UP0.4UC-100-R Equivalent & Substitute Parts

Part Overview

The UP0.4UC-100-R is a 10 µH unshielded wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 0.4UC series. This surface mount component is rated for 1.1 A continuous current with a maximum DC resistance of 160 mOhm and operates across the temperature range of -25°C to 85°C. The component is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

The UP0.4UC-100-R is currently in Active product status with 763 pieces available in new original inventory. Equivalent substitute parts are identified based on matching critical electrical parameters: inductance value, current rating, DC resistance, package dimensions, and mounting type. Substitutes must maintain functional compatibility within the specified operating conditions.

Substiute Parts

UP0.4UC-100-R

Eaton - Electronics DivisionIn Stock: 839UP0.4UC-100-R Datasheet

Current PartRFQ

7445510

Würth ElektronikIn Stock: 33787445510 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP0.4UC-100-R are identified based on strict equivalence of the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH
• Inductance tolerance: ±20%
• DC resistance: 160 mOhm Max
• Mounting type: Surface Mount
• Package dimensions: 0.260" L x 0.175" W (6.60mm x 4.45mm)
• Height - Seated (Max): 0.115" (2.92mm)
• Shielding configuration: Unshielded

Secondary Compatibility Factors:

• Current rating: minimum 1.1 A
• Operating temperature range: must encompass or exceed -25°C ~ 85°C
• RoHS compliance status
• MSL rating: 1 (Unlimited)

The substitute part 7445510 (Würth Elektronik WE-PD4 series) meets all primary matching criteria with identical inductance, tolerance, DC resistance, and physical dimensions. The substitute demonstrates enhanced current rating (1.2 A vs. 1.1 A) and extended operating temperature range (-40°C ~ 100°C vs. -25°C ~ 85°C), providing additional design margin. Both components are surface mount, unshielded wirewound inductors tested at 100 kHz.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: UP0.4UC-100-R

The UP0.4UC-100-R remains the specified component when design requirements explicitly call for the Eaton UNI-PAC™ 0.4UC series or when the 35 MHz self-resonant frequency is a critical design parameter. The component is Active in product status with established supply availability (763 pieces in stock). RoHS Compliance and MSL 1 rating support standard manufacturing and storage protocols.

Substitute Part: 7445510 (Würth Elektronik WE-PD4)

The 7445510 is a direct functional substitute when the primary part is unavailable or when extended operating temperature range (-40°C ~ 100°C) and higher current margin (1.2 A) provide design advantages. The substitute maintains identical inductance, tolerance, DC resistance, and physical footprint, ensuring PCB layout compatibility without redesign. Both components carry current RoHS compliance certifications (RoHS Compliant vs. ROHS3 Compliant) and unlimited MSL ratings.

The lower self-resonant frequency of the substitute (26 MHz vs. 35 MHz) must be evaluated against circuit frequency response requirements. For applications operating below 26 MHz, this difference is not functionally significant. For high-frequency circuits approaching or exceeding 26 MHz, the primary part's higher self-resonant frequency may be preferred.

Compliance & Certification:

Both components are RoHS compliant and carry MSL 1 (Unlimited) ratings, supporting standard surface mount assembly processes without special moisture control measures. The substitute's ROHS3 designation indicates compliance with the most current RoHS directive iteration.

Frequently Asked Questions (FAQ)

Q: Can the 7445510 be used as a direct replacement for UP0.4UC-100-R on existing PCBs?

A: Yes. Both components share identical physical dimensions (0.260" L x 0.175" W x 0.115" H max), identical inductance (10 µH ±20%), identical DC resistance (160 mOhm Max), and identical mounting type (Surface Mount). No PCB layout modifications are required. The substitute can be soldered into existing footprints without mechanical or electrical redesign.

Q: What is the difference in self-resonant frequency between these parts?

A: The UP0.4UC-100-R has a self-resonant frequency of 35 MHz, while the 7445510 has 26 MHz. This difference reflects different core materials and winding configurations. For circuits operating below 26 MHz, this difference has no practical impact. For applications requiring operation near or above 26 MHz, the primary part's higher self-resonant frequency may provide better high-frequency performance.

Q: Are both parts suitable for the same temperature range?

A: The UP0.4UC-100-R operates from -25°C to 85°C. The 7445510 operates from -40°C to 100°C. The substitute provides extended temperature coverage at both extremes. If your application requires operation below -25°C or above 85°C, the substitute is necessary. For applications within -25°C to 85°C, both parts are suitable.

Q: Does the higher current rating of the 7445510 (1.2 A vs. 1.1 A) affect compatibility?

A: No. A higher current rating provides additional design margin and does not create compatibility issues. If your circuit draws 1.1 A or less, both parts operate safely. The substitute's 1.2 A rating simply provides additional headroom.

Q: Are there any RoHS compliance differences between these parts?

A: Both parts are RoHS compliant. The UP0.4UC-100-R carries RoHS Compliant status, while the 7445510 carries ROHS3 Compliant status. ROHS3 represents the current RoHS directive iteration. Both are acceptable for standard manufacturing environments. No compliance issues exist with either part.

Q: What is the MSL rating, and why does it matter?

A: Both parts carry MSL 1 (Unlimited), meaning they have unlimited shelf life and require no special moisture control during storage or handling. Standard manufacturing processes and storage conditions are appropriate for both components. No desiccant storage or baking procedures are required.

Q: Can I use the 7445510 if the primary part is backordered?

A: Yes, provided your circuit design does not have specific frequency response requirements above 26 MHz. The substitute meets all primary electrical and mechanical specifications. Verify that your application's operating temperature range does not exceed -40°C to 100°C (the substitute's range), and confirm that the lower self-resonant frequency does not impact circuit performance. If these conditions are met, the substitute is a valid alternative.

Q: What is the difference between "Wirewound" and "Drum Core, Wirewound"?

A: Both are wirewound inductors. The 7445510 uses a drum core (ferrite material) as the winding substrate, while the UP0.4UC-100-R uses a standard wirewound construction. Both achieve the same inductance value and DC resistance. The drum core design in the substitute may provide improved thermal characteristics and mechanical stability, but both designs are functionally equivalent for this application.