SC105B-560 Equivalent & Substitute Parts

Part Overview

The SC105B-560 is a 56 µH unshielded wirewound inductor manufactured by Signal Transformer, rated for 1.45 A continuous current with a maximum DC resistance of 250mOhm. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

The SC105B-560 operates across the industrial temperature range of -40°C to 125°C and is packaged in a nonstandard surface mount form factor measuring 10.90mm × 9.80mm × 6.00mm (max height). The part is ROHS3 compliant with MSL 1 rating, indicating unlimited moisture tolerance.

Substiute Parts

SC105B-560

Signal TransformerIn Stock: 854SC105B-560 Datasheet

Current PartRFQ

SRR1050A-560Y

Bourns Inc.In Stock: 2188SRR1050A-560Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SRR1050A-560Y qualifies as a functional equivalent based on the following critical parameters:

Matching Parameters:

• Inductance value: 56 µH (identical)
• Operating temperature range: -40°C to 125°C (identical)
• Surface mount packaging: Both components use surface mount technology
• RoHS3 compliance: Both parts meet ROHS3 requirements
• MSL 1 rating: Both parts have unlimited moisture sensitivity tolerance

Substitution Logic: The SRR1050A-560Y maintains the core inductance specification while providing improved electrical performance through higher current rating (1.9 A vs. 1.45 A) and lower DC resistance (160 mOhm vs. 250 mOhm). The substitute uses a shielded drum core ferrite construction compared to the unshielded wirewound design of the original part. Both components operate within the same temperature envelope and meet equivalent compliance standards.

Parameter Comparison

Engineering Selection Recommendations

The SRR1050A-560Y is the designated manufacturer-recommended substitute for the obsolete SC105B-560. Selection of this substitute is supported by:

Product Status: The SC105B-560 is obsolete, while the SRR1050A-560Y maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance Alignment: Both components achieve ROHS3 compliance and carry MSL 1 ratings, maintaining equivalent environmental and moisture handling requirements.

Electrical Performance: The substitute provides enhanced electrical characteristics with higher current capacity (1.9 A vs. 1.45 A) and improved DC resistance (160 mOhm vs. 250 mOhm), allowing operation at higher current levels without thermal degradation.

Temperature Rating: Identical operating temperature range (-40°C to 125°C) ensures thermal compatibility in existing circuit designs.

Certifications: The SRR1050A-560Y carries AEC-Q200 qualification, indicating automotive-grade reliability standards.

Frequently Asked Questions (FAQ)

Q: Can the SRR1050A-560Y directly replace the SC105B-560 in existing designs?

A: The SRR1050A-560Y is the manufacturer-recommended substitute and maintains the same 56 µH inductance value and operating temperature range. However, the substitute uses shielded construction versus the original unshielded design. Verify that shielding does not conflict with circuit layout or EMI requirements in your specific application.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Shielding—SRR1050A-560Y is shielded while SC105B-560 is unshielded; (2) Current capacity—SRR1050A-560Y supports 1.9 A versus 1.45 A; (3) DC resistance—SRR1050A-560Y has 160 mOhm maximum versus 250 mOhm; (4) Core construction—SRR1050A-560Y uses ferrite drum core versus wirewound; (5) Inductance tolerance—SRR1050A-560Y has ±30% versus ±20%.

Q: Are there packaging considerations when switching to the SRR1050A-560Y?

A: Both components use surface mount technology. The SRR1050A-560Y is available in Tape & Reel (TR) packaging, while the SC105B-560 used nonstandard packaging. Verify that the substitute's physical dimensions (10.20mm L × 10.00mm W × 5.10mm H max) fit within your PCB layout constraints.

Q: Does the shielded design of the SRR1050A-560Y affect circuit performance?

A: Shielding reduces electromagnetic radiation and susceptibility to external interference. This is generally beneficial for noise-sensitive circuits. However, shielded inductors may exhibit different frequency response characteristics. Verify performance through circuit simulation or prototype testing if operating near the inductance frequency test point (100 kHz for the substitute versus 2.52 MHz for the original).

Q: What compliance standards apply to both parts?

A: Both the SC105B-560 and SRR1050A-560Y are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. The SRR1050A-560Y additionally meets AEC-Q200 automotive qualification standards.