SC414MF-220 Equivalent & Substitute Parts

Part Overview

The SC414MF-220 is a 22 µH shielded inductor manufactured by Signal Transformer, rated for 660 mA continuous current with a maximum DC resistance of 569 mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across the temperature range of -40°C to 125°C and is fully RoHS3 compliant.

Substiute Parts

SC414MF-220

Signal TransformerIn Stock: 785SC414MF-220 Datasheet

Current PartRFQ

1231AS-H-220M=P3

Murata ElectronicsIn Stock: 17381231AS-H-220M=P3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC414MF-220 is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with ±20% tolerance
• Current Rating: Substitute must support minimum 660 mA continuous current
• Saturation Current: Substitute must maintain saturation current at or above 600 mA
• DC Resistance: Lower DCR values improve efficiency; maximum acceptable DCR is 569 mOhm
• Shielding: Shielded construction required for EMI containment
• Mounting Type: Surface mount configuration mandatory
• Environmental Compliance: RoHS3 compliance required

The 1231AS-H-220M=P3 from Murata Electronics meets these substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 1231AS-H-220M=P3 is the qualified substitute for SC414MF-220 applications. Selection is based on the following factors:

Electrical Performance: The substitute provides superior DC resistance (342 mOhm vs. 569 mOhm), resulting in reduced power dissipation and improved thermal efficiency. Current rating and saturation current both exceed the original specification.

Compliance & Availability: The substitute maintains ROHS3 compliance and is classified as active product status, ensuring long-term availability and supply chain continuity. The original SC414MF-220 is obsolete.

Temperature Consideration: The substitute operates to 85°C maximum, compared to the original 125°C upper limit. Applications requiring operation above 85°C require thermal analysis or alternative component selection.

Physical Compatibility: Both components use nonstandard surface mount packages with similar footprints suitable for PCB integration.

Frequently Asked Questions (FAQ)

Q: Can the 1231AS-H-220M=P3 directly replace SC414MF-220 in existing designs?

A: Yes, provided the application does not require continuous operation above 85°C. The substitute meets or exceeds all critical electrical parameters including inductance, current rating, and saturation current. Physical footprints are compatible for surface mount assembly.

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

A: Lower DC resistance (342 mOhm vs. 569 mOhm) reduces resistive losses and heat generation during operation. This improves efficiency and thermal performance in the application circuit.

Q: Are there packaging differences between the original and substitute?

A: Both components use nonstandard surface mount packages. Physical dimensions differ slightly: the original is 4.30mm x 4.30mm x 1.50mm height, while the substitute is 3.70mm x 3.90mm x 1.80mm height. PCB layout verification is recommended.

Q: What compliance certifications apply to the substitute?

A: The 1231AS-H-220M=P3 is ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000, matching the original part's regulatory status.

Q: Is the substitute available in the same packaging format?

A: The substitute is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Inventory availability is confirmed at 1713 pieces in stock.