Murata Power Solutions 35801C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 35801C is a fixed unshielded wirewound inductor with 800 nH inductance and 9.5 A current rating, designed for surface mount applications. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The 35801C operates across the -40°C to 125°C temperature range with a maximum DC resistance of 10 mOhm and ±25% inductance tolerance.

Substiute Parts

35801C

Murata Power Solutions Inc.In Stock: 107135801C Datasheet

Current PartRFQ

SRP7028A-R82M

Bourns Inc.In Stock: 2953SRP7028A-R82M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 35801C is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance value within acceptable tolerance band (800 nH nominal)
• Current rating equal to or greater than 9.5 A
• DC resistance at or below 10 mOhm maximum
• Operating temperature range covering -40°C to 125°C minimum

Mechanical Compatibility Criteria:

• Surface mount configuration
• Physical dimensions compatible with 6.80mm x 6.80mm footprint and 3.20mm maximum height
• Nonstandard package classification

The Bourns SRP7028A-R82M qualifies as a manufacturer-recommended substitute based on these parameters. The substitute maintains wirewound construction, exceeds current rating requirements (13 A vs. 9.5 A), and operates within the required temperature range (-40°C to 150°C). The inductance value of 820 nH represents a 2.5% deviation from the 800 nH nominal, which falls within acceptable tolerance margins for this application category.

Parameter Comparison

Engineering Selection Recommendations

The SRP7028A-R82M is the manufacturer-recommended substitute for the obsolete 35801C. Selection of this substitute is supported by the following factors:

Product Status: The 35801C is obsolete, while the SRP7028A-R82M maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance & Certifications: The SRP7028A-R82M carries AEC-Q200 qualification and ROHS3 compliance, providing enhanced reliability documentation compared to the original part. Both components are REACH Unaffected and classified under ECCN EAR99.

Electrical Performance: The substitute exceeds the original current rating (13 A vs. 9.5 A) and provides superior DC resistance (8 mOhm vs. 10 mOhm maximum). The inductance deviation of 20 nH (2.5%) is within acceptable tolerance margins for this component category.

Mechanical Fit: Physical dimensions are comparable, with the substitute measuring 7.30mm x 6.60mm x 3.00mm maximum height versus the original 6.80mm x 6.80mm x 3.20mm. Both maintain surface mount configuration and nonstandard package classification.

Thermal Performance: The substitute extends the operating temperature range to 150°C, providing additional thermal margin beyond the original -40°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q: Can the SRP7028A-R82M directly replace the 35801C in existing designs?

A: The SRP7028A-R82M is electrically compatible as a substitute. The inductance values (800 nH vs. 820 nH) differ by 2.5%, which is within acceptable tolerance for this component category. Physical dimensions are comparable but not identical; PCB layout verification is necessary to confirm mechanical fit within the available space.

Q: What is the significance of the shielding difference between these parts?

A: The 35801C is unshielded, while the SRP7028A-R82M is shielded with drum core construction. Shielding reduces electromagnetic interference emission and susceptibility. This difference may affect circuit performance in noise-sensitive applications; circuit validation is recommended for critical applications.

Q: Why does the substitute have a higher current rating?

A: The SRP7028A-R82M is rated for 13 A continuous current versus the 35801C's 9.5 A rating. This higher rating reflects the substitute's drum core construction and improved thermal characteristics. The substitute will operate cooler at the original design current, extending component life.

Q: Are there packaging differences between these inductors?

A: Both components use nonstandard packages and surface mount configuration. The SRP7028A-R82M is supplied in Tape & Reel (TR) packaging, while the 35801C packaging format is not specified. Verify reel compatibility with your assembly equipment.

Q: What compliance certifications apply to the substitute?

A: The SRP7028A-R82M carries AEC-Q200 automotive qualification and ROHS3 compliance. Both components are REACH Unaffected and classified as EAR99 for export purposes.