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Murata Power Solutions 47680C Equivalent & Substitute Parts
Part Overview
The Murata Power Solutions 47680C is a 68 µH shielded wirewound inductor rated for 1.22 A continuous current with a maximum DC resistance of 456mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is designed for applications requiring fixed inductance in compact form factors. The part is currently active in production with 933 units in stock. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications where the primary part may be unavailable or where specific performance characteristics require alternative configurations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 68 µH |
| Current Rating | 1.22 A |
| DC Resistance (DCR) | 456mOhm Max |
| Shielding | Shielded |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Package Type | Nonstandard, 4 Lead |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The Bourns Inc. SRF1260-680M is identified as a manufacturer-recommended substitute for the 47680C based on the following substitution criteria:
Primary Matching Parameters:
- Inductance (Parallel Configuration): 68 µH — matches the required inductance value
- Shielding: Shielded — maintains electromagnetic isolation
- Mounting Type: Surface Mount — compatible with PCB assembly processes
- RoHS3 Compliance: Both parts meet ROHS3 requirements
- Moisture Sensitivity Level: MSL 1 (Unlimited) — identical environmental rating
Configuration Consideration: The SRF1260-680M is a 2-coil inductor array that provides 68 µH when coils are connected in parallel. This configuration allows the substitute to deliver the required inductance value while offering additional flexibility through series connection capability (272 µH).
Parameter Comparison
| Parameter | 47680C (Murata) | SRF1260-680M (Bourns) | Notes |
|---|---|---|---|
| Inductance | 68 µH | 68 µH (Parallel) | Equivalent inductance value |
| Current Rating | 1.22 A | 2.22 A (Parallel) | Substitute rated higher |
| DC Resistance (DCR) | 456mOhm Max | 117mOhm Max (Parallel) | Substitute has lower resistance |
| Shielding | Shielded | Shielded | Identical |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C | Substitute rated to higher temperature |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Package Type | Nonstandard, 4 Lead | Nonstandard | Both nonstandard form factors |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical |
Engineering Selection Recommendations
The SRF1260-680M qualifies as a direct substitute for the 47680C based on electrical equivalence at the 68 µH parallel configuration. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility.
The substitute part demonstrates superior electrical characteristics in current rating (2.22 A vs. 1.22 A) and DC resistance (117mOhm vs. 456mOhm), providing margin for thermal and performance considerations. The extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C) offers additional environmental flexibility.
Physical dimensions differ slightly (12.50mm x 12.50mm x 6.20mm for SRF1260-680M vs. 12.20mm x 12.20mm x 5.00mm for 47680C), requiring verification of PCB layout constraints and available mounting space. Both parts are surface mount compatible with nonstandard lead configurations.
Frequently Asked Questions (FAQ)
Q: Can the SRF1260-680M be used as a direct replacement for the 47680C?
A: Yes, when configured in parallel mode. The SRF1260-680M delivers 68 µH inductance matching the 47680C specification. Both parts are shielded, surface mount, ROHS3 compliant, and operate within overlapping temperature ranges. PCB layout modifications may be required due to dimensional differences.
Q: What are the key electrical differences between these parts?
A: The SRF1260-680M provides higher current rating (2.22 A parallel vs. 1.22 A) and significantly lower DC resistance (117mOhm vs. 456mOhm) in the parallel configuration. The substitute also supports series connection (272 µH) for applications requiring higher inductance values.
Q: Are there package compatibility concerns?
A: Both parts use nonstandard form factors with different dimensions. The 47680C measures 12.20mm x 12.20mm x 5.00mm while the SRF1260-680M measures 12.50mm x 12.50mm x 6.20mm. PCB footprint and clearance verification is necessary before substitution.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the 47680C and SRF1260-680M are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS 8504.50.4000.
Q: What is the inductance tolerance for the substitute part?
A: The SRF1260-680M carries a ±20% inductance tolerance. The 47680C tolerance specification was not provided in the available data.
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