UP3B-220-R Equivalent & Substitute Parts

Part Overview

The UP3B-220-R is a 22 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 3.1 A continuous current with a maximum DC resistance of 49 mOhm and operates across the temperature range of -40°C to 85°C. The part is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design flexibility within specified tolerance ranges.

Substiute Parts

UP3B-220-R

Eaton - Electronics DivisionIn Stock: 1231UP3B-220-R Datasheet

Current PartRFQ

SDR1806-220ML

Bourns Inc.In Stock: 8427SDR1806-220ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP3B-220-R is determined by the following critical parameters:

Inductance Value: The substitute part must maintain 22 µH inductance within the ±20% tolerance band, ensuring functional equivalence in circuit operation.

Current Rating: The substitute part must support a minimum continuous current rating equal to or exceeding 3.1 A to handle the design load without thermal stress.

DC Resistance: The substitute part must maintain DC resistance at or below 49 mOhm maximum to preserve circuit efficiency and thermal characteristics.

Core Type and Shielding: Both the main part and substitute must use ferrite drum core construction with unshielded configuration to maintain electromagnetic behavior and PCB layout compatibility.

Mounting and Package: Surface mount technology with nonstandard package dimensions must be compatible with existing PCB footprints and assembly processes.

Compliance and Environmental: Both parts must meet RoHS3 compliance and operate within overlapping or equivalent temperature ranges.

The SDR1806-220ML from Bourns Inc. satisfies all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (UP3B-220-R): Select this Eaton component when design specifications explicitly require the -40°C to 85°C operating temperature range and when inventory availability is confirmed. This part maintains Active product status with established supply chain presence.

Substitute Part (SDR1806-220ML): The Bourns SDR1806-220ML is electrically and mechanically compatible for applications where the extended operating temperature range (-40°C to 125°C) provides design margin or where higher current saturation (6.7 A versus 3.7 A) is beneficial. The lower DC resistance (45 mOhm versus 49 mOhm) results in reduced power dissipation. Both parts are RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Physical Dimensions: The SDR1806-220ML exhibits slightly different package dimensions (18.30mm L × 14.00mm W × 6.90mm H) compared to the UP3B-220-R (19.30mm L × 13.21mm W × 6.80mm H). PCB layout verification is required to confirm footprint compatibility before substitution.

Product Status: Both parts maintain Active status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the SDR1806-220ML directly replace the UP3B-220-R in all applications?

A: Electrical substitution is valid when the application operates within the overlapping temperature range (-40°C to 85°C) and the PCB footprint accommodates the SDR1806-220ML dimensions (18.30mm × 14.00mm × 6.90mm). Physical layout verification is mandatory before implementation.

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

A: Both parts maintain identical 22 µH inductance and ±20% tolerance. The SDR1806-220ML provides superior performance with 3.6 A current rating (versus 3.1 A), 45 mOhm maximum DC resistance (versus 49 mOhm), and 6.7 A saturation current (versus 3.7 A). These differences result in lower power loss and higher current handling capability.

Q: Are there compliance or certification differences?

A: No. Both the UP3B-220-R and SDR1806-220ML are RoHS3 compliant, REACH unaffected, and classified as Moisture Sensitivity Level 1 (Unlimited). Regulatory requirements are identical.

Q: What is the impact of the different operating temperature ranges?

A: The UP3B-220-R operates from -40°C to 85°C, while the SDR1806-220ML extends to 125°C. For applications limited to 85°C maximum, both parts are functionally equivalent. For applications requiring higher temperature operation, only the SDR1806-220ML is suitable.

Q: How do the physical dimensions affect PCB design?

A: The UP3B-220-R measures 19.30mm L × 13.21mm W × 6.80mm H. The SDR1806-220ML measures 18.30mm L × 14.00mm W × 6.90mm H. The length is 1.0mm shorter and the width is 0.79mm wider. Existing PCB footprints must be verified for dimensional compatibility before substitution.

Q: What is the significance of the lower DC resistance in the SDR1806-220ML?

A: The 45 mOhm maximum DC resistance (versus 49 mOhm) in the SDR1806-220ML reduces resistive power dissipation by approximately 8%, resulting in lower operating temperature and improved efficiency in current-carrying applications.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the UP3B-220-R and SDR1806-220ML are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.