DMN4026SSDQ-13 Equivalent & Substitute Parts

Part Overview

The DMN4026SSDQ-13 is a dual N-channel MOSFET array manufactured by Diodes Incorporated, rated for 40V drain-to-source voltage and 7A continuous drain current. This surface mount component is configured as a logic-level gate MOSFET in an 8-SOIC package and is currently in active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. Alternative models may be required due to inventory availability, manufacturing discontinuation, or design optimization for specific application requirements.

Substiute Parts

DMN4026SSDQ-13

Diodes IncorporatedIn Stock: 62696DMN4026SSDQ-13 Datasheet

Current PartRFQ

AO4840

Alpha & Omega Semiconductor Inc.In Stock: 54251AO4840 Datasheet

MFR RecommendedRFQ

AO4882

Alpha & Omega Semiconductor Inc.In Stock: 6322AO4882 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DMN4026SSDQ-13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss) must equal or exceed 40V
• Configuration must be 2 N-Channel (Dual) MOSFET array
• FET Feature must be Logic Level Gate
• Operating temperature range must encompass -55°C to 150°C
• RoHS3 compliance and MSL Level 1 status required

Mechanical Compatibility Criteria:

• Package must be 8-SOIC (0.154", 3.90mm Width)
• Surface mount mounting type
• Pin configuration must support dual N-channel topology

Performance Parameters:

• Continuous drain current (Id) at 25°C should be equal to or greater than 7A for direct substitution
• Rds On characteristics should maintain similar or superior on-resistance performance
• Gate charge and input capacitance values influence switching behavior but do not preclude substitution if electrical ratings are met

The substitute parts AO4882 and AO4840 meet the core electrical and mechanical requirements for circuit-level compatibility with the DMN4026SSDQ-13.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AO4882

The AO4882 is the preferred substitute for the DMN4026SSDQ-13. This part exceeds the original specification with 8A continuous drain current versus 7A, superior on-resistance performance (19 mOhm versus 24 mOhm), and lower gate charge (12 nC versus 19.1 nC). The AO4882 maintains identical voltage rating, package configuration, and operating temperature range. Product status is Active, ensuring long-term availability and supply chain stability. All compliance certifications (RoHS3, MSL Level 1) are equivalent.

Secondary Substitute: AO4840

The AO4840 provides functional equivalence with identical voltage rating and package configuration. However, this part is designated as "Not For New Designs" by the manufacturer, indicating potential discontinuation or limited future availability. The continuous drain current rating is 6A, which is below the original 7A specification. On-resistance is higher at 30 mOhm compared to 24 mOhm. The AO4840 is suitable only for legacy system maintenance or replacement applications where design changes are not feasible. All compliance certifications remain equivalent.

Selection Criteria:

For new circuit designs, the AO4882 is the recommended substitute due to active product status and superior electrical performance. The AO4840 should be selected only when circuit topology or design constraints specifically require its characteristics, or when replacing existing DMN4026SSDQ-13 components in fielded systems.

Frequently Asked Questions (FAQ)

Q: Can the AO4882 be used as a direct pin-for-pin replacement for the DMN4026SSDQ-13?

A: Yes. Both parts use the 8-SOIC package with identical pin pitch (0.154", 3.90mm width) and dual N-channel configuration. No PCB layout modifications are required for substitution.

Q: What is the significance of the "Not For New Designs" status on the AO4840?

A: This designation indicates the manufacturer does not recommend this part for new circuit development. It may be subject to discontinuation or limited production. The AO4840 should be used only for maintenance of existing systems or when design constraints prevent use of active alternatives.

Q: Does the higher gate charge of the DMN4026SSDQ-13 (19.1 nC) compared to the AO4882 (12 nC) affect circuit performance?

A: Gate charge influences switching speed and gate drive requirements. The DMN4026SSDQ-13 requires higher gate drive energy. When substituting with the AO4882, gate drive circuits may operate with reduced power dissipation. Existing gate drive designs will function with the AO4882 without modification.

Q: Are there differences in input capacitance between these parts?

A: Yes. The DMN4026SSDQ-13 has 1060 pF input capacitance, while the AO4882 has 415 pF and the AO4840 has 650 pF. Lower input capacitance reduces gate drive current requirements and improves high-frequency switching performance. These differences do not prevent substitution in standard applications.

Q: What is the maximum continuous drain current for each part?

A: DMN4026SSDQ-13: 7A; AO4882: 8A; AO4840: 6A. The AO4882 exceeds the original specification, while the AO4840 falls below it. For applications requiring the full 7A rating, the AO4882 is the appropriate choice.

Q: Do all three parts have identical RoHS and moisture sensitivity compliance?

A: Yes. All three parts are RoHS3 compliant and rated MSL Level 1 (Unlimited). No compliance differences exist between the main part and substitutes.

Q: What is the on-resistance difference between the DMN4026SSDQ-13 and AO4882?

A: The DMN4026SSDQ-13 has 24 mOhm on-resistance at 6A, 10V gate voltage. The AO4882 has 19 mOhm at 8A, 10V gate voltage. The AO4882 exhibits lower on-resistance, resulting in reduced power dissipation and improved thermal performance in switching applications.

Q: Can the AO4840 be used in applications requiring 7A continuous current?

A: No. The AO4840 is rated for 6A maximum continuous drain current. Using it in 7A applications would exceed its electrical rating and may result in device failure or reduced reliability.

Q: Are there any thermal performance differences between these parts?

A: Maximum power dissipation ratings differ: DMN4026SSDQ-13 (1.3W), AO4882 (2W), and AO4840 (2W). The substitute parts have higher power ratings, indicating improved thermal capability. All parts operate across the same temperature range (-55°C to 150°C).