FDMC7570S N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The FDMC7570S is an N-Channel MOSFET manufactured by onsemi, rated for 25V drain-to-source voltage with continuous drain current of 27A at Ta and 40A at Tc. This device operates in the Surface Mount Power33 package and is part of the PowerTrench® and SyncFET™ series. The part is currently Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining surface mount compatibility and thermal performance characteristics.

Substiute Parts

FDMC7570S

onsemiIn Stock: 23222FDMC7570S Datasheet

Current PartRFQ

BSZ019N03LSATMA1

Infineon TechnologiesIn Stock: 10112BSZ019N03LSATMA1 Datasheet

SimilarRFQ

BSZ035N03MSGATMA1

Infineon TechnologiesIn Stock: 15213BSZ035N03MSGATMA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FDMC7570S is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 25V
• Continuous drain current at Tc must meet or exceed 40A
• On-resistance (Rds On) must not exceed specified maximum values
• Gate charge and input capacitance must remain within acceptable switching performance ranges
• Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

• Surface mount package configuration (8-PowerTDFN or equivalent)
• Pin configuration compatibility with Power33 or equivalent footprint

Compliance Requirements:

• RoHS3 compliance mandatory
• Moisture Sensitivity Level 1 (Unlimited) required

The identified substitute parts (BSZ019N03LSATMA1 and BSZ035N03MSGATMA1) meet these criteria with Vdss ratings of 30V, Tc current ratings of 40A, and equivalent surface mount packaging. Both parts maintain RoHS3 compliance and MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

FDMC7570S (Primary Part)

The FDMC7570S remains the primary selection when the exact 25V Vdss rating and 27A Ta current specification are required. This part is Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Current inventory of 23,200 pieces supports immediate availability.

BSZ019N03LSATMA1 (Infineon Substitute)

The BSZ019N03LSATMA1 provides equivalent performance with a higher Vdss rating of 30V and identical Tc current of 40A. This part features lower on-resistance (1.9 mOhm) and reduced gate charge (44 nC), resulting in improved switching efficiency. The 22A Ta rating is lower than the FDMC7570S but remains suitable for applications where Tc performance is the limiting factor. Active product status with RoHS3 compliance and unlimited MSL rating. Inventory of 10,100 pieces available.

BSZ035N03MSGATMA1 (Infineon Substitute)

The BSZ035N03MSGATMA1 offers 30V Vdss with identical Tc current of 40A. This part features higher on-resistance (3.5 mOhm) and increased gate charge (74 nC) compared to the primary part, resulting in higher switching losses. The 18A Ta rating is lower than both the FDMC7570S and BSZ019N03LSATMA1. This part is suitable for applications where thermal management is not constrained. Active product status with RoHS3 compliance and unlimited MSL rating. Inventory of 15,200 pieces available.

All three parts maintain identical operating temperature ranges (-55°C to 150°C), surface mount packaging (8-PowerTDFN), and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the BSZ019N03LSATMA1 directly replace the FDMC7570S in all applications?

A: The BSZ019N03LSATMA1 is electrically compatible for applications where the 25V Vdss requirement can be satisfied by the higher 30V rating. The lower Ta current (22A versus 27A) requires verification that the application does not depend on the 27A continuous current at ambient temperature. The improved on-resistance and reduced gate charge provide performance benefits in switching applications.

Q: What is the primary difference between the two Infineon substitutes?

A: The BSZ019N03LSATMA1 features lower on-resistance (1.9 mOhm) and gate charge (44 nC), making it suitable for high-efficiency switching applications. The BSZ035N03MSGATMA1 has higher on-resistance (3.5 mOhm) and gate charge (74 nC), resulting in greater power dissipation but potentially lower cost. Both maintain identical Tc current ratings of 40A.

Q: Are the package footprints identical between all three parts?

A: All three parts use the 8-PowerTDFN surface mount package. Physical footprint compatibility is maintained across the FDMC7570S, BSZ019N03LSATMA1, and BSZ035N03MSGATMA1.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are RoHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (Unlimited) rating. All parts are classified as Active in product status.

Q: What is the impact of the higher Vdss rating on the substitute parts?

A: The 30V Vdss rating on both Infineon substitutes provides additional voltage margin compared to the 25V FDMC7570S. This higher rating does not negatively impact performance in 25V applications and provides protection against voltage transients.

Q: How do the thermal characteristics compare?

A: The FDMC7570S dissipates 2.3W at Ta and 59W at Tc. Both Infineon substitutes dissipate 2.1W at Ta and 69W at Tc. The higher Tc dissipation in the substitutes reflects their higher current capability at case temperature. Thermal management design must account for these differences.

Q: Which substitute part should be selected for lowest switching losses?

A: The BSZ019N03LSATMA1 exhibits the lowest gate charge (44 nC) and lowest on-resistance (1.9 mOhm), resulting in reduced switching losses compared to both the FDMC7570S and BSZ035N03MSGATMA1.