FSB50760SFS Equivalent & Substitute Parts

Part Overview

The FSB50760SFS is a Motion SPM® 5 SuperFET® power driver module featuring a 3-phase MOSFET configuration rated for 600V and 3.6A operation. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. The module utilizes a 23-PowerSMD surface mount package with gull wing leads and provides 1500Vrms isolation capability.

Substiute Parts

FSB50760SFS

onsemiIn Stock: 1101FSB50760SFS Datasheet

Current PartRFQ

NFA50460R4B

onsemiIn Stock: 1316NFA50460R4B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FSB50760SFS is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage rating: 600V minimum
• Current rating: 3.6A minimum
• Isolation voltage: 1500Vrms
• Configuration: 3-phase topology
• Semiconductor type: MOSFET or IGBT (both acceptable for power driver module applications)

Mechanical Compatibility Criteria:

• Package family: 23-PowerSMD or 23-PowerDIP module series
• Mounting compatibility: Surface mount or through-hole variants within the Motion SPM® 5 family

Compliance Requirements:

• RoHS3 compliance
• REACH unaffected status
• ECCN EAR99 classification

The NFA50460R4B qualifies as a substitute based on matching voltage (600V), exceeding current requirements (4A vs. 3.6A), maintaining isolation specification (1500Vrms), preserving 3-phase inverter configuration, and meeting all regulatory compliance standards within the Motion SPM® 5 product family.

Parameter Comparison

Engineering Selection Recommendations

The NFA50460R4B is an active production substitute for the obsolete FSB50760SFS. Both components maintain identical voltage and isolation specifications (600V, 1500Vrms) and 3-phase topology. The substitute provides increased current capacity (4A vs. 3.6A), offering design margin for the same electrical class.

Key considerations for selection:

Packaging Transition: The substitute transitions from surface mount (23-PowerSMD, gull wing) to through-hole (23-PowerDIP). PCB layout and assembly process modifications are required.

Semiconductor Technology: The substitute employs IGBT technology versus the original MOSFET design. Both technologies are functionally compatible within the Motion SPM® 5 family for 3-phase power driver applications at these voltage and current ratings.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring equivalent environmental and regulatory standing.

Availability: The substitute is in active production with confirmed inventory availability, addressing the obsolescence status of the original part.

Frequently Asked Questions (FAQ)

Q: Can the NFA50460R4B directly replace the FSB50760SFS without circuit modifications?

A: Electrical substitution is valid based on voltage, current, isolation, and configuration parameters. However, the packaging change from surface mount to through-hole requires PCB redesign and assembly process changes.

Q: What is the significance of the MOSFET-to-IGBT technology change?

A: Both semiconductor types are qualified within the Motion SPM® 5 family for identical voltage and current classes. The IGBT variant (NFA50460R4B) is the active production equivalent and maintains functional compatibility for 3-phase power driver applications.

Q: Are there any current rating implications when using the 4A substitute for a 3.6A application?

A: The higher current rating (4A) of the substitute provides additional design margin and thermal headroom for the same application requirements. No derating or performance degradation occurs.

Q: Does the through-hole package affect reliability or performance?

A: Package type (