AOL1418 Equivalent & Substitute Parts

Part Overview

The AOL1418 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain current of 15A at Ta and 85A at Tc. This device is packaged in the UltraSO-8™ surface mount configuration and is designed for power switching applications requiring low on-resistance performance.

The AOL1418 carries an Obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this component.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	30	V
Current - Continuous Drain (Id) @ 25°C	15A (Ta), 85A (Tc)	A
Rds On (Max) @ Id, Vgs	6 mOhm @ 20A, 10V	mOhm
Vgs(th) (Max) @ Id	2.6	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	32	nC @ 4.5V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	1600	pF @ 15V
Power Dissipation (Max)	2.08W (Ta), 100W (Tc)	W
Operating Temperature	-55 to 175	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	UltraSO-8™ (3-PowerSMD, Flat Leads)	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the AOL1418 is determined by strict equivalence across the following critical parameters:

Voltage Rating: Drain-to-source voltage (Vdss) must equal 30V to ensure compatibility with the original circuit design and voltage stress limits.

Channel Type & Technology: The substitute must be an N-Channel MOSFET using Metal Oxide technology to maintain functional equivalence in switching applications.

On-Resistance (Rds On): The maximum on-resistance specification must not exceed the original device specification to preserve power dissipation characteristics and thermal performance.

Gate Threshold Voltage (Vgs(th)): The threshold voltage must remain within acceptable limits to ensure proper gate drive compatibility and switching behavior.

Operating Temperature Range: The substitute must support the full operating temperature range of -55°C to 175°C (TJ) to maintain reliability across all environmental conditions.

Mounting Type & Surface Mount Compatibility: The substitute must be a surface mount device to ensure compatibility with existing PCB layouts and assembly processes.

Moisture Sensitivity Level (MSL): The substitute must maintain MSL 1 (Unlimited) classification to ensure handling and storage compatibility.

The PSMN6R0-30YL,115 manufactured by Nexperia USA Inc. meets these substitution criteria across all specified parameters.

Parameter Comparison

Parameter	AOL1418 (Alpha & Omega)	PSMN6R0-30YL,115 (Nexperia)	Match Status
FET Type	N-Channel	N-Channel	Equivalent
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	Equivalent
Drain to Source Voltage (Vdss)	30 V	30 V	Equivalent
Current - Continuous Drain (Id) @ 25°C	15A (Ta), 85A (Tc)	79A (Tc)	Substitute Exceeds
Rds On (Max) @ Id, Vgs	6 mOhm @ 20A, 10V	6 mOhm @ 15A, 10V	Equivalent
Vgs(th) (Max) @ Id	2.6 V @ 250µA	2.15 V @ 1mA	Substitute Lower
Gate Charge (Qg) (Max) @ Vgs	32 nC @ 4.5V	24 nC @ 10V	Substitute Lower
Vgs (Max)	±20 V	±20 V	Equivalent
Input Capacitance (Ciss) (Max) @ Vds	1600 pF @ 15V	1425 pF @ 12V	Substitute Lower
Operating Temperature	-55 to 175 °C (TJ)	-55 to 175 °C (TJ)	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Primary Substitute: PSMN6R0-30YL,115

The PSMN6R0-30YL,115 is the manufacturer-recommended substitute for the AOL1418. This device maintains electrical equivalence across all critical parameters including voltage rating, on-resistance, gate threshold voltage, and operating temperature range.

The PSMN6R0-30YL,115 provides superior continuous drain current capability (79A at Tc versus 85A at Tc for the AOL1418), lower gate charge (24 nC versus 32 nC), and reduced input capacitance (1425 pF versus 1600 pF). These characteristics result in improved switching performance and reduced gate drive requirements.

Product Status Considerations:

The AOL1418 carries an Obsolete status, making substitution necessary for ongoing production support. The PSMN6R0-30YL,115 carries a Not For New Designs status, indicating it remains available for legacy system support but is not recommended for new product development.

Compliance & Certification:

Both devices maintain REACH Unaffected status and carry EAR99 export classification. The PSMN6R0-30YL,115 is RoHS3 Compliant, ensuring environmental compliance for applications subject to RoHS requirements.

Package Consideration:

The AOL1418 uses the UltraSO-8™ package (3-PowerSMD, Flat Leads), while the PSMN6R0-30YL,115 uses the LFPAK56 package (SC-100, SOT-669). PCB layout modification is required for this substitution. The LFPAK56 package provides enhanced thermal performance through improved power dissipation characteristics (55W at Tc versus 100W at Tc for the AOL1418 at Tc rating).

Frequently Asked Questions (FAQ)

Q: Can the PSMN6R0-30YL,115 be used as a direct pin-for-pin replacement for the AOL1418?

A: No. While both devices are N-Channel MOSFETs with identical voltage ratings and on-resistance specifications, they use different package types. The AOL1418 uses UltraSO-8™ (3-PowerSMD, Flat Leads) while the PSMN6R0-30YL,115 uses LFPAK56 (SC-100, SOT-669). PCB layout and footprint modifications are required.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Drain-to-source voltage rating (Vdss) of 30V, (2) N-Channel MOSFET technology, (3) On-resistance (Rds On) specification of 6 mOhm maximum, (4) Gate threshold voltage within acceptable operating range, (5) Operating temperature range of -55°C to 175°C (TJ), and (6) Moisture Sensitivity Level MSL 1 (Unlimited).

Q: Does the PSMN6R0-30YL,115 provide better performance than the AOL1418?

A: The PSMN6R0-30YL,115 provides lower gate charge (24 nC versus 32 nC) and reduced input capacitance (1425 pF versus 1600 pF), resulting in faster switching response and reduced gate drive power requirements. Both devices maintain equivalent on-resistance and voltage ratings.

Q: What is the significance of the product status difference between these devices?

A: The AOL1418 is Obsolete, indicating it is no longer manufactured and supply is limited. The PSMN6R0-30YL,115 is Not For New Designs, indicating it remains available for legacy system support but should not be used in new product development. For ongoing production of existing systems, the PSMN6R0-30YL,115 provides a viable alternative.

Q: Are there thermal performance differences between the AOL1418 and PSMN6R0-30YL,115?

A: The AOL1418 is rated for 100W power dissipation at Tc, while the PSMN6R0-30YL,115 is rated for 55W at Tc. The LFPAK56 package used by the PSMN6R0-30YL,115 provides enhanced thermal performance through improved heat dissipation characteristics compared to the UltraSO-8™ package.

Q: What compliance certifications apply to both devices?

A: Both the AOL1418 and PSMN6R0-30YL,115 maintain REACH Unaffected status and carry EAR99 export classification. The PSMN6R0-30YL,115 is additionally RoHS3 Compliant. Both devices carry Moisture Sensitivity Level MSL 1 (Unlimited).

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