SCMS5D12-150 Equivalent & Substitute Parts

Part Overview

The SCMS5D12-150 is a 15 µH shielded inductor manufactured by Signal Transformer, rated for 850 mA continuous current with a maximum DC resistance of 450 mOhm. This surface mount component is designed for applications requiring fixed inductance in compact form factors with electromagnetic shielding.

The SCMS5D12-150 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

SCMS5D12-150

Signal TransformerIn Stock: 965SCMS5D12-150 Datasheet

Current PartRFQ

SD12-150-R

Eaton - Electronics DivisionIn Stock: 819SD12-150-R Datasheet

MFR RecommendedRFQ

SD14-150-R

Eaton - Electronics DivisionIn Stock: 4175SD14-150-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCMS5D12-150 must satisfy the following electrical and mechanical criteria:

Electrical Parameters:

• Inductance value: 15 µH with ±20% tolerance
• Shielding: Shielded construction required
• Surface mount configuration
• Test frequency: 100 kHz

Mechanical Parameters:

• Package footprint: 5.20 mm × 5.20 mm
• Height compatibility within reasonable limits for PCB assembly
• Nonstandard package classification

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level 1 (unlimited)

The substitute parts SD12-150-R and SD14-150-R from Eaton - Electronics Division meet these core substitution criteria. Both maintain the 15 µH inductance specification, shielded construction, identical footprint dimensions, and compatible moisture sensitivity ratings. Variations in current rating, saturation current, and DC resistance reflect different core designs while preserving the fundamental electrical characteristics required for substitution.

Parameter Comparison

Engineering Selection Recommendations

SD12-150-R Selection Criteria: The SD12-150-R maintains active product status with RoHS compliance. This substitute provides 782 mA current rating and 408.9 mOhm DC resistance. The reduced current rating compared to the original SCMS5D12-150 (850 mA) requires circuit-level evaluation to confirm adequacy for the intended application. Operating temperature range is limited to -40°C to 85°C, which is narrower than the original specification.

SD14-150-R Selection Criteria: The SD14-150-R offers the highest current rating at 980 mA with the lowest DC resistance at 260.9 mOhm among available substitutes. This part maintains active product status and full RoHS compliance. The increased current capacity and reduced resistance provide design margin for applications previously constrained by the original component specifications. Operating temperature range matches SD12-150-R at -40°C to 85°C.

Compliance Considerations: Both substitute parts maintain RoHS compliance and moisture sensitivity level 1 ratings, ensuring compatibility with modern manufacturing and environmental standards. The transition from ROHS3 to RoHS compliance represents a standard evolution in component certification.

Frequently Asked Questions (FAQ)

Q: Can SD12-150-R or SD14-150-R be used as direct drop-in replacements for SCMS5D12-150?

A: Both parts share identical inductance (15 µH), tolerance (±20%), footprint (5.20 mm × 5.20 mm), shielding, and mounting type. Height differences are minimal (1.20 mm and 1.45 mm versus 1.25 mm original). Circuit-level compatibility depends on current rating requirements and operating temperature range specifications for your application.

Q: What are the key differences between SD12-150-R and SD14-150-R?

A: SD12-150-R provides 782 mA current rating with 408.9 mOhm DCR. SD14-150-R provides 980 mA current rating with 260.9 mOhm DCR. Both maintain identical inductance and footprint. Selection depends on current handling requirements and acceptable power dissipation in your circuit.

Q: Does the operating temperature range difference affect substitution?

A: The original SCMS5D12-150 operates to 125°C, while both Eaton substitutes operate to 85°C maximum. Applications requiring operation above 85°C require alternative component selection or thermal management review.

Q: Are there compliance or certification concerns with these substitutes?

A: Both SD12-150-R and SD14-150-R maintain RoHS compliance and moisture sensitivity level 1 ratings. These certifications are compatible with current manufacturing and environmental requirements.

Q: How do DC resistance differences impact circuit performance?

A: Lower DC resistance reduces power dissipation and heat generation. SD14-150-R at 260.9 mOhm dissipates less power than SD12-150-R at 408.9 mOhm or the original at 450 mOhm. Applications sensitive to inductor losses benefit from lower resistance values.