SC414MF-120 Equivalent & Substitute Parts

Part Overview

The SC414MF-120 is a 12 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications with a current rating of 820 mA and maximum DC resistance of 367mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SC414MF-120

Signal TransformerIn Stock: 1163SC414MF-120 Datasheet

Current PartRFQ

ASPI-4020S-120M-T

Abracon LLCIn Stock: 939ASPI-4020S-120M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC414MF-120 is based on the following critical parameters that must be maintained or exceeded:

• Inductance Value: 12 µH at 100 kHz test frequency with ±20% tolerance
• Current Rating: Minimum 820 mA continuous current capability
• Saturation Current: Minimum 810 mA threshold
• DC Resistance: Maximum 367 mOhm to preserve circuit efficiency
• Shielding: Shielded construction required for EMI containment
• Mounting: Surface mount configuration on nonstandard 4.30mm x 4.30mm footprint
• Temperature Range: -40°C to 125°C operating specification
• Compliance: ROHS3 and REACH requirements

The ASPI-4020S-120M-T from Abracon LLC meets these substitution criteria with equivalent or superior electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-4020S-120M-T qualifies as a direct substitute for the SC414MF-120 based on the following engineering criteria:

Electrical Performance: The substitute part meets or exceeds all critical electrical parameters. Current rating increases from 820 mA to 880 mA, saturation current improves from 810 mA to 1.5 A, and DC resistance is reduced from 367 mOhm to 175 mOhm, resulting in lower power dissipation and improved thermal performance.

Compliance & Certification: Both parts maintain ROHS3 compliance and unlimited MSL rating (Level 1), ensuring compatibility with standard manufacturing and storage protocols.

Product Status: The substitute part carries active product status from Abracon LLC, providing long-term availability and supply chain stability compared to the obsolete SC414MF-120.

Physical Considerations: The substitute exhibits a minor footprint variation (4.00mm x 4.00mm versus 4.30mm x 4.30mm) with increased height (2.00mm versus 1.50mm). PCB layout verification is required to confirm mechanical clearance in the target application.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-4020S-120M-T be used as a direct replacement for SC414MF-120 in existing designs?

A: Electrical substitution is valid based on equivalent inductance, tolerance, and operating temperature range. Physical PCB layout must be verified due to footprint and height differences (4.00mm x 4.00mm x 2.00mm versus 4.30mm x 4.30mm x 1.50mm).

Q: What are the key advantages of the ASPI-4020S-120M-T substitute?

A: The substitute provides superior electrical performance with 880 mA current rating (versus 820 mA), 1.5 A saturation current (versus 810 mA), and significantly lower DC resistance of 175 mOhm (versus 367 mOhm). Active product status ensures ongoing availability.

Q: Are there compliance or certification differences between the two parts?

A: Both parts maintain ROHS3 compliance, REACH unaffected status, and unlimited MSL rating. No compliance barriers exist for substitution.

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

A: Lower DC resistance (175 mOhm versus 367 mOhm) reduces resistive losses and heat generation during operation, improving overall circuit efficiency and thermal performance.

Q: Does the footprint difference affect circuit performance?

A: Footprint differences are mechanical only and do not affect electrical performance. PCB layout must accommodate the 4.00mm x 4.00mm footprint and 2.00mm height of the substitute part.

Q: Is the ASPI-4020S-120M-T available in the same packaging format?

A: The substitute is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. Verify packaging compatibility with your procurement and assembly requirements.