BSZ0703LSATMA1 Equivalent & Substitute Parts

Part Overview

The BSZ0703LSATMA1 is an N-Channel 60V 40A MOSFET manufactured by Infineon Technologies in the OptiMOS™ series. This device is designed for surface mount applications in the 8-PowerTDFN package configuration. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs. Active alternatives with comparable electrical characteristics and mechanical compatibility are available from the same manufacturer.

Substiute Parts

BSZ0703LSATMA1

Infineon TechnologiesIn Stock: 1169BSZ0703LSATMA1 Datasheet

Current PartRFQ

ISZ0703NLSATMA1

Infineon TechnologiesIn Stock: 19421ISZ0703NLSATMA1 Datasheet

MFR RecommendedRFQ

BSZ065N06LS5ATMA1

Infineon TechnologiesIn Stock: 3347BSZ065N06LS5ATMA1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BSZ0703LSATMA1 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain to Source Voltage (Vdss): Must equal 60V
• Continuous Drain Current (Id): Must equal or exceed 40A at Tc
• On-Resistance (Rds On): Must not exceed 6.5mOhm @ 20A, 10V
• Gate Threshold Voltage (Vgs(th)): Must equal 2.3V @ specified current
• Operating Temperature Range: Must support -55°C to 150°C minimum

Mechanical Compatibility Criteria:

• Package Type: 8-PowerTDFN
• Mounting Type: Surface Mount
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitutes meet these criteria with variations in product status, packaging configuration, and minor parameter differences documented in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

BSZ065N06LS5ATMA1 (Parametric Equivalent - Preferred for Direct Replacement)

This part is the primary substitute for the obsolete BSZ0703LSATMA1. It maintains identical electrical performance specifications including 60V Vdss, 40A continuous drain current, and 6.5mOhm on-resistance. The parametric equivalence ensures functional interchangeability in existing circuit designs. The part is currently in active production status with 3300 units in stock. It carries full RoHS3 compliance and MSL 1 rating. The package variant (PG-TSDSON-8-FL) is mechanically compatible with the 8-PowerTDFN footprint. This option is suitable for direct PCB layout reuse without design modification.

ISZ0703NLSATMA1 (MFR Recommended - Enhanced Performance Alternative)

This part represents the manufacturer's recommended upgrade path from the obsolete BSZ0703LSATMA1. It belongs to the newer OptiMOS™ 5 series with active product status and 19349 units in stock. The ISZ0703NLSATMA1 exceeds the original specifications with 56A continuous drain current capability (versus 40A) and an extended operating temperature range to 175°C (versus 150°C). The on-resistance specification of 7.3mOhm @ 20A, 10V is marginally higher than the original 6.5mOhm but remains within acceptable tolerance for most applications. Gate charge increases to 23nC @ 10V, and input capacitance reduces to 1400pF @ 30V. The package variant (PG-TSDSON-8-25) maintains 8-PowerTDFN mechanical compatibility. This option is recommended for new designs or applications requiring enhanced thermal performance and higher current capability.

Both substitutes are manufactured by Infineon Technologies, carry identical compliance certifications, and are available in production quantities.

Frequently Asked Questions (FAQ)

Q: Can the BSZ065N06LS5ATMA1 be used as a direct replacement for the BSZ0703LSATMA1 without PCB layout changes?

A: Yes. The BSZ065N06LS5ATMA1 is a parametric equivalent with identical electrical specifications (60V, 40A, 6.5mOhm Rds On) and compatible 8-PowerTDFN package footprint. No circuit design or PCB layout modifications are required.

Q: What is the difference between the two substitute parts?

A: The BSZ065N06LS5ATMA1 provides direct parametric equivalence to the original part. The ISZ0703NLSATMA1 is a newer generation OptiMOS™ 5 device with higher current rating (56A), extended temperature range (175°C), and increased gate charge. Selection depends on whether direct replacement or performance enhancement is required.

Q: Are there package compatibility concerns between the three parts?

A: All three parts use the 8-PowerTDFN package family. The specific package variants (PG-TSDSON-8-26, PG-TSDSON-8-25, PG-TSDSON-8-FL) are mechanically compatible with standard 8-PowerTDFN PCB footprints. Verify footprint dimensions with the respective datasheets if custom layouts are used.

Q: Does the higher on-resistance of the ISZ0703NLSATMA1 (7.3mOhm vs 6.5mOhm) affect circuit performance?

A: The 0.8mOhm difference represents approximately 12% higher on-resistance. This increases conduction losses proportionally. For applications with strict thermal or efficiency requirements, the BSZ065N06LS5ATMA1 with matched 6.5mOhm specification is preferred. For general-purpose applications, the ISZ0703NLSATMA1 remains acceptable.

Q: What is the significance of the gate charge difference between the substitutes?

A: The ISZ0703NLSATMA1 has higher gate charge (23nC @ 10V) compared to both the original (13nC @ 4.5V) and the parametric equivalent (13nC @ 4.5V). Higher gate charge requires more driver current and increases switching losses. For high-frequency switching applications, the lower gate charge of the BSZ065N06LS5ATMA1 is advantageous.

Q: Are both substitutes available in the same packaging formats as the original?

A: The BSZ0703LSATMA1 is supplied in Cut Tape (CT) & Digi-Reel® format. The BSZ065N06LS5ATMA1 maintains this packaging format. The ISZ0703NLSATMA1 is supplied in Tape & Reel (TR) format. Verify packaging requirements with procurement specifications before ordering.

Q: Do the substitutes maintain the same compliance certifications?

A: Yes. Both substitutes are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are REACH unaffected. ECCN and HTSUS classifications remain identical.