SC1704-2R2 Equivalent & Substitute Parts

Part Overview

The SC1704-2R2 is a 2.2 µH unshielded surface mount inductor manufactured by Signal Transformer, rated for 1.35 A continuous current with a maximum DC resistance of 150mOhm. 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

SC1704-2R2

Signal TransformerIn Stock: 1219SC1704-2R2 Datasheet

Current PartRFQ

SDR6603-2R2M

Bourns Inc.In Stock: 1544SDR6603-2R2M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC1704-2R2 is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH with ±20% tolerance to maintain circuit performance
• Current Rating: Substitute must support minimum 1.35 A continuous current; higher ratings provide design margin
• DC Resistance: Lower DCR values reduce power dissipation and heat generation
• Saturation Current: Must exceed 900 mA minimum threshold
• Mounting Type: Surface mount configuration required for PCB compatibility
• Operating Temperature: Must span -40°C to 125°C minimum
• Shielding Configuration: Unshielded topology maintained for electromagnetic compatibility with original design
• Compliance: ROHS3 compliance required for regulatory alignment

The SDR6603-2R2M from Bourns Inc. meets all substitution criteria with enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SDR6603-2R2M is a direct functional substitute for the SC1704-2R2. The substitute part exceeds the original specifications in current handling capacity (2.4 A vs. 1.35 A) and provides superior DC resistance performance (70 mOhm vs. 150 mOhm), resulting in reduced thermal dissipation. Both components maintain identical inductance values, tolerance bands, and operating temperature ranges. The substitute part carries active product status with full ROHS3 and REACH compliance, ensuring long-term availability and regulatory alignment. Physical dimensions differ slightly; verification of PCB layout compatibility is required prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the SDR6603-2R2M directly replace the SC1704-2R2 in existing designs?

A: Yes, the SDR6603-2R2M meets all electrical substitution criteria. Inductance value, tolerance, operating temperature range, and compliance certifications are identical. Physical dimensions require PCB layout verification: SC1704-2R2 measures 6.70mm L × 5.60mm W × 1.10mm H; SDR6603-2R2M measures 6.60mm L × 4.45mm W × 2.92mm H.

Q: What are the advantages of using the SDR6603-2R2M substitute?

A: The substitute provides 78% reduction in DC resistance (70 mOhm vs. 150 mOhm), resulting in lower power dissipation and improved thermal performance. Current rating increases from 1.35 A to 2.4 A, providing additional design margin. Saturation current increases from 900 mA to 2.3 A. Active product status ensures ongoing availability.

Q: Are there any electrical performance differences between these parts?

A: Both parts deliver 2.2 µH inductance at 100 kHz test frequency with ±20% tolerance. The substitute exhibits lower DC resistance and higher current handling capacity, which are performance improvements rather than deviations. Self-resonant frequency and Q-factor specifications differ; however, these parameters were not specified for the original part.

Q: What packaging formats are available for the substitute?

A: The SDR6603-2R2M is supplied in Tape & Reel (TR) format. The original SC1704-2R2 packaging format was not specified in available documentation.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the SC1704-2R2 and SDR6603-2R2M are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component procurement.