DPA423P Equivalent & Substitute Parts Reference

Part Overview

The DPA423P is a DPA-Switch® Converter IC designed for Power Over Ethernet (PoE) and Telecom applications. This device functions as a voltage regulator with a single output, rated for input voltages between 16V and 75V, delivering 220V output. The DPA423P is classified as an obsolete product, which necessitates identification of equivalent substitute components for ongoing system support and new design implementations.

Substiute Parts

DPA423P

Power IntegrationsIn Stock: 2157DPA423P Datasheet

Current PartRFQ

DPA423PN

Power IntegrationsIn Stock: 7350DPA423PN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DPA423P is determined by strict equivalence across the following critical parameters:

• Manufacturer & Series: Both parts must originate from Power Integrations and belong to the DPA-Switch® series
• Electrical Specifications: Input voltage range (16V ~ 75V), output voltage (220V), and single output configuration must be identical
• Thermal Performance: Operating temperature range (-40°C ~ 125°C) must be maintained
• Physical Form Factor: Package type (8-DIP, 0.300" / 7.62mm) and through-hole mounting must match exactly
• Base Product Number: Both parts share the DPA423 base designation

The DPA423PN qualifies as a direct substitute based on complete alignment with all specified parameters. The primary distinction between these parts is packaging format and product status classification.

Parameter Comparison

Engineering Selection Recommendations

DPA423PN is the qualified substitute for DPA423P applications. Selection between these parts is determined by regulatory and supply chain requirements:

Use DPA423PN when:

• RoHS compliance is required for the end application or market
• Active product status and ongoing manufacturer support are necessary
• Tube packaging format is compatible with assembly processes
• New designs or production runs require long-term component availability

Use DPA423P when:

• Existing inventory must be consumed in legacy system repairs
• RoHS non-compliance does not conflict with application requirements
• Bulk packaging format is preferred for specific procurement workflows

Both parts deliver identical electrical and thermal performance within Power Over Ethernet and Telecom converter applications. The DPA423PN is the recommended path forward due to active product status and regulatory compliance alignment.

Frequently Asked Questions (FAQ)

Q: Can DPA423PN be used as a direct replacement for DPA423P in existing designs?

A: Yes. The DPA423PN is electrically and mechanically equivalent to the DPA423P. All critical parameters—input/output voltage specifications, operating temperature range, package form factor, and through-hole mounting configuration—are identical. The parts are pin-compatible and functionally interchangeable.

Q: What is the difference between DPA423P and DPA423PN?

A: The primary differences are product status, RoHS compliance, and packaging format. DPA423P is classified as obsolete and RoHS non-compliant, supplied in bulk packaging. DPA423PN is an active product with RoHS compliance, supplied in tube packaging. Electrical and thermal specifications are identical.

Q: Why is DPA423P marked as obsolete?

A: Product obsolescence is a manufacturer classification indicating that the part is no longer in active production. The DPA423PN serves as the active equivalent within the same product family.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both parts operate within the identical temperature range (-40°C ~ 125°C) and deliver the same electrical specifications: 16V ~ 75V input, 220V output, single output configuration.

Q: Does the packaging format (bulk vs. tube) affect electrical performance?

A: No. Packaging format is a logistics and handling consideration only. It does not impact electrical characteristics, thermal performance, or functional operation.

Q: Is the 8-DIP package compatible with standard through-hole PCB assembly?

A: Yes. Both parts use the 8-DIP (0.300", 7.62mm) package with through-hole mounting, compatible with standard PCB assembly equipment and manual insertion processes.

Q: What compliance certifications apply to these parts?

A: Both parts carry REACH Unaffected status and EAR99 export classification. DPA423PN additionally carries RoHS Compliance certification, while DPA423P is RoHS non-compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both parts.