LNK6416D-TL Equivalent & Substitute Parts

Part Overview

The LNK6416D-TL is an offline switch flyback converter IC manufactured by Power Integrations, part of the LinkSwitch™-3 series. This isolated power management IC operates at switching frequencies up to 85kHz and delivers 6.1W output power in an 8-SOIC surface mount package. The device is Active status and RoHS compliant, designed for offline flyback topology applications requiring integrated current limiting, open loop, over temperature, and short circuit protection.

Substitute parts are identified when design requirements permit alternative models within the LinkSwitch family that maintain electrical and mechanical compatibility while offering different power ratings or series variants.

Substiute Parts

LNK6416D-TL

Power IntegrationsIn Stock: 1127LNK6416D-TL Datasheet

Current PartRFQ

LNK606DG-TL

Power IntegrationsIn Stock: 40834LNK606DG-TL Datasheet

Parametric EquivalentRFQ

LNK616DG-TL

Power IntegrationsIn Stock: 67804LNK616DG-TL Datasheet

Parametric EquivalentRFQ

LNK6404D-TL

Power IntegrationsIn Stock: 1825LNK6404D-TL Datasheet

Parametric EquivalentRFQ

LNK6406D-TL

Power IntegrationsIn Stock: 3192LNK6406D-TL Datasheet

Parametric EquivalentRFQ

LNK6407D-TL

Power IntegrationsIn Stock: 15740LNK6407D-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LNK6416D-TL are identified based on the following criteria:

Electrical Compatibility Parameters:

• Topology: Flyback
• Output Isolation: Isolated
• Switching Frequency: Up to 85kHz
• Duty Cycle: 55%
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit
• Operating Temperature Range: -40°C ~ 150°C (TJ)

Mechanical Compatibility Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width), 7 Leads
• Supplier Device Package: SO-8C
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Voltage - Breakdown: 700V to 725V (within acceptable range for offline switch applications)
• Power (Watts): 4.1W to 7.5W (power rating variation permitted based on application requirements)
• Series: LinkSwitch™-3 or LinkSwitch®-II (both series maintain functional compatibility)

Substitute parts maintain identical package, mounting, isolation, topology, switching frequency, duty cycle, fault protection, and operating temperature specifications. Variations in breakdown voltage (700V vs 725V) and power rating (4.1W to 7.5W) are permitted within the LinkSwitch family architecture.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Identical Power Rating - 6.1W):

LNK6406D-TL and LNK6416D-TL are functionally equivalent within the LinkSwitch™-3 series, both delivering 6.1W at 725V breakdown voltage. Selection between these parts depends on application-specific design validation and inventory availability.

LNK616DG-TL and LNK606DG-TL are LinkSwitch®-II series alternatives with identical 6.1W power rating and 85kHz switching frequency. These parts operate at 700V breakdown voltage, which is acceptable for offline switch applications. Higher inventory availability (67700 and 40800 units respectively) supports supply chain continuity.

Higher Power Alternative (7.5W):

LNK6407D-TL provides increased power capacity at 7.5W while maintaining 725V breakdown voltage, 85kHz switching frequency, and identical package specifications. This part is suitable for applications requiring higher power delivery within the same thermal and mechanical envelope. Inventory availability is 15700 units.

Lower Power Alternative (4.1W):

LNK6404D-TL operates at 4.1W power rating with 725V breakdown voltage and identical package specifications. This part is suitable for reduced power applications where the 6.1W rating exceeds design requirements.

Compliance Status:

All substitute parts maintain Active product status, RoHS compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. All parts are surface mount, 8-SOIC SO-8C package variants suitable for automated assembly.

Frequently Asked Questions (FAQ)

Q: Can LNK6416D-TL be replaced with LNK6407D-TL?

A: Yes. Both parts share identical package (8-SOIC SO-8C), mounting type (surface mount), switching frequency (85kHz), duty cycle (55%), operating temperature range (-40°C to 150°C), and fault protection features. LNK6407D-TL delivers 7.5W versus 6.1W for LNK6416D-TL. Selection depends on whether the application power budget permits the higher rating.

Q: What is the difference between LinkSwitch™-3 and LinkSwitch®-II series?

A: Both series maintain identical topology (flyback), isolation (isolated), switching frequency (85kHz), duty cycle (55%), package (8-SOIC SO-8C), and operating temperature range (-40°C to 150°C). The primary difference is breakdown voltage: LinkSwitch™-3 operates at 725V while LinkSwitch®-II operates at 700V. Both voltage ratings are acceptable for offline switch applications.

Q: Are LNK616DG-TL and LNK606DG-TL interchangeable?

A: Yes. Both are LinkSwitch®-II series parts with identical 6.1W power rating, 700V breakdown voltage, 85kHz switching frequency, 55% duty cycle, and 8-SOIC SO-8C package. Selection between these parts depends on application validation and inventory availability (LNK616DG-TL: 67700 units; LNK606DG-TL: 40800 units).

Q: Can I use a lower power part (LNK6404D-TL at 4.1W) in place of LNK6416D-TL (6.1W)?

A: Substitution is not recommended. LNK6404D-TL is rated for 4.1W output power, which is insufficient for applications designed for 6.1W. Using an undersized power IC may result in thermal stress, reduced efficiency, or circuit malfunction.

Q: Can I use a higher power part (LNK6407D-TL at 7.5W) in place of LNK6416D-TL (6.1W)?

A: Yes. LNK6407D-TL is rated for 7.5W output power and maintains all other electrical and mechanical specifications identical to LNK6416D-TL. The higher power rating provides design margin and is compatible with applications designed for 6.1W operation.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (LNK6407D-TL, LNK6406D-TL, LNK6404D-TL, LNK616DG-TL, LNK606DG-TL) are RoHS compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What package specifications must remain constant for substitution?

A: The package must remain 8-SOIC (0.154", 3.90mm Width), 7 Leads with SO-8C supplier device package designation and surface mount mounting type. All listed substitute parts maintain these specifications for direct PCB compatibility.