Würth Elektronik 7447471104 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447471104 is a 100 mH shielded drum core wirewound inductor rated for 50 mA maximum current with 140 Ohm maximum DC resistance. This through-hole component operates across -40°C to 125°C and is designed for applications requiring electromagnetic shielding in compact radial configurations.

The 7447471104 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

7447471104

Würth ElektronikIn Stock: 7127447471104 Datasheet

Current PartRFQ

19R107C

Murata Power Solutions Inc.In Stock: 338319R107C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7447471104 is determined by the following critical parameters:

• Inductance Value: Must be 100 mH ±10%
• Current Rating: Substitute must support minimum 50 mA operation
• DC Resistance: Must not exceed 140 Ohm maximum
• Mounting Configuration: Through-hole radial, vertical cylinder package required
• Tolerance: ±10% inductance tolerance acceptable
• Compliance: RoHS3 compliance required

The Murata Power Solutions Inc. 19R107C meets the core electrical specifications for inductance, current rating, and DC resistance. However, this substitute differs in shielding configuration and operating temperature range, which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The Murata 19R107C is an active product with superior current rating (70 mA vs. 50 mA) and lower DC resistance (90 Ohm vs. 140 Ohm maximum). Both components maintain RoHS3 and REACH compliance.

Critical differences exist in shielding and temperature rating. The 19R107C is unshielded, whereas the 7447471104 provides electromagnetic shielding. Applications requiring EMI suppression or operating in electromagnetically sensitive environments must account for this difference. The 19R107C maximum operating temperature is 95°C, compared to 125°C for the original component. Applications requiring operation above 95°C cannot use this substitute.

Frequently Asked Questions (FAQ)

Q: Can the Murata 19R107C directly replace the Würth Elektronik 7447471104?

A: Direct replacement is possible only if the application does not require electromagnetic shielding and operates within the -40°C to 95°C temperature range. The 19R107C provides superior electrical performance in current rating and DC resistance.

Q: What is the impact of the shielding difference?

A: The 7447471104 includes shielding to reduce electromagnetic interference. The 19R107C is unshielded. Applications sensitive to EMI or operating in electromagnetically noisy environments may experience performance degradation with the unshielded substitute.

Q: Are both components through-hole mounted?

A: Yes. Both the 7447471104 and 19R107C use through-hole mounting with radial, vertical cylinder package configurations, ensuring mechanical compatibility in PCB layouts.

Q: What compliance certifications apply to both parts?

A: Both components are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: Does the lower DC resistance of the 19R107C affect circuit performance?

A: Lower DC resistance (90 Ohm vs. 140 Ohm maximum) reduces resistive losses and heat generation. This is generally beneficial for circuit efficiency and thermal management.