FDD4685 FDD4685 is a P-Channel MOSFET from On Semiconductor. It offers 40V drain-source voltage, 8.4A (ambient) / 32A (case) drain current, and low 27 mΩ Rds(on).
Mfr Part #:

FDD4685

Available from 8 distributors
Mfr Name: On Semiconductor
On Semiconductor
FDD4685 is a P-Channel MOSFET from On Semiconductor. It offers 40V drain-source voltage, 8.4A (ambient) / 32A (case) drain current, and low 27 mΩ Rds(on).
✓ Total Stock: 254,211 pcs
$ Price Range: $0.56 - $1.76

FDD4685 Available from 8 distributors

✓ Authorised
✓ Non-Authorised

FDD4685 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Drain to Source Voltage (Vdss)
Drive Voltage (Max Rds On, Min Rds On)
FET Type
Gate Charge (Qg) (Max) @ Vgs
Input Capacitance (Ciss) (Max) @ Vds
Medical Grade
Mounting Type
Operating Temperature
Power Dissipation (Max)
Rds On (Max) @ Id, Vgs
Supplier Device Package
Tape & Reel
Technology
Vgs (Max)
Vgs(th) (Max) @ Id

FDD4685 Description

Short technical summary and product information.

The FDD4685 is a P-Channel power MOSFET manufactured by On Semiconductor. It is designed for power management and load switching applications where low on-resistance and efficient switching are required. The device is rated for a maximum drain-to-source voltage of 40 V and can conduct a continuous drain current of 8.4 A at ambient temperature and 32 A at case temperature.

 

The MOSFET uses metal-oxide semiconductor technology and features a maximum on-resistance of 27 mΩ at a drain current of 8.4 A with a 10 V gate drive. It supports gate drive voltages of 4.5 V and 10 V, making it compatible with both logic-level and standard gate drivers. The maximum gate-source voltage is ±20 V, and the threshold voltage is 3 V or less at 250 µA drain current. Total gate charge is 27 nC at 5 V, and input capacitance is 2380 pF at 20 V drain-source voltage.

 

The device is housed in a surface-mount TO-252-3 (DPak) package, also designated as SC-63, with a TO-252AA supplier package. Maximum power dissipation is 69 W at case temperature. The operating junction temperature range is -55°C to 150°C. The FDD4685 is well suited for high-side load switching, DC-DC converters, and battery management circuits.

FDD4685 Quick Information

Product Type: Power MOSFET
Series: PowerTrench
Canonical Name: FDD4685 P-Channel MOSFET
Subcategory: Single MOSFET

FDD4685 Compliance

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

FDD4685 Estimated Pricing

Qty Low High
1+ $1.76 $1.76
10+ $1.09 $1.09
100+ $0.72 $0.72
500+ $0.56 $0.56
2,500+ $0.56 $0.56

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

FDD4685 Features

  • P-Channel MOSFET in DPAK surface-mount package.
  • Rated for 40V drain-to-source voltage.
  • Maximum on-resistance is low at 27mΩ.
  • 8.4A ambient and 32A case current.
  • Operates from -55°C to 150°C.

FDD4685 Applications

  • Load switching in battery-powered devices.
  • Power management for DC-DC converters.
  • High-side load switch applications.
  • Motor control drive circuitry.

FDD4685 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the drain-to-source voltage rating of the FDD4685?

The maximum drain-to-source voltage (Vdss) is 40 V.

What is the package type for the FDD4685?

The device comes in a TO-252-3 (DPak) surface-mount package, also designated SC-63, with a TO-252AA supplier device package.

What is the operating temperature range of the FDD4685?

The operating junction temperature range is -55°C to 150°C.

Is the FDD4685 RoHS compliant?

Existing compliance data indicates the device is RoHS3 Compliant.

What is the maximum continuous drain current of the FDD4685?

The maximum continuous drain current is 8.4 A at ambient temperature and 32 A at case temperature.

What is the on-resistance of the FDD4685?

The maximum Rds(on) is 27 mΩ at a drain current of 8.4 A and gate-source voltage of 10 V.

What is the maximum gate-source voltage for the FDD4685?

The maximum gate-source voltage is ±20 V.

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