LNK6415D Equivalent & Substitute Parts

Part Overview

The LNK6415D is an offline switch flyback converter IC manufactured by Power Integrations, part of the LinkSwitch™-3 series. This device integrates a high-voltage power switch with control circuitry for isolated flyback topology power supplies, rated for operation up to 85kHz switching frequency with 5.1W output power capability.

The LNK6415D has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this offline switch topology.

Substiute Parts

LNK6415D

Power IntegrationsIn Stock: 1068LNK6415D Datasheet

Current PartRFQ

LNK6417D

Power IntegrationsIn Stock: 8605LNK6417D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LNK6415D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Power Integrations
• Series: LinkSwitch™-3
• Topology: Flyback
• Output Isolation: Isolated
• Voltage - Breakdown: 725V
• Frequency - Switching: Up to 85kHz
• Duty Cycle: 55%
• Package / Case: 8-SOIC (0.154", 3.90mm Width), 7 Leads
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 150°C (TJ)
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit

Allowable Variation:

• Power (Watts): The LNK6415D operates at 5.1W. Substitute parts may operate at higher power ratings within the same package and topology constraints, provided all other parameters remain identical.

The LNK6417D meets all mandatory matching parameters and represents a parametric equivalent with increased power capability (7.5W versus 5.1W), making it suitable for direct substitution in applications where the higher power rating does not create thermal or design constraint conflicts.

Parameter Comparison

Engineering Selection Recommendations

The LNK6417D is a direct parametric equivalent to the LNK6415D for offline switch flyback converter applications. Both devices are RoHS Compliant and REACH Unaffected, meeting regulatory requirements for industrial and consumer applications.

The primary distinction is power output capability: the LNK6417D provides 7.5W versus the LNK6415D's 5.1W, while maintaining identical electrical characteristics, package form factor, and thermal operating range. This higher power rating makes the LNK6417D suitable for applications requiring increased output power within the same 8-SOIC package footprint.

Both parts are discontinued at DiGi Electronics. Selection between these devices should be based on application power requirements and PCB thermal management capacity. The LNK6417D's higher power rating does not introduce incompatibility with existing LNK6415D designs, provided thermal design margins are verified for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the LNK6417D replace the LNK6415D in existing designs?

A: Yes. The LNK6417D is a parametric equivalent with identical electrical specifications, package form factor, and operating characteristics. The higher power rating (7.5W versus 5.1W) does not create incompatibility. PCB layout and thermal management should be verified to ensure adequate heat dissipation for the higher power capability.

Q: What is the primary difference between these two parts?

A: The LNK6417D is rated for 7.5W output power, while the LNK6415D is rated for 5.1W. All other parameters—topology, voltage rating, switching frequency, package, and protection features—are identical.

Q: Are both parts in the same package?

A: Yes. Both the LNK6415D and LNK6417D use the 8-SOIC (0.154", 3.90mm Width) package with 7 leads, enabling direct PCB footprint compatibility.

Q: Do these parts have the same operating temperature range?

A: Yes. Both devices operate across -40°C to 150°C junction temperature range, supporting identical thermal specifications.

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

A: No. Both parts are RoHS Compliant, REACH Unaffected, and classified under ECCN EAR99, with identical regulatory status.

Q: What fault protection features are included?

A: Both devices include Current Limiting, Open Loop, Over Temperature, and Short Circuit protection, providing identical protection functionality.