LNK500GN-TL Equivalent & Substitute Parts

Part Overview

The LNK500GN-TL is an offline switch flyback converter IC manufactured by Power Integrations, part of the LinkSwitch® series. This device operates in isolated flyback topology with integrated power switching capability, designed for offline power supply applications. The LNK500GN-TL carries a product status of "Not For New Designs," indicating that while the part remains available in inventory, Power Integrations has designated it as legacy. For new design implementations or long-term production requirements, equivalent substitute parts within the same parametric family provide continuity of supply and design flexibility.

Substiute Parts

LNK500GN-TL

Power IntegrationsIn Stock: 30922LNK500GN-TL Datasheet

Current PartRFQ

LNK501GN-TL

Power IntegrationsIn Stock: 31188LNK501GN-TL Datasheet

Parametric EquivalentRFQ

LNK520GN-TL

Power IntegrationsIn Stock: 31297LNK520GN-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LNK500GN-TL is determined by strict parametric matching across the following critical criteria:

Topology & Electrical Characteristics: All substitute parts operate in isolated flyback topology with 700V breakdown voltage, 30kHz ~ 42kHz switching frequency, 5.5W power rating, and 77% duty cycle. These parameters define the functional equivalence class.

Protection & Control Features: All parts include identical fault protection mechanisms: current limiting, open loop control, over temperature protection, and short circuit protection.

Thermal & Environmental Specifications: Operating temperature range of -40°C ~ 150°C (TJ), RoHS compliance, and MSL 4 rating are consistent across all parts.

Package & Mounting: All parts use 8-SMD (7 Leads) Gull Wing package in SMD-8B supplier device package format with surface mount capability.

Regulatory & Compliance: All parts share identical REACH status (REACH Unaffected), ECCN (EAR99), and HTSUS (8542.39.0001) classifications.

The substitute parts differ only in base product number designation and packaging format (Tape & Reel versus Cut Tape), which do not affect electrical or mechanical compatibility in circuit design.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LNK500GN-TL, LNK501GN-TL, and LNK520GN-TL—are electrically and mechanically equivalent for circuit design purposes. Selection between them is determined by supply chain and procurement requirements rather than technical performance criteria.

For Tape & Reel packaging: Choose between LNK500GN-TL (30900 units available) or LNK520GN-TL (31200 units available). Both are supplied in Tape & Reel format suitable for automated assembly processes.

For Cut Tape packaging: LNK501GN-TL (31100 units available) is supplied in Cut Tape format, appropriate for lower-volume or manual assembly operations.

Product Status Consideration: All three parts carry "Not For New Designs" status. This designation reflects Power Integrations' product lifecycle management and does not indicate functional obsolescence. The parts remain fully supported for production use and are available in substantial inventory quantities.

Compliance & Regulatory: All parts maintain identical RoHS compliance, REACH status, and regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001), ensuring equivalent regulatory treatment across all three options.

Frequently Asked Questions (FAQ)

Q: Are LNK500GN-TL, LNK501GN-TL, and LNK520GN-TL electrically interchangeable in circuit design?

A: Yes. All three parts share identical electrical specifications including 700V breakdown voltage, 30kHz ~ 42kHz switching frequency, 5.5W power rating, 77% duty cycle, and identical fault protection features. They are direct functional equivalents.

Q: What is the difference between these three part numbers?

A: The differences are limited to packaging format and base product number designation. LNK500GN-TL and LNK520GN-TL are supplied in Tape & Reel format; LNK501GN-TL is supplied in Cut Tape format. These packaging differences do not affect electrical performance or mechanical compatibility.

Q: Can I substitute LNK501GN-TL (Cut Tape) for LNK500GN-TL (Tape & Reel) in production?

A: Electrical and mechanical substitution is valid. However, packaging format affects assembly process compatibility. Tape & Reel format is optimized for automated pick-and-place assembly, while Cut Tape format is suitable for manual or lower-volume assembly. Verify your assembly equipment compatibility before switching packaging formats.

Q: What does "Not For New Designs" status mean?

A: This status indicates that Power Integrations has designated these parts as legacy within their product portfolio. However, the parts remain in full production, are available in substantial inventory, and are fully supported for manufacturing use. The designation reflects product lifecycle management rather than functional obsolescence or supply discontinuation.

Q: Are all three parts RoHS compliant?

A: Yes. LNK500GN-TL, LNK501GN-TL, and LNK520GN-TL are all RoHS compliant with identical REACH status (REACH Unaffected) and regulatory classifications.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts have MSL 4 rating with a 72-hour floor life. This requires controlled storage conditions and proper handling during assembly to prevent moisture absorption.

Q: Can I use these parts in applications requiring -40°C to 150°C operating temperature?

A: Yes. All three parts are rated for -40°C ~ 150°C junction temperature (TJ) operation, making them suitable for industrial and automotive temperature range applications.