LNK6417K-TL Equivalent & Substitute Parts

Part Overview

The LNK6417K-TL is an offline switch flyback converter IC manufactured by Power Integrations, part of the LinkSwitch™-3 series. This device operates as an isolated power management IC with integrated switching functionality, designed for offline flyback topology applications with power output up to 9 W. The component is currently in active production status with full RoHS compliance and REACH unaffected certification.

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or application-specific performance needs within the same electrical and mechanical parameter envelope.

Substiute Parts

LNK6417K-TL

Power IntegrationsIn Stock: 15614LNK6417K-TL Datasheet

Current PartRFQ

LNK6407K-TL

Power IntegrationsIn Stock: 15882LNK6407K-TL Datasheet

Parametric EquivalentRFQ

LNK6428K-TL

Power IntegrationsIn Stock: 3348LNK6428K-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LNK6417K-TL are qualified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Identical topology (Flyback)
• Identical output isolation (Isolated)
• Identical voltage breakdown rating (725V)
• Identical switching frequency specification (Up to 85kHz)
• Identical duty cycle (55%)
• Identical operating temperature range (-40°C ~ 150°C TJ)
• Identical fault protection features (Current Limiting, Open Loop, Over Temperature, Short Circuit)

Mechanical Equivalence Criteria:

• Identical package type (12-BESOP with 11 Leads, Exposed Pad)
• Identical mounting type (Surface Mount)
• Identical physical dimensions (0.350", 8.89mm Width)

Compliance Equivalence Criteria:

• RoHS Compliant status
• Moisture Sensitivity Level 3 (168 Hours)
• REACH Unaffected status
• Active product status

The identified substitute parts LNK6407K-TL and LNK6428K-TL meet all mechanical, electrical, and compliance criteria. Power output variance (9 W vs. 10 W) represents the only parameter differentiation and does not disqualify substitution eligibility within the LinkSwitch™-3 series design envelope.

Parameter Comparison

Engineering Selection Recommendations

LNK6407K-TL Selection Criteria: The LNK6407K-TL is electrically and mechanically identical to the LNK6417K-TL with matching 9 W power output specification. This part maintains full parameter parity across all critical electrical characteristics, package dimensions, and compliance certifications. Current inventory availability is 15,800 pieces. Selection of LNK6407K-TL is appropriate for direct substitution in applications where the LNK6417K-TL is specified.

LNK6428K-TL Selection Criteria: The LNK6428K-TL operates within the same electrical and mechanical parameter envelope with a 10 W power output rating, representing a 1 W increase over the LNK6417K-TL baseline. All other electrical characteristics, package specifications, and compliance certifications remain identical. Current inventory availability is 3,300 pieces. Selection of LNK6428K-TL is appropriate for applications where increased power output capacity is acceptable within the design envelope.

Compliance and Status Verification: All three parts maintain Active product status with full RoHS compliance and REACH unaffected certification, confirming long-term availability and regulatory compliance for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can LNK6407K-TL be used as a direct replacement for LNK6417K-TL?

A: Yes. The LNK6407K-TL is electrically and mechanically equivalent to the LNK6417K-TL. Both parts share identical topology, voltage ratings, switching frequency, duty cycle, operating temperature range, package type, and fault protection features. Pin configuration and PCB layout compatibility are maintained.

Q: What is the difference between LNK6417K-TL and LNK6428K-TL?

A: The primary difference is power output specification: LNK6417K-TL is rated at 9 W while LNK6428K-TL is rated at 10 W. All other electrical parameters, including topology, voltage breakdown, switching frequency, duty cycle, and operating temperature range, are identical. Package type and mounting specifications are identical.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use the identical 12-BESOP package with 11 leads and exposed pad, maintaining the same physical dimensions (0.350", 8.89mm Width) and surface mount configuration. PCB footprints are interchangeable.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are RoHS Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 3 (168 Hours). All parts maintain Active product status with full manufacturing support.

Q: Which substitute part should be selected for maximum inventory availability?

A: LNK6407K-TL offers the highest current inventory at 15,800 pieces, matching the LNK6417K-TL inventory level of 15,600 pieces. LNK6428K-TL has lower availability at 3,300 pieces.

Q: Can LNK6428K-TL be used in applications designed for 9 W output?

A: LNK6428K-TL is rated for 10 W output and operates within the same electrical parameter envelope as the LNK6417K-TL. Applications designed for 9 W operation can accommodate the LNK6428K-TL, as the higher power rating does not create incompatibility. Application-specific thermal and circuit design considerations remain the responsibility of the design engineer.