UP4B-2R2-R Equivalent & Substitute Parts Reference

Part Overview

The UP4B-2R2-R is a 2.2 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 12 A continuous current with a maximum DC resistance of 4.8 mOhm. This component is classified as Active product status and is RoHS Compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for surface mount applications requiring fixed inductance values in the 2.2 µH range.

Substiute Parts

UP4B-2R2-R

Eaton - Electronics DivisionIn Stock: 869UP4B-2R2-R Datasheet

Current PartRFQ

SDR2207-2R2ML

Bourns Inc.In Stock: 1175SDR2207-2R2ML Datasheet

DirectRFQ

P1252.222NL

Pulse ElectronicsIn Stock: 2802P1252.222NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP4B-2R2-R are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 2.2 µH (within ±20% tolerance specification)
• Inductance test frequency: 100 kHz
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Package classification: Nonstandard

Secondary Compatibility Parameters:

• Current rating: minimum 12 A continuous
• DC resistance: acceptable range determined by application thermal and efficiency requirements
• Operating temperature range: minimum -40°C to 85°C overlap
• RoHS compliance status: Active product with current certification

Substitutes are grouped as Direct Manufacturer Equivalent or Similar Manufacturer Alternative based on electrical parameter alignment and physical dimension compatibility within the nonstandard package classification.

Parameter Comparison

Engineering Selection Recommendations

SDR2207-2R2ML (Bourns Inc.) - Direct Manufacturer Equivalent

The SDR2207-2R2ML qualifies as a direct substitute based on matching inductance value, tolerance, core material, and shielding configuration. This part demonstrates higher current rating (13 A versus 12 A) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). DC resistance is specified at 7.5 mOhm maximum, which is higher than the UP4B-2R2-R at 4.8 mOhm maximum. Physical dimensions are within acceptable tolerance for nonstandard package classification. ROHS3 compliance status is current. Selection of this substitute is appropriate when the higher DC resistance is acceptable for the application thermal budget and when extended temperature operation is not required but provides design margin.

P1252.222NL (Pulse Electronics) - Similar Manufacturer Alternative

The P1252.222NL qualifies as a similar alternative based on matching inductance value, tolerance, and shielding configuration. Current rating matches the primary specification at 12 A. DC resistance is specified at 6.1 mOhm maximum, intermediate between the primary part and the Bourns alternative. Operating temperature range extends to 130°C. Physical dimensions show minor variation within acceptable tolerance for nonstandard package classification. ROHS3 compliance status is current. Selection of this substitute is appropriate when DC resistance performance between the primary and Bourns options is required, or when extended temperature operation provides design benefit.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the UP4B-2R2-R?

A: Substitution is determined by matching inductance value (2.2 µH), inductance tolerance (±20%), core material (ferrite), shielding type (unshielded), and mounting configuration (surface mount). Current rating must meet or exceed 12 A. DC resistance, operating temperature range, and physical dimensions must be compatible with application requirements.

Q: Can I use the SDR2207-2R2ML if my circuit requires lower DC resistance?

A: The SDR2207-2R2ML has a maximum DC resistance of 7.5 mOhm, which is higher than the UP4B-2R2-R specification of 4.8 mOhm maximum. If your application has strict DC resistance requirements below 7.5 mOhm, this substitute is not appropriate. The P1252.222NL at 6.1 mOhm maximum may be considered if this value is acceptable.

Q: Are the physical dimensions compatible for PCB layout?

A: All three parts are classified as nonstandard package type with similar footprint dimensions. Length ranges from 22.00 mm to 22.33 mm, width from 15.00 mm to 15.14 mm, and height from 7.49 mm to 7.87 mm. These variations are within typical PCB layout tolerance for surface mount components. Verify specific footprint requirements with your PCB design specifications.

Q: What is the difference between the Bourns and Pulse Electronics options?

A: The Bourns SDR2207-2R2ML offers higher current rating (13 A) and extended temperature range (to 125°C) but with higher DC resistance (7.5 mOhm). The Pulse Electronics P1252.222NL matches the current rating (12 A) with intermediate DC resistance (6.1 mOhm) and higher temperature range (to 130°C). Selection depends on whether current headroom or lower DC resistance is prioritized for your application.

Q: Are all substitutes RoHS compliant?

A: Yes. The primary part UP4B-2R2-R is RoHS Compliant. Both substitutes, SDR2207-2R2ML and P1252.222NL, are ROHS3 Compliant, which represents current RoHS certification status.

Q: What is the saturation current difference, and does it matter?

A: The UP4B-2R2-R has saturation current (Isat) of 23.7 A, while both substitutes specify 20 A. Saturation current defines the point at which inductance begins to degrade under high current stress. If your application approaches or exceeds 20 A, the primary part provides additional margin. For applications operating well below saturation current, this difference is not a limiting factor.