UP3B-470 Equivalent & Substitute Parts Reference

Part Overview

The UP3B-470 is a 47 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ series. This surface mount component is rated for 1.9 A continuous current with a maximum DC resistance of 108.2 mOhm and operates across the temperature range of -40°C to 85°C.

The UP3B-470 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

UP3B-470

Eaton - Electronics DivisionIn Stock: 1049UP3B-470 Datasheet

Current PartRFQ

UP3B-470-R

Eaton - Electronics DivisionIn Stock: 2098UP3B-470-R Datasheet

DirectRFQ

SLF12565T-470M2R4-PF

TDK CorporationIn Stock: 4534SLF12565T-470M2R4-PF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP3B-470 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Packaging Variant): UP3B-470-R maintains identical electrical specifications, core material, inductance value, current rating, and DC resistance. The primary distinction is packaging format and product status transition from obsolete to active.

Similar Specification Alternative (Cross-Manufacturer): SLF12565T-470M2R4-PF shares the same inductance value (47 µH), core material (ferrite), and saturation current (2.4 A). Substitution is permissible where the following parameter variations are acceptable: increased current rating (2.8 A versus 1.9 A), reduced DC resistance (69.4 mOhm versus 108.2 mOhm), shielded construction (versus unshielded), expanded operating temperature range (-20°C to 105°C versus -40°C to 85°C), and different physical footprint (12.50 mm × 12.50 mm versus 19.30 mm × 13.21 mm).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): UP3B-470-R is the primary substitute for UP3B-470. Both components share identical electrical and mechanical specifications. UP3B-470-R transitions from obsolete to active product status, ensuring continued manufacturer support and supply chain availability. The component achieves RoHS compliance, addressing regulatory requirements for new production. Tape & Reel packaging facilitates automated assembly processes.

For Cross-Manufacturer Substitution: SLF12565T-470M2R4-PF from TDK Corporation is applicable where design constraints permit parameter variations. This component offers superior current handling (2.8 A versus 1.9 A) and reduced DC resistance (69.4 mOhm versus 108.2 mOhm), resulting in lower power dissipation. Shielded construction provides electromagnetic interference mitigation in noise-sensitive applications. The expanded operating temperature range (-20°C to 105°C) accommodates extended environmental specifications. Physical footprint reduction (12.50 mm × 12.50 mm) enables space optimization in compact designs. However, SLF12565T-470M2R4-PF carries "Not For New Designs" status, limiting applicability to legacy system support or interim supply solutions.

Frequently Asked Questions (FAQ)

Q: Can UP3B-470-R be used as a direct replacement for UP3B-470?

A: Yes. UP3B-470-R is electrically and mechanically identical to UP3B-470. Both components specify 47 µH inductance, 1.9 A current rating, 108.2 mOhm maximum DC resistance, ferrite core material, unshielded construction, and identical physical dimensions. The primary differences are product status (active versus obsolete) and packaging format (Tape & Reel versus bulk). UP3B-470-R is the recommended substitute for ongoing production.

Q: What are the key differences between UP3B-470 and SLF12565T-470M2R4-PF?

A: Both components share 47 µH inductance, ±20% tolerance, 2.4 A saturation current, ferrite core material, and surface mount configuration. Differences include: current rating (1.9 A versus 2.8 A), DC resistance (108.2 mOhm versus 69.4 mOhm), shielding (unshielded versus shielded), operating temperature (-40°C to 85°C versus -20°C to 105°C), physical footprint (19.30 × 13.21 mm versus 12.50 × 12.50 mm), and inductance test frequency (100 kHz versus 1 kHz).

Q: Is SLF12565T-470M2R4-PF suitable for new design implementations?

A: SLF12565T-470M2R4-PF carries "Not For New Designs" product status. This designation indicates the manufacturer does not recommend this component for new product development. For new designs, UP3B-470-R (active status) is the appropriate selection.

Q: What is the impact of shielded versus unshielded construction?

A: Shielded inductors (SLF12565T-470M2R4-PF) reduce electromagnetic field radiation and provide immunity to external magnetic field interference. Unshielded inductors (UP3B-470, UP3B-470-R) occupy smaller physical space and exhibit lower cost. Selection depends on electromagnetic compatibility requirements within the application circuit.

Q: How do DC resistance differences affect component selection?

A: Lower DC resistance reduces power dissipation and heat generation. SLF12565T-470M2R4-PF (69.4 mOhm) dissipates less power than UP3B-470 (108.2 mOhm) at equivalent current levels. In current-limited or thermally constrained applications, the lower resistance component may provide performance advantages.

Q: Are there RoHS compliance considerations for substitution?

A: UP3B-470 is RoHS non-compliant. UP3B-470-R and SLF12565T-470M2R4-PF are RoHS compliant (RoHS and ROHS3 respectively). For applications subject to RoHS regulations, compliant alternatives are mandatory.

Q: What packaging formats are available?

A: UP3B-470 is supplied in bulk packaging. UP3B-470-R is available in Tape & Reel format, suitable for automated pick-and-place assembly. SLF12565T-470M2R4-PF is supplied in Cut Tape and Digi-Reel® formats. Packaging selection depends on manufacturing process requirements and volume specifications.