FSDM0465REWDTU Equivalent & Substitute Parts

Part Overview

The FSDM0465REWDTU is an offline flyback converter IC manufactured by onsemi, designed for isolated power supply applications. This device operates at 66kHz switching frequency with 56W power output capability and integrates an internal power switch. The part is classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning.

Substiute Parts

FSDM0465REWDTU

onsemiIn Stock: 1427FSDM0465REWDTU Datasheet

Current PartRFQ

NCP11187A065PG

onsemiIn Stock: 4072NCP11187A065PG Datasheet

MFR RecommendedRFQ

FSDM0565REWDTU

onsemiIn Stock: 25121FSDM0565REWDTU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSDM0465REWDTU are classified into two categories based on substitution criteria:

Parametric Equivalent (Same Package Family): The FSDM0565REWDTU maintains identical packaging (TO-220F-6L), topology (Flyback), supply voltage range (8V ~ 20V), switching frequency (66kHz), duty cycle (82%), and operating temperature range (-25°C ~ 85°C). The primary difference is increased power output (70W vs 56W). This part qualifies as a direct parametric equivalent suitable for applications requiring the same form factor and electrical interface.

Functional Equivalent (Different Package): The NCP11187A065PG provides equivalent flyback converter functionality with isolated output and comparable switching frequency (65kHz). However, this part operates with different supply voltage parameters (7.8V ~ 16V), higher breakdown voltage (800V), lower startup voltage (2.1V), and different packaging (7-PDIP vs TO-220F-6L). This substitution requires circuit redesign considerations due to package incompatibility and modified electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct PCB Replacement: The FSDM0565REWDTU is the preferred substitute when PCB layout and form factor must remain unchanged. Both parts share identical packaging, supply voltage specifications, switching frequency, and duty cycle. The increased power rating (70W vs 56W) provides design margin without requiring circuit modifications. Both parts maintain obsolete status with equivalent compliance certifications (ROHS3).

For New Design or Redesign Applications: The NCP11187A065PG represents an active product with extended operating temperature range (-40°C ~ 150°C) and enhanced fault protection features including short circuit detection. This part requires PCB redesign due to different packaging (7-PDIP vs TO-220F-6L) and modified electrical specifications. The lower startup voltage (2.1V) and higher breakdown voltage (800V) may require circuit topology adjustments. Selection of this part is appropriate when design flexibility exists and long-term component availability is prioritized.

Frequently Asked Questions (FAQ)

Q: Can FSDM0565REWDTU be used as a direct drop-in replacement for FSDM0465REWDTU?

A: Yes. Both parts use identical TO-220F-6L packaging, supply voltage range (8V ~ 20V), switching frequency (66kHz), and duty cycle (82%). The FSDM0565REWDTU provides higher power output (70W vs 56W) without requiring circuit modifications. Pin-to-pin compatibility is maintained.

Q: What are the key differences between FSDM0565REWDTU and NCP11187A065PG?

A: The primary differences are packaging (TO-220F-6L vs 7-PDIP), internal switch configuration (integrated vs external), startup voltage (12V vs 2.1V), and operating temperature range (-25°C ~ 85°C vs -40°C ~ 150°C). The NCP11187A065PG requires PCB redesign and circuit topology modifications.

Q: Why does NCP11187A065PG have a lower startup voltage?

A: The NCP11187A065PG is designed with different control architecture (mWSaver™ series) that enables operation at lower supply voltages (7.8V ~ 16V minimum). This design difference necessitates circuit modifications if substituting into existing FSDM0465REWDTU designs.

Q: Are all three parts RoHS compliant?

A: Yes. FSDM0465REWDTU, FSDM0565REWDTU, and NCP11187A065PG are all ROHS3 compliant. All parts are REACH unaffected and classified under ECCN EAR99.

Q: Which substitute part should be selected for long-term availability?

A: The NCP11187A065PG carries active product status, ensuring long-term availability and manufacturing support. Both FSDM0465REWDTU and FSDM0565REWDTU are classified as obsolete. For new designs or redesign opportunities, NCP11187A065PG is the recommended selection.

Q: Can NCP11187A065PG be used in existing FSDM0465REWDTU circuit designs without modification?

A: No. The different packaging, startup voltage, and internal switch configuration require circuit redesign. Direct substitution is not possible without PCB layout changes and potential modifications to the power supply topology.