LNK306G-TL Equivalent & Substitute Parts

Part Overview

The LNK306G-TL is an offline switch IC from Power Integrations' LinkSwitch®-TN series, designed for non-isolated power conversion applications utilizing Buck, Buck-Boost, and Flyback topologies. This component operates at 66kHz switching frequency with integrated current limiting, open loop, over-temperature, and short-circuit fault protection.

The LNK306G-TL carries an Obsolete product status. Equivalent substitute parts are available from the same manufacturer series to support ongoing design requirements and production continuity.

Substiute Parts

LNK306G-TL

Power IntegrationsIn Stock: 1178LNK306G-TL Datasheet

Current PartRFQ

LNK306GN-TL

Power IntegrationsIn Stock: 18298LNK306GN-TL Datasheet

DirectRFQ

LNK302GN-TL

Power IntegrationsIn Stock: 17316LNK302GN-TL Datasheet

Parametric EquivalentRFQ

LNK304GN-TL

Power IntegrationsIn Stock: 55189LNK304GN-TL Datasheet

Parametric EquivalentRFQ

LNK305GN-TL

Power IntegrationsIn Stock: 30857LNK305GN-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LNK306G-TL is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

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

All substitute parts listed below meet these electrical and mechanical specifications. Differences in product status, packaging format (Tape & Reel vs. Cut Tape), RoHS compliance, and Moisture Sensitivity Level do not affect functional equivalence in the specified application.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Priority): LNK306GN-TL is the direct successor to LNK306G-TL. Both parts share identical electrical specifications and package configuration. LNK306GN-TL carries Active product status and RoHS Compliant certification, making it the preferred choice for new designs and production continuity. Inventory availability is 18,198 units.

Parametric Equivalents (Alternative Selection): LNK302GN-TL, LNK304GN-TL, and LNK305GN-TL are parametric equivalents meeting all critical electrical and mechanical requirements. These parts are Active status products with RoHS Compliance. Selection among these alternatives should be based on:

• Inventory availability (LNK304GN-TL: 55,100 units; LNK305GN-TL: 30,786 units; LNK302GN-TL: 17,300 units)
• Supply chain lead times
• Design-specific power output requirements within the LinkSwitch®-TN series capability range

All substitute parts maintain compliance with REACH regulations and carry EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can LNK306GN-TL directly replace LNK306G-TL without circuit modification?

A: Yes. LNK306GN-TL is electrically and mechanically identical to LNK306G-TL. Both operate at 700V breakdown voltage, 66kHz switching frequency, and 69% duty cycle in Buck, Buck-Boost, and Flyback topologies. Pin configuration and package footprint (8-SMD, Gull Wing) are identical. No circuit redesign is required.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides the same components in smaller quantities on cut tape segments. Both formats contain identical components with identical electrical specifications. Selection depends on production volume and assembly equipment compatibility.

Q: Are LNK302GN-TL, LNK304GN-TL, and LNK305GN-TL interchangeable with LNK306G-TL?

A: These parts are parametric equivalents sharing identical electrical specifications (700V breakdown, 66kHz switching, 69% duty cycle, -40°C to 150°C operating range) and mechanical package (8-SMD, Gull Wing). They are functionally interchangeable in applications designed for the LinkSwitch®-TN series. Differences in base product numbers reflect internal design variations within the series that do not affect performance in equivalent topologies.

Q: Why is LNK306G-TL marked as Obsolete?

A: LNK306G-TL has reached end-of-life status. LNK306GN-TL is the active production equivalent. Existing inventory of LNK306G-TL (1,112 units) remains available, but new designs should specify LNK306GN-TL or alternative active-status parts from the LinkSwitch®-TN series.

Q: What is the Moisture Sensitivity Level difference between LNK306G-TL and substitute parts?

A: LNK306G-TL carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Substitute parts carry MSL 4 (72 Hours), requiring storage in controlled humidity environments and baking before reflow soldering if exposed to ambient humidity. This difference affects component handling and storage procedures but not electrical performance.

Q: Are all substitute parts RoHS Compliant?

A: LNK306GN-TL, LNK302GN-TL, LNK304GN-TL, and LNK305GN-TL are all RoHS Compliant. The original LNK306G-TL is RoHS Non-Compliant. For applications requiring RoHS compliance, substitute parts must be selected.