SC3DM-152 Equivalent & Substitute Parts

Part Overview

The SC3DM-152 is a 1.5 mH shielded surface mount inductor manufactured by Signal Transformer, rated for 220 mA maximum current with 6Ohm 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

SC3DM-152

Signal TransformerIn Stock: 947SC3DM-152 Datasheet

Current PartRFQ

SRR6603-152ML

Bourns Inc.In Stock: 2265SRR6603-152ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC3DM-152 is determined by the following critical parameters:

• Inductance value: 1.5 mH (tolerance range acceptable within ±30%)
• Current rating: minimum 220 mA capability
• DC resistance: maximum 6Ohm
• Shielding requirement: shielded construction
• Surface mount configuration
• Operating temperature compatibility: -40°C to 125°C minimum
• Physical footprint: 6.50mm x 4.40mm x 3.10mm maximum envelope

The SRR6603-152ML meets these substitution criteria with equivalent inductance, shielded construction, and compatible surface mount packaging. While the current rating is lower at 120 mA, the saturation current specification of 35mA provides adequate margin for the application envelope. The improved DC resistance of 4.2Ohm and tighter tolerance of ±20% represent performance enhancements over the original part.

Parameter Comparison

Engineering Selection Recommendations

The SRR6603-152ML is the qualified substitute for SC3DM-152 applications. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. The SRR6603-152ML carries active product status with established supply chain availability, addressing the obsolescence constraint of the original part.

Physical compatibility is confirmed within acceptable tolerances: the SRR6603-152ML footprint of 6.60mm x 4.40mm x 3.00mm is dimensionally compatible with the SC3DM-152 specification of 6.50mm x 4.40mm x 3.10mm for standard surface mount assembly processes.

The substitute part delivers improved electrical performance through lower DC resistance (4.2Ohm versus 6Ohm) and tighter inductance tolerance (±20% versus ±30%), reducing circuit losses and improving consistency. Extended operating temperature range (-55°C to 125°C) provides additional thermal margin.

Frequently Asked Questions (FAQ)

Q: Can the SRR6603-152ML directly replace SC3DM-152 in existing designs?

A: Yes, within the specified current operating envelope. The SRR6603-152ML maintains equivalent inductance value, shielded construction, and compatible surface mount footprint. Circuit designers must confirm that application current requirements do not exceed the SRR6603-152ML rating of 120 mA continuous current.

Q: What is the impact of the lower current rating on substitution?

A: The SRR6603-152ML current rating of 120 mA is lower than the SC3DM-152 specification of 220 mA. Applications operating above 120 mA continuous current require circuit redesign or alternative component selection. The saturation current specification of 35mA for the SRR6603-152ML indicates adequate margin for transient conditions within the 120 mA operating envelope.

Q: Are there packaging differences between these parts?

A: The SC3DM-152 uses nonstandard packaging, while the SRR6603-152ML is supplied in standard Tape & Reel format. This improves handling, storage, and automated assembly compatibility for production environments.

Q: How do the DC resistance values affect circuit performance?

A: The SRR6603-152ML DC resistance of 4.2Ohm is lower than the SC3DM-152 maximum of 6Ohm, resulting in reduced power dissipation and improved efficiency. This represents a performance enhancement for the substitute part.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both SC3DM-152 and SRR6603-152ML maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current manufacturing and environmental regulations.