FSB50260SF Equivalent & Substitute Parts

Part Overview

The FSB50260SF is a Power Driver Module MOSFET designed for 3-phase motor control applications, rated at 600V and 1.7A. Manufactured by onsemi in a 23-PowerDIP Module package, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for system redesign, maintenance, and production continuity in applications requiring 3-phase power switching at 600V.

Substiute Parts

FSB50260SF

onsemiIn Stock: 2331FSB50260SF Datasheet

Current PartRFQ

FSB50660SF

Fairchild SemiconductorIn Stock: 2156FSB50660SF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FSB50260SF is determined by the following critical parameters:

• Voltage Rating: 600V (exact match required)
• Configuration: 3-phase topology (exact match required)
• Isolation Voltage: 1500Vrms (exact match required)
• Mounting Type: Through Hole (exact match required)
• Current Rating: Minimum 1.7A (equal or higher acceptable)
• Package Type: 23-PowerDIP Module form factor (mechanical compatibility required)

The FSB50660SF meets these substitution criteria as an active product within the Motion SPM® 5 SuperFET® series, maintaining identical voltage, isolation, configuration, and mounting specifications while providing higher current capacity (3.1A vs. 1.7A).

Parameter Comparison

Engineering Selection Recommendations

The FSB50660SF is a direct substitute for the obsolete FSB50260SF based on the following factors:

• Both components maintain identical electrical specifications for voltage (600V), isolation (1500Vrms), and 3-phase configuration
• The FSB50660SF is an active product, ensuring availability and supply chain continuity
• Current capacity is increased (3.1A vs. 1.7A), providing design margin and thermal headroom in motor control applications
• Both components share identical export classification (EAR99) and tariff codes (8542.39.0001)
• Package form factor remains 23-PowerDIP Module with through-hole mounting, maintaining PCB compatibility with minor dimensional tolerance consideration (0.573" vs. 0.551" width)

Frequently Asked Questions (FAQ)

Q: Can FSB50660SF directly replace FSB50260SF without PCB modifications?

A: The FSB50660SF maintains the same 23-PowerDIP Module through-hole footprint and pin configuration. Minor dimensional differences (0.573" vs. 0.551" width) are within standard PCB layout tolerances for through-hole components. No circuit modifications are required.

Q: What is the significance of the higher current rating (3.1A vs. 1.7A)?

A: The FSB50660SF's increased current capacity provides additional thermal margin and allows operation at higher motor control loads without thermal derating. This is a beneficial characteristic for system reliability and does not create compatibility issues.

Q: Are there compliance or certification differences between these parts?

A: Both components share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, indicating equivalent export and tariff treatment.

Q: Why is the FSB50260SF listed as obsolete?

A: The FSB50260SF has been discontinued by onsemi. The FSB50660SF represents the active equivalent within the Motion SPM® 5 SuperFET® product line for 3-phase 600V motor control applications.

Q: Are there any electrical parameter mismatches between these substitutes?

A: No. Both components maintain identical voltage rating (600V), isolation voltage (1500Vrms), configuration (3-phase), and mounting type (through-hole). The only difference is the current rating, where the substitute provides higher capacity.