74457147 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74457147 is a 47 µH unshielded drum core wirewound inductor rated for 2.8 A continuous current with a maximum DC resistance of 109 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is part of the WE-PD4 series. The part is currently active in production and ROHS3 compliant. Equivalent parts are identified when alternative manufacturers offer inductors with matching electrical specifications and identical mechanical form factors, enabling direct substitution in applications where component availability or supply chain considerations necessitate alternative sourcing.

Substiute Parts

74457147

Würth ElektronikIn Stock: 386374457147 Datasheet

Current PartRFQ

SDR2207-470KL

Bourns Inc.In Stock: 3002SDR2207-470KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74457147 is determined by strict equivalence across the following critical parameters:

Inductance value must match at 47 µH with ±10% tolerance. Current rating must be rated for minimum 2.8 A continuous operation. DC resistance must not exceed 109 mOhm maximum to maintain circuit performance within design specifications. Core material must be ferrite with unshielded configuration. Operating temperature range must span -40°C to 125°C. Package dimensions must be identical at 22.00 mm × 15.00 mm × 7.80 mm maximum height to ensure mechanical compatibility in surface mount applications. Saturation current must meet or exceed 5 A. Self resonant frequency must be within the specified range. Mounting type must be surface mount. RoHS3 compliance and MSL 1 rating are required for regulatory and environmental compatibility.

The Bourns Inc. SDR2207-470KL meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 74457147 and SDR2207-470KL are active production components with ROHS3 compliance and identical regulatory status under REACH and EAR99 classifications. The SDR2207-470KL offers a lower maximum DC resistance of 91.2 mOhm compared to the 74457147 specification of 109 mOhm, which represents improved electrical efficiency within the same current and inductance ratings. Both components meet all mechanical, thermal, and environmental requirements for direct substitution. Selection between these parts should be based on supply chain availability and lead time considerations, as electrical performance is equivalent or superior in the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-470KL replace the 74457147 in existing designs?

A: Yes. The SDR2207-470KL is a direct equivalent meeting all electrical and mechanical specifications. Identical inductance, current rating, saturation current, operating temperature range, and package dimensions enable direct substitution without circuit redesign.

Q: What is the significance of the lower DC resistance in the SDR2207-470KL?

A: The SDR2207-470KL maximum DC resistance of 91.2 mOhm is lower than the 74457147 specification of 109 mOhm. This represents improved efficiency and reduced power dissipation in the inductor, which is beneficial for circuit performance. The substitute part remains within all design specifications.

Q: Are both parts available in the same packaging format?

A: Yes. Both the 74457147 and SDR2207-470KL are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes. Physical dimensions are identical at 22.00 mm × 15.00 mm × 7.80 mm maximum height.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8504.50.4000. Regulatory and environmental compliance is identical.

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

A: The 74457147 has a self-resonant frequency of 9.2 MHz while the SDR2207-470KL is specified at 9 MHz. Both values are within acceptable operating ranges for 47 µH inductors at 100 kHz test frequency and do not impact substitution eligibility.