AON6980 MOSFET Equivalent & Substitute Parts

Part Overview

The AON6980 is a dual N-channel asymmetrical MOSFET array manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain currents of 18A and 27A. The device features logic level gate operation and is packaged in an 8-DFN (5x6) surface mount configuration. This part is designated as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain reliability for applications requiring comparable electrical and mechanical characteristics.

Substiute Parts

AON6980

Alpha & Omega Semiconductor Inc.In Stock: 19512AON6980 Datasheet

Current PartRFQ

AONY36306

Alpha & Omega Semiconductor Inc.In Stock: 828AONY36306 Datasheet

MFR RecommendedRFQ

FDMS3604S

onsemiIn Stock: 29236FDMS3604S Datasheet

MFR RecommendedRFQ

NTMFD4C20NT1G

onsemiIn Stock: 1759NTMFD4C20NT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AON6980 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-source voltage rating (Vdss) must equal or exceed 30V
• Continuous drain current (Id) must meet or exceed the application requirement (18A or 27A)
• On-resistance (Rds On) characteristics must support the thermal and efficiency requirements of the application
• Gate threshold voltage (Vgs(th)) must be compatible with the gate drive circuit
• Operating temperature range must span -55°C to 150°C

Mechanical Compatibility Criteria:

• Package type must be 8-DFN (5x6) or equivalent surface mount configuration
• Mounting type must be surface mount
• Pin configuration must support dual asymmetrical N-channel topology

Compliance Requirements:

• RoHS3 compliance required
• REACH unaffected status required
• Moisture sensitivity level (MSL) 1 or equivalent

The substitute parts listed below satisfy these criteria with variations in specific performance characteristics that do not preclude their use as functional equivalents in applications designed for the AON6980.

Parameter Comparison

Engineering Selection Recommendations

AONY36306 (Alpha & Omega Semiconductor Inc.)

The AONY36306 is an active product from the same manufacturer as the AON6980, providing the closest functional equivalence. It maintains the 30V Vdss rating and 8-DFN (5x6) package configuration. The AONY36306 offers improved on-resistance characteristics (6mOhm and 3.8mOhm) compared to the AON6980 (6.8mOhm), resulting in lower power dissipation. Gate threshold voltage remains compatible at 2.2V and 1.9V. The higher gate charge (30nC and 42nC versus 22nC) and input capacitance (1000pF and 1930pF versus 1095pF) require evaluation against gate drive circuit specifications. This part is recommended for applications where the AON6980 supply is exhausted and direct replacement is required.

FDMS3604S (onsemi)

The FDMS3604S is an active product with 30V Vdss rating and dual asymmetrical N-channel configuration. However, the continuous drain current ratings (13A and 23A) are lower than the AON6980 (18A and 27A), limiting its applicability to designs with reduced current requirements. The package type (Power56) differs from the AON6980 (8-DFN 5x6), requiring PCB layout modification. On-resistance (8mOhm) is slightly higher than the AON6980. This part is suitable only for applications with current requirements not exceeding 13A or 23A and where package redesign is acceptable.

NTMFD4C20NT1G (onsemi)

The NTMFD4C20NT1G is designated as obsolete, making it unsuitable for new designs or long-term supply assurance. Continuous drain current ratings (9.1A and 13.7A) are significantly lower than the AON6980, restricting its use to lower-current applications. The 8-DFN (5x6) package configuration matches the AON6980. Gate charge (9.3nC at 4.5V) is substantially lower, indicating faster switching characteristics. This part should not be selected for new applications due to obsolete status.

Frequently Asked Questions (FAQ)

Q: Can the AONY36306 be used as a direct replacement for the AON6980?

A: The AONY36306 is mechanically and electrically compatible with the AON6980 in the same 8-DFN (5x6) package. Both devices maintain 30V Vdss rating and dual asymmetrical N-channel configuration. Gate threshold voltage is compatible. However, the higher gate charge and input capacitance of the AONY36306 require verification against gate drive circuit specifications to ensure proper switching performance.

Q: What are the current limitations when substituting the FDMS3604S?

A: The FDMS3604S is rated for continuous drain currents of 13A and 23A, compared to the AON6980 at 18A and 27A. Applications requiring the full 27A rating cannot use the FDMS3604S. Additionally, the Power56 package differs from the AON6980's 8-DFN (5x6), necessitating PCB redesign.

Q: Why is the NTMFD4C20NT1G not recommended despite package compatibility?

A: The NTMFD4C20NT1G is designated as obsolete, eliminating long-term supply availability. Continuous drain current ratings (9.1A and 13.7A) are insufficient for applications designed around the AON6980's 18A and 27A ratings. Obsolete status precludes its selection for new designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The AON6980 and all listed substitute parts (AONY36306, FDMS3604S, NTMFD4C20NT1G) are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the primary difference in on-resistance between the AON6980 and AONY36306?

A: The AON6980 has an on-resistance of 6.8mOhm at 20A and 10V. The AONY36306 offers improved on-resistance at 6mOhm and 3.8mOhm, resulting in lower power dissipation and improved thermal performance in the same package footprint.

Q: Can gate drive circuits designed for the AON6980 be used with the AONY36306?

A: Gate threshold voltage compatibility (2.2V and 1.9V for AONY36306 versus 2.2V for AON6980) is maintained. However, the higher gate charge (30nC and 42nC versus 22nC) and input capacitance (1000pF and 1930pF versus 1095pF) may affect switching speed and gate drive current requirements. Gate drive circuit specifications must be reviewed to confirm adequate drive capability.

Q: What operating temperature range is supported by all substitute parts?

A: All substitute parts, including the AON6980, support an operating temperature range of -55°C to 150°C (junction temperature), ensuring compatibility across industrial and automotive temperature specifications.