UP2SC-271-R Equivalent & Substitute Parts

Part Overview

The UP2SC-271-R is a 270 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 2SC series. This component is rated for 400 mA continuous current with a maximum DC resistance of 1.1Ohm and operates across the temperature range of -25°C to 85°C. The product is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

UP2SC-271-R

Eaton - Electronics DivisionIn Stock: 1070UP2SC-271-R Datasheet

Current PartRFQ

SRR1005-271K

Bourns Inc.In Stock: 1035SRR1005-271K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2SC-271-R is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Inductance value: 270 µH ±10%
• Current rating: 400 mA minimum
• DC resistance: 1.1Ohm maximum
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Physical footprint: 12.70 x 10.00 mm base dimensions with 5.20 mm maximum seated height

Secondary Compatibility Factors:

• Package classification: Nonstandard form factor
• Moisture sensitivity level: MSL 1 (Unlimited)
• Regulatory compliance: ECCN EAR99, HTSUS 8504.50.4000

The SRR1005-271K from Bourns Inc. meets all primary matching criteria and maintains dimensional compatibility with the original UP2SC-271-R specification.

Parameter Comparison

Engineering Selection Recommendations

The SRR1005-271K from Bourns Inc. is the qualified substitute for the obsolete UP2SC-271-R. Selection is based on the following engineering factors:

Functional Equivalence: Both components deliver identical inductance (270 µH), current rating (400 mA), and DC resistance (1.1Ohm maximum) specifications. Physical footprint and mounting configuration are identical, enabling direct board-level replacement without layout modification.

Product Status: The SRR1005-271K maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity. The UP2SC-271-R obsolescence necessitates transition to an actively manufactured alternative.

Regulatory Compliance: Both components share identical ECCN (EAR99) and HTSUS (8504.50.4000) classifications. The SRR1005-271K carries ROHS3 compliance and REACH Unaffected status, meeting modern regulatory requirements.

Packaging: The SRR1005-271K is supplied in Tape & Reel (TR) format, supporting automated assembly processes. Both components maintain MSL 1 (Unlimited) moisture sensitivity classification.

Operating Conditions: The SRR1005-271K supports an extended operating temperature range (-40 to 125°C) compared to the original part (-25 to 85°C), providing additional thermal margin for demanding applications.

Saturation Current Consideration: The SRR1005-271K exhibits lower saturation current (520 mA versus 700 mA). Applications operating near or above 520 mA require circuit-level verification to ensure the substitute does not enter saturation under peak load conditions.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-271K directly replace the UP2SC-271-R without circuit modification?

A: Yes, for applications operating within 400 mA continuous current. The SRR1005-271K matches all critical electrical parameters (inductance, tolerance, DC resistance) and physical dimensions. However, applications utilizing peak currents between 520 mA and 700 mA require saturation current verification, as the substitute exhibits lower saturation performance.

Q: What is the primary reason for substitution?

A: The UP2SC-271-R is classified as obsolete. The SRR1005-271K provides functional equivalence with active manufacturing status and current supply availability.

Q: Are there dimensional compatibility concerns?

A: No. Both components share identical base dimensions (12.70 x 10.00 mm) and maximum seated height (5.20 mm). Board-level footprints are compatible without modification.

Q: How do the quality factors (Q) compare?

A: The UP2SC-271-R specifies Q of 100 at 100 kHz, while the SRR1005-271K specifies Q of 30 at 796 kHz. These measurements occur at different test frequencies, making direct comparison inappropriate. Both components are suitable for general-purpose filtering and energy storage applications within their rated current and frequency specifications.

Q: What packaging format is the SRR1005-271K supplied in?

A: The SRR1005-271K is supplied in Tape & Reel (TR) format, supporting automated pick-and-place assembly. The original UP2SC-271-R packaging format is not specified in available documentation.

Q: Are there regulatory or compliance differences?

A: Both components share identical ECCN and HTSUS classifications. The SRR1005-271K carries ROHS3 compliance and REACH Unaffected status, meeting current regulatory standards. The original part's compliance status is not documented.

Q: What is the temperature operating range difference?

A: The SRR1005-271K operates from -40 to 125°C, compared to the UP2SC-271-R range of -25 to 85°C. The substitute provides extended low-temperature and high-temperature capability, beneficial for industrial and automotive applications.