SC105B-150 Equivalent & Substitute Parts

Part Overview

The SC105B-150 is a 15 µH unshielded wirewound inductor manufactured by Signal Transformer, rated for 2.9 A continuous current with 80mOhm maximum DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SC105B-150

Signal TransformerIn Stock: 767SC105B-150 Datasheet

Current PartRFQ

7447714150

Würth ElektronikIn Stock: 41807447714150 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC105B-150 can be substituted with the Würth Elektronik 7447714150 based on the following critical parameters:

• Inductance Value: Both parts specify 15 µH with ±20% tolerance, ensuring functional equivalence in inductance-dependent circuits
• Operating Temperature Range: Identical -40°C to 125°C range maintains thermal compatibility
• Inductance Tolerance: Matching ±20% tolerance ensures circuit performance within design specifications
• Mounting Type: Both are surface mount components, compatible with existing PCB layouts
• RoHS Compliance: Both meet ROHS3 requirements, satisfying regulatory requirements

The substitute part offers improved electrical performance through higher current rating (4.6 A vs 2.9 A), lower DC resistance (43 mOhm vs 80 mOhm), and shielded construction, making it suitable for applications requiring enhanced performance margins.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 7447714150 is the qualified substitute for the obsolete SC105B-150. Selection is based on:

• Product Status Alignment: The substitute is active and in production, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements
• Functional Equivalence: Matching inductance value and tolerance ensure circuit performance equivalence
• Performance Enhancement: The substitute provides superior electrical characteristics with higher current rating, lower DC resistance, and shielded construction, offering improved reliability margins for the application

Frequently Asked Questions (FAQ)

Q: Can the 7447714150 directly replace the SC105B-150 in existing designs?

A: Yes. Both parts share identical inductance (15 µH), tolerance (±20%), operating temperature range (-40°C to 125°C), and surface mount packaging. The substitute meets all functional requirements for direct substitution.

Q: What are the key differences between these parts?

A: The primary differences are current rating (4.6 A vs 2.9 A), DC resistance (43 mOhm vs 80 mOhm), shielding (shielded vs unshielded), and product status (active vs obsolete). The substitute offers improved electrical performance.

Q: Does the shielded construction of the substitute affect circuit layout?

A: Shielded construction reduces electromagnetic interference emission and susceptibility. Physical dimensions differ slightly (10.00mm x 10.00mm vs 10.90mm x 9.80mm), requiring verification of PCB layout compatibility.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and REACH unaffected. The substitute carries AEC-Q200 rating, indicating automotive-grade qualification, providing additional reliability assurance.

Q: What is the packaging format for the substitute?

A: The 7447714150 is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly operations.