LNK613DG-TL Equivalent & Substitute Parts

Part Overview

The LNK613DG-TL is an offline switch flyback converter IC manufactured by Power Integrations, part of the LinkSwitch®-II series. This isolated power management IC operates at switching frequencies up to 85 kHz and delivers 3.3 W output power in an 8-SOIC package. The device is Active status and RoHS compliant, designed for offline flyback topology applications requiring integrated current limiting, open loop control, over-temperature protection, and short-circuit fault protection.

Substitute parts are identified when design requirements change, inventory constraints occur, or higher power output specifications become necessary while maintaining electrical and mechanical compatibility within the LinkSwitch®-II product family.

Substiute Parts

LNK613DG-TL

Power IntegrationsIn Stock: 31121LNK613DG-TL Datasheet

Current PartRFQ

LNK603DG-TL

Power IntegrationsIn Stock: 25330LNK603DG-TL Datasheet

Parametric EquivalentRFQ

LNK604DG-TL

Power IntegrationsIn Stock: 55235LNK604DG-TL Datasheet

Parametric EquivalentRFQ

LNK605DG-TL

Power IntegrationsIn Stock: 40470LNK605DG-TL Datasheet

Parametric EquivalentRFQ

LNK606DG-TL

Power IntegrationsIn Stock: 40834LNK606DG-TL Datasheet

Parametric EquivalentRFQ

LNK614DG-TL

Power IntegrationsIn Stock: 5670LNK614DG-TL Datasheet

Parametric EquivalentRFQ

LNK615DG-TL

Power IntegrationsIn Stock: 23855LNK615DG-TL Datasheet

Parametric EquivalentRFQ

LNK616DG-TL

Power IntegrationsIn Stock: 67804LNK616DG-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LNK613DG-TL are selected from the LinkSwitch®-II family based on strict electrical and mechanical parameter matching. All substitute parts share identical specifications in the following critical areas:

Mandatory Matching Parameters:

• Manufacturer: Power Integrations
• Series: LinkSwitch®-II
• Topology: Flyback
• Output Isolation: Isolated
• Voltage - Breakdown: 700V
• Frequency - Switching: Up to 85 kHz
• Duty Cycle: 55%
• Package / Case: 8-SOIC (0.154", 3.90mm Width), 7 Leads
• Supplier Device Package: SO-8C
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 150°C (TJ)
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Variable Parameter (Substitution Basis):

• Power (Watts): Ranges from 3.3 W to 6.1 W across the family

Substitution is valid when the alternative part's power rating meets or exceeds the application requirement. Packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) does not affect electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are Active status products from Power Integrations, ensuring continued manufacturer support and availability. Each part carries RoHS compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer applications.

Selection Criteria:

1. Equal Power Rating (3.3 W): LNK603DG-TL provides identical electrical performance with alternative packaging (Tape & Reel format).

2. Higher Power Rating Required: LNK604DG-TL and LNK614DG-TL (4.1 W), LNK605DG-TL and LNK615DG-TL (5.1 W), or LNK606DG-TL and LNK616DG-TL (6.1 W) are direct substitutes when application power demands exceed 3.3 W. All maintain identical electrical characteristics and package footprint.

3. Packaging Preference: Cut Tape & Digi-Reel® format is available for LNK613DG-TL, LNK604DG-TL, LNK605DG-TL, and LNK615DG-TL. Tape & Reel format is available for LNK603DG-TL, LNK606DG-TL, LNK614DG-TL, and LNK616DG-TL.

4. Inventory Availability: LNK616DG-TL offers highest stock (67700 pcs), followed by LNK604DG-TL (55200 pcs) and LNK606DG-TL (40800 pcs).

Frequently Asked Questions (FAQ)

Q: Can LNK604DG-TL replace LNK613DG-TL in an existing design?

A: Yes. LNK604DG-TL is a direct substitute with identical electrical and mechanical specifications. The higher power rating (4.1 W versus 3.3 W) does not affect compatibility; the device operates within the same topology, frequency, voltage, and temperature parameters. PCB footprint and pinout are identical.

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

A: Both packaging formats contain the same IC in SO-8C package. Cut Tape & Digi-Reel® is supplied on cut tape with reel compatibility. Tape & Reel is supplied on continuous reel. Electrical performance and component specifications are identical; packaging choice depends on assembly equipment and procurement requirements.

Q: Are all substitute parts from the same manufacturer?

A: Yes. All substitute parts are manufactured by Power Integrations and belong to the LinkSwitch®-II series, ensuring consistent quality, reliability, and technical support.

Q: Can a lower power-rated part substitute for a higher power requirement?

A: No. Substitution is valid only when the alternative part's power rating meets or exceeds the application requirement. Using a lower-rated device may result in thermal stress and reduced reliability.

Q: Do all parts share the same fault protection features?

A: Yes. All parts in this comparison include identical fault protection: current limiting, open loop control, over-temperature protection, and short-circuit protection.

Q: What is the operating temperature range for all substitute parts?

A: All parts operate from -40°C to 150°C junction temperature (TJ), providing identical thermal performance across the entire LinkSwitch®-II family.

Q: Are there any compliance differences between substitute parts?

A: No. All parts are RoHS compliant, REACH unaffected, and carry identical MSL rating of 1 (Unlimited), ensuring equivalent regulatory and environmental compliance.