EMH2408-TL-H MOSFET Equivalent & Substitute Parts

Part Overview

The EMH2408-TL-H is a dual N-channel MOSFET array manufactured by onsemi, rated for 20V drain-to-source voltage and 4A continuous drain current in an 8-SMD surface mount package. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, channel configuration, and logic-level gate operation while accommodating package and current rating variations.

Substiute Parts

EMH2408-TL-H

onsemiIn Stock: 3271EMH2408-TL-H Datasheet

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NTJD4401NT1G

onsemiIn Stock: 125249NTJD4401NT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EMH2408-TL-H is determined by the following electrical and mechanical criteria:

Mandatory Compatibility Parameters:

• Drain-to-Source Voltage (Vdss): 20V minimum
• Configuration: Dual N-Channel MOSFET
• FET Feature: Logic Level Gate operation
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Continuous Drain Current (Id): Substitute must support application requirements; lower ratings require circuit redesign verification
• Package / Case: Different surface mount packages acceptable if PCB layout accommodates
• Power Dissipation: Thermal management must be evaluated for lower-rated substitutes
• Gate Charge and Input Capacitance: Switching characteristics may differ; circuit timing must be validated

The NTJD4401NT1G meets the mandatory electrical compatibility criteria (20V Vdss, dual N-channel, logic-level gate, surface mount) but operates at reduced continuous drain current (630mA versus 4A). This substitute is suitable for applications where the lower current rating satisfies circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

EMH2408-TL-H (Obsolete): The EMH2408-TL-H is classified as obsolete and should not be selected for new designs. Existing inventory is available (3200 pcs), but long-term supply cannot be assured. This part is REACH Unaffected and classified under ECCN EAR99.

NTJD4401NT1G (Active Substitute): The NTJD4401NT1G is an active product from onsemi and is the designated substitute for the EMH2408-TL-H. This part is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. The substitute maintains electrical compatibility across voltage rating and channel configuration. Selection of this part is appropriate for new designs and production transitions from the obsolete EMH2408-TL-H.

Application-Specific Considerations: The NTJD4401NT1G operates at 630mA continuous drain current compared to the EMH2408-TL-H rating of 4A. Circuit designs must confirm that the lower current rating satisfies application requirements. The NTJD4401NT1G features a smaller package footprint (6-TSSOP versus 8-SMD), requiring PCB layout modification. Higher on-resistance (375 mOhm versus 45 mOhm) results in increased power dissipation per switching cycle; thermal analysis is required for high-frequency switching applications.

Frequently Asked Questions (FAQ)

Q: Can the NTJD4401NT1G directly replace the EMH2408-TL-H without circuit modification?

A: Direct replacement is not possible due to package differences (6-TSSOP versus 8-SMD) and reduced current rating (630mA versus 4A). PCB layout must be redesigned to accommodate the smaller package. Circuit operation must be verified to confirm that 630mA continuous drain current satisfies application requirements.

Q: What is the primary reason for substituting the EMH2408-TL-H?

A: The EMH2408-TL-H is classified as obsolete. The NTJD4401NT1G is the active equivalent from the same manufacturer, ensuring continued supply and regulatory compliance for new designs and production transitions.

Q: Are there electrical compatibility concerns between these parts?

A: Both parts share identical drain-to-source voltage (20V), dual N-channel configuration, and logic-level gate operation. The primary electrical difference is continuous drain current rating (4A versus 630mA). Applications operating below 630mA continuous current experience no functional limitation. Applications requiring higher current must use alternative parts or parallel configurations.

Q: How do the on-resistance values affect circuit performance?

A: The NTJD4401NT1G exhibits higher on-resistance (375 mOhm @ 630mA, 4.5V) compared to the EMH2408-TL-H (45 mOhm @ 4A, 4.5V). In low-current applications, this difference results in proportionally higher power dissipation. Thermal management and circuit efficiency must be evaluated for the specific application.

Q: What package considerations apply to this substitution?

A: The EMH2408-TL-H uses an 8-SMD flat lead package, while the NTJD4401NT1G uses a 6-TSSOP (SC-88, SOT-363) package. These packages have different pin configurations and footprints. PCB redesign is required; direct footprint compatibility does not exist.

Q: Are there regulatory or compliance differences?

A: The NTJD4401NT1G is ROHS3 Compliant, while the EMH2408-TL-H compliance status is not specified. Both parts are REACH Unaffected and classified under ECCN EAR99. The NTJD4401NT1G meets current regulatory requirements for new product designs.

Q: What is the moisture sensitivity level for both parts?

A: Both the EMH2408-TL-H and NTJD4401NT1G carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage and handling.