DPA426SN-TL Equivalent & Substitute Parts

Part Overview

The DPA426SN-TL is a DPA-Switch® Converter IC designed for Power Over Ethernet and Telecom Applications. This single-output voltage regulator operates across an input voltage range of 16V to 75V and delivers a 220V output. The device is packaged in S-PAK surface mount configuration and is rated for operating temperatures from -40°C to 125°C.

The DPA426SN-TL has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this converter topology.

Substiute Parts

DPA426SN-TL

Power IntegrationsIn Stock: 4367DPA426SN-TL Datasheet

Current PartRFQ

DPA426R-TL

Power IntegrationsIn Stock: 2645DPA426R-TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DPA426SN-TL are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Electrical Compatibility Criteria:

• Identical base product number (DPA426)
• Same DPA-Switch® series topology
• Matching input voltage range (16V ~ 75V)
• Identical output voltage specification (220V)
• Single output configuration
• Equivalent operating temperature range (-40°C ~ 125°C)

Mechanical Compatibility Criteria:

• Surface mount mounting type
• Equivalent moisture sensitivity level (MSL 4)
• Compatible supplier device package classification

The DPA426R-TL qualifies as a direct substitute based on these parameters. While the package form factor differs (TO-263-7C versus S-PAK), both are surface mount packages suitable for the same application class. The electrical specifications remain identical across input/output voltage, temperature range, and functional topology.

Parameter Comparison

Engineering Selection Recommendations

DPA426R-TL as Primary Substitute:

The DPA426R-TL is the qualified substitute for the obsolete DPA426SN-TL. Selection of this part is based on the following engineering factors:

Product Status Advantage: The DPA426R-TL maintains active product status with Power Integrations, ensuring continued availability, technical support, and manufacturing continuity. The DPA426SN-TL has reached obsolete status, making long-term supply procurement impractical.

Electrical Equivalence: Both parts share identical electrical specifications across all critical parameters: input voltage range (16V ~ 75V), output voltage (220V), single output topology, and operating temperature range (-40°C ~ 125°C). This ensures functional interchangeability within Power Over Ethernet and Telecom Applications.

Compliance and Certification: Both parts maintain equivalent REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring regulatory compliance consistency. Moisture sensitivity levels are identical (MSL 4, 72 Hours), supporting equivalent handling and storage requirements.

Package Consideration: The DPA426R-TL uses TO-263-7C packaging while the DPA426SN-TL uses S-PAK. Both are surface mount packages. PCB layout modifications may be required to accommodate the different package footprints. The TO-263-7C package includes a thermal tab, which may provide improved thermal performance in applications requiring enhanced heat dissipation.

Inventory and Supply: The DPA426R-TL has 2,579 units in current stock with active product status, supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the DPA426R-TL directly replace the DPA426SN-TL without design modifications?

A: The DPA426R-TL is electrically equivalent to the DPA426SN-TL across all specified parameters. However, the package form factor differs (TO-263-7C versus S-PAK). PCB layout modifications are required to accommodate the different package footprints and pin configurations. Thermal design considerations may also differ due to the thermal tab present in the TO-263-7C package.

Q: What is the significance of the product status difference between these parts?

A: The DPA426SN-TL is classified as obsolete, indicating that Power Integrations has discontinued manufacturing and support for this part number. The DPA426R-TL maintains active product status, ensuring ongoing availability, technical documentation updates, and manufacturing support. For new designs or production continuity, the active substitute is the appropriate selection.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99). Moisture sensitivity levels are equivalent (MSL 4, 72 Hours). No regulatory or compliance barriers exist to substitution.

Q: What are the thermal characteristics of the TO-263-7C package compared to S-PAK?

A: The TO-263-7C package includes a thermal tab (D2PAK configuration with 6 leads plus tab), which is designed to enhance thermal dissipation. The S-PAK package does not include this feature. Applications requiring thermal management should evaluate whether the improved thermal characteristics of the TO-263-7C package provide design benefits or require thermal design adjustments.

Q: Is the DPA426R-TL the only available substitute for the DPA426SN-TL?

A: Based on the provided substitute list, the DPA426R-TL is the identified equivalent part. Both parts share the DPA426 base product number and DPA-Switch® series designation, with identical electrical specifications for Power Over Ethernet and Telecom Applications.