SCMS5D14-100 Equivalent & Substitute Parts

Part Overview

The SCMS5D14-100 is a 10 µH shielded inductor manufactured by Signal Transformer, rated for 1.05 A continuous current with a maximum DC resistance of 300mOhm. This component is designed for surface mount applications in compact form factors (5.20mm x 5.20mm). The part is currently obsolete, making identification of compatible substitutes essential for ongoing production and maintenance applications.

Substiute Parts

SCMS5D14-100

Signal TransformerIn Stock: 996SCMS5D14-100 Datasheet

Current PartRFQ

SD53-100-R

Eaton - Electronics DivisionIn Stock: 1291SD53-100-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCMS5D14-100 is determined by the following critical parameters:

• Inductance Value: Must be 10 µH with ±20% tolerance
• Current Rating: Substitute must support minimum 1.05 A continuous current
• DC Resistance: Lower DCR values are acceptable; higher values may impact circuit performance
• Shielding: Must maintain shielded construction to prevent electromagnetic interference
• Mounting Type: Surface mount configuration required for PCB compatibility
• Package Dimensions: Physical footprint must accommodate 5.20mm x 5.20mm base dimensions
• Operating Temperature: Must support -40°C to 125°C range
• Compliance: RoHS3 compliance and MSL 1 rating required

The SD53-100-R from Eaton - Electronics Division meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SD53-100-R is an active product from Eaton - Electronics Division and represents a direct functional substitute for the obsolete SCMS5D14-100. Both components maintain identical inductance values, tolerance specifications, and operating temperature ranges. The SD53-100-R provides superior electrical performance with 34% higher current rating (1.41 A vs 1.05 A) and 70% lower DC resistance (90mOhm vs 300mOhm), resulting in reduced power dissipation and improved thermal characteristics.

Both parts maintain ROHS3 compliance and MSL 1 moisture sensitivity ratings, ensuring compatibility with modern manufacturing and storage requirements. The primary design consideration is the increased seated height of the SD53-100-R (3.00mm vs 1.50mm), which requires verification of available PCB clearance in the target application. The identical base footprint (5.20mm x 5.20mm) ensures pad-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the SD53-100-R directly replace the SCMS5D14-100 without circuit modifications?

A: Yes, the SD53-100-R is electrically compatible as a direct substitute. Both components share identical inductance values (10 µH), tolerance specifications (±20%), and operating temperature ranges (-40°C to 125°C). The primary consideration is physical clearance, as the SD53-100-R has a maximum seated height of 3.00mm compared to 1.50mm for the original part.

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

A: The SD53-100-R offers improved electrical performance with higher current rating (1.41 A vs 1.05 A) and significantly lower DC resistance (90mOhm vs 300mOhm). The increased height (3.00mm vs 1.50mm) is the primary physical difference. Both maintain identical base dimensions (5.20mm x 5.20mm) and shielded construction.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both the SCMS5D14-100 and SD53-100-R maintain ROHS3 compliance and MSL 1 moisture sensitivity ratings. Substitution does not introduce compliance risks for applications requiring these certifications.

Q: Why is the DC resistance of the SD53-100-R significantly lower?

A: The SD53-100-R uses drum core wirewound construction with ferrite material, which provides superior electrical characteristics compared to the original design. Lower DC resistance reduces I²R losses and heat generation during operation.

Q: What should be verified before implementing this substitution?

A: Verify available vertical clearance on the PCB assembly, as the SD53-100-R height is 3.00mm maximum. Confirm that the increased current rating and lower DC resistance do not introduce unintended circuit behavior in the target application. Pad-level compatibility is maintained due to identical base footprint dimensions.