DPA425SN Equivalent & Substitute Parts

Part Overview

The DPA425SN 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 DPA425SN 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

DPA425SN

Power IntegrationsIn Stock: 17346DPA425SN Datasheet

Current PartRFQ

DPA425R-TL

Power IntegrationsIn Stock: 16274DPA425R-TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DPA425SN are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Electrical Compatibility Parameters:

• Manufacturer: Power Integrations (same manufacturer ensures design consistency)
• Base Product Number: DPA425 (same core device family)
• Series: DPA-Switch® (same converter architecture)
• Input Voltage Range: 16V ~ 75V (identical specification)
• Output Voltage: 220V (identical specification)
• Number of Outputs: 1 (identical configuration)
• Operating Temperature Range: -40°C ~ 125°C (identical specification)
• Application: Converter, Power Over Ethernet and Telecom Applications (identical use case)

Mechanical Compatibility Parameters:

• Mounting Type: Surface Mount (identical mounting method)
• Moisture Sensitivity Level: 4 (72 Hours) (identical MSL rating)

Regulatory Compliance Parameters:

• REACH Status: REACH Unaffected (identical regulatory status)
• ECCN: EAR99 (identical export classification)
• HTSUS Code: 8542.39.0001 (identical tariff classification)

The primary difference between the main part and substitute lies in the package configuration and product status. The DPA425SN uses S-PAK packaging and is obsolete, while the DPA425R-TL uses TO-263-7C packaging and maintains active product status.

Parameter Comparison

Engineering Selection Recommendations

DPA425R-TL as Primary Substitute:

The DPA425R-TL is the direct functional equivalent to the DPA425SN. Both devices share identical electrical specifications, including input voltage range (16V ~ 75V), output voltage (220V), single output configuration, and operating temperature range (-40°C ~ 125°C). Both are manufactured by Power Integrations within the DPA-Switch® series and serve identical Power Over Ethernet and Telecom Applications.

Product Status Consideration:

The DPA425SN is classified as obsolete, while the DPA425R-TL maintains active product status. This distinction is significant for long-term supply chain planning. Active product status indicates ongoing manufacturing support, availability of technical documentation, and continued compliance with current regulatory requirements.

Package Configuration:

The primary physical difference is the package type. The DPA425SN uses S-PAK packaging, while the DPA425R-TL uses TO-263-7C packaging (also designated as D2PAK with 6 Leads + Tab). This package difference requires PCB layout modification and may affect thermal management characteristics. PCB redesign is necessary to accommodate the different pin configuration and footprint.

Regulatory and Compliance Status:

Both parts maintain identical REACH Unaffected status and EAR99 export classification. The DPA425R-TL is marked as RoHS non-compliant, which should be evaluated against your system's compliance requirements. The identical HTSUS code (8542.39.0001) confirms tariff classification consistency.

Moisture Sensitivity:

Both parts carry MSL 4 (72 Hours) rating, indicating identical moisture sensitivity requirements for storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the DPA425R-TL be used as a direct replacement for the DPA425SN without any modifications?

A: The DPA425R-TL is electrically equivalent to the DPA425SN across all specified parameters. However, the package difference (S-PAK versus TO-263-7C) requires PCB layout modification. The pin configuration and footprint are different, necessitating circuit board redesign before the substitute part can be installed.

Q: What is the significance of the DPA425SN being obsolete?

A: Obsolete status indicates that the DPA425SN is no longer manufactured by Power Integrations. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. The DPA425R-TL, with active product status, provides a sustainable alternative for new designs and ongoing production.

Q: Are the electrical characteristics identical between DPA425SN and DPA425R-TL?

A: Yes. Both parts operate with identical input voltage range (16V ~ 75V), output voltage (220V), single output configuration, and operating temperature range (-40°C ~ 125°C). They are designed for the same Power Over Ethernet and Telecom Applications and share the same DPA-Switch® converter architecture.

Q: What does the package designation TO-263-7C mean?

A: TO-263-7C is a surface mount package configuration also known as D2PAK with 6 Leads + Tab. The "7C" designation indicates the specific variant with 7 connection points (6 leads plus a tab for thermal connection). This differs from the S-PAK package used in the DPA425SN.

Q: Are there any compliance differences between these parts?

A: Both parts maintain identical REACH Unaffected status and EAR99 export classification. The DPA425R-TL is marked as RoHS non-compliant. If your application requires RoHS compliance, this distinction must be evaluated against your system requirements.

Q: What is MSL 4 (72 Hours) and how does it affect handling?

A: MSL 4 (Moisture Sensitivity Level 4) with 72-hour floor life indicates that the component can be exposed to ambient conditions (typically 30°C / 60% relative humidity) for a maximum of 72 hours after the package is opened. Both parts carry this identical rating, requiring the same moisture control procedures during storage and assembly.

Q: Can I use the DPA425SN and DPA425R-TL interchangeably in existing inventory?

A: No. The package difference prevents direct interchangeability. While electrically equivalent, the different footprints mean each part requires its own PCB design. Mixing parts in the same production run would require separate circuit boards for each package type.

Q: What should I consider when transitioning from DPA425SN to DPA425R-TL?

A: Primary considerations include PCB layout redesign for the TO-263-7C package, thermal management evaluation for the new package configuration, and verification of RoHS compliance requirements for your application. All electrical parameters remain identical, simplifying the functional transition.