PFS704EG Power Factor Correction Controller - Equivalent & Substitute Parts

Part Overview

The PFS704EG is a Power Factor Correction (PFC) controller IC manufactured by Power Integrations, designed for continuous conduction mode (CCM) operation in power management applications. This device operates at switching frequencies between 24kHz and 95kHz and is housed in a 7-lead eSIP package with through-hole mounting.

The PFS704EG has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this PFC controller architecture.

Substiute Parts

PFS704EG

Power IntegrationsIn Stock: 5116PFS704EG Datasheet

Current PartRFQ

PFS7623H

Power IntegrationsIn Stock: 840PFS7623H Datasheet

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PFS7623H/L

Power IntegrationsIn Stock: 1081PFS7623H/L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PFS704EG is determined by the following critical parameters:

Functional Compatibility Criteria:

• Continuous Conduction Mode (CCM) operation requirement
• Power Factor Correction controller functionality
• Power Integrations HiperPFS™ series architecture
• Through-hole mounting capability
• Operating temperature range: -40°C ~ 125°C minimum

Electrical Compatibility Criteria:

• Switching frequency overlap or extended range capability
• Supply voltage range compatibility or overlap
• Lead count and pin configuration compatibility

Compliance & Environmental Criteria:

• RoHS Compliant status
• Moisture Sensitivity Level MSL 1
• REACH Unaffected status
• ECCN EAR99 classification

The PFS7623H and PFS7623H/L are identified as substitute parts within the HiperPFS™ product family, both manufactured by Power Integrations with active product status and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

PFS7623H Selection Criteria:

The PFS7623H is an active product with full technical specifications provided. This substitute maintains CCM operation mode and identical operating temperature range (-40°C ~ 125°C). The switching frequency range of 22kHz ~ 123kHz encompasses the PFS704EG operating window of 24kHz ~ 95kHz. Supply voltage range extends from 10.2V ~ 15V, which overlaps with the PFS704EG range of 10V ~ 12V.

The PFS7623H is housed in a 16-SSIP package (eSIP-16D) with 13 leads, representing a package change from the 7-SSIP configuration. This requires PCB layout and schematic redesign. The PFS7623H carries active product status, ensuring long-term availability and continued manufacturer support.

All compliance certifications align: RoHS Compliant, MSL 1, REACH Unaffected, and EAR99 classification.

PFS7623H/L Selection Criteria:

The PFS7623H/L is an active product variant within the same base product family (PFS7623). This part maintains RoHS Compliance, MSL 1, and EAR99 classification. Detailed electrical and package specifications are not provided in the available data.

Selection of PFS7623H/L requires verification of complete technical specifications against design requirements prior to implementation.

Substitution Feasibility:

Both substitute parts are manufactured by Power Integrations and operate in CCM mode within the HiperPFS™ product family. The transition from PFS704EG to either substitute requires evaluation of package compatibility, pin configuration, and PCB redesign scope. The PFS7623H provides the most complete technical specification alignment for engineering assessment.

Frequently Asked Questions (FAQ)

Q: Can the PFS7623H directly replace the PFS704EG without PCB modifications?

A: No. The PFS704EG uses a 7-SSIP package (eSIP-7G) with 6 leads, while the PFS7623H uses a 16-SSIP package (eSIP-16D) with 13 leads. PCB layout and schematic redesign are required.

Q: Are the switching frequency ranges compatible?

A: The PFS7623H switching frequency range of 22kHz ~ 123kHz encompasses the PFS704EG range of 24kHz ~ 95kHz. The substitute supports the original operating frequency window.

Q: What is the supply voltage compatibility between PFS704EG and PFS7623H?

A: The PFS704EG operates at 10V ~ 12V. The PFS7623H operates at 10.2V ~ 15V. The ranges overlap, with the substitute supporting a wider voltage window.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both PFS704EG and PFS7623H are RoHS Compliant, MSL 1 (Unlimited), REACH Unaffected, and classified as EAR99.

Q: What is the product status difference between the main part and substitutes?

A: The PFS704EG is obsolete. The PFS7623H and PFS7623H/L are active products, ensuring continued availability and manufacturer support.

Q: Is the operating temperature range identical?

A: Yes. Both PFS704EG and PFS7623H operate across -40°C ~ 125°C.

Q: What information is missing for the PFS7623H/L variant?

A: Detailed electrical specifications (switching frequency, supply voltage range) and package configuration are not provided in the available data for PFS7623H/L.