AO4459 footprint, schematic symbol and 3D model by Alpha & Omega Semiconductors

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Part Number AO4459
Manufacturer Alpha & Omega Semiconductors
Pin Count 8
Part Category MOSFET (P-Channel)
Package Category Small Outline Packages
Footprint Name Small Outline Packages - SO8(SOP-8L)
Released Date Jul 22, 2026
Last Modified Date Jul 22, 2026 4:17 AM UTC
Pinout / Pin List Click Here (Member Only)

AO4459 Details

Manufacturer Part Number:
AO4459
Rohs Code:
Yes
Part Life Cycle Code:
Active
Package Description:
SOIC-8
Country Of Origin:
Mainland China
ECCN Code:
EAR99
Manufacturer:
Alpha & Omega Semiconductor
YTEOL:
7.07
Configuration:
SINGLE WITH BUILT-IN DIODE
DS Breakdown Voltage-Min:
30 V
Drain Current-Max (ID):
6.5 A
Drain-source On Resistance-Max:
0.046 Ω
FET Technology:
METAL-OXIDE SEMICONDUCTOR
Feedback Cap-Max (Crss):
65 pF
JESD-30 Code:
R-PDSO-G8
Number of Elements:
1
Number of Terminals:
8
Operating Mode:
ENHANCEMENT MODE
Operating Temperature-Max:
150 °C
Operating Temperature-Min:
-55 °C
Package Body Material:
PLASTIC/EPOXY
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE
Polarity/Channel Type:
P-CHANNEL
Surface Mount:
YES
Terminal Form:
GULL WING
Terminal Position:
DUAL
Transistor Application:
SWITCHING
Transistor Element Material:
SILICON

AO4459 Frequently Asked Questions (FAQs)

The maximum junction temperature of the AO4459 is 150°C.
To ensure proper biasing, the AO4459 requires a minimum of 4.5V on the gate-source voltage (Vgs) and a maximum of 10V on the drain-source voltage (Vds).
To minimize thermal resistance, it is recommended to use a thermal pad on the bottom of the package, and to use a copper pour on the PCB to dissipate heat. A minimum of 2oz copper thickness is recommended.
Yes, the AO4459 can be used in high-frequency switching applications up to 1MHz. However, it's essential to ensure proper PCB layout and decoupling to minimize ringing and EMI.
To protect the AO4459, it's recommended to use a voltage regulator to limit the input voltage, and to add overcurrent protection using a fuse or a current-sensing resistor.

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