Equivalent & Substitute Parts for UP2B-3R3-R

Part Overview

The UP2B-3R3-R is a 3.3 µH fixed unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 6.5 A continuous current with a maximum DC resistance of 12.8 mOhm and operates across the temperature range of -40°C to 85°C. The part is RoHS Compliant and carries Active product status. Substitute parts are identified when equivalent inductance values, current ratings, and thermal operating ranges meet or exceed application requirements while maintaining compatible package dimensions and electrical characteristics.

Substiute Parts

UP2B-3R3-R

Eaton - Electronics DivisionIn Stock: 2019UP2B-3R3-R Datasheet

Current PartRFQ

B82476A1332M000

EPCOS - TDK ElectronicsIn Stock: 1471B82476A1332M000 Datasheet

SimilarRFQ

P0751.332NL

Pulse ElectronicsIn Stock: 4123P0751.332NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2B-3R3-R is determined by the following criteria:

Primary Matching Criteria:

• Inductance value must equal 3.3 µH
• Current rating must be 6.5 A or higher
• Saturation current (Isat) must be 5.1 A or higher
• Mounting type must be Surface Mount
• Shielding configuration must be Unshielded
• Tolerance must be ±20% or tighter

Secondary Compatibility Factors:

• DC Resistance (DCR) should not significantly exceed the main part specification to avoid thermal performance degradation
• Operating temperature range of substitute must encompass the application's thermal requirements
• Package dimensions should be compatible with PCB layout constraints
• RoHS and regulatory compliance status should align with end-product requirements

Identified Substitutes:

1. B82476A1332M000 (EPCOS - TDK Electronics): Meets primary criteria with 5.4 A current rating and 6.4 A Isat. Operating temperature range extends to -55°C to 150°C. DCR is 13.5 mOhm Max. Ferrite drum core, unshielded, ±20% tolerance. ROHS3 Compliant.

2. P0751.332NL (Pulse Electronics): Meets primary criteria with 5.4 A current rating and 6.4 A Isat. Operating temperature range is -40°C to 130°C. DCR is 18 mOhm Max. Unshielded wirewound inductor, ±20% tolerance. ROHS3 Compliant.

Parameter Comparison

Engineering Selection Recommendations

UP2B-3R3-R Selection Criteria:

• Primary choice when current rating requirement is exactly 6.5 A or higher
• Preferred for applications with strict thermal limits at -40°C to 85°C operating range
• Optimal when lowest DC resistance (12.8 mOhm Max) is critical for power efficiency
• Suitable for designs where the larger package footprint (13.97mm x 10.41mm) is accommodated
• Active product status ensures continued availability and supply chain stability

B82476A1332M000 Selection Criteria:

• Suitable when application current requirement is 5.4 A or lower
• Extended operating temperature range (-55°C to 150°C) accommodates wider thermal environments
• Higher saturation current (6.4 A) provides additional design margin
• Smaller package footprint (12.95mm x 9.40mm) enables space-constrained layouts
• ROHS3 Compliant status meets current regulatory requirements
• Ferrite drum core construction maintains electromagnetic performance consistency

P0751.332NL Selection Criteria:

• Suitable when application current requirement is 5.4 A or lower
• Operating temperature range (-40°C to 130°C) extends upper thermal limit
• Wirewound construction without specified core material provides alternative design approach
• Smaller package footprint (12.95mm x 9.40mm) enables space-constrained layouts
• ROHS3 Compliant status meets current regulatory requirements
• Higher DC resistance (18 mOhm Max) requires thermal dissipation evaluation

Compliance Considerations: All three parts carry RoHS compliance status (RoHS Compliant or ROHS3 Compliant) and Moisture Sensitivity Level 1 (Unlimited), indicating compatibility with standard manufacturing and storage processes. Selection should align with end-product regulatory requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can B82476A1332M000 replace UP2B-3R3-R in all applications?

A: B82476A1332M000 is a valid substitute when the application current requirement does not exceed 5.4 A. The main part UP2B-3R3-R is rated for 6.5 A, so applications requiring the full 6.5 A rating must use the main part or verify that B82476A1332M000's 5.4 A rating is sufficient. Both parts share identical 3.3 µH inductance, ±20% tolerance, and unshielded ferrite drum core construction.

Q: What is the impact of higher DC resistance in P0751.332NL?

A: P0751.332NL has a maximum DC resistance of 18 mOhm compared to UP2B-3R3-R's 12.8 mOhm. This 5.2 mOhm difference results in increased resistive losses and heat generation proportional to the square of the current flowing through the inductor. Applications operating at maximum current ratings should evaluate thermal performance impact.

Q: Are the package dimensions interchangeable?

A: UP2B-3R3-R measures 13.97mm x 10.41mm (L x W) with 6.00mm seated height. Both substitute parts measure 12.95mm x 9.40mm (L x W) with heights of 5.08mm (B82476A1332M000) and 5.46mm (P0751.332NL). The substitute parts are smaller and may require PCB layout adjustment. Verify that the smaller footprint is compatible with your design before substitution.

Q: Which substitute part has the best thermal performance?

A: B82476A1332M000 offers the widest operating temperature range (-55°C to 150°C) and the lowest DC resistance among substitutes at 13.5 mOhm Max. P0751.332NL extends the upper temperature limit to 130°C but carries higher DC resistance at 18 mOhm Max. Selection depends on whether extended temperature range or lower resistive losses is prioritized.

Q: Are all three parts RoHS compliant?

A: Yes. UP2B-3R3-R is RoHS Compliant. B82476A1332M000 and P0751.332NL are both ROHS3 Compliant, which represents the current RoHS directive standard. All three parts meet RoHS requirements and are suitable for applications with RoHS compliance mandates.

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

A: UP2B-3R3-R has a saturation current (Isat) of 5.1 A, while both substitute parts have 6.4 A Isat. Higher saturation current indicates the inductor can handle transient current spikes before magnetic saturation occurs. The substitute parts provide additional margin, which is beneficial for applications with current transients or switching events.

Q: Can I use these parts interchangeably in a design?

A: Interchangeability requires verification of three factors: (1) current rating compatibility—ensure the application does not exceed the substitute part's 5.4 A rating if using B82476A1332M000 or P0751.332NL; (2) thermal environment—confirm the operating temperature range encompasses your application; (3) PCB layout—verify that the smaller package footprint of substitute parts fits your design. Electrical performance (inductance, tolerance, core material) is equivalent across all three parts.