PSR-28027 Equivalent & Substitute Parts

Part Overview

The PSR-28027 is a PTC resettable fuse chip manufactured by Littelfuse Inc. in the 0603 package format. This component is classified as obsolete and is no longer in active production. The product status change necessitates identification of functionally equivalent alternatives from active manufacturers to support ongoing design requirements and procurement needs.

Substiute Parts

PSR-28027

Littelfuse Inc.In Stock: 811PSR-28027 Datasheet

Current PartRFQ

SF-0603SP800M-2

Bourns Inc.In Stock: 1790SF-0603SP800M-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SF-0603SP800M-2 manufactured by Bourns Inc. is identified as a substitute for the PSR-28027 based on the following substitution criteria:

Key Substitution Parameters:

• Package Format: Both components utilize 0603 (1608 Metric) surface mount packaging
• Fuse Type Classification: Board mount fuse category
• Mounting Technology: Surface mount configuration
• Moisture Sensitivity Level: Both rated at MSL 1 (Unlimited)
• Environmental Compliance: Both meet RoHS3 compliance requirements

The SF-0603SP800M-2 represents an active product from a qualified manufacturer, providing continuity for applications previously served by the obsolete PSR-28027.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PSR-28027 is classified as obsolete. The SF-0603SP800M-2 is an active product from Bourns Inc., ensuring ongoing availability, technical support, and compliance with current regulatory requirements.

Compliance and Certification: The SF-0603SP800M-2 carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards. The ECCN classification of EAR99 provides standard export control compliance.

Packaging and Supply Chain: The SF-0603SP800M-2 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations and provides superior handling and placement efficiency compared to chip packaging.

Electrical and Mechanical Compatibility: Both components share identical package geometry (0603 / 1608 Metric) and surface mount configuration, enabling direct footprint compatibility on printed circuit boards.

Frequently Asked Questions (FAQ)

Q: Can the SF-0603SP800M-2 be used as a direct replacement for the PSR-28027?

A: The SF-0603SP800M-2 is compatible from a package and mounting perspective, as both utilize 0603 surface mount packaging. However, electrical parameter verification is required. The SF-0603SP800M-2 is rated at 8 A / 32 V DC with slow blow response time. Confirm that these electrical specifications align with the original circuit design requirements.

Q: What is the primary reason for substitution?

A: The PSR-28027 is obsolete and no longer manufactured. The SF-0603SP800M-2 provides an active alternative from a qualified manufacturer with equivalent package and mounting characteristics.

Q: Are there differences in packaging format between these components?

A: Yes. The PSR-28027 is supplied as a chip, while the SF-0603SP800M-2 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated surface mount assembly and provides improved handling and placement efficiency.

Q: Do both components meet current environmental compliance standards?

A: The SF-0603SP800M-2 is ROHS3 compliant and REACH unaffected. Compliance status for the PSR-28027 was not specified in the available documentation.

Q: What is the moisture sensitivity level for both components?

A: Both the PSR-28027 and SF-0603SP800M-2 are rated at MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.