PSR-28455-2 Equivalent & Substitute Parts

Part Overview

The PSR-28455-2 is a PTC Resettable Fuse manufactured by Littelfuse Inc. This component is classified as obsolete, requiring identification of active equivalent parts for continued system design and procurement. PTC resettable fuses provide overcurrent protection through polymeric positive temperature coefficient technology, automatically resetting after fault conditions are cleared. The obsolete status of the PSR-28455-2 necessitates substitution with active product alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

PSR-28455-2

Littelfuse Inc.In Stock: 909PSR-28455-2 Datasheet

Current PartRFQ

1206L380SLTHYR

Littelfuse Inc.In Stock: 483911206L380SLTHYR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR-28455-2 is based on the following criteria derived from provided parameters:

Primary Substitution Criteria:

• Manufacturer: Littelfuse Inc. (same manufacturer ensures design continuity)
• Product Category: PTC Resettable Fuse (functional equivalence)
• Compliance Standards: RoHS compliance and EAR99 ECCN classification (regulatory alignment)
• Regulatory Codes: HTSUS 8533.40.8070 (tariff classification match)

Substitute Part Identified: The 1206L380SLTHYR qualifies as a direct substitute based on matching manufacturer, product type, compliance certifications, and regulatory classifications. This part is currently in active production status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The 1206L380SLTHYR is the qualified substitute for the obsolete PSR-28455-2 based on the following engineering factors:

Compliance Alignment: Both parts share identical ECCN (EAR99) and HTSUS (8533.40.8070) classifications, ensuring regulatory and tariff compliance continuity. The substitute part maintains RoHS compliance through ROHS3 certification, exceeding the original RoHS Compliant status.

Manufacturer Continuity: Both components are manufactured by Littelfuse Inc., ensuring design philosophy, quality standards, and technical support consistency.

Product Status: The 1206L380SLTHYR holds active product status with 48,300 units in stock, providing immediate availability and long-term supply chain security compared to the obsolete PSR-28455-2.

Certification and Approval: The substitute part carries cURus and TUV approvals, providing third-party validation of electrical safety and performance characteristics.

Frequently Asked Questions (FAQ)

Q: Why is the PSR-28455-2 no longer available? A: The PSR-28455-2 has reached obsolete status. The 1206L380SLTHYR is the active equivalent from Littelfuse Inc. that maintains functional and regulatory compatibility.

Q: What are the key compatibility factors between PSR-28455-2 and 1206L380SLTHYR? A: Both parts are PTC resettable fuses from Littelfuse Inc., share identical ECCN and HTSUS classifications, and maintain RoHS compliance. The substitute is surface-mount in 1206 package format with specified electrical ratings.

Q: Does the 1206L380SLTHYR meet the same regulatory requirements? A: Yes. Both parts carry EAR99 ECCN classification and HTSUS 8533.40.8070 coding. The substitute achieves ROHS3 compliance, which exceeds the original RoHS Compliant requirement.

Q: What is the package format of the substitute part? A: The 1206L380SLTHYR is a surface-mount component in 1206 (3216 Metric) package with concave profile, measuring 3.25mm length × 1.65mm width × 0.70mm maximum thickness.

Q: What electrical specifications define the 1206L380SLTHYR? A: Maximum voltage rating is 6V. Hold current (Ih) maximum is 2.82 A. Trip current (It) is 8 A. Maximum current rating is 50 A with 5-second trip time. Initial resistance minimum is 2 mOhms; post-trip resistance maximum is 14 mOhms.

Q: What is the operating temperature range? A: The 1206L380SLTHYR operates across -40°C to 85°C, suitable for industrial and commercial applications.

Q: Is the substitute part available in quantity? A: Yes. 48,300 units of the 1206L380SLTHYR are in stock as new original inventory, packaged in Tape & Reel (TR) format.