47101C Equivalent & Substitute Parts

Part Overview

The 47101C is a fixed wirewound inductor manufactured by Murata Power Solutions Inc., rated at 100 µH inductance with a maximum current rating of 1.01 A and DC resistance of 686mOhm. This shielded surface mount component operates across the temperature range of -40°C to 85°C and is classified as Active product status with full RoHS3 compliance. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or performance optimization within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	47101C
Manufacturer	Murata Power Solutions Inc.
Inductance	100 µH
Current Rating	1.01 A
DC Resistance (DCR)	686mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Package Type	Nonstandard, 4 Lead
Size	0.480" L x 0.480" W (12.20mm x 12.20mm)
Height - Seated (Max)	0.197" (5.00mm)
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 47101C is determined by the following critical parameters:

Inductance Value: 100 µH (primary electrical specification)
Current Rating: Minimum 1.01 A required for parallel operation or equivalent current handling
DC Resistance: Maximum 686mOhm for series operation; lower values acceptable for parallel configurations
Shielding: Shielded construction required
Mounting Type: Surface mount configuration
Operating Temperature Range: Minimum -40°C ~ 85°C coverage
Package Compatibility: Nonstandard, 4 Lead surface mount package

The SRF1260-101M from Bourns Inc. qualifies as a substitute when configured in parallel mode, providing 100 µH inductance with 1.78 A current rating and 171mOhm DCR in parallel configuration. This component maintains shielded construction, surface mount compatibility, and extended operating temperature range of -40°C ~ 125°C.

Parameter Comparison

Parameter	47101C (Murata)	SRF1260-101M (Bourns)	Notes
Inductance	100 µH	100 µH (Parallel)	Matched specification
Current Rating	1.01 A	1.78 A (Parallel)	Substitute exceeds requirement
DC Resistance (DCR)	686mOhm Max	171mOhm Max (Parallel)	Substitute provides lower resistance
Shielding	Shielded	Shielded	Matched specification
Mounting Type	Surface Mount	Surface Mount	Matched specification
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	Substitute provides extended range
Package Type	Nonstandard, 4 Lead	Nonstandard	Both surface mount configurations
Size	0.480" L x 0.480" W (12.20mm x 12.20mm)	0.492" L x 0.492" W (12.50mm x 12.50mm)	Dimensions within comparable range
Height - Seated (Max)	0.197" (5.00mm)	0.244" (6.20mm)	Substitute height slightly elevated
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched specification
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Matched specification

Engineering Selection Recommendations

Both the 47101C and SRF1260-101M maintain Active product status with full RoHS3 compliance and REACH unaffected classification. The 47101C remains the primary component for applications requiring the specified -40°C ~ 85°C operating range and compact 5.00mm seated height. The SRF1260-101M serves as a qualified substitute when extended operating temperature capability (-40°C ~ 125°C) is beneficial and the marginal increase in package dimensions (0.492" x 0.492" x 0.244") is accommodated within the design envelope. Both components are shielded surface mount inductors with unlimited moisture sensitivity rating, suitable for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SRF1260-101M directly replace the 47101C in all applications?

A: The SRF1260-101M provides electrical equivalence when configured in parallel mode, matching the 100 µH inductance and exceeding the 1.01 A current requirement. Physical dimensions differ slightly (0.492" vs 0.480" length/width, 0.244" vs 0.197" height), requiring verification of PCB layout constraints and clearance requirements.

Q: What is the primary difference between these two inductors?

A: The 47101C is a single-coil wirewound inductor, while the SRF1260-101M is a dual-coil inductor array. The SRF1260-101M provides 100 µH when coils are connected in parallel and 400 µH when connected in series, offering design flexibility not available with the single-coil 47101C.

Q: Are there temperature range considerations for substitution?

A: The 47101C operates from -40°C to 85°C, while the SRF1260-101M extends to 125°C maximum. Applications requiring operation above 85°C must use the SRF1260-101M. Applications limited to 85°C or below may use either component.

Q: How do the DC resistance values compare?

A: The 47101C specifies 686mOhm maximum DCR, while the SRF1260-101M in parallel configuration provides 171mOhm maximum DCR. Lower resistance in the substitute reduces power dissipation and heat generation in current-limited applications.

Q: Are packaging and moisture sensitivity equivalent?

A: Both components feature Nonstandard surface mount packages with Moisture Sensitivity Level 1 (Unlimited), indicating no moisture precautions are required during storage or handling. Physical package dimensions differ slightly but both are suitable for standard reflow soldering processes.

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