UP2SC-270-R Equivalent & Substitute Parts

Part Overview

The UP2SC-270-R is a 27 µH shielded wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 2SC series. This component is rated for 1.3 A continuous current with a maximum DC resistance of 120 mOhm and operates across the temperature range of -25°C to 85°C. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support, maintenance, and production continuity in applications requiring this specific inductance value and current rating.

Key Parameters

Parameter	Value	Unit
Inductance	27	µH
Inductance Tolerance	±15	%
Current Rating	1.3	A
DC Resistance (Max)	120	mOhm
Shielding	Shielded	—
Mounting Type	Surface Mount	—
Package Dimensions	12.70 × 10.00 × 5.20	mm (L × W × H)
Operating Temperature Range	-25 to 85	°C
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the UP2SC-270-R is determined by strict equivalence across the following critical parameters:

Inductance Value: 27 µH with ±15% tolerance
Current Rating: Minimum 1.3 A continuous current capability
DC Resistance: Maximum 120 mOhm
Shielding: Shielded construction required
Mounting: Surface mount configuration
Package Footprint: 12.70 mm × 10.00 mm × 5.20 mm maximum height
Moisture Sensitivity: MSL 1 or better

The SRR1005-270Y from Bourns Inc. meets all these criteria and is classified as an active product, providing long-term availability and supply chain stability compared to the obsolete UP2SC-270-R.

Parameter Comparison

Parameter	UP2SC-270-R (Eaton)	SRR1005-270Y (Bourns)	Match Status
Inductance	27 µH	27 µH	Equivalent
Inductance Tolerance	±15%	±15%	Equivalent
Current Rating	1.3 A	1.3 A	Equivalent
DC Resistance (Max)	120 mOhm	120 mOhm	Equivalent
Shielding	Shielded	Shielded	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Dimensions (L × W × H)	12.70 × 10.00 × 5.20 mm	12.70 × 10.00 × 5.20 mm	Equivalent
Operating Temperature Range	-25 to 85°C	-40 to 125°C	SRR1005 exceeds range
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Obsolete	Active	Substitute is active
RoHS Compliance	Not specified	ROHS3 Compliant	Substitute compliant

Engineering Selection Recommendations

The SRR1005-270Y is the direct functional equivalent for the obsolete UP2SC-270-R. Selection of the Bourns substitute is based on the following engineering factors:

Product Status: The UP2SC-270-R is obsolete and no longer manufactured. The SRR1005-270Y is an active product with confirmed ongoing production and supply availability.

Electrical Equivalence: Both inductors provide identical inductance (27 µH), current rating (1.3 A), and DC resistance (120 mOhm maximum). The tolerance specification (±15%) is identical, ensuring circuit performance consistency.

Mechanical Compatibility: Package footprint and height are identical (12.70 × 10.00 × 5.20 mm), permitting direct PCB layout substitution without redesign.

Environmental Performance: The SRR1005-270Y operates across a wider temperature range (-40 to 125°C) compared to the UP2SC-270-R (-25 to 85°C), providing enhanced thermal margin in applications subject to temperature extremes.

Regulatory Compliance: The SRR1005-270Y carries ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements for new designs and production.

Packaging: The SRR1005-270Y is supplied in Tape & Reel format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-270Y be used as a direct replacement for the UP2SC-270-R without circuit modification?

A: Yes. The SRR1005-270Y meets all critical electrical and mechanical parameters: 27 µH inductance, 1.3 A current rating, 120 mOhm maximum DC resistance, shielded construction, and identical package footprint. No circuit redesign is required.

Q: What is the difference in saturation current between these inductors?

A: The UP2SC-270-R has a saturation current (Isat) of 2.2 A, while the SRR1005-270Y has an Isat of 1.6 A. Both exceed the 1.3 A continuous current rating. Applications operating near saturation limits should verify the 1.6 A specification is acceptable for their design margin requirements.

Q: Are there packaging differences between these parts?

A: The UP2SC-270-R packaging format is not specified in available documentation. The SRR1005-270Y is supplied in Tape & Reel (TR) format, standard for automated surface mount assembly. Both parts share identical physical dimensions and mounting type (surface mount).

Q: Does the wider operating temperature range of the SRR1005-270Y affect circuit performance?

A: The SRR1005-270Y operates from -40 to 125°C compared to the UP2SC-270-R range of -25 to 85°C. This extended range does not negatively affect performance within the original part's operating window. Applications requiring the full -40 to 125°C range benefit from the substitute's enhanced thermal capability.

Q: Is the SRR1005-270Y RoHS compliant?

A: Yes. The SRR1005-270Y is ROHS3 compliant and REACH unaffected, meeting current environmental regulations for component manufacturing and use.

Q: What is the core material difference between these inductors?

A: The UP2SC-270-R core material is not specified. The SRR1005-270Y uses a ferrite drum core construction. Both are shielded wirewound inductors with equivalent electrical performance at the specified inductance and current ratings.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message