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Equivalent & Substitute Parts for 264R7C
Part Overview
The 264R7C is a 4.7 µH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 3.6 A continuous current with a maximum DC resistance of 45mOhm. This component is part of the 2600 series and is actively produced. The part is packaged in Surface Mount configuration with nonstandard dimensions (10.00mm x 9.00mm x 5.80mm) and is ROHS3 compliant with unlimited moisture sensitivity rating.
Substitute parts are identified when equivalent electrical performance can be maintained within the specified operating parameters while meeting the same compliance and environmental requirements.
Substiute Parts
Key Parameters
| Parameter | 264R7C |
|---|---|
| Inductance | 4.7 µH |
| Current Rating | 3.6 A |
| DC Resistance (DCR) | 45mOhm Max |
| Shielding | Unshielded |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C ~ 85°C |
| Self Resonant Frequency | 37MHz |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The SDR1006-4R7ML from Bourns Inc. qualifies as a substitute based on the following alignment of critical parameters:
Matching Electrical Specifications:
- Identical inductance value: 4.7 µH
- Higher current rating: 4 A (exceeds 3.6 A requirement)
- Lower DC resistance: 36mOhm Max (superior to 45mOhm Max)
- Unshielded configuration maintained
- Surface Mount packaging maintained
Matching Compliance & Environmental:
- ROHS3 Compliant
- Moisture Sensitivity Level 1 (Unlimited)
- REACH Unaffected status
- Same ECCN and HTSUS classifications
Physical Compatibility:
- Nonstandard package maintained
- Height seated maximum: 5.80mm (identical)
- Footprint dimensions within acceptable tolerance for Surface Mount applications
Parameter Comparison
| Parameter | 264R7C (Murata) | SDR1006-4R7ML (Bourns) |
|---|---|---|
| Inductance | 4.7 µH | 4.7 µH |
| Current Rating (Amps) | 3.6 A | 4 A |
| DC Resistance (DCR) | 45mOhm Max | 36mOhm Max |
| Saturation Current (Isat) | Not specified | 7.3 A |
| Shielding | Unshielded | Unshielded |
| Self Resonant Frequency | 37MHz | 40MHz |
| Operating Temperature Range | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package Type | Nonstandard | Nonstandard |
| Height - Seated (Max) | 5.80mm | 5.80mm |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
The SDR1006-4R7ML is electrically and mechanically compatible with the 264R7C for applications requiring 4.7 µH inductance at 3.6 A or lower current levels. The substitute part provides performance advantages including lower DC resistance (36mOhm vs 45mOhm), higher current rating (4 A vs 3.6 A), and extended operating temperature range (-40°C to 125°C vs -40°C to 85°C).
Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected) and moisture sensitivity ratings. Physical mounting compatibility is maintained with identical seated height and nonstandard package configuration suitable for Surface Mount assembly.
Selection between these parts should be based on availability, lead time, and specific thermal operating requirements of the application.
Frequently Asked Questions (FAQ)
Q: Can the SDR1006-4R7ML directly replace the 264R7C in existing designs?
A: Yes. Both parts share identical inductance (4.7 µH), unshielded configuration, Surface Mount mounting type, and seated height (5.80mm). The substitute part meets or exceeds all electrical specifications of the original part.
Q: What are the key differences between these inductors?
A: The SDR1006-4R7ML features lower DC resistance (36mOhm vs 45mOhm), higher current rating (4 A vs 3.6 A), higher saturation current (7.3 A specified), and extended operating temperature range (125°C vs 85°C maximum). The substitute uses a drum core ferrite construction versus the original wirewound design.
Q: Are there any thermal considerations when substituting?
A: The SDR1006-4R7ML operates to 125°C maximum, providing 40°C additional headroom compared to the 264R7C at 85°C maximum. Applications operating near the upper temperature limit of the original part may benefit from this extended range.
Q: Do both parts have the same moisture sensitivity rating?
A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.
Q: Are the footprints identical?
A: Footprints are compatible for Surface Mount assembly. The 264R7C measures 10.00mm x 9.00mm while the SDR1006-4R7ML measures 9.80mm x 9.80mm. Both maintain 5.80mm seated height, ensuring PCB layout compatibility.
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