UP2.8B-100-R Equivalent & Substitute Parts

Part Overview

The UP2.8B-100-R is a 10 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 2.8 series. This surface mount component is rated for 2.1 A continuous current with a maximum DC resistance of 80 mOhm and operates across the temperature range of -40°C to 85°C. The component is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity.

Substitute parts are identified when equivalent inductance values, current ratings, and electrical characteristics align within acceptable engineering tolerances, allowing direct replacement in circuit applications without performance degradation.

Substiute Parts

UP2.8B-100-R

Eaton - Electronics DivisionIn Stock: 817UP2.8B-100-R Datasheet

Current PartRFQ

P0762.103NLT

Pulse ElectronicsIn Stock: 1183P0762.103NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2.8B-100-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH (within ±20% tolerance specification)
• Inductance test frequency: 100 kHz
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Package classification: Nonstandard

Secondary Electrical Criteria:

• Current rating: Minimum 2.0 A (substitute must support circuit current demands)
• DC resistance: Maximum 110 mOhm (acceptable variance from 80 mOhm baseline)
• Saturation current (Isat): Minimum 2.4 A (maintains design margin)

Compliance and Environmental Criteria:

• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• MSL rating: 1 (Unlimited) or equivalent
• Operating temperature range: Minimum -40°C to 85°C coverage

The P0762.103NLT from Pulse Electronics meets all primary and secondary criteria, with acceptable trade-offs in DC resistance and saturation current within engineering design margins.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (UP2.8B-100-R): The UP2.8B-100-R remains the preferred selection when Eaton components are specified or when the lower DC resistance of 80 mOhm is critical to circuit performance. This component carries Active product status and is RoHS Compliant with 806 units in current inventory.

Substitute Component (P0762.103NLT): The P0762.103NLT from Pulse Electronics is suitable for direct substitution when supply constraints affect the primary component. This substitute maintains Active product status and carries ROHS3 Compliant certification. The extended operating temperature range (-40°C to 130°C) provides additional thermal margin beyond the primary component specification. The 30 mOhm increase in maximum DC resistance (110 mOhm vs. 80 mOhm) is acceptable for most circuit applications where power dissipation is not the limiting design factor. Current inventory of 1139 units provides supply availability.

Compliance Basis: Both components meet RoHS requirements and carry MSL 1 (Unlimited) ratings, ensuring compatibility with standard manufacturing and storage conditions. The dimensional variance between components (0.05mm length, 0.20mm height) falls within typical PCB layout tolerances for nonstandard surface mount packages.

Frequently Asked Questions (FAQ)

Q: Can the P0762.103NLT replace the UP2.8B-100-R in all applications?

A: The P0762.103NLT is suitable for substitution in applications where the circuit current does not exceed 2.0 A and where the increased DC resistance of 110 mOhm (versus 80 mOhm) does not create unacceptable power dissipation. Verify circuit current requirements and thermal design margins before substitution.

Q: What is the significance of the 30 mOhm difference in DC resistance?

A: The DC resistance difference affects power dissipation according to P = I²R. At the rated current of 2.0 A, the additional 30 mOhm results in approximately 0.12 mW additional dissipation. This is negligible in most applications but should be evaluated in thermally constrained designs.

Q: Are the physical dimensions compatible with the PCB layout?

A: The dimensional differences are minimal: 0.05mm in length and 0.20mm in height. These variances are within standard PCB layout tolerances for nonstandard surface mount packages. No PCB redesign is required for substitution.

Q: What is the difference between the saturation current ratings?

A: The UP2.8B-100-R has an Isat of 2.7 A, while the P0762.103NLT has an Isat of 2.4 A. Both exceed their respective continuous current ratings, providing design margin. The 0.3 A difference is acceptable for circuits operating below 2.0 A continuous current.

Q: Do both components have the same RoHS compliance status?

A: The UP2.8B-100-R is RoHS Compliant, and the P0762.103NLT is ROHS3 Compliant. Both meet current RoHS requirements and are acceptable for use in RoHS-regulated applications.

Q: What is the MSL rating and why does it matter?

A: Both components carry MSL 1 (Unlimited), indicating unlimited shelf life without moisture baking requirements. This simplifies inventory management and reduces manufacturing process constraints.

Q: Can the extended temperature range of the P0762.103NLT cause compatibility issues?

A: No. The extended operating range (-40°C to 130°C for the substitute versus -40°C to 85°C for the primary) provides additional thermal margin. The substitute is fully compatible with applications requiring the primary component's temperature range.