ASPI-0316S-2R7N-T3 Equivalent & Substitute Parts

Part Overview

The ASPI-0316S-2R7N-T3 is a 2.7 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 1.26 A maximum current with 123mOhm DC resistance. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. Substitute parts must maintain the same inductance value, shielding characteristics, and surface mount compatibility while meeting current and thermal requirements of the target application.

Substiute Parts

ASPI-0316S-2R7N-T3

Abracon LLCIn Stock: 882ASPI-0316S-2R7N-T3 Datasheet

Current PartRFQ

1226AS-H-2R7M=P2

Murata ElectronicsIn Stock: 9901226AS-H-2R7M=P2 Datasheet

MFR RecommendedRFQ

CDRH2D14NP-2R7NC

Sumida America Components Inc.In Stock: 1118CDRH2D14NP-2R7NC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0316S-2R7N-T3 is determined by the following critical parameters:

• Inductance Value: Must be 2.7 µH (tolerance variations acceptable within application limits)
• Shielding: Must be shielded to maintain electromagnetic isolation
• Core Material: Ferrite core required for performance consistency
• Mounting Type: Surface mount configuration mandatory
• Current Rating: Must meet or exceed 1.26 A application requirement
• DC Resistance: Lower DCR values are acceptable; higher values require thermal analysis
• Operating Temperature: Must support -25°C ~ 100°C range or application-specific subset
• Compliance: ROHS3 compliance and MSL rating required

Two active substitute parts meet these criteria: the Murata Electronics 1226AS-H-2R7M=P2 and the Sumida America Components Inc. CDRH2D14NP-2R7NC. Both maintain the 2.7 µH inductance specification, ferrite shielded construction, and surface mount package while offering improved current ratings or reduced DC resistance compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

1226AS-H-2R7M=P2 (Murata Electronics)

This substitute offers the highest current rating at 2 A with the lowest DC resistance at 63mOhm Max, providing superior thermal performance and headroom above the original 1.26 A specification. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating. The inductance tolerance is tightened to ±20%, improving circuit performance predictability. Operating temperature range is -40°C ~ 85°C; applications requiring operation above 85°C must evaluate thermal margins. Footprint dimensions are 3.20mm x 3.00mm with 1.50mm seated height, compatible with standard surface mount assembly processes.

CDRH2D14NP-2R7NC (Sumida America Components Inc.)

This substitute maintains the original ±30% inductance tolerance and extends the operating temperature range to -40°C ~ 100°C, matching the upper thermal limit of the original part. Current rating of 1.4 A exceeds the original 1.26 A specification with saturation current of 1.35 A. DC resistance at 106mOhm Max is slightly lower than the original 123mOhm, reducing power dissipation. The part is active with ROHS3 compliance and unlimited moisture sensitivity rating. Footprint dimensions are 3.00mm x 3.00mm with 1.55mm seated height, requiring verification of PCB layout compatibility due to reduced lateral dimensions.

Both substitutes are suitable for applications requiring the ASPI-0316S-2R7N-T3. Selection between them depends on thermal requirements, tolerance specifications, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the 1226AS-H-2R7M=P2 be used in applications requiring operation above 85°C?

A: The 1226AS-H-2R7M=P2 is rated to 85°C maximum. Applications requiring operation to 100°C must use the CDRH2D14NP-2R7NC, which maintains the full -40°C ~ 100°C range. Thermal analysis of the specific application is required to confirm component reliability at elevated temperatures.

Q: What is the impact of different DC resistance values on circuit performance?

A: The 1226AS-H-2R7M=P2 has 63mOhm DCR compared to the original 123mOhm, reducing resistive losses by approximately 49%. The CDRH2D14NP-2R7NC has 106mOhm DCR, reducing losses by approximately 14%. Lower DCR reduces power dissipation and heat generation. Circuit simulations should account for these resistance differences in applications sensitive to inductor losses.

Q: Are the physical dimensions compatible with the original PCB layout?

A: The 1226AS-H-2R7M=P2 maintains the original 3.20mm length and 1.50mm height but reduces width to 3.00mm. The CDRH2D14NP-2R7NC reduces both length and width to 3.00mm x 3.00mm with 1.55mm height. PCB footprints must be verified for compatibility. Smaller dimensions may allow layout optimization but require confirmation that solder pad patterns accommodate the substitute part geometry.

Q: What is the significance of inductance tolerance differences?

A: The original ASPI-0316S-2R7N-T3 and CDRH2D14NP-2R7NC both specify ±30% tolerance. The 1226AS-H-2R7M=P2 specifies ±20% tolerance, providing tighter inductance control. Applications with strict inductance requirements benefit from the improved tolerance. Circuit designs with wide tolerance margins are unaffected by this difference.

Q: Are all substitutes compliant with current regulatory requirements?

A: Both substitute parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original part's compliance status. All three parts are classified as REACH Unaffected. Substitutes are suitable for applications requiring current regulatory compliance.