SC312MF-5R6 Equivalent & Substitute Parts

Part Overview

The SC312MF-5R6 is a 5.6 µH shielded wirewound inductor manufactured by Signal Transformer, rated for 780 mA continuous current with a maximum DC resistance of 388mOhm. 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 is ROHS3 compliant.

Substiute Parts

SC312MF-5R6

Signal TransformerIn Stock: 753SC312MF-5R6 Datasheet

Current PartRFQ

ASPI-4020S-5R6M-T

Abracon LLCIn Stock: 1198ASPI-4020S-5R6M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC312MF-5R6 is determined by the following critical parameters:

• Inductance Value: Must be 5.6 µH with ±20% tolerance
• Current Rating: Minimum 780 mA continuous current capability
• Saturation Current: Minimum 1.22 A
• DC Resistance: Lower or equal to 388 mOhm preferred for thermal performance
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Temperature Range: -40°C to 125°C minimum
• Compliance: ROHS3 and REACH requirements

The ASPI-4020S-5R6M-T from Abracon LLC meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-4020S-5R6M-T is the qualified substitute for the SC312MF-5R6. Selection is based on the following factors:

Electrical Compatibility: Both components share identical inductance values and tolerance specifications at the 100 kHz test frequency. The substitute provides superior current handling with 1.22 A rating versus 780 mA, and significantly lower DC resistance at 90 mOhm compared to 388 mOhm maximum, resulting in reduced thermal dissipation.

Mechanical Compatibility: Both components are surface mount shielded inductors with nonstandard package dimensions. The ASPI-4020S-5R6M-T measures 4.00mm × 4.00mm × 2.00mm (height) compared to the SC312MF-5R6 at 3.80mm × 3.80mm × 1.35mm. Physical layout verification is required for space-constrained applications.

Compliance and Availability: The ASPI-4020S-5R6M-T maintains ROHS3 compliance and REACH unaffected status identical to the original part. Active product status ensures long-term availability and supply chain continuity, addressing the obsolescence of the SC312MF-5R6.

Temperature Performance: Both components operate across -40°C to 125°C, meeting industrial temperature requirements without derating.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-4020S-5R6M-T directly replace the SC312MF-5R6 in existing designs?

A: Electrical substitution is valid based on matching inductance, tolerance, and exceeding current and saturation ratings. Physical layout verification is mandatory due to dimensional differences. The substitute is 0.65mm taller and 0.20mm larger in length and width.

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

A: The ASPI-4020S-5R6M-T exhibits 90 mOhm DC resistance compared to 388 mOhm maximum in the original. This 77% reduction in resistance decreases I²R losses and thermal generation, improving efficiency in current-carrying applications.

Q: Are both parts qualified for the same moisture sensitivity level?

A: Yes. Both the SC312MF-5R6 and ASPI-4020S-5R6M-T carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

Q: What packaging format is available for the substitute?

A: The ASPI-4020S-5R6M-T is supplied in Tape & Reel (TR) format, standard for automated assembly processes.

Q: Does the substitute provide higher frequency performance?

A: The ASPI-4020S-5R6M-T specifies a self-resonant frequency of 30 MHz, whereas the original part does not provide this specification. This additional frequency margin may benefit high-frequency circuit applications.