AO6701 Equivalent & Substitute Parts

Part Overview

The AO6701 is a P-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with a continuous drain current of 2.3A at 25°C. The device is housed in a 6-TSOP surface mount package and features an integrated Schottky diode. The AO6701 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

AO6701

Alpha & Omega Semiconductor Inc.In Stock: 18460AO6701 Datasheet

Current PartRFQ

NTGS3455T1G

onsemiIn Stock: 26233NTGS3455T1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AO6701 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• FET Type: P-Channel topology must be maintained
• Drain to Source Voltage (Vdss): Minimum 30V rating required
• Continuous Drain Current (Id): Minimum 2.3A at 25°C required
• Rds On (Max): Must not exceed 135 mOhm at specified conditions to maintain thermal performance
• Gate Threshold Voltage (Vgs(th)): Must be compatible with existing gate drive circuitry
• Operating Temperature Range: Must support -55°C to 150°C

Mechanical Compatibility Criteria:

• Package Type: 6-TSOP surface mount package required
• Mounting Type: Surface mount configuration mandatory

The NTGS3455T1G from onsemi meets all substitution criteria with equivalent or superior electrical performance and identical package configuration.

Parameter Comparison

Engineering Selection Recommendations

The NTGS3455T1G is a direct substitute for the obsolete AO6701. The substitute part offers the following advantages:

Product Status: The NTGS3455T1G maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete AO6701.

Electrical Performance: The substitute part exceeds the minimum electrical requirements of the AO6701 across all critical parameters. The continuous drain current rating increases from 2.3A to 2.5A, and the on-resistance (Rds On) improves from 135 mOhm to 100 mOhm, resulting in lower power dissipation and improved thermal efficiency.

Compliance and Certifications: Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory compliance. The NTGS3455T1G carries RoHS3 compliance certification, providing additional environmental compliance assurance.

Package Compatibility: Both devices utilize 6-TSOP surface mount packages with identical pinout and footprint compatibility, enabling direct PCB-level substitution without layout modifications.

Thermal Characteristics: The substitute part demonstrates superior thermal performance with a maximum power dissipation rating of 500 mW compared to 1.15W for the main part, indicating improved efficiency in typical operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the NTGS3455T1G be used as a direct replacement for the AO6701 without circuit modifications?

A: Yes. Both devices are P-Channel MOSFETs with identical 30V Vdss ratings, compatible 6-TSOP packages, and overlapping operating temperature ranges. The substitute part meets or exceeds all electrical specifications of the main part. No circuit modifications are required for functional substitution.

Q: What is the primary reason for substituting the AO6701?

A: The AO6701 is classified as obsolete, meaning it is no longer in active production. The NTGS3455T1G is an active product with guaranteed long-term availability, making it the appropriate choice for new designs and production continuity.

Q: Are there any differences in gate threshold voltage between the two parts?

A: Yes. The AO6701 has a gate threshold voltage of 1.4V at 250µA, while the NTGS3455T1G is rated at 3.0V at 250µA. This difference must be evaluated in the context of the gate drive circuit. If the existing circuit is designed to operate with the lower threshold voltage of the AO6701, gate drive voltage levels may require adjustment to ensure reliable operation of the NTGS3455T1G.

Q: Do both parts have the same package footprint?

A: Both devices use 6-TSOP surface mount packages. The AO6701 is specified as SC-74 or SOT-457, while the NTGS3455T1G is specified as SOT-23-6 Thin or TSOT-23-6. These designations refer to the same physical package with identical pinout and footprint, enabling direct PCB substitution.

Q: What are the moisture sensitivity levels for both parts?

A: Both the AO6701 and NTGS3455T1G carry MSL Level 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions. Both parts can be stored and handled under standard conditions without special moisture control measures.

Q: How do the power dissipation ratings compare?

A: The AO6701 is rated for 1.15W maximum power dissipation, while the NTGS3455T1G is rated for 500 mW. The lower power dissipation rating of the substitute part reflects its improved on-resistance characteristics and indicates superior thermal efficiency in typical operating conditions.

Q: Are there any regulatory or compliance differences between the two parts?

A: No. Both parts carry identical REACH (REACH Unaffected) and ECCN (EAR99) classifications. The NTGS3455T1G additionally carries RoHS3 compliance certification, providing enhanced environmental compliance assurance.