LNK563DN Equivalent & Substitute Parts

Part Overview

The LNK563DN is an offline switch flyback converter IC manufactured by Power Integrations, designed for isolated power supply applications using flyback topology. This device integrates an internal switch with comprehensive fault protection including current limiting, open loop protection, over-temperature shutdown, and short-circuit detection. The LNK563DN operates at 83 kHz switching frequency with a 70% duty cycle and delivers 2.5 W output power.

The LNK563DN has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and new design implementations.

Substiute Parts

LNK563DN

Power IntegrationsIn Stock: 768LNK563DN Datasheet

Current PartRFQ

LNK563DN-TL

Power IntegrationsIn Stock: 30272LNK563DN-TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LNK563DN is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 700V rating
• Frequency - Switching: 83 kHz operation
• Duty Cycle: 70%
• Power Output: 2.5 W
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit
• Internal Switch(s): Yes

Mechanical & Packaging Equivalence Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width), 7 Leads
• Supplier Device Package: SO-8C
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 150°C (TJ)

Compliance & Regulatory Equivalence:

• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN: EAR99

The LNK563DN-TL qualifies as a direct substitute based on identical electrical specifications, mechanical packaging, and regulatory compliance. The primary distinction is packaging format and product availability status.

Parameter Comparison

Engineering Selection Recommendations

The LNK563DN-TL is a direct electrical and mechanical equivalent to the LNK563DN. Both devices share identical electrical specifications, package geometry, and regulatory compliance certifications. Selection between these parts is determined by availability and packaging requirements:

LNK563DN-TL Selection Criteria:

• Active product status ensures long-term availability and continued manufacturer support
• Significantly higher inventory levels (30,200 units) provide supply chain reliability
• Tape & Reel packaging format supports automated assembly processes and high-volume production
• Identical electrical performance and thermal characteristics maintain design compatibility
• RoHS compliance and REACH unaffected status satisfy regulatory requirements for both consumer and industrial applications

The LNK563DN-TL is the recommended substitute for new designs, production continuity, and component replenishment due to active product status and superior inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the LNK563DN-TL be used as a direct replacement for the LNK563DN in existing designs?

A: Yes. The LNK563DN-TL is electrically and mechanically identical to the LNK563DN. Both devices feature the same 700V breakdown voltage, 83 kHz switching frequency, 70% duty cycle, 2.5 W power output, and 8-SOIC SO-8C package. Pin configuration, thermal characteristics, and fault protection mechanisms are identical. No circuit modifications are required.

Q: What is the difference between LNK563DN and LNK563DN-TL?

A: The primary differences are packaging format and product status. The LNK563DN is supplied in standard packaging and is discontinued at DiGi Electronics. The LNK563DN-TL is supplied in Tape & Reel (TR) format and maintains active product status with significantly higher inventory availability (30,200 units versus 756 units).

Q: Is the Tape & Reel packaging compatible with my assembly process?

A: Tape & Reel packaging is the standard format for automated surface mount assembly. If your manufacturing process uses pick-and-place equipment, Tape & Reel packaging is compatible and preferred. If manual assembly or non-standard processes are used, verify compatibility with your assembly equipment specifications.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both devices operate across the identical temperature range (-40°C ~ 150°C junction temperature) and share identical fault protection mechanisms including current limiting, open loop protection, over-temperature shutdown, and short-circuit detection. Reliability and thermal performance are equivalent.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the LNK563DN and LNK563DN-TL are RoHS Compliant, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both devices. Regulatory compliance is identical.

Q: Why is the LNK563DN-TL recommended over the LNK563DN?

A: The LNK563DN-TL is recommended due to active product status and superior inventory availability. The LNK563DN is discontinued at DiGi Electronics, which creates supply chain risk. The LNK563DN-TL provides design continuity, long-term availability, and reliable component sourcing for production and future applications.