28152C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions Inc. 28152C is a 1.5 µH unshielded wirewound surface mount inductor rated for 12.5 A continuous current with a maximum DC resistance of 3.6mOhm. This component belongs to the 2800 series and is classified as obsolete. Due to its obsolete status, identifying qualified substitute parts is essential for design continuity and procurement planning. The SC4020FH-1R5 from Signal Transformer serves as the manufacturer-recommended equivalent for this application.

Substiute Parts

28152C

Murata Power Solutions Inc.In Stock: 111828152C Datasheet

Current PartRFQ

SC4020FH-1R5

Signal TransformerIn Stock: 690SC4020FH-1R5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC4020FH-1R5 qualifies as a direct substitute for the 28152C based on the following critical parameters:

• Inductance Match: Both parts specify 1.5 µH, meeting the core functional requirement
• Current Rating Compatibility: The substitute provides 14.6 A rating, exceeding the original 12.5 A requirement
• Shielding Configuration: Both are unshielded wirewound inductors, maintaining electromagnetic behavior consistency
• Mounting Type: Both use surface mount technology with nonstandard package dimensions
• Operating Temperature Range: Identical -40°C to 125°C specification ensures thermal compatibility
• Regulatory Compliance: Both are RoHS compliant and REACH unaffected

The primary design consideration for substitution is the DC resistance differential (3.6mOhm vs. 5.9mOhm), which affects power dissipation characteristics in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The SC4020FH-1R5 is the qualified substitute for the obsolete 28152C based on functional equivalence and regulatory compliance. The substitute maintains active product status with ROHS3 certification, ensuring long-term availability and compliance with current environmental standards. Both components share identical inductance values, operating temperature ranges, and moisture sensitivity classifications.

The primary engineering consideration is the increased DC resistance of the substitute (5.9mOhm vs. 3.6mOhm), which results in approximately 64% higher resistive losses. Applications sensitive to thermal dissipation or efficiency must evaluate this parameter against circuit requirements. The substitute's higher current rating (14.6 A vs. 12.5 A) and specified saturation current (12 A) provide additional design margin in current-limited applications.

Physical dimensions differ slightly between the two parts. The substitute is longer (19.50mm vs. 18.50mm) and narrower (13.30mm vs. 15.20mm) with reduced height (6.90mm vs. 7.60mm). PCB layout verification is required to confirm mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SC4020FH-1R5 directly replace the 28152C in existing designs?

A: The SC4020FH-1R5 provides functional equivalence for the 1.5 µH inductance requirement and current rating. However, the increased DC resistance (5.9mOhm vs. 3.6mOhm) affects power dissipation. Circuit analysis must confirm that the additional resistive losses remain within acceptable thermal limits. Physical dimensions also differ, requiring PCB layout verification.

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

A: The SC4020FH-1R5 exhibits 64% higher DC resistance than the 28152C. In applications carrying the rated current, this increases resistive power dissipation proportionally. For a 12.5 A load, the substitute dissipates approximately 0.92 W compared to 0.56 W in the original part. Thermal management and efficiency requirements must be evaluated against this difference.

Q: Are both parts compliant with current regulatory standards?

A: The 28152C is RoHS compliant. The SC4020FH-1R5 meets ROHS3 compliance, representing the current environmental standard. Both parts are REACH unaffected. The substitute provides enhanced regulatory alignment for new designs and long-term procurement.

Q: How do the physical dimensions affect PCB integration?

A: The SC4020FH-1R5 is 1.0mm longer and 1.9mm narrower than the 28152C, with 0.7mm reduced height. These dimensional changes may affect PCB routing, component spacing, and thermal management layout. Physical footprint verification against the target PCB design is required before implementation.

Q: What is the significance of the saturation current specification in the substitute?

A: The SC4020FH-1R5 specifies a saturation current of 12 A, indicating the current level at which inductance begins to degrade. This value is below the part's 14.6 A continuous rating, establishing a practical operating ceiling for applications requiring stable inductance. The original 28152C does not provide this specification.