IMS05ER121K Equivalent & Substitute Parts

Part Overview

The IMS05ER121K is a 120 µH shielded molded inductor manufactured by Vishay Dale, rated for 150 mA maximum current with a DC resistance of 3.6Ohm maximum. This component is designed for through-hole axial mounting applications requiring fixed inductance in compact form factors. The part is currently in stock with 714 units available as new original inventory.

Substitute parts become necessary when the primary manufacturer part is unavailable, when supply chain constraints require alternative sourcing, or when design flexibility permits equivalent components that meet identical electrical and mechanical specifications.

Substiute Parts

IMS05ER121K

Vishay DaleIn Stock: 753IMS05ER121K Datasheet

Current PartRFQ

9250A-124-RC

Bourns Inc.In Stock: 10289250A-124-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IMS05ER121K is determined by strict equivalence across the following critical parameters:

• Inductance Value: 120 µH (exact match required)
• Current Rating: 150 mA minimum
• DC Resistance: 3.6Ohm maximum
• Shielding Classification: Shielded construction
• Core Material: Ferrite
• Mounting Configuration: Through hole, axial package
• Physical Dimensions: Compatible with 0.162" diameter x 0.410" length envelope

The Bourns 9250A-124-RC meets all specified electrical and mechanical parameters and qualifies as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The 9250A-124-RC from Bourns Inc. is qualified as a direct substitute for the IMS05ER121K based on electrical parameter equivalence. The substitute part carries ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. Both components are classified as active products with confirmed inventory availability.

Selection between the primary part and substitute should be based on procurement lead time, cost structure, and supplier availability rather than technical performance, as both components satisfy identical functional requirements within the specified parameter envelope.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-124-RC be used as a direct replacement for the IMS05ER121K in existing designs?

A: Yes. Both components share identical inductance (120 µH), current rating (150 mA), and DC resistance (3.6Ohm max) specifications. The axial through-hole package and shielded molded construction are equivalent, permitting direct substitution without circuit redesign.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Inductance value, current rating, DC resistance, and shielding classification are the primary determinants. The 9250A-124-RC matches all four parameters with the IMS05ER121K, establishing equivalence.

Q: Are there physical dimension differences between these parts?

A: The 9250A-124-RC is specified at 0.162" diameter x 0.410" length. The IMS05ER121K dimensions are not provided in the available data. Verification of physical compatibility with PCB footprints and mechanical clearances is recommended prior to implementation.

Q: What compliance certifications apply to the substitute part?

A: The 9250A-124-RC carries ROHS3 compliance and REACH unaffected status. Compliance documentation for the IMS05ER121K is not provided in the available specifications.

Q: Is there a difference in saturation current between these inductors?

A: The 9250A-124-RC specifies a saturation current (Isat) of 95 mA. Saturation current data for the IMS05ER121K is not available. Both parts maintain the 150 mA rated current specification.