DPA424SN Equivalent & Substitute Parts

Part Overview

The DPA424SN 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 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 DPA424SN 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

DPA424SN

Power IntegrationsIn Stock: 17259DPA424SN Datasheet

Current PartRFQ

DPA424R-TL

Power IntegrationsIn Stock: 4068DPA424R-TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DPA424SN are identified based on strict electrical and mechanical compatibility criteria. The following parameters must remain constant across all substitute candidates:

Mandatory Matching Parameters:

• Base Product Number: DPA424
• Series: DPA-Switch®
• Manufacturer: Power Integrations
• Input Voltage Range: 16V ~ 75V
• Output Voltage: 220V
• Number of Outputs: 1
• Operating Temperature Range: -40°C ~ 125°C
• Mounting Type: Surface Mount
• MSL Rating: 4 (72 Hours)

Allowable Variations:

• Supplier Device Package (different physical package configurations)
• Product Status (active alternatives to obsolete parts)
• Packaging Format (Cut Tape, Digi-Reel®, or alternative distribution methods)

The DPA424R-TL qualifies as a direct substitute because it maintains all mandatory electrical parameters while offering an alternative package configuration (TO-263-7C instead of S-PAK) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The DPA424R-TL is the qualified substitute for the obsolete DPA424SN. Both devices share identical electrical specifications, input/output voltage characteristics, and thermal operating ranges. The primary distinction is the physical package configuration: DPA424R-TL uses TO-263-7C (D2PAK with 6 leads plus tab) instead of S-PAK.

Product Status Consideration: The DPA424R-TL maintains active product status with Power Integrations, ensuring ongoing availability and manufacturing support. The DPA424SN's obsolete status creates supply chain risk and limits access to new inventory.

Compliance Status: The DPA424R-TL is RoHS non-compliant, whereas the DPA424SN's RoHS status is not specified in the provided data. Both devices share identical REACH Unaffected and EAR99 ECCN classifications.

Inventory Availability: DPA424R-TL has 4055 units in stock. DPA424SN has 17199 units in stock, but as an obsolete part, this inventory represents a finite, non-replenishable supply.

Selection of DPA424R-TL requires PCB layout modification to accommodate the TO-263-7C package footprint. Pin configuration and electrical function remain equivalent to the S-PAK variant.

Frequently Asked Questions (FAQ)

Q: Can DPA424R-TL directly replace DPA424SN without circuit modification?

A: Electrical function and performance are identical. However, the package change from S-PAK to TO-263-7C requires PCB footprint redesign. Pin assignments and electrical connections must be verified against the respective datasheets before implementation.

Q: What is the primary reason for substituting DPA424SN with DPA424R-TL?

A: DPA424SN is obsolete. DPA424R-TL is an active product from the same manufacturer, same base product line (DPA424), and identical DPA-Switch® series with matching electrical specifications. This substitution ensures long-term supply chain continuity.

Q: Are there differences in thermal performance between S-PAK and TO-263-7C packages?

A: Both packages are surface mount configurations rated for -40°C to 125°C operating temperature. Package thermal characteristics are not provided in the specification data. Thermal performance analysis requires detailed package datasheets and thermal modeling specific to the application circuit.

Q: What does the MSL 4 (72 Hours) rating mean for both parts?

A: Both DPA424SN and DPA424R-TL have Moisture Sensitivity Level 4, indicating a maximum floor life of 72 hours after bag opening under specified humidity conditions. Proper moisture control during storage and handling is required for both variants.

Q: Is DPA424R-TL RoHS compliant?

A: No. DPA424R-TL is RoHS non-compliant. If RoHS compliance is a design requirement, this substitution may not be suitable. Verify compliance requirements against your application specifications.

Q: Can I use DPA424SN inventory for new designs?

A: DPA424SN is obsolete and inventory is finite. New designs should use DPA424R-TL to ensure long-term supportability and avoid future supply constraints.