LNK302G-TL Equivalent & Substitute Parts

Part Overview

The LNK302G-TL is an offline switch IC manufactured by Power Integrations, part of the LinkSwitch®-TN series. This device functions as a converter for offline buck, buck-boost, and flyback topologies operating at 66kHz with an 8-SMD package configuration. The LNK302G-TL is classified as obsolete product status. Due to its obsolescence, equivalent and parametrically compatible substitute parts from the active LinkSwitch®-TN product line are available to maintain design continuity and ensure supply chain reliability for applications requiring offline power conversion with integrated switching functionality.

Substiute Parts

LNK302G-TL

Power IntegrationsIn Stock: 914LNK302G-TL Datasheet

Current PartRFQ

LNK302GN-TL

Power IntegrationsIn Stock: 17316LNK302GN-TL Datasheet

DirectRFQ

LNK304GN-TL

Power IntegrationsIn Stock: 55189LNK304GN-TL Datasheet

Parametric EquivalentRFQ

LNK305GN-TL

Power IntegrationsIn Stock: 30857LNK305GN-TL Datasheet

Parametric EquivalentRFQ

LNK306GN-TL

Power IntegrationsIn Stock: 18298LNK306GN-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LNK302G-TL are selected based on strict electrical and mechanical parameter equivalence within the LinkSwitch®-TN series. The substitution criteria are:

Critical Matching Parameters:

• Topology: Buck, Buck-Boost, Flyback
• Voltage - Breakdown: 700V
• Frequency - Switching: 66kHz
• Duty Cycle: 69%
• Output Isolation: Non-Isolated
• Internal Switch(s): Yes
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit
• Operating Temperature: -40°C ~ 150°C (TJ)
• Package / Case: 8-SMD (7 Leads), Gull Wing
• Supplier Device Package: SMD-8B
• Mounting Type: Surface Mount

All substitute parts listed maintain identical electrical specifications and mechanical packaging. The primary distinction between the main part and substitutes is product status (obsolete versus active) and compliance certifications. Substitute parts are drawn from active product lines with current manufacturing and supply availability.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute - LNK302GN-TL: The LNK302GN-TL is the direct successor to the LNK302G-TL within the LinkSwitch®-TN series. This part maintains identical electrical and mechanical specifications while transitioning to active product status. The LNK302GN-TL is RoHS compliant and represents the primary replacement for obsolete LNK302G-TL applications. Moisture sensitivity level increases from MSL 1 to MSL 4, requiring standard handling procedures during storage and assembly.

Parametric Equivalents - LNK304GN-TL, LNK305GN-TL, LNK306GN-TL: These parts are parametrically equivalent to the LNK302G-TL across all critical electrical and mechanical parameters. All three maintain the same 700V breakdown voltage, 66kHz switching frequency, 69% duty cycle, and 8-SMD package configuration. These parts are active products with RoHS compliance and standard MSL 4 moisture sensitivity. Selection among these parametric equivalents depends on application-specific requirements not defined by the provided parameters.

Compliance Considerations: All substitute parts are RoHS compliant, addressing regulatory requirements that may not have been applicable to the original LNK302G-TL. REACH status remains unaffected across all parts. Export classification (ECCN EAR99) and tariff codes (HTSUS 8542.39.0001) are consistent across the entire product family.

Frequently Asked Questions (FAQ)

Q: Can LNK302GN-TL directly replace LNK302G-TL in existing designs?

A: Yes. The LNK302GN-TL maintains identical electrical specifications (700V breakdown, 66kHz switching, 69% duty cycle) and mechanical packaging (8-SMD, Gull Wing). The primary differences are product status (active versus obsolete) and RoHS compliance. Standard moisture handling procedures apply due to MSL 4 rating.

Q: What is the difference between LNK302GN-TL and the parametric equivalents (LNK304GN-TL, LNK305GN-TL, LNK306GN-TL)?

A: All four parts are electrically and mechanically equivalent based on the provided parameters. They share identical topology, voltage ratings, switching frequency, duty cycle, fault protection features, operating temperature range, and package configuration. The base product numbers differ (302, 304, 305, 306), but this distinction is not defined by the provided parameter set.

Q: Are there any compatibility issues with the 8-SMD package?

A: No. All substitute parts use the identical 8-SMD (7 Leads), Gull Wing package with SMD-8B supplier device package designation. PCB footprints and assembly processes remain unchanged.

Q: What is the impact of the MSL rating change from 1 to 4?

A: MSL 1 (Unlimited) allows indefinite storage without moisture absorption concerns. MSL 4 (72 Hours) requires that components be used within 72 hours of package opening under controlled humidity conditions. Standard moisture-controlled storage and handling procedures apply to all substitute parts.

Q: Are all substitute parts RoHS compliant?

A: Yes. LNK302GN-TL, LNK304GN-TL, LNK305GN-TL, and LNK306GN-TL are all RoHS compliant. The original LNK302G-TL is RoHS non-compliant. This compliance upgrade may be required for new designs or regulatory updates.

Q: Can these parts be used in buck, buck-boost, and flyback topologies?

A: Yes. All parts support buck, buck-boost, and flyback converter topologies with non-isolated output configuration and integrated internal switching functionality.

Q: What fault protection features are included?

A: All parts include current limiting, open loop, over temperature, and short circuit protection mechanisms.