IM04EB2R7K Equivalent & Substitute Parts

Part Overview

The IM04EB2R7K is a 2.7 µH unshielded molded inductor manufactured by Vishay Dale, designed for through-hole axial mounting applications. This component features a 385 mA current rating and 1.2Ohm maximum DC resistance, operating across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

IM04EB2R7K

Vishay DaleIn Stock: 1071IM04EB2R7K Datasheet

Current PartRFQ

1537R-22K

API Delevan Inc.In Stock: 9791537R-22K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IM04EB2R7K is based on strict electrical and mechanical parameter matching within the allowed tolerances for this inductor category. The primary substitute, 1537R-22K from API Delevan Inc., qualifies as a direct equivalent based on the following criteria:

Critical Matching Parameters:

• Inductance value: 2.7 µH (identical)
• Inductance tolerance: ±10% (identical)
• DC Resistance: 1.2Ohm Max (identical)
• Q @ Frequency: 33 @ 7.9MHz (identical)
• Self Resonant Frequency: 120MHz (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• Mounting Type: Through Hole Axial (identical)
• Physical Dimensions: 0.156" Dia x 0.375" L (identical)
• Core Material: Phenolic (identical)
• Shielding: Unshielded (identical)

The 1537R-22K demonstrates a higher current rating (430 mA versus 385 mA), which represents an improvement in thermal headroom without affecting circuit performance. Both parts maintain identical electrical characteristics at the test frequency and across the full operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 1537R-22K from API Delevan Inc. is the qualified substitute for the obsolete IM04EB2R7K. Selection of this alternative is supported by:

Product Status: The 1537R-22K maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete IM04EB2R7K.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements without modification to existing designs.

Electrical Equivalence: All critical electrical parameters—inductance, tolerance, DC resistance, Q factor, and self-resonant frequency—are identical between the two parts. The increased current rating of the 1537R-22K (430 mA versus 385 mA) provides additional thermal margin without introducing any performance degradation.

Mechanical Compatibility: Identical physical dimensions, axial through-hole mounting configuration, and phenolic core construction ensure direct mechanical and thermal compatibility in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the 1537R-22K be used as a direct replacement for the IM04EB2R7K without circuit modification?

A: Yes. The 1537R-22K is electrically and mechanically equivalent to the IM04EB2R7K across all specified parameters. No circuit modifications are required for substitution.

Q: What is the significance of the higher current rating on the 1537R-22K?

A: The 1537R-22K is rated for 430 mA compared to the IM04EB2R7K's 385 mA. This represents improved thermal headroom and does not affect circuit operation. If your application operates at or below 385 mA, the higher rating introduces no risk.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components measure 0.156" diameter by 0.375" length (3.96mm x 9.53mm) and use identical axial through-hole mounting. PCB layouts require no modification.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the IM04EB2R7K and 1537R-22K are ROHS3 compliant and REACH unaffected, satisfying equivalent environmental and regulatory requirements.

Q: Why is the IM04EB2R7K listed as obsolete?

A: Obsolete status indicates that Vishay Dale has discontinued production of this part. The 1537R-22K from API Delevan Inc. provides functional continuity for designs currently using the IM04EB2R7K.

Q: Are there any differences in packaging between these parts?

A: The IM04EB2R7K is supplied in standard through-hole format. The 1537R-22K is supplied in Cut Tape (CT) packaging. Both are suitable for through-hole assembly; packaging format does not affect component performance or compatibility.