FDMS2506SDC N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The FDMS2506SDC is an N-Channel MOSFET manufactured by onsemi, rated for 25V drain-to-source voltage with continuous drain current of 39A (Ta) and 49A (Tc). This device features the Dual Cool™, PowerTrench®, and SyncFET™ technology series and is packaged in an 8-PQFN (5x6) surface mount configuration. The FDMS2506SDC is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Substiute Parts

FDMS2506SDC

onsemiIn Stock: 1418FDMS2506SDC Datasheet

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BSZ013NE2LS5IATMA1

Infineon TechnologiesIn Stock: 43178BSZ013NE2LS5IATMA1 Datasheet

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CSD16401Q5

Texas InstrumentsIn Stock: 19852CSD16401Q5 Datasheet

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IRFH5300TRPBF

Infineon TechnologiesIn Stock: 35386IRFH5300TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDMS2506SDC is determined by alignment of the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): 25V minimum rating required
• Continuous Drain Current: Minimum 39A (Ta) or 49A (Tc) to maintain performance envelope
• On-Resistance (Rds On): Comparable values to ensure thermal and efficiency characteristics
• Gate Threshold Voltage: Within acceptable range for drive circuit compatibility
• Operating Temperature Range: -55°C to 150°C minimum

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount required
• Package Classification: 8-pin PowerTDFN or equivalent footprint compatibility
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for handling consistency

The substitute parts listed below meet these criteria with varying degrees of parameter alignment. Parts are grouped by their suitability for direct replacement based on electrical performance and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CSD16401Q5 (Texas Instruments)

The CSD16401Q5 provides the closest electrical alignment to the FDMS2506SDC. Both devices share identical 25V Vdss ratings and comparable continuous drain current specifications (38A Ta vs. 39A Ta). The CSD16401Q5 maintains similar on-resistance characteristics (1.6 mOhm vs. 1.45 mOhm) and operates across the same temperature range. The device is actively manufactured and carries ROHS3 compliance certification. Package footprint compatibility exists between the 8-VSON-CLIP (5x6) and the original 8-PQFN (5x6), requiring PCB layout verification for pin-to-pin alignment.

Secondary Substitute: BSZ013NE2LS5IATMA1 (Infineon Technologies)

The BSZ013NE2LS5IATMA1 offers active product status and meets the 25V Vdss requirement. Continuous drain current is lower (32A Ta, 40A Tc) compared to the FDMS2506SDC, making this option suitable for applications with reduced current demands. On-resistance is marginally superior (1.3 mOhm vs. 1.45 mOhm). The PG-TSDSON-8-FL package differs from the original 8-PQFN footprint and requires PCB redesign. ROHS3 compliance and REACH unaffected status are confirmed.

Alternative Substitute: IRFH5300TRPBF (Infineon Technologies)

The IRFH5300TRPBF operates at 30V Vdss, exceeding the FDMS2506SDC specification by 5V. Continuous drain current (40A Ta, 100A Tc) exceeds original specifications. On-resistance is comparable (1.4 mOhm). Gate charge is elevated (120 nC vs. 93 nC), potentially affecting switching speed in drive-limited circuits. The 8-PQFN (5x6) package matches the original footprint. ROHS3 compliance and REACH unaffected status are confirmed. This device is suitable for applications where higher voltage rating provides design margin.

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity classification, REACH unaffected status, and EAR99 export classification consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can the CSD16401Q5 be used as a direct drop-in replacement for the FDMS2506SDC?

A: Electrical compatibility is confirmed across all critical parameters. Package footprint compatibility requires verification. The CSD16401Q5 uses an 8-VSON-CLIP (5x6) package while the FDMS2506SDC uses 8-PQFN (5x6). Pin assignments and pad layouts must be compared against PCB artwork to confirm mechanical compatibility.

Q: What is the primary limitation of the BSZ013NE2LS5IATMA1 as a substitute?

A: The continuous drain current rating is lower (32A Ta, 40A Tc) compared to the FDMS2506SDC (39A Ta, 49A Tc). Applications requiring the full current envelope of the original device may experience performance degradation. Additionally, the PG-TSDSON-8-FL package differs from the original 8-PQFN footprint, necessitating PCB layout modifications.

Q: Why is the IRFH5300TRPBF listed as an alternative rather than a primary substitute?

A: The IRFH5300TRPBF operates at 30V Vdss, which exceeds the FDMS2506SDC specification of 25V. While this provides design margin in voltage-limited applications, it introduces a parameter deviation from the original specification. Gate charge is also elevated (120 nC vs. 93 nC), which may affect switching characteristics in circuits with limited gate drive capability.

Q: Are all substitute parts compliant with current regulatory requirements?

A: All three substitute parts carry ROHS3 compliance certification and REACH unaffected status. The original FDMS2506SDC does not specify RoHS status. Regulatory compliance verification against specific application requirements is necessary.

Q: What considerations apply to package substitution?

A: The CSD16401Q5 and BSZ013NE2LS5IATMA1 use different package designations than the original FDMS2506SDC. Physical footprint, pad layout, thermal characteristics, and PCB routing must be evaluated. The IRFH5300TRPBF maintains the 8-PQFN (5x6) package designation, reducing mechanical redesign requirements.

Q: How do gate charge differences affect circuit performance?

A: Gate charge (Qg) determines the charge required to switch the device. The FDMS2506SDC requires 93 nC at 10V. The CSD16401Q5 requires only 29 nC at 4.5V, reducing gate drive power requirements. The IRFH5300TRPBF requires 120 nC at 10V, increasing gate drive demands. Drive circuit capability must be assessed for each substitute.

Q: What is the significance of on-resistance (Rds On) differences?

A: On-resistance directly affects power dissipation and thermal performance. The FDMS2506SDC specifies 1.45 mOhm at 30A, 10V. Substitute parts range from 1.3 mOhm (BSZ013NE2LS5IATMA1) to 1.6 mOhm (CSD16401Q5). Lower on-resistance reduces conduction losses; higher values increase thermal load. Application thermal budget must be evaluated.

Q: Are there inventory considerations for substitute selection?

A: Inventory levels are provided for reference only and do not constitute a selection criterion. The CSD16401Q5 has 19,800 units in stock, the IRFH5300TRPBF has 35,300 units, and the BSZ013NE2LS5IATMA1 has 43,120 units. Availability should be confirmed with component distributors for production requirements.