UP4T-4R7-R Equivalent & Substitute Parts

Part Overview

The UP4T-4R7-R is a 4.7 µH unshielded wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 4T series. This through-hole radial component is rated for 8.6 A continuous current with a maximum DC resistance of 11 mOhm and features a vertical cylinder package with 4 leads. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring this inductance value and current rating.

Substiute Parts

UP4T-4R7-R

Eaton - Electronics DivisionIn Stock: 917UP4T-4R7-R Datasheet

Current PartRFQ

P1252.472NLT

Pulse ElectronicsIn Stock: 1094P1252.472NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP4T-4R7-R is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance value of 4.7 µH at 100 kHz test frequency
• Tolerance of ±20%
• Continuous current rating of 8.4 A or greater
• Saturation current (Isat) of 13 A or greater
• DC resistance (DCR) not exceeding 14 mOhm maximum
• Unshielded wirewound construction

Mechanical and Environmental Criteria:

• Moisture Sensitivity Level 1 (Unlimited)
• Operating temperature range compatibility
• ECCN and HTSUS classification alignment

The substitute part P1252.472NLT from Pulse Electronics meets these electrical parameters while operating in an active product status. The primary difference is the mounting technology transition from through-hole to surface mount, which requires circuit board redesign consideration.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Through-Hole Applications):

The UP4T-4R7-R is obsolete with no direct through-hole equivalent provided in the substitute list. Applications requiring through-hole mounting must either source remaining inventory or pursue alternative design approaches.

For New Designs or Board Redesign Scenarios:

The P1252.472NLT from Pulse Electronics serves as a functional electrical equivalent for applications that can accommodate surface-mount technology. This substitute maintains the 4.7 µH inductance specification and ±20% tolerance while delivering 8.4 A continuous current and 13 A saturation current. The DC resistance of 14 mOhm maximum is within acceptable limits for most applications, though represents a 27% increase over the original 11 mOhm specification.

Compliance Advantages:

The P1252.472NLT is an active product with ROHS3 compliance and REACH unaffected status, providing supply chain continuity and regulatory alignment for modern manufacturing environments. The specified operating temperature range of -40°C to 130°C accommodates standard industrial and commercial applications.

Critical Consideration:

The transition from through-hole to surface-mount packaging requires circuit board layout modification. The P1252.472NLT footprint dimensions (22.33 mm L × 15.14 mm W × 7.49 mm H) differ significantly from the original radial vertical cylinder package (17.00 mm diameter × 13.15 mm height).

Frequently Asked Questions (FAQ)

Q: Can the P1252.472NLT directly replace the UP4T-4R7-R in existing through-hole circuit boards?

A: No. The P1252.472NLT is a surface-mount component, while the UP4T-4R7-R is through-hole. Direct board-level substitution is not possible without circuit board redesign and rework.

Q: What is the impact of the 3 mOhm increase in DC resistance (11 mOhm to 14 mOhm)?

A: The P1252.472NLT exhibits 27% higher DC resistance. In applications where inductor losses directly impact thermal performance or efficiency, this parameter difference must be evaluated against system requirements. The 8.4 A continuous current rating of the substitute remains suitable for most applications originally designed for 8.6 A.

Q: Are the inductance values and tolerances identical between these parts?

A: Yes. Both components are specified at 4.7 µH with ±20% tolerance, measured at 100 kHz. Electrical inductance characteristics are equivalent.

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

A: The UP4T-4R7-R saturates at 15.6 A, while the P1252.472NLT saturates at 13 A. This 2.6 A difference represents a 17% reduction in saturation headroom. Applications operating near saturation limits must account for this specification change.

Q: Is the P1252.472NLT suitable for high-temperature applications?

A: The P1252.472NLT is rated for -40°C to 130°C operation. The original UP4T-4R7-R operating temperature range is not specified in available documentation. Confirm application temperature requirements against the stated range.

Q: What are the moisture sensitivity implications?

A: Both components carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions. Storage and handling requirements are equivalent.

Q: Does the P1252.472NLT carry modern regulatory certifications?

A: Yes. The P1252.472NLT is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronics manufacturing and distribution in regulated markets.