UP4B-4R7-R Equivalent & Substitute Parts

Part Overview

The UP4B-4R7-R is a 4.7 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 8.6 A continuous current with a maximum DC resistance of 833mOhm and operates across the temperature range of -40°C to 85°C. The part is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating suitability for standard storage and handling conditions.

The UP4B-4R7-R maintains Active product status with 1174 pieces currently in stock. Equivalent and substitute parts are identified based on matching inductance value, current rating compatibility, core material, shielding configuration, and surface mount packaging specifications.

Substiute Parts

UP4B-4R7-R

Eaton - Electronics DivisionIn Stock: 1213UP4B-4R7-R Datasheet

Current PartRFQ

SDR2207-4R7ML

Bourns Inc.In Stock: 20596SDR2207-4R7ML Datasheet

DirectRFQ

P1252.472NL

Pulse ElectronicsIn Stock: 2771P1252.472NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP4B-4R7-R are classified based on the following substitution criteria:

Direct Substitutes maintain electrical and mechanical compatibility within the allowed parameter ranges:

• Inductance value of 4.7 µH at ±20% tolerance
• Current rating within 8.4 A to 8.6 A range
• Unshielded ferrite or equivalent core construction
• Surface mount nonstandard package configuration
• DC resistance values that do not exceed the thermal and performance limits of the application
• Operating temperature range that encompasses or exceeds -40°C to 85°C
• RoHS and MSL compliance matching or exceeding the original specification

Similar Substitutes meet the core electrical requirements but may present minor variations in DC resistance, saturation current, or dimensional tolerances that remain within acceptable engineering margins for the 4.7 µH inductance category.

Parameter Comparison

Engineering Selection Recommendations

SDR2207-4R7ML (Bourns Inc.) qualifies as a direct substitute for the UP4B-4R7-R. This part maintains the 4.7 µH inductance specification with ±20% tolerance and delivers 8.5 A continuous current rating, which is within 0.1 A of the original specification. The SDR2207-4R7ML exhibits significantly lower DC resistance (8.8mOhm Max versus 833mOhm Max), resulting in reduced thermal dissipation and improved efficiency in the application circuit. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin beyond the original -40°C to 85°C specification. Both parts carry ROHS3 compliance and MSL 1 rating. Dimensional compatibility is confirmed with negligible variations in length, width, and height. The SDR2207 series is actively produced with 20490 pieces in stock.

P1252.472NL (Pulse Electronics) functions as a similar substitute with the same 4.7 µH inductance and ±20% tolerance. The current rating of 8.4 A is 0.2 A below the original specification, and the saturation current of 13 A is 2.6 A lower than the UP4B-4R7-R. DC resistance is specified at 14mOhm Max, which is substantially lower than the original part. The operating temperature range extends to -40°C to 130°C, exceeding the original specification. ROHS3 compliance and MSL 1 rating are confirmed. Dimensional variations remain within acceptable tolerances for surface mount applications. The P1252NL series is actively produced with 2737 pieces in stock.

Selection between these substitutes depends on application-specific requirements regarding current headroom, thermal performance, and temperature operating margin. Both substitutes maintain full compliance with RoHS and moisture sensitivity standards.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-4R7ML replace the UP4B-4R7-R in all applications?

A: The SDR2207-4R7ML meets the core electrical specifications for 4.7 µH inductance with ±20% tolerance and 8.5 A current rating. The 0.1 A difference in current rating falls within typical design margins. The significantly lower DC resistance (8.8mOhm versus 833mOhm) reduces power dissipation. Dimensional compatibility is confirmed. Substitution is valid for applications where the original thermal and current specifications are met.

Q: What is the significance of the DC resistance difference between these parts?

A: DC resistance directly affects power dissipation and thermal performance. The UP4B-4R7-R specifies 833mOhm Max, while the SDR2207-4R7ML specifies 8.8mOhm Max and the P1252.472NL specifies 14mOhm Max. Lower DC resistance reduces I²R losses, resulting in cooler operation and improved efficiency. Applications sensitive to thermal dissipation benefit from the lower resistance values of the substitute parts.

Q: Are there packaging or mounting differences between these parts?

A: All three parts are surface mount components in nonstandard package configurations. Dimensional variations are minimal: length ranges from 22.00mm to 22.33mm, width from 15.00mm to 15.14mm, and height from 7.49mm to 7.87mm. These variations are within standard PCB layout tolerances for surface mount assembly. No special mounting modifications are required.

Q: Which substitute part offers the best thermal performance?

A: The P1252.472NL provides the lowest height (7.49mm) and the SDR2207-4R7ML provides the lowest DC resistance (8.8mOhm). For thermal performance, lower DC resistance is the primary factor. The SDR2207-4R7ML delivers superior thermal characteristics due to its 8.8mOhm specification compared to the original 833mOhm.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. The UP4B-4R7-R is RoHS Compliant. The SDR2207-4R7ML and P1252.472NL are both ROHS3 Compliant, which represents an updated and more stringent compliance standard. All parts carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the saturation current significance in selecting a substitute?

A: Saturation current (Isat) defines the maximum current before the inductor enters saturation and loses inductance. The UP4B-4R7-R specifies 15.6 A Isat, the SDR2207-4R7ML specifies 15 A, and the P1252.472NL specifies 13 A. For applications requiring current transients or peak currents approaching saturation limits, the UP4B-4R7-R or SDR2207-4R7ML provide greater margin. The P1252.472NL is suitable for applications with lower peak current requirements.

Q: Can the P1252.472NL be used if the application requires 8.6 A continuous current?

A: The P1252.472NL is rated for 8.4 A continuous current, which is 0.2 A below the original 8.6 A specification. This represents a 2.3% reduction in current capacity. Substitution is valid only if the actual application current requirement does not exceed 8.4 A or if design margins permit operation at the lower rating.