UP2C-3R3-R Equivalent & Substitute Parts

Part Overview

The UP2C-3R3-R is a 3.3 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, rated for 5.9 A continuous current with a DC resistance of 10.5mOhm. This component is part of the UNI-PAC™ 2C series and operates across the temperature range of -40°C to 85°C. The part is currently classified as obsolete, necessitating identification of equivalent alternatives for ongoing design support and procurement requirements.

Substiute Parts

UP2C-3R3-R

Eaton - Electronics DivisionIn Stock: 1155UP2C-3R3-R Datasheet

Current PartRFQ

B82476B1332M100

EPCOS - TDK ElectronicsIn Stock: 1336B82476B1332M100 Datasheet

DirectRFQ

SDR1005-3R3ML

Bourns Inc.In Stock: 2498SDR1005-3R3ML Datasheet

DirectRFQ

P0751.332NL

Pulse ElectronicsIn Stock: 4123P0751.332NL Datasheet

SimilarRFQ

P0751.332NLT

Pulse ElectronicsIn Stock: 16480P0751.332NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UP2C-3R3-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.3 µH
• Inductance tolerance: ±20%
• Core type: Ferrite drum core
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Criteria:

• Current rating: minimum 5.9 A (or acceptable for application with lower rating if design permits)
• DC resistance: within acceptable range for application thermal and performance requirements
• Saturation current: sufficient margin above operating current
• Operating temperature range: must encompass or exceed -40°C to 85°C minimum

All identified substitute parts maintain the core inductance specification, ferrite drum core construction, unshielded configuration, and surface mount packaging. Variations in DC resistance, current rating, and operating temperature ranges are documented to enable design-specific selection.

Parameter Comparison

Engineering Selection Recommendations

B82476B1332M100 (EPCOS - TDK Electronics)

This part provides the closest electrical match to the UP2C-3R3-R with identical current rating (5.9 A) and inductance specification (3.3 µH). The DC resistance increase from 10.5mOhm to 13.5mOhm represents a 28.6% rise, which requires thermal analysis for applications sensitive to resistive losses. The extended operating temperature range (-55°C to 150°C) exceeds the original specification. The part carries AEC-Q200 qualification and ROHS3 compliance, supporting automotive and regulated applications. Active product status ensures long-term availability.

SDR1005-3R3ML (Bourns Inc.)

This substitute maintains the 3.3 µH inductance and ferrite drum core construction with active product status and ROHS3 compliance. The current rating is reduced to 5.0 A, requiring design verification for applications operating at or near the original 5.9 A specification. DC resistance increases to 15mOhm maximum. The operating temperature range (-40°C to 125°C) covers the original specification with extended upper limit. This part is suitable for applications with current headroom below 5.9 A.

P0751.332NLT (Pulse Electronics)

This part maintains 3.3 µH inductance with a current rating of 5.4 A and active product status. The DC resistance of 18mOhm maximum represents the highest among substitutes, requiring thermal evaluation for power-sensitive applications. The operating temperature range (-40°C to 130°C) exceeds the original specification. ROHS3 compliance and tape & reel packaging support high-volume production environments. This part is suitable for applications where current requirements are below 5.4 A and resistive losses are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the B82476B1332M100 directly replace the UP2C-3R3-R?

A: The B82476B1332M100 matches the inductance value (3.3 µH), tolerance (±20%), current rating (5.9 A), and core material (ferrite). The primary difference is DC resistance increase from 10.5mOhm to 13.5mOhm. Direct replacement is permissible when thermal performance with increased resistive losses is acceptable for the application.

Q: Why does the SDR1005-3R3ML have a lower current rating than the original part?

A: The SDR1005-3R3ML is rated for 5.0 A continuous current compared to the UP2C-3R3-R's 5.9 A rating. This reflects different core geometry and wire gauge design. Applications operating below 5.0 A can use this part without derating. Applications requiring the full 5.9 A specification should use the B82476B1332M100 or P0751.332NLT.

Q: What is the impact of increased DC resistance in substitute parts?

A: DC resistance directly affects resistive power loss (P = I²R). The UP2C-3R3-R at 10.5mOhm dissipates 0.365 W at 5.9 A. The B82476B1332M100 at 13.5mOhm dissipates 0.470 W, the SDR1005-3R3ML at 15mOhm dissipates 0.528 W, and the P0751.332NLT at 18mOhm dissipates 0.632 W at the same current. Thermal design must accommodate these increased losses.

Q: Are all substitute parts RoHS compliant?

A: The B82476B1332M100, SDR1005-3R3ML, and P0751.332NLT are all ROHS3 compliant. The original UP2C-3R3-R RoHS status is not specified in the provided data. Compliance verification with specific regulatory requirements is necessary for regulated applications.

Q: What packaging options are available for these substitutes?

A: The B82476B1332M100 and P0751.332NLT are supplied in tape & reel (TR) packaging suitable for automated assembly. The SDR1005-3R3ML is also available in tape & reel. The original UP2C-3R3-R packaging format is not specified. Confirm packaging compatibility with assembly equipment and procurement requirements.

Q: Can these parts be used interchangeably in the same PCB footprint?

A: All substitute parts are surface mount components with similar physical dimensions (approximately 0.510" L x 0.370" W x 0.200-0.215" H). Verify exact footprint compatibility with PCB design specifications. Height variations (0.200" to 0.215") may affect clearance in space-constrained applications.

Q: Which substitute part offers the best long-term availability?

A: All three substitute parts carry active product status, indicating ongoing manufacturing and availability. The B82476B1332M100 (EPCOS - TDK) and SDR1005-3R3ML (Bourns) are established manufacturers with broad distribution networks. The P0751.332NLT (Pulse Electronics) also maintains active status with substantial inventory levels (16,445 pcs).