FSB70625 Equivalent & Substitute Parts

Part Overview

The FSB70625 is a Power Driver Module MOSFET from onsemi's Motion SPM® 7 series, designed for 3-phase applications with a rated voltage of 250V and current capacity of 6.9A in a 27-PowerLQFN surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain compatibility across critical electrical parameters including voltage rating, isolation specification, and phase configuration while accommodating potential differences in current capacity and mounting technology.

Substiute Parts

FSB70625

onsemiIn Stock: 1064FSB70625 Datasheet

Current PartRFQ

FSB50825B

onsemiIn Stock: 1157FSB50825B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSB70625 are identified based on strict alignment with the following critical parameters:

• Voltage Rating: 250V (exact match required)
• Voltage - Isolation: 1500Vrms (exact match required)
• Configuration: 3 Phase (exact match required)
• Manufacturer: onsemi (same manufacturer preferred for consistency)
• Type: MOSFET Power Driver Module (functional equivalence)

Current capacity may vary within acceptable operational ranges for the target application. Mounting type and package configuration may differ to accommodate design flexibility, provided electrical specifications remain compatible. The FSB50825B qualifies as a substitute based on matching voltage, isolation, configuration, and manufacturer criteria, despite differences in current rating (3.6A vs. 6.9A) and mounting technology (Through Hole vs. Surface Mount).

Parameter Comparison

Engineering Selection Recommendations

Both the FSB70625 and FSB50825B are classified as obsolete products. Selection between these components should be based on the following criteria:

FSB70625 (Primary Reference)

• Higher current capacity (6.9A) suitable for applications requiring maximum power handling
• Surface mount package for compact PCB integration
• Motion SPM® 7 series implementation

FSB50825B (Substitute Alternative)

• Lower current capacity (3.6A) appropriate for reduced power applications
• Through-hole package for applications requiring mechanical robustness or legacy board compatibility
• Motion SPM® 5 series implementation
• Both components maintain identical voltage rating (250V) and isolation specification (1500Vrms)

Substitution is valid when application current requirements do not exceed 3.6A and when mounting technology compatibility can be accommodated in the design. Both components carry REACH Unaffected status and equivalent regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can FSB50825B directly replace FSB70625 in all applications? A: Direct replacement is valid only when the application current requirement does not exceed 3.6A. The FSB50825B has a lower current rating (3.6A) compared to the FSB70625 (6.9A). Verify that your circuit design operates within the 3.6A maximum specification before substitution.

Q: What are the key compatibility criteria for these parts? A: The critical compatibility parameters are voltage rating (250V), isolation voltage (1500Vrms), and 3-phase configuration. Both parts meet these specifications. Current capacity and mounting type are secondary considerations dependent on specific application requirements.

Q: How do the mounting technologies differ between these parts? A: The FSB70625 uses surface mount technology (27-PowerLQFN Module), while the FSB50825B uses through-hole technology (23-PowerDIP Module). Surface mount packages offer compact PCB footprints; through-hole packages provide mechanical stability and are compatible with legacy board designs.

Q: Are there regulatory or compliance differences between these parts? A: Both parts carry identical REACH Unaffected status and equivalent regulatory compliance (ECCN: EAR99, HTSUS: 8542.39.0001). No compliance barriers exist for substitution.

Q: Why are both parts classified as obsolete? A: Both the FSB70625 and FSB50825B are obsolete products from onsemi's Motion SPM series. Obsolete status indicates these components are no longer in active production. Substitution decisions should account for long-term availability and supply chain considerations.

Q: What is the significance of the different series designations (SPM® 7 vs. SPM® 5)? A: The series designation indicates the generation of the Motion SPM product line. SPM® 7 represents a newer generation than SPM® 5. Both generations maintain compatible electrical specifications for the parameters listed, but design improvements and feature sets may differ between generations.