BSC032N04LSATMA1 Equivalent & Substitute Parts

Part Overview

The BSC032N04LSATMA1 is an N-Channel MOSFET manufactured by Infineon Technologies, part of the OptiMOS™ series. This device operates at 40V drain-to-source voltage with continuous drain current ratings of 21A at Ta and 98A at Tc. The component is housed in a PG-TDSON-8-6 surface mount package and maintains Active product status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Substiute Parts

BSC032N04LSATMA1

Infineon TechnologiesIn Stock: 4563BSC032N04LSATMA1 Datasheet

Current PartRFQ

FDMS8333L

onsemiIn Stock: 35167FDMS8333L Datasheet

DirectRFQ

DMTH4005SPSQ-13

Diodes IncorporatedIn Stock: 3291DMTH4005SPSQ-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BSC032N04LSATMA1 are qualified based on the following electrical and mechanical criteria:

Voltage Rating: All substitutes maintain 40V Vdss, ensuring compatibility with the same voltage class applications.

Continuous Drain Current: Substitute parts must provide continuous drain current ratings at Ta and Tc within acceptable operating ranges. The BSC032N04LSATMA1 specifies 21A (Ta) and 98A (Tc); substitutes are evaluated for equivalent or superior current handling capability.

On-State Resistance (Rds On): Maximum on-state resistance values determine conduction losses. The reference part specifies 3.2 mOhm @ 50A, 10V. Substitutes with comparable or lower Rds On values maintain thermal and efficiency characteristics.

Gate Charge (Qg): Switching speed and drive circuit requirements depend on gate charge. The reference part specifies 25 nC @ 10V. Substitutes with higher gate charge may require circuit evaluation but remain functionally compatible.

Input Capacitance (Ciss): Affects switching behavior and drive circuit design. The reference part specifies 1800 pF @ 20V.

Package Compatibility: All substitutes use surface mount packages compatible with PG-TDSON-8-6 footprints and pin configurations.

Compliance: All parts maintain ROHS3 compliance, MSL 1 rating, and Active product status.

Parameter Comparison

Engineering Selection Recommendations

FDMS8333L (onsemi PowerTrench®): This substitute provides equivalent voltage rating and comparable continuous drain current at Ta (22A vs. 21A). On-state resistance is marginally lower (3.1 mOhm vs. 3.2 mOhm), indicating superior conduction efficiency. However, gate charge is significantly higher (64 nC vs. 25 nC) and input capacitance is substantially elevated (4545 pF vs. 1800 pF), which may impact switching speed and drive circuit requirements. This part is suitable for applications where switching frequency is not critical and conduction losses are the primary design constraint. ROHS3 compliance and Active status confirm regulatory and supply continuity.

DMTH4005SPSQ-13 (Diodes Incorporated PowerDI5060-8): This substitute maintains equivalent voltage rating and comparable continuous drain current at Ta (20.9A vs. 21A). Continuous drain current at Tc is superior (100A vs. 98A), providing enhanced thermal performance. On-state resistance is slightly higher (3.7 mOhm vs. 3.2 mOhm), resulting in marginally increased conduction losses. Gate charge (49.1 nC) and input capacitance (3062 pF) are elevated relative to the reference part, affecting switching characteristics. The extended operating temperature range (-55 to 175°C vs. -55 to 150°C) and AEC-Q101 automotive qualification provide additional design margin for high-temperature applications. ROHS3 compliance and Active status confirm regulatory and supply continuity.

Selection Basis: Both substitutes are qualified based on Active product status, ROHS3 compliance, and electrical parameters within acceptable engineering tolerances. The choice between substitutes depends on application-specific priorities: conduction efficiency, switching frequency, thermal requirements, and automotive qualification needs.

Frequently Asked Questions (FAQ)

Q: Can FDMS8333L directly replace BSC032N04LSATMA1 in existing PCB layouts?

A: Direct PCB replacement is not recommended without layout verification. While both devices are surface mount N-Channel MOSFETs rated at 40V, the FDMS8333L uses an 8-PQFN (5x6) package versus the BSC032N04LSATMA1's PG-TDSON-8-6 package. Footprint, pin pitch, and thermal pad dimensions differ. PCB redesign or adapter solutions are required.

Q: What are the switching speed implications of higher gate charge in substitute parts?

A: Gate charge directly affects switching speed and drive circuit current requirements. The FDMS8333L (64 nC) and DMTH4005SPSQ-13 (49.1 nC) require higher gate charge compared to the BSC032N04LSATMA1 (25 nC). This increases switching transition time and may require drive circuit optimization to maintain switching frequency performance. Applications with fixed switching frequency may experience reduced efficiency.

Q: Is the DMTH4005SPSQ-13 suitable for automotive applications?

A: The DMTH4005SPSQ-13 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The BSC032N04LSATMA1 and FDMS8333L do not carry explicit automotive qualification in the provided specifications. If automotive compliance is required, DMTH4005SPSQ-13 is the appropriate selection.

Q: How do input capacitance differences affect circuit design?

A: Input capacitance (Ciss) influences gate drive circuit design and switching behavior. The BSC032N04LSATMA1 specifies 1800 pF, while FDMS8333L specifies 4545 pF and DMTH4005SPSQ-13 specifies 3062 pF. Higher input capacitance increases gate charge storage, requiring higher drive current or longer switching times. Circuit simulation or empirical testing is necessary to confirm compatibility with existing gate drive circuits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The BSC032N04LSATMA1, FDMS8333L, and DMTH4005SPSQ-13 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8541.29.0095.

Q: What is the difference between Ta and Tc current ratings?

A: Ta represents continuous drain current at ambient temperature (25°C), while Tc represents continuous drain current at case temperature (25°C). Tc ratings are typically higher due to improved thermal coupling at the case. The BSC032N04LSATMA1 specifies 21A (Ta) and 98A (Tc), indicating significant thermal performance improvement when case temperature is controlled. Substitute selection should consider both ratings based on thermal management strategy.