FSGM0465RWDTU Equivalent & Substitute Parts

Part Overview

The FSGM0465RWDTU is an offline flyback converter IC manufactured by onsemi, designed for isolated power supply applications. This device integrates an internal power switch and operates at 66kHz switching frequency with 70W power capability. The part is classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning. Active alternatives with comparable electrical and mechanical characteristics are available to support ongoing production and new designs.

Substiute Parts

FSGM0465RWDTU

onsemiIn Stock: 2239FSGM0465RWDTU Datasheet

Current PartRFQ

NCP11185A065PG

onsemiIn Stock: 3413NCP11185A065PG Datasheet

SimilarRFQ

FSGM0565RBLDTU

Fairchild SemiconductorIn Stock: 1344FSGM0565RBLDTU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSGM0465RWDTU are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 650V or higher
• Voltage - Supply Range: Overlapping or compatible input voltage window
• Frequency - Switching: 65kHz to 66kHz range
• Power Rating: Equal to or greater than 70W
• Fault Protection: Equivalent protection features
• Package Compatibility: Through-hole mounting with compatible pinout

Substitute Categories:

1. Parametric Equivalent (FSGM0565RBLDTU): Maintains identical electrical specifications and package form factor. Direct pin-compatible replacement with enhanced power rating (80W vs 70W) and active product status.

2. Functional Equivalent (NCP11185A065PG): Meets core flyback converter requirements with isolated output and comparable switching frequency (65kHz). Different package type (7-PDIP vs TO-220-6) requires circuit board redesign. Higher breakdown voltage (800V) and extended temperature range (-40°C to 150°C) provide additional design margin.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Board Redesign):

FSGM0565RBLDTU is the recommended substitute when board layout and component placement cannot be modified. This part maintains identical package geometry (TO-220-6 Full Pack, Formed Leads), electrical specifications (650V breakdown, 7.5V-26V supply range, 66kHz switching), and fault protection features. The increased power rating (80W vs 70W) provides additional design margin. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance and EAR99 classification match the original part.

For New Designs or Board Redesign Scenarios:

NCP11185A065PG offers enhanced specifications including higher breakdown voltage (800V) and extended operating temperature range (-40°C to 150°C). Active product status and established supply chain support long-term production. This option requires circuit board redesign due to different package type (7-PDIP vs TO-220-6). The 55W power rating is lower than the main part; this substitute is suitable only for applications requiring less than 55W output power. Supply voltage range (7.8V-16V) is narrower than the main part; verify compatibility with your input voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can FSGM0565RBLDTU be used as a direct drop-in replacement for FSGM0465RWDTU?

A: Yes. Both parts use identical TO-220-6 Full Pack, Formed Leads packaging with the same pinout. Electrical specifications including breakdown voltage (650V), supply voltage range (7.5V-26V), switching frequency (66kHz), and duty cycle (70%) are identical. The FSGM0565RBLDTU provides 80W power capability compared to 70W for the original part, making it a compatible upgrade.

Q: What are the key differences between FSGM0565RBLDTU and NCP11185A065PG?

A: The primary difference is package type. FSGM0565RBLDTU uses TO-220-6 Full Pack, Formed Leads (through-hole), while NCP11185A065PG uses 8-DIP (0.300", 7.62mm) packaging. This requires different circuit board layouts and cannot be used interchangeably without redesign. Additionally, NCP11185A065PG has no internal switch (external switch required), lower power rating (55W vs 70W-80W), and narrower supply voltage range (7.8V-16V vs 7.5V-26V).

Q: Is NCP11185A065PG suitable for my 70W application?

A: No. NCP11185A065PG is rated for 55W maximum power output. For applications requiring 70W or higher power delivery, use FSGM0465RWDTU or FSGM0565RBLDTU.

Q: What is the supply voltage compatibility for each part?

A: FSGM0465RWDTU and FSGM0565RBLDTU both accept 7.5V to 26V supply voltage. NCP11185A065PG accepts 7.8V to 16V. If your design uses supply voltages below 7.8V or above 16V, NCP11185A065PG is not compatible.

Q: Are all three parts RoHS3 compliant?

A: Yes. FSGM0465RWDTU, FSGM0565RBLDTU, and NCP11185A065PG are all ROHS3 compliant and REACH unaffected or affected as specified in their individual documentation.

Q: What is the switching frequency difference between these parts?

A: FSGM0465RWDTU and FSGM0565RBLDTU operate at 66kHz. NCP11185A065PG operates at 65kHz. This 1kHz difference is negligible for most applications and does not affect functional compatibility in typical flyback converter designs.