FP1308-R26-R Equivalent & Substitute Parts

Part Overview

The FP1308-R26-R is a 260 nH fixed unshielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 68 A continuous current with a maximum DC resistance of 0.24 mOhm and operates across the temperature range of -40°C to 125°C. The part is supplied in Tape & Reel packaging and maintains Active product status with RoHS compliance.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining mechanical compatibility and regulatory compliance.

Substiute Parts

FP1308-R26-R

Eaton - Electronics DivisionIn Stock: 1041FP1308-R26-R Datasheet

Current PartRFQ

PA2891.261HL

Pulse ElectronicsIn Stock: 4648PA2891.261HL Datasheet

DirectRFQ

PA2891.261HLT

Pulse ElectronicsIn Stock: 1462PA2891.261HLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FP1308-R26-R are qualified based on the following criteria:

Electrical Equivalence:

• Inductance value of 260 nH at 100 kHz test frequency
• Inductance tolerance of ±10%
• Current rating equal to or greater than 68 A
• DC resistance equal to or less than 0.24 mOhm

Mechanical Compatibility:

• Surface mount technology
• Identical package dimensions: 13.70mm L × 12.95mm W × 8.00mm H (maximum seated height)
• Nonstandard package classification

Regulatory Compliance:

• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• Moisture Sensitivity Level 1 (Unlimited)

Thermal Performance:

• Operating temperature range of -40°C to 125°C or wider

The substitute parts identified (PA2891.261HL and PA2891.261HLT) meet all electrical and mechanical criteria. Both parts exceed the minimum current rating (72 A vs. 68 A required) and provide lower DC resistance (0.22 mOhm vs. 0.24 mOhm maximum), representing improved electrical performance. The primary distinction between substitutes is packaging format: PA2891.261HLT is supplied in Tape & Reel format matching the original part, while PA2891.261HL is supplied in alternative packaging.

Parameter Comparison

Engineering Selection Recommendations

PA2891.261HLT (Pulse Electronics) - Preferred Substitute

PA2891.261HLT is the primary substitute for FP1308-R26-R. This part maintains identical physical dimensions and Tape & Reel packaging format, ensuring direct compatibility with existing assembly processes. Electrical performance exceeds the original specification: the 72 A current rating provides 5.9% additional capacity over the 68 A requirement, and the 0.22 mOhm DC resistance is 8.3% lower than the 0.24 mOhm maximum. The extended operating temperature range (-40°C to 130°C) provides 5°C additional high-temperature margin. ROHS3 compliance satisfies current regulatory requirements. Saturation current of 67 A exceeds the original 60 A specification.

PA2891.261HL (Pulse Electronics) - Alternative Substitute

PA2891.261HL provides identical electrical specifications to PA2891.261HLT but is supplied in bulk packaging rather than Tape & Reel format. This part is suitable for applications where packaging format flexibility is acceptable or where bulk quantities are preferred. All electrical and thermal performance characteristics match PA2891.261HLT.

Shielding Consideration

Both substitute parts incorporate shielding, whereas the FP1308-R26-R is unshielded. Shielded construction reduces electromagnetic interference emission and susceptibility. In applications where the original unshielded design was selected for specific electromagnetic coupling requirements, shielding may alter circuit behavior. Circuit validation is necessary to confirm shielded inductor compatibility with the intended application.

Frequently Asked Questions (FAQ)

Q: Can PA2891.261HL and PA2891.261HLT be used interchangeably with FP1308-R26-R?

A: Both Pulse Electronics parts meet the electrical and mechanical specifications of the FP1308-R26-R. PA2891.261HLT is the direct substitute, matching the Tape & Reel packaging format. PA2891.261HL provides identical electrical performance but requires alternative packaging handling procedures.

Q: What is the significance of the shielding difference?

A: The FP1308-R26-R is unshielded, while PA2891.261HL and PA2891.261HLT are shielded. Shielding reduces electromagnetic field radiation and external interference coupling. In circuits designed around unshielded inductor characteristics, shielding may affect circuit performance. Application-specific validation is required.

Q: Are the physical dimensions identical?

A: Yes. All three parts share identical package dimensions of 13.70mm length × 12.95mm width × 8.00mm maximum seated height. PCB footprint and assembly clearances are equivalent.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both PA2891.261HL and PA2891.261HLT carry ROHS3 compliance certification, meeting current RoHS Directive requirements. The original FP1308-R26-R carries RoHS Compliant status. Both compliance levels are acceptable for regulatory purposes.

Q: What is the current rating difference?

A: The FP1308-R26-R is rated for 68 A continuous current. Both substitute parts are rated for 72 A, providing 4 A additional capacity. Saturation current also increases from 60 A to 67 A in the substitute parts.

Q: Is the DC resistance improvement significant?

A: The substitute parts provide 0.22 mOhm DC resistance compared to the 0.24 mOhm maximum of the original part. This 0.02 mOhm reduction represents 8.3% lower resistance, resulting in reduced power dissipation and improved thermal performance in high-current applications.

Q: What is the temperature range difference?

A: The FP1308-R26-R operates from -40°C to 125°C. Both substitute parts extend the upper limit to 130°C, providing 5°C additional high-temperature margin. The lower temperature limit remains -40°C for all three parts.

Q: Which substitute should be selected for new designs?

A: PA2891.261HLT is recommended for new designs requiring Tape & Reel packaging compatibility with existing assembly infrastructure. PA2891.261HL is suitable when bulk packaging is acceptable or preferred.