IM04EB4R7K Equivalent & Substitute Parts

Part Overview

The IM04EB4R7K is a 4.7 µH unshielded molded inductor manufactured by Vishay Dale, designed for through-hole mounting applications requiring 260 mA current capacity with 2.6Ohm maximum DC resistance. This component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts with matching electrical and mechanical specifications is essential for design continuity and procurement planning.

Substiute Parts

IM04EB4R7K

Vishay DaleIn Stock: 777IM04EB4R7K Datasheet

Current PartRFQ

1537R-28K

API Delevan Inc.In Stock: 7901537R-28K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IM04EB4R7K is based on strict electrical and mechanical parameter matching. The primary substitute, 1537R-28K from API Delevan Inc., qualifies as a direct equivalent based on the following criteria:

• Identical inductance value: 4.7 µH
• Matching tolerance: ±10%
• Equivalent DC resistance: 2.6Ohm Max
• Identical Q factor: 33 @ 7.9MHz
• Matching self-resonant frequency: 90MHz
• Identical operating temperature range: -55°C ~ 125°C
• Same mounting type: Through Hole
• Identical package and case: Axial
• Matching physical dimensions: 0.156" Dia x 0.375" L (3.96mm x 9.53mm)
• Current rating of 294 mA exceeds the minimum requirement of 260 mA
• Equivalent compliance certifications: ROHS3 Compliant, REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

The 1537R-28K from API Delevan Inc. is a qualified substitute for the obsolete IM04EB4R7K. Selection is supported by the following factors:

• All critical electrical parameters match exactly: inductance, tolerance, DC resistance, Q factor, and self-resonant frequency
• Current rating of 294 mA provides margin above the 260 mA requirement
• Physical dimensions and mounting configuration are identical, ensuring direct board-level compatibility
• Active product status ensures ongoing availability and supply chain continuity
• Both components maintain equivalent compliance certifications: ROHS3 Compliant and REACH Unaffected
• Operating temperature range is identical across the full specified range

Frequently Asked Questions (FAQ)

Q: Can the 1537R-28K directly replace the IM04EB4R7K in existing designs?

A: Yes. The 1537R-28K meets all electrical and mechanical specifications of the IM04EB4R7K. Identical inductance, tolerance, DC resistance, Q factor, self-resonant frequency, operating temperature range, and physical dimensions ensure direct compatibility. The higher current rating (294 mA vs. 260 mA) provides additional margin.

Q: What is the significance of the current rating difference between the two parts?

A: The IM04EB4R7K is rated for 260 mA, while the 1537R-28K is rated for 294 mA. The substitute part's higher current rating exceeds the original specification, making it suitable for applications requiring the original 260 mA capacity.

Q: Are there any compliance or certification differences?

A: No. Both components are ROHS3 Compliant and REACH Unaffected, maintaining equivalent regulatory compliance.

Q: Does the packaging format affect substitution?

A: The IM04EB4R7K is supplied in standard through-hole axial packaging. The 1537R-28K is supplied in Cut Tape (CT) packaging. Both maintain identical physical dimensions (0.156" Dia x 0.375" L) and axial case configuration, ensuring board-level compatibility regardless of packaging format.

Q: Why is the IM04EB4R7K listed as obsolete?

A: The IM04EB4R7K has reached end-of-life status with Vishay Dale. The 1537R-28K from API Delevan Inc. is an active product with equivalent specifications, providing a path for design continuity and future procurement.