SC2220-1R0 Equivalent & Substitute Parts

Part Overview

The SC2220-1R0 is a 1 µH unshielded wirewound inductor manufactured by Signal Transformer, rated for 4.4 A continuous current with a maximum DC resistance of 26.6 mOhm. 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 is ROHS3 compliant.

Substiute Parts

SC2220-1R0

Signal TransformerIn Stock: 1117SC2220-1R0 Datasheet

Current PartRFQ

74404063010

Würth ElektronikIn Stock: 404974404063010 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC2220-1R0 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance value: 1 µH (primary functional requirement)
• Current rating: minimum 4.4 A to maintain thermal performance
• DC resistance: lower values preferred to reduce power dissipation
• Saturation current: minimum 4 A to prevent core saturation under rated load
• Operating temperature range: -40°C to 125°C (must match or exceed)

Mechanical Compatibility Criteria:

• Surface mount package format
• Physical footprint compatibility with 6.00 mm x 5.30 mm x 5.00 mm maximum envelope

Compliance Requirements:

• ROHS3 compliance mandatory
• Moisture sensitivity level 1 (unlimited shelf life)

The substitute part 74404063010 (Würth Elektronik WE-LQS series) meets these criteria with equivalent inductance, superior current rating (5.2 A), lower DC resistance (10 mOhm), and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 74404063010 (Würth Elektronik WE-LQS) is a direct functional substitute for the obsolete SC2220-1R0. The substitute part provides superior electrical performance with 18% higher current rating (5.2 A vs 4.4 A) and 62% lower DC resistance (10 mOhm vs 26.6 mOhm), resulting in reduced thermal dissipation and improved efficiency in power delivery applications.

Both parts maintain identical operating temperature range (-40°C to 125°C) and ROHS3 compliance. The substitute part carries AEC-Q200 automotive qualification, indicating enhanced reliability screening and process control. The semi-shielded construction of the substitute provides improved electromagnetic compatibility compared to the unshielded original.

Physical footprint differences exist: the substitute is slightly wider (6.00 mm vs 5.30 mm) and significantly lower in profile (2.80 mm vs 5.00 mm). PCB layout verification is required to confirm mechanical fit within the available mounting space.

Frequently Asked Questions (FAQ)

Q: Can the 74404063010 directly replace the SC2220-1R0 in all applications?

A: Electrical substitution is valid based on matching inductance (1 µH), exceeding current rating requirements (5.2 A vs 4.4 A), and identical operating temperature range. Physical footprint verification is mandatory due to dimensional differences, particularly the reduced height (2.80 mm vs 5.00 mm) and increased width (6.00 mm vs 5.30 mm).

Q: What are the key differences in DC resistance between these parts?

A: The substitute part exhibits 62% lower DC resistance (10 mOhm vs 26.6 mOhm). This reduction decreases resistive losses and heat generation, providing thermal and efficiency benefits in current-carrying applications.

Q: Does the semi-shielded design of the substitute affect circuit performance?

A: The semi-shielded construction of the 74404063010 provides improved electromagnetic shielding compared to the unshielded SC2220-1R0. This may reduce radiated emissions and susceptibility to external magnetic fields, benefiting high-frequency or noise-sensitive circuits.

Q: Are there tolerance differences that affect circuit design?

A: The substitute part specifies ±30% inductance tolerance compared to ±20% for the original. Circuit designs dependent on tight inductance tolerance must account for this wider specification window.

Q: What is the significance of AEC-Q200 qualification on the substitute part?

A: AEC-Q200 certification indicates the part meets automotive-grade reliability standards, including enhanced screening, process controls, and failure rate documentation. This qualification is not specified for the obsolete original part.