UP2SC-1R5-R Equivalent & Substitute Parts

Part Overview

The UP2SC-1R5-R is a 1.5 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, designed for surface mount applications requiring 4.5 A current rating and 22 mOhm maximum DC resistance. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

UP2SC-1R5-R

Eaton - Electronics DivisionIn Stock: 945UP2SC-1R5-R Datasheet

Current PartRFQ

SRR1005-1R5M

Bourns Inc.In Stock: 693SRR1005-1R5M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP2SC-1R5-R is determined by strict equivalence across the following critical parameters:

Inductance Value: 1.5 µH with ±20% tolerance is the primary functional requirement.

Current Rating: The substitute must support the application's current demands. The UP2SC-1R5-R specifies 4.5 A continuous current rating.

DC Resistance: Maximum 22 mOhm DCR establishes power loss and thermal performance boundaries.

Shielding: Shielded construction is required to contain magnetic fields and prevent coupling to adjacent circuitry.

Package Footprint: Surface mount package with identical or compatible dimensions (0.500" L x 0.394" W x 0.205" H) ensures mechanical fit on printed circuit boards.

Operating Temperature: The -25°C ~ 85°C range defines the thermal operating envelope.

The SRR1005-1R5M from Bourns Inc. meets these core substitution criteria with the following considerations: identical inductance value, shielded construction, compatible surface mount package, and matching physical dimensions. Current rating differences and operating temperature range variations are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

SRR1005-1R5M as Primary Substitute:

The SRR1005-1R5M is the designated equivalent for the obsolete UP2SC-1R5-R based on the following engineering factors:

Functional Equivalence: Both components provide 1.5 µH inductance with ±20% tolerance and shielded construction in identical surface mount packages (12.70mm x 10.00mm x 5.20mm).

Compliance Status: The SRR1005-1R5M carries active product status with ROHS3 compliance and REACH unaffected designation, supporting modern procurement and regulatory requirements. The UP2SC-1R5-R is obsolete.

Current Rating Differential: The SRR1005-1R5M specifies 3.6 A continuous current rating versus 4.5 A for the UP2SC-1R5-R. Applications operating at or below 3.6 A continuous current are directly compatible. Applications requiring the full 4.5 A rating must evaluate whether the 3.6 A rating of the substitute is acceptable for the specific circuit topology and thermal management strategy.

DC Resistance: The SRR1005-1R5M exhibits 20 mOhm maximum DCR, which is superior to the 22 mOhm maximum of the original part, resulting in lower power dissipation.

Operating Temperature: The SRR1005-1R5M supports -40°C ~ 125°C, exceeding the -25°C ~ 85°C range of the UP2SC-1R5-R.

Saturation Current: The SRR1005-1R5M saturation current is 7 A versus 9.05 A for the original. Circuit designs must confirm that peak current excursions remain below 7 A.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-1R5M directly replace the UP2SC-1R5-R in all applications?

A: Direct replacement is possible when the application current does not exceed 3.6 A continuous and 7 A saturation. The identical inductance value, tolerance, shielding, and package dimensions ensure mechanical and electrical compatibility within these current constraints. Applications requiring the full 4.5 A rating of the original part require circuit evaluation.

Q: What is the significance of the current rating difference between these parts?

A: Current rating defines the maximum continuous current the inductor can carry without exceeding temperature rise limits. The UP2SC-1R5-R is rated for 4.5 A continuous; the SRR1005-1R5M for 3.6 A. Operating the SRR1005-1R5M above 3.6 A continuous current will result in excessive temperature rise and potential component failure. Saturation current (9.05 A vs. 7 A) indicates the current level at which inductance begins to degrade significantly.

Q: Are the physical packages identical?

A: Yes. Both components are surface mount inductors with package dimensions of 0.500" L x 0.394" W x 0.205" H (12.70mm x 10.00mm x 5.20mm). PCB footprints and land patterns are compatible.

Q: What are the compliance differences?

A: The SRR1005-1R5M is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The UP2SC-1R5-R compliance status is not specified in available documentation. The SRR1005-1R5M is the active product with ongoing manufacturer support.

Q: How do the DC resistance values compare?

A: The SRR1005-1R5M specifies 20 mOhm maximum DCR versus 22 mOhm maximum for the UP2SC-1R5-R. Lower DCR reduces resistive losses and heat generation, providing a performance advantage in the substitute part.

Q: What is the difference between wirewound and drum core construction?

A: The UP2SC-1R5-R is wirewound; the SRR1005-1R5M is drum core wirewound with ferrite core material. Both are shielded and provide the same inductance value. Drum core construction with ferrite core material in the SRR1005-1R5M contributes to its compact size and thermal characteristics.

Q: Are there packaging format differences?

A: The SRR1005-1R5M is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly. The UP2SC-1R5-R packaging format is not specified. Both are suitable for automated pick-and-place assembly.

Q: What is the operating temperature range significance?

A: The SRR1005-1R5M operates from -40°C ~ 125°C, providing a wider temperature envelope than the UP2SC-1R5-R (-25°C ~ 85°C). Applications operating at temperature extremes benefit from the extended range of the substitute part.