specifications
| Pd ⓘ - Maximum Power Dissipation | 56 W |
|---|---|
| |Vds|ⓘ - Maximum Drain-Source Voltage | 30 V |
| |Vgs|ⓘ - Maximum Gate-Source Voltage | 20 V |
| |Id| ⓘ - Maximum Drain Current | 46 A |
| Tj ⓘ - Maximum Junction Temperature | 175 °C |
| Cossⓘ - Output Capacitance | 325 pF |
| Package | TO252 |
| isc N-Channel MOSFET Transistor FDD6035ALFEATURESDrain Current I = 46A@ T =25D CDrain Source Voltage- | V =30V(Min)DSSStatic Drain-Source On-Resistance: R = 12m(Max)DS(on)100% avalanche testedMinimum Lot-to-Lot variations for robust deviceperformance and reliable operationDESCRIPTIONDesigned for use in switch mode power supplies and generalpurpos |