SC312MF-560 Equivalent & Substitute Parts

Part Overview

The SC312MF-560 is a 56 µH shielded wirewound inductor manufactured by Signal Transformer, rated for 230 mA continuous current with a maximum DC resistance of 3.6 Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary 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

SC312MF-560

Signal TransformerIn Stock: 981SC312MF-560 Datasheet

Current PartRFQ

ASPI-4020S-560M-T

Abracon LLCIn Stock: 1085ASPI-4020S-560M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC312MF-560 is based on the following critical parameters:

• Inductance Value: 56 µH at 100 kHz test frequency with ±20% tolerance
• Current Rating: Minimum 230 mA continuous current capability
• Saturation Current: Minimum 420 mA to maintain performance under transient conditions
• DC Resistance: Maximum 3.6 Ohm to limit power dissipation
• Shielding: Shielded construction required for EMI containment
• Surface Mount Configuration: Nonstandard package footprint compatibility
• Temperature Range: -40°C to 125°C operating specification
• Compliance: ROHS3 and REACH requirements

The ASPI-4020S-560M-T from Abracon LLC meets all substitution criteria with improved electrical performance characteristics, including higher current rating (410 mA), lower DC resistance (800 mOhm), and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-4020S-560M-T qualifies as a direct substitute for the SC312MF-560 based on matched inductance specifications, identical tolerance ratings, and equivalent operating temperature range. The substitute part demonstrates superior electrical performance with 78% higher current rating capacity and significantly reduced DC resistance, providing enhanced thermal efficiency and transient current handling.

Both components maintain ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory and environmental compatibility. The substitute part carries active product status from Abracon LLC, providing long-term availability and supply chain stability compared to the obsolete Signal Transformer original.

Physical package dimensions differ slightly (4.00mm × 4.00mm versus 3.80mm × 3.80mm), requiring PCB layout verification for footprint compatibility. Height specifications (2.00mm versus 1.35mm) must be evaluated against available board clearance.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-4020S-560M-T directly replace the SC312MF-560 in existing designs?

A: Electrical substitution is valid based on matched inductance, tolerance, temperature range, and compliance certifications. Physical footprint verification is required due to dimensional differences in length, width, and height.

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

A: The ASPI-4020S-560M-T exhibits 800 mOhm DCR compared to 3.6 Ohm maximum in the original part. This represents substantially lower resistive losses, reducing power dissipation and heat generation during operation at rated current levels.

Q: Are there packaging differences between these parts?

A: The SC312MF-560 uses a nonstandard package with 3.80mm × 3.80mm footprint and 1.35mm maximum height. The ASPI-4020S-560M-T maintains nonstandard packaging with 4.00mm × 4.00mm footprint and 2.00mm maximum height. PCB layout compatibility must be confirmed before implementation.

Q: Does the higher current rating of the substitute affect circuit performance?

A: The ASPI-4020S-560M-T is rated for 410 mA continuous current versus 230 mA for the original part. This provides additional design margin and transient current capability without affecting nominal circuit operation at the original design current level.

Q: What compliance certifications apply to both parts?

A: Both the SC312MF-560 and ASPI-4020S-560M-T maintain ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity ratings (MSL 1), ensuring regulatory compatibility for industrial applications.