UP2B-101-R Equivalent & Substitute Parts Reference

Part Overview

The UP2B-101-R is a 100 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 1.2 A continuous current. This component is part of the UNI-PAC™ series and maintains Active product status with full RoHS3 compliance. The inductor is designed for surface mount applications in nonstandard package configurations and operates across the -40°C to 85°C temperature range.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and environmental requirements for the application.

Substiute Parts

UP2B-101-R

Eaton - Electronics DivisionIn Stock: 1232UP2B-101-R Datasheet

Current PartRFQ

B82476A1104M000

EPCOS - TDK ElectronicsIn Stock: 6656B82476A1104M000 Datasheet

SimilarRFQ

P0752.104NL

Pulse ElectronicsIn Stock: 2054P0752.104NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2B-101-R is determined by strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 100 µH (±20% tolerance band)
• Current rating: minimum 1.2 A continuous
• DC resistance: must not exceed 270.7 mOhm maximum
• Core type: ferrite drum core or equivalent unshielded wirewound construction
• Shielding: unshielded configuration
• Mounting: surface mount technology
• Compliance: RoHS3 and REACH requirements

Secondary Compatibility Factors:

• Operating temperature range must encompass or exceed -40°C to 85°C
• Inductance test frequency: 100 kHz
• Moisture sensitivity level: MSL 1 (Unlimited)
• Package classification: nonstandard surface mount

Parts meeting all primary criteria are classified as direct substitutes. Deviations in secondary factors are noted for application-specific evaluation.

Parameter Comparison

Engineering Selection Recommendations

B82476A1104M000 (EPCOS - TDK Electronics)

This part qualifies as a direct substitute for the UP2B-101-R. The B82476A1104M000 maintains identical inductance and tolerance specifications while providing superior electrical performance through lower DC resistance (230 mOhm vs. 270.7 mOhm) and higher saturation current (1.2 A vs. 950 mA). The extended operating temperature range (-55 to 150°C) exceeds the original specification. Physical dimensions are slightly reduced (12.95 x 9.40 mm vs. 13.97 x 10.41 mm), which may provide layout advantages. All compliance certifications (RoHS3, REACH, MSL 1) are maintained. This substitute is suitable for direct replacement in applications where the reduced footprint and improved electrical characteristics are compatible with circuit design requirements.

P0752.104NL (Pulse Electronics)

This part meets the primary substitution criteria with matching inductance, tolerance, and current rating specifications. DC resistance is higher at 380 mOhm compared to the original 270.7 mOhm specification, representing a 40% increase in resistive losses. Saturation current matches the substitute at 1.2 A. Operating temperature range extends to 130°C, providing adequate coverage for the original -40 to 85°C requirement. Physical dimensions match the EPCOS substitute (12.95 x 9.40 mm). All compliance requirements are satisfied. Selection of this part should account for the elevated DC resistance impact on circuit performance and thermal dissipation characteristics.

Frequently Asked Questions (FAQ)

Q: Can B82476A1104M000 be used as a direct replacement for UP2B-101-R without circuit modification?

A: Yes. The B82476A1104M000 maintains the same inductance value (100 µH ±20%) and meets or exceeds all electrical performance parameters. The lower DC resistance and higher saturation current represent improvements over the original specification. Physical dimensions are slightly smaller, which may require PCB layout verification but does not prevent functional substitution.

Q: What is the significance of the DC resistance difference between UP2B-101-R (270.7 mOhm) and P0752.104NL (380 mOhm)?

A: DC resistance directly affects power dissipation and thermal performance. At the rated 1.2 A current, the P0752.104NL will dissipate approximately 40% more power than the original part. In applications with tight thermal budgets or high-frequency switching, this difference may impact component temperature rise and circuit reliability. Thermal analysis is required for applications operating near maximum current ratings.

Q: Are all three parts compatible with the same PCB footprint?

A: No. The UP2B-101-R has larger dimensions (13.97 x 10.41 mm) compared to both substitute parts (12.95 x 9.40 mm). The B82476A1104M000 and P0752.104NL share identical footprint dimensions and can be used interchangeably from a layout perspective. The original UP2B-101-R requires a larger pad pattern. Height differences (UP2B-101-R: 6.00 mm, B82476A1104M000: 5.08 mm, P0752.104NL: 5.46 mm) must be verified for clearance in confined assembly spaces.

Q: Do all substitute parts maintain RoHS3 and REACH compliance?

A: Yes. Both B82476A1104M000 and P0752.104NL are RoHS3 compliant and REACH unaffected, matching the original UP2B-101-R specification. All three parts carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special storage or handling requirements.

Q: Which substitute part offers the best overall performance match?

A: B82476A1104M000 provides the closest electrical performance match with lower DC resistance and higher saturation current, representing performance improvements over the original. P0752.104NL maintains functional equivalence but with elevated resistive losses. Selection depends on application-specific requirements for power dissipation, thermal management, and available PCB space.

Q: What is the inductance test frequency, and does it affect substitution validity?

A: All three parts are tested at 100 kHz inductance frequency. This standardized test condition ensures measurement consistency across manufacturers and validates the ±20% tolerance specification. Substitution validity is not affected by this parameter as long as the application operating frequency remains within the linear inductance region of each component.