Murata Power Solutions 49100SC Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 49100SC is a 10 µH shielded wirewound inductor rated for 5.1 A continuous current with a maximum DC resistance of 21 mOhm. This surface mount component operates across the -40°C to 85°C temperature range and is classified as Active product status. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application parameters within the allowable electrical and mechanical specifications for this inductor category.

Substiute Parts

49100SC

Murata Power Solutions Inc.In Stock: 119749100SC Datasheet

Current PartRFQ

SRR1280-100M

Bourns Inc.In Stock: 1830SRR1280-100M Datasheet

DirectRFQ

BPSC00131380100M00

Pulse ElectronicsIn Stock: 6558BPSC00131380100M00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 49100SC are qualified based on the following critical parameters:

• Inductance Value: 10 µH (±20% tolerance maintained across all substitutes)
• Current Rating: Minimum 5.1 A continuous current capability
• DC Resistance: Maximum 21 mOhm to ensure equivalent power dissipation characteristics
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Package Dimensions: Physical footprint compatibility within 12.20mm x 12.20mm to 12.50mm x 12.50mm range and 8.00mm maximum height
• Operating Temperature: Minimum -40°C to 85°C range
• Compliance: ROHS3 compliant, MSL 1 rating

The Bourns SRR1280-100M and Pulse Electronics BPSC00131380100M00 meet these substitution criteria with equivalent inductance, shielding, surface mount configuration, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All three inductors—the Murata 49100SC, Bourns SRR1280-100M, and Pulse Electronics BPSC00131380100M00—maintain Active product status and ROHS3 compliance with MSL 1 ratings. The Bourns SRR1280-100M provides a current rating of 6 A, exceeding the 5.1 A requirement, with lower DC resistance of 19.5 mOhm and an extended operating temperature range to 125°C. The Pulse Electronics BPSC00131380100M00 maintains the 22 mOhm maximum DC resistance specification and operates to 105°C. Physical dimensions across all three parts remain compatible within the nonstandard 4-lead surface mount package category, with height specifications uniform at 0.315" (8.00mm) maximum. Selection among these parts should be based on availability, lead time, and specific application thermal requirements within the stated operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1280-100M be used as a direct replacement for the Murata 49100SC?

A: Yes. Both components share the same 10 µH inductance value with ±20% tolerance, shielded construction, surface mount configuration, and compatible physical dimensions. The Bourns part provides higher current rating (6 A vs. 5.1 A) and lower DC resistance (19.5 mOhm vs. 21 mOhm), making it functionally equivalent for applications within the 49100SC specifications.

Q: What are the physical compatibility considerations between these parts?

A: The Murata 49100SC measures 0.480" x 0.480" (12.20mm x 12.20mm), while both the Bourns SRR1280-100M and Pulse Electronics BPSC00131380100M00 measure 0.492" x 0.492" (12.50mm x 12.50mm). All three maintain identical maximum height of 0.315" (8.00mm). PCB layout should accommodate the slightly larger footprint of the Bourns and Pulse parts.

Q: Are there DC resistance differences that affect circuit performance?

A: The Murata 49100SC specifies 21 mOhm maximum DCR, the Bourns SRR1280-100M specifies 19.5 mOhm maximum, and the Pulse Electronics BPSC00131380100M00 specifies 22 mOhm maximum. These variations fall within acceptable ranges for equivalent substitution and represent typical manufacturing tolerances for this inductor category.

Q: Do all three parts meet the same compliance and environmental standards?

A: Yes. All three inductors are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. Operating temperature ranges differ: Murata operates -40°C to 85°C, Bourns operates -40°C to 125°C, and Pulse operates -40°C to 105°C. Selection should align with specific application thermal requirements.

Q: What is the inductance tolerance specification across all substitute parts?

A: All three parts maintain ±20% inductance tolerance, ensuring consistent performance across the 10 µH nominal value within the allowable deviation range.