ASPI-1040HI-R16M Equivalent & Substitute Parts

Part Overview

The ASPI-1040HI-R16M is a 160 nH unshielded molded inductor manufactured by Abracon LLC, rated for 40 A continuous current with a maximum DC resistance of 0.65 mOhm. This component is designed for surface mount applications in high-current power delivery and filtering circuits. The part is currently obsolete, making substitute components necessary for new designs and ongoing production requirements.

Substiute Parts

ASPI-1040HI-R16M

Abracon LLCIn Stock: 1093ASPI-1040HI-R16M Datasheet

Current PartRFQ

ASPIAIG-F1040-R15N-T

Abracon LLCIn Stock: 3746ASPIAIG-F1040-R15N-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ASPI-1040HI-R16M is determined by the following critical parameters:

• Inductance Value: The substitute must operate within the ±20% tolerance band of the original 160 nH specification
• Current Rating: The substitute must support the required 40 A continuous current without exceeding saturation limits
• DC Resistance: The substitute DCR must not exceed the original 0.65 mOhm maximum to maintain circuit efficiency
• Saturation Current: The substitute must maintain adequate margin above the operating current
• Mounting and Package Compatibility: Surface mount configuration with compatible footprint dimensions
• Environmental Compliance: RoHS3 compliance and MSL rating must be maintained

The ASPIAIG-F1040-R15N-T qualifies as a substitute based on these parameters. While the inductance is reduced to 150 nH (within the ±20% tolerance window when considering the original part's tolerance band), the current rating increases to 43 A, DC resistance improves to 0.6 mOhm, and saturation current remains at 75 A. The substitute maintains surface mount compatibility and full environmental compliance.

Parameter Comparison

Engineering Selection Recommendations

The ASPIAIG-F1040-R15N-T is the manufacturer-recommended substitute for the obsolete ASPI-1040HI-R16M. Selection of this substitute is supported by the following factors:

• Active Product Status: The substitute is an active product with confirmed inventory availability (3735 pcs), ensuring long-term supply chain continuity
• Compliance Certifications: Both parts maintain ROHS3 compliance and MSL 1 rating; the substitute adds AEC-Q200 automotive qualification
• Electrical Performance: The substitute delivers improved DC resistance (0.6 mOhm vs 0.65 mOhm) and higher current rating (43 A vs 40 A) while maintaining saturation current at 75 A
• Mechanical Compatibility: Package dimensions are nearly identical with only minor reductions in length (0.433" vs 0.439") and height (0.157" vs 0.167"), compatible with existing PCB layouts
• Inductance Specification: The 150 nH value falls within acceptable tolerance bands for applications designed around the original 160 nH specification

The substitute introduces shielding, which reduces electromagnetic interference and may improve performance in noise-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the ASPIAIG-F1040-R15N-T directly replace the ASPI-1040HI-R16M in existing designs?

A: Yes. The substitute maintains compatible surface mount package dimensions, electrical ratings, and environmental compliance. The 10 nH inductance reduction (150 nH vs 160 nH) is within the ±20% tolerance specification of both parts and acceptable for most power delivery and filtering applications.

Q: What is the impact of the shielded design in the substitute?

A: The ASPIAIG-F1040-R15N-T features shielding, whereas the original is unshielded. Shielding reduces radiated electromagnetic interference and improves performance in sensitive analog and RF circuits. This is a functional improvement with no negative impact on compatibility.

Q: Are there temperature range differences between the parts?

A: The original part operates from -55°C to 125°C, while the substitute operates from -40°C to 125°C. For applications requiring operation below -40°C, the original specification must be maintained. For standard industrial and commercial temperature ranges, the substitute is fully compatible.

Q: What is the significance of AEC-Q200 certification on the substitute?

A: AEC-Q200 is an automotive qualification standard. The substitute's AEC-Q200 rating indicates compliance with automotive reliability and quality standards, making it suitable for automotive and high-reliability applications. This certification is not present on the original part.

Q: How do the DC resistance values compare?

A: The substitute offers lower DC resistance (0.6 mOhm vs 0.65 mOhm), resulting in reduced power dissipation and improved efficiency in high-current applications. This represents a performance improvement over the original specification.

Q: Is the packaging format compatible?

A: The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly. The original part packaging format is not specified in the available data. Confirm packaging requirements with your procurement process.