234R7C Equivalent & Substitute Parts

Part Overview

The 234R7C is a 4.7 µH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 1.48 A continuous current with a maximum DC resistance of 68mOhm. This surface mount component operates across the industrial temperature range of -40°C to 85°C and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent inductance values, current ratings, and physical dimensions align within acceptable engineering tolerances for the application.

Substiute Parts

234R7C

Murata Power Solutions Inc.In Stock: 3037234R7C Datasheet

Current PartRFQ

SDR0403-4R7ML

Bourns Inc.In Stock: 1805SDR0403-4R7ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 234R7C is determined by the following critical parameters:

• Inductance Value: Must be 4.7 µH to maintain circuit performance
• Current Rating: Substitute must support minimum 1.48 A; higher ratings are acceptable
• DC Resistance: Lower or equal DCR values are preferred to minimize power loss
• Physical Dimensions: Package footprint must match 4.50mm x 4.00mm to ensure PCB compatibility
• Mounting Type: Surface mount configuration required
• Shielding: Unshielded specification maintained
• Compliance: RoHS3 compliance required for regulatory alignment

The SDR0403-4R7ML meets these substitution criteria with equivalent inductance, superior current rating (1.7 A vs 1.48 A), and identical footprint dimensions.

Parameter Comparison

Engineering Selection Recommendations

Both the 234R7C and SDR0403-4R7ML are Active status components with full RoHS3 compliance and REACH unaffected designation. The SDR0403-4R7ML provides enhanced current handling capability (1.7 A vs 1.48 A) and extended operating temperature range (-40°C to 125°C vs -40°C to 85°C). The trade-off is increased DC resistance (94mOhm vs 68mOhm) and marginally greater seated height (4.60mm vs 3.20mm). Selection between these parts depends on application thermal requirements and power dissipation constraints within the specified current envelope.

Frequently Asked Questions (FAQ)

Q: Can the SDR0403-4R7ML directly replace the 234R7C in all applications?

A: Direct substitution is valid when the application current requirement does not exceed 1.48 A and the additional 26mOhm DC resistance does not create unacceptable power loss. The 0.30mm height difference must be verified against PCB clearance constraints.

Q: What is the impact of higher DC resistance in the substitute part?

A: The SDR0403-4R7ML exhibits 94mOhm maximum DCR compared to 68mOhm for the 234R7C. This 38% increase results in proportionally higher resistive losses at rated current. Power dissipation at 1.48 A would be approximately 0.149 W versus 0.097 W for the original part.

Q: Are both parts suitable for high-temperature applications?

A: The 234R7C operates to 85°C maximum, while the SDR0403-4R7ML extends to 125°C. Applications requiring sustained operation above 85°C must use the Bourns substitute.

Q: Do the parts share identical PCB footprints?

A: Both components use identical 4.50mm x 4.00mm footprints and are surface mount compatible. The seated height difference (3.20mm vs 4.60mm) requires verification of vertical clearance in the assembly design.

Q: What compliance certifications apply to both parts?

A: Both the 234R7C and SDR0403-4R7ML carry RoHS3 compliance, REACH unaffected status, and MSL Level 1 (unlimited moisture sensitivity). ECCN classification is EAR99 for both parts.