LNK4023S-TL Equivalent & Substitute Parts

Part Overview

The LNK4023S-TL is an offline flyback converter IC manufactured by Power Integrations, part of the LinkSwitch™-4 series. This device operates at 65kHz switching frequency and delivers 8W of power in isolated applications. The component is housed in a SOT-23-6 surface mount package and is currently in active production status with full RoHS compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement without circuit redesign. The LNK4023S-TL may require alternatives due to inventory availability, supply chain constraints, or application-specific power requirements within the same product family.

Substiute Parts

LNK4023S-TL

Power IntegrationsIn Stock: 1879LNK4023S-TL Datasheet

Current PartRFQ

LNK4022S-TL

Power IntegrationsIn Stock: 30873LNK4022S-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LNK4023S-TL is determined by the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Power Integrations
• Series: LinkSwitch™-4
• Package: SOT-23-6
• Topology: Flyback
• Output Isolation: Isolated
• Switching Frequency: 65kHz
• Supply Voltage Range: 5V ~ 16.5V
• Operating Temperature Range: -25°C ~ 125°C
• Fault Protection: Over Temperature, Over Voltage, Short Circuit
• Mounting Type: Surface Mount

Variable Parameter:

• Power Rating (Watts): May differ within the same series

The LNK4022S-TL qualifies as a parametric equivalent because it maintains all mandatory matching parameters. The power rating difference (6.5W vs 8W) reflects a lower output capacity variant within the same integrated circuit family, suitable for applications requiring reduced power delivery.

Parameter Comparison

Engineering Selection Recommendations

Both the LNK4023S-TL and LNK4022S-TL are active production components with identical compliance certifications (RoHS Compliant, REACH Unaffected, ECCN EAR99). Selection between these parts depends on application power requirements:

LNK4023S-TL Selection Criteria:

• Applications requiring 8W output power delivery
• Current inventory: 1838 Pcs

LNK4022S-TL Selection Criteria:

• Applications requiring 6.5W output power delivery
• Current inventory: 30810 Pcs

Both devices share identical electrical characteristics for supply voltage, switching frequency, operating temperature range, and protection features. The SOT-23-6 package footprint is identical, enabling direct PCB layout compatibility. Selection should be based on the maximum power requirement of the end application.

Frequently Asked Questions (FAQ)

Q: Can LNK4022S-TL replace LNK4023S-TL in all applications?

A: The LNK4022S-TL can replace the LNK4023S-TL only in applications where the maximum required output power does not exceed 6.5W. Both devices operate at identical switching frequency, supply voltage range, and temperature specifications. If the application requires 8W output power, the LNK4023S-TL is the appropriate selection.

Q: Are the package footprints identical?

A: Yes. Both the LNK4023S-TL and LNK4022S-TL use the SOT-23-6 package with identical pin configuration and PCB footprint. No layout modifications are required for physical substitution.

Q: What are the key differences between these parts?

A: The primary difference is the maximum power rating: LNK4023S-TL delivers 8W while LNK4022S-TL delivers 6.5W. All other electrical parameters, including topology, isolation, switching frequency, supply voltage range, operating temperature, and fault protection features, are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the LNK4023S-TL and LNK4022S-TL are RoHS Compliant with MSL Rating 1 (Unlimited moisture sensitivity level).

Q: Which part has better availability?

A: The LNK4022S-TL has significantly higher current inventory (30810 Pcs) compared to the LNK4023S-TL (1838 Pcs). If power requirements permit, the LNK4022S-TL may offer supply chain advantages.