Murata Power Solutions 82473C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 82473C is a 47 µH unshielded wirewound inductor rated for 250 mA with a maximum DC resistance of 1.69Ohm in a 1210 (3225 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

82473C

Murata Power Solutions Inc.In Stock: 214582473C Datasheet

Current PartRFQ

SDR0302-470KL

Bourns Inc.In Stock: 4542SDR0302-470KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 82473C is determined by the following critical parameters:

• Inductance value of 47 µH with ±10% tolerance
• Unshielded configuration
• Surface mount technology
• Current rating equal to or greater than 250 mA
• DC resistance within acceptable limits for the application
• ROHS3 compliance and equivalent environmental ratings
• Operating temperature range compatibility

The Bourns SDR0302-470KL meets these substitution criteria with a 47 µH inductance, 360 mA current rating (exceeding the 250 mA requirement), and 1.27Ohm maximum DC resistance. Both parts maintain unshielded construction and surface mount configuration with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The Bourns SDR0302-470KL is a qualified substitute for the Murata 82473C based on the following engineering criteria:

• Both parts maintain identical 47 µH inductance with ±10% tolerance specification
• The SDR0302-470KL current rating of 360 mA exceeds the 250 mA requirement, providing operational margin
• DC resistance of 1.27Ohm in the substitute is lower than the 1.69Ohm maximum of the original, reducing power dissipation
• Self-resonant frequency matches at 17MHz for both parts
• Extended operating temperature range of -40°C ~ 125°C in the substitute accommodates applications requiring higher thermal performance
• Both components maintain ROHS3 compliance and equivalent environmental certifications (REACH Unaffected, EAR99 ECCN classification)
• Surface mount configuration and unshielded construction are identical

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0302-470KL be used as a direct replacement for the Murata 82473C?

A: Yes. Both parts share the same 47 µH inductance value, ±10% tolerance, unshielded configuration, and surface mount technology. The substitute provides equal or superior electrical performance with higher current rating and lower DC resistance.

Q: What are the package differences between these parts?

A: The Murata 82473C uses a standard 1210 (3225 Metric) package measuring 0.126" L x 0.098" W with 0.091" maximum seated height. The Bourns SDR0302-470KL uses a nonstandard package measuring 0.118" L x 0.110" W with 0.110" maximum seated height. Physical dimensions differ slightly; PCB layout verification is required for mechanical fit confirmation.

Q: Are there temperature rating differences that affect substitution?

A: The Murata 82473C operates from -40°C to 85°C, while the Bourns SDR0302-470KL operates from -40°C to 125°C. The substitute provides extended high-temperature capability. For applications within the original -40°C to 85°C range, both parts are equivalent.

Q: How do the DC resistance values compare?

A: The Murata 82473C specifies 1.69Ohm maximum DC resistance, while the Bourns SDR0302-470KL specifies 1.27Ohm maximum. The lower resistance in the substitute reduces resistive losses and heat generation in the inductor.

Q: What is the current rating difference and does it matter?

A: The Murata 82473C is rated for 250 mA, while the Bourns SDR0302-470KL is rated for 360 mA with 400mA saturation current. The higher rating in the substitute provides additional current handling capacity and operational margin for the same 47 µH inductance value.