UP3B-101-R Equivalent & Substitute Parts

Part Overview

The UP3B-101-R is a 100 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 1.4 A continuous current with a maximum DC resistance of 205.3 mOhm. This component is part of the UNI-PAC™ series and is classified as Active product status. The part is packaged in Tape & Reel format for surface mount applications and operates across the temperature range of -40°C to 85°C. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for the application.

Substiute Parts

UP3B-101-R

Eaton - Electronics DivisionIn Stock: 1092UP3B-101-R Datasheet

Current PartRFQ

SDR1806-101KL

Bourns Inc.In Stock: 1876SDR1806-101KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP3B-101-R is permissible when the alternative component maintains the following critical parameters within acceptable engineering tolerances:

Primary Substitution Criteria:

• Inductance value of 100 µH at 100 kHz test frequency
• Unshielded drum core wirewound construction with ferrite core material
• Surface mount packaging in Tape & Reel format
• Current rating equal to or greater than 1.4 A
• DC resistance not exceeding 205.3 mOhm
• Operating temperature range encompassing -40°C to 85°C minimum
• RoHS compliance status

The SDR1806-101KL from Bourns Inc. satisfies these substitution criteria through equivalent inductance specification, superior current rating (1.7 A), lower DC resistance (190 mOhm), and extended operating temperature range (-40°C to 125°C). Both components utilize ferrite drum core construction and are packaged for surface mount assembly.

Parameter Comparison

Engineering Selection Recommendations

The SDR1806-101KL qualifies as a direct substitute for the UP3B-101-R based on the following engineering criteria:

Electrical Compatibility: Both components deliver 100 µH inductance at the 100 kHz test frequency. The SDR1806-101KL provides superior electrical performance through higher current rating (1.7 A versus 1.4 A), higher saturation current (3.2 A versus 1.8 A), and lower DC resistance (190 mOhm versus 205.3 mOhm maximum). These characteristics ensure the substitute part operates within or below the thermal and electrical stress levels of the original specification.

Mechanical Compatibility: Both parts utilize identical mounting technology (surface mount), packaging format (Tape & Reel), and core construction (ferrite drum core, unshielded). Physical dimensions are comparable, with the SDR1806-101KL measuring 18.30 mm × 14.00 mm × 6.90 mm versus the UP3B-101-R at 19.30 mm × 13.21 mm × 6.80 mm, permitting direct board-level substitution.

Compliance Status: Both components maintain RoHS compliance (UP3B-101-R: RoHS Compliant; SDR1806-101KL: ROHS3 Compliant) and unlimited moisture sensitivity level (MSL 1). The SDR1806-101KL additionally provides REACH Unaffected status.

Temperature Performance: The SDR1806-101KL extends the operating temperature range to -40°C to 125°C, exceeding the UP3B-101-R specification of -40°C to 85°C, providing enhanced thermal margin for applications requiring elevated temperature operation.

Frequently Asked Questions (FAQ)

Q: Can the SDR1806-101KL replace the UP3B-101-R in all applications?

A: Yes. The SDR1806-101KL meets or exceeds all critical electrical parameters (inductance, current rating, saturation current, DC resistance) and maintains mechanical compatibility through equivalent surface mount packaging and ferrite drum core construction. Both components operate within the -40°C to 85°C range specified for the UP3B-101-R, with the substitute providing extended temperature capability to 125°C.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Current rating: SDR1806-101KL rated 1.7 A versus UP3B-101-R at 1.4 A; (2) DC resistance: SDR1806-101KL maximum 190 mOhm versus UP3B-101-R at 205.3 mOhm; (3) Inductance tolerance: SDR1806-101KL ±10% versus UP3B-101-R ±20%; (4) Operating temperature: SDR1806-101KL extends to 125°C versus UP3B-101-R at 85°C maximum; (5) Saturation current: SDR1806-101KL 3.2 A versus UP3B-101-R at 1.8 A.

Q: Are there any package or footprint concerns when substituting?

A: No. Both components are packaged in Tape & Reel format for surface mount assembly. Physical dimensions are comparable (UP3B-101-R: 19.30 mm L × 13.21 mm W × 6.80 mm H; SDR1806-101KL: 18.30 mm L × 14.00 mm W × 6.90 mm H), permitting direct board-level substitution without layout modifications.

Q: Does the tighter inductance tolerance of the SDR1806-101KL affect compatibility?

A: No. The SDR1806-101KL tolerance of ±10% is tighter than the UP3B-101-R tolerance of ±20%, meaning the substitute provides more precise inductance control. This represents an improvement in component consistency and does not create compatibility issues.

Q: What is the significance of the lower DC resistance in the SDR1806-101KL?

A: Lower DC resistance (190 mOhm versus 205.3 mOhm) reduces resistive losses and heat generation during operation. This characteristic improves efficiency and thermal performance, particularly in applications operating at or near the 1.4 A current rating of the original part.

Q: Are both components RoHS compliant?

A: Yes. The UP3B-101-R is RoHS Compliant, and the SDR1806-101KL is ROHS3 Compliant. Both meet environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.