SPM4015T-R68M Equivalent & Substitute Parts

Part Overview

The SPM4015T-R68M is a 680 nH shielded drum core wirewound inductor manufactured by TDK Corporation in a nonstandard surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SPM4015T-R68M

TDK CorporationIn Stock: 5302SPM4015T-R68M Datasheet

Current PartRFQ

SPM4015T-R68M-LR

TDK CorporationIn Stock: 10465SPM4015T-R68M-LR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPM4015T-R68M is determined by the following critical parameters:

• Inductance Value: 680 nH with ±20% tolerance
• Shielding Configuration: Shielded construction required
• Core Material: Metal core
• Physical Dimensions: 0.173" L x 0.161" W (4.40mm x 4.10mm) with maximum seated height of 0.059" (1.50mm)
• Mounting Technology: Surface mount
• Operating Temperature Range: -40°C to 125°C
• Test Frequency: 100 kHz inductance measurement
• Compliance: ROHS3 compliant, MSL Level 1

The SPM4015T-R68M-LR qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while offering enhanced current handling specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SPM4015T-R68M-LR is the appropriate substitute for the obsolete SPM4015T-R68M. Both components are manufactured by TDK Corporation and maintain identical electrical specifications (680 nH inductance at ±20% tolerance) and physical dimensions (4.40mm x 4.10mm x 1.50mm maximum height). Both meet ROHS3 compliance and MSL Level 1 requirements.

The SPM4015T-R68M-LR offers the additional advantage of active product status, ensuring continued availability and supply chain stability. The substitute part provides specified current ratings (6.1 A nominal, 9 A saturation) and DC resistance (19.8 mOhm maximum), which were not documented for the original part.

Frequently Asked Questions (FAQ)

Q: Can the SPM4015T-R68M-LR be used as a direct replacement for the SPM4015T-R68M?

A: Yes. Both parts share identical inductance values (680 nH), tolerance specifications (±20%), shielding configuration, core material, physical dimensions, and operating temperature range. The substitute maintains full compatibility with existing PCB layouts and circuit designs.

Q: What is the primary advantage of switching to the SPM4015T-R68M-LR?

A: The SPM4015T-R68M-LR carries active product status, ensuring long-term availability and supply continuity. The original part is classified as obsolete.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both components measure 0.173" L x 0.161" W (4.40mm x 4.10mm) with a maximum seated height of 0.059" (1.50mm), ensuring identical PCB footprint compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SPM4015T-R68M and SPM4015T-R68M-LR are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What additional specifications are provided for the SPM4015T-R68M-LR?

A: The substitute part includes documented current ratings (6.1 A nominal, 9 A saturation) and DC resistance (19.8 mOhm maximum), which provide additional design margin information not available for the original part.