SPM3012T-2R2M Equivalent & Substitute Parts

Part Overview

The SPM3012T-2R2M is a 2.2 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 2.2 A continuous current with a maximum DC resistance of 115mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute part SPM3012T-2R2M-LR provides functional continuity with improved electrical performance characteristics while maintaining mechanical and thermal compatibility.

Substiute Parts

SPM3012T-2R2M

TDK CorporationIn Stock: 21001SPM3012T-2R2M Datasheet

Current PartRFQ

SPM3012T-2R2M-LR

TDK CorporationIn Stock: 67043SPM3012T-2R2M-LR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPM3012T-2R2M is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match or Exceed):

• Inductance value: 2.2 µH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Current rating: minimum 2.2 A continuous
• Saturation current: minimum 2.5 A
• DC resistance: maximum 115 mOhm

Mechanical Parameters (Must Match):

• Core type: Shielded drum core, wirewound
• Core material: Metal
• Mounting type: Surface mount
• Physical dimensions: 0.126" L x 0.118" W (3.20 mm x 3.00 mm)
• Height seated: 0.047" (1.20 mm)

Environmental & Compliance Parameters (Must Match or Exceed):

• Operating temperature range: -40°C to 125°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)
• REACH unaffected status

The SPM3012T-2R2M-LR satisfies all substitution criteria with improved performance in current rating and saturation current, while maintaining identical mechanical form factor and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The SPM3012T-2R2M-LR is the direct active equivalent for the obsolete SPM3012T-2R2M. Selection is based on the following engineering criteria:

Product Status: The SPM3012T-2R2M-LR maintains active production status with TDK Corporation, ensuring long-term availability and supply chain continuity. The original SPM3012T-2R2M is obsolete and subject to inventory depletion.

Compliance & Certifications: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited), ensuring regulatory equivalence for applications requiring environmental compliance documentation.

Electrical Performance: The SPM3012T-2R2M-LR provides superior electrical characteristics with increased continuous current rating (2.6 A versus 2.2 A), higher saturation current (3.7 A versus 2.5 A), and reduced DC resistance (102.3 mOhm versus 115 mOhm maximum). These improvements enhance thermal performance and reduce power dissipation in equivalent circuit applications.

Mechanical & Thermal Compatibility: Identical physical dimensions, mounting type, and operating temperature range (-40°C to 125°C) ensure direct PCB footprint compatibility and thermal performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the SPM3012T-2R2M-LR be used as a direct replacement for the SPM3012T-2R2M?

A: Yes. The SPM3012T-2R2M-LR is electrically and mechanically equivalent to the SPM3012T-2R2M with improved performance specifications. Identical inductance value, tolerance, core type, shielding, physical dimensions, and operating temperature range ensure direct substitution. The substitute part exceeds the original specifications in current rating, saturation current, and DC resistance performance.

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

A: The primary differences are product status and electrical performance. The SPM3012T-2R2M-LR is active production while the SPM3012T-2R2M is obsolete. The SPM3012T-2R2M-LR provides higher continuous current rating (2.6 A versus 2.2 A), higher saturation current (3.7 A versus 2.5 A), and lower DC resistance (102.3 mOhm versus 115 mOhm maximum). All other parameters remain equivalent.

Q: Are there packaging differences between these parts?

A: The SPM3012T-2R2M-LR is supplied in Tape & Reel (TR) packaging, while the original SPM3012T-2R2M packaging format is not specified. Both parts share identical nonstandard package / case designation and physical dimensions, ensuring PCB compatibility regardless of packaging format.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SPM3012T-2R2M and SPM3012T-2R2M-LR are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Environmental and regulatory compliance is equivalent between the two parts.

Q: What is the inductance test frequency for these parts?

A: Both parts are tested at 100 kHz inductance test frequency, ensuring measurement consistency and equivalence in circuit applications operating at or near this frequency.