UP0.4UC-680-R Equivalent & Substitute Parts

Part Overview

The UP0.4UC-680-R is a 68 µH unshielded wirewound inductor manufactured by Eaton - Electronics Division, part of the UNI-PAC™ 0.4UC series. This surface mount component is rated for 400 mA continuous current with a maximum DC resistance of 860 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 minimal moisture sensitivity. This inductor is currently in active production status with 724 pieces available in stock.

Equivalent and substitute parts are identified to provide design flexibility when the primary part becomes unavailable, when supply chain optimization is required, or when alternative sourcing improves cost efficiency while maintaining electrical and mechanical compatibility.

Substiute Parts

UP0.4UC-680-R

Eaton - Electronics DivisionIn Stock: 782UP0.4UC-680-R Datasheet

Current PartRFQ

74455168

Würth ElektronikIn Stock: 119474455168 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UP0.4UC-680-R are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Primary Matching Parameters:

• Inductance value: 68 µH
• Inductance tolerance: ±20%
• Current rating: 400 mA minimum
• Current saturation (Isat): 400 mA minimum
• DC resistance (DCR): 860 mOhm maximum
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Physical footprint: 6.60 mm × 4.45 mm (length × width)
• Height seated maximum: 2.92 mm
• Inductance test frequency: 100 kHz

Compliance Parameters:

• RoHS compliance status (RoHS Compliant or equivalent)
• Moisture Sensitivity Level: 1 (Unlimited)
• Packaging: Tape & Reel (TR)

Substitute parts must satisfy all primary matching parameters within the specified tolerances and maintain equivalent or superior compliance certifications. Parts are grouped only when these criteria are fully met.

Parameter Comparison

Engineering Selection Recommendations

UP0.4UC-680-R (Eaton - Electronics Division)

The UP0.4UC-680-R remains the primary component specification. It is in active production status with confirmed inventory of 724 pieces. The component carries RoHS Compliant certification and MSL 1 rating. The operating temperature range of -25°C to 85°C is suitable for standard industrial and commercial applications.

74455168 (Würth Elektronik) - Qualified Substitute

The 74455168 is a qualified substitute for the UP0.4UC-680-R. All critical electrical parameters match exactly: 68 µH inductance at ±20% tolerance, 400 mA current rating, 400 mA saturation current, and 860 mOhm maximum DC resistance. Physical dimensions and mounting characteristics are identical. Both components are unshielded surface mount inductors tested at 100 kHz.

The 74455168 offers an extended operating temperature range of -40°C to 100°C compared to the primary part's -25°C to 85°C range. The component is ROHS3 Compliant, meeting current regulatory requirements. Inventory availability is higher at 1124 pieces.

The 74455168 uses a ferrite drum core construction versus the unspecified core material of the primary part. Both components are wirewound inductors with identical electrical performance at the specified test frequency. The self-resonant frequency differs (9.5 MHz versus 11 MHz), which is a secondary parameter not affecting substitution eligibility for standard DC-biased inductor applications.

Selection between these parts should be based on supply chain availability, lead time requirements, and application-specific temperature operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the 74455168 be used as a direct replacement for the UP0.4UC-680-R in all applications?

A: The 74455168 meets all critical electrical and mechanical parameters required for substitution. Both components deliver 68 µH inductance at ±20% tolerance, support 400 mA current, and maintain 860 mOhm maximum DC resistance. Physical footprints are identical at 6.60 mm × 4.45 mm with 2.92 mm maximum seated height. Direct replacement is supported for applications operating within the UP0.4UC-680-R temperature range of -25°C to 85°C. Applications requiring operation below -25°C or above 85°C may benefit from the 74455168's extended -40°C to 100°C range.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Manufacturer and series designation (Eaton UNI-PAC™ 0.4UC versus Würth Elektronik WE-PD4); (2) Core material specification (Würth specifies ferrite drum core; Eaton core material is not specified); (3) Operating temperature range (Eaton -25°C to 85°C; Würth -40°C to 100°C); (4) Self-resonant frequency (Eaton 11 MHz; Würth 9.5 MHz); (5) RoHS certification version (Eaton RoHS Compliant; Würth ROHS3 Compliant). All electrical performance parameters at 100 kHz test frequency are identical.

Q: Are there any compliance or certification differences?

A: Both components are RoHS compliant. The 74455168 carries ROHS3 Compliant certification, representing the current regulatory standard. The UP0.4UC-680-R is RoHS Compliant. Both components carry MSL 1 (Unlimited) moisture sensitivity rating and are packaged in Tape & Reel format. Both are EAR99 export classification and 8504.50.4000 HTSUS code.

Q: Does the difference in self-resonant frequency affect substitution?

A: Self-resonant frequency is a secondary parameter. The UP0.4UC-680-R has 11 MHz self-resonant frequency; the 74455168 has 9.5 MHz. For standard DC-biased inductor applications and low-frequency AC circuits operating well below these frequencies, this difference does not affect functional substitution. Applications involving high-frequency operation near or above 5 MHz should evaluate this parameter against specific circuit requirements.

Q: Can I use the 74455168 in applications requiring operation below -25°C?

A: Yes. The 74455168 is rated for -40°C to 100°C operating temperature, extending the lower temperature limit by 15°C compared to the UP0.4UC-680-R (-25°C to 85°C). For applications requiring operation at -30°C or lower, the 74455168 is the appropriate selection.

Q: Are the physical dimensions truly identical?

A: Yes. Both components have identical physical dimensions: 6.60 mm length × 4.45 mm width with 2.92 mm maximum seated height. PCB footprint and assembly compatibility are identical. Both are surface mount components in nonstandard package configuration.

Q: What is the inventory status for each part?

A: The UP0.4UC-680-R has 724 pieces in stock. The 74455168 has 1124 pieces in stock. Both are listed as active products with confirmed new original inventory.