IM04EB220K Equivalent & Substitute Parts

Part Overview

The IM04EB220K is a 22 µH unshielded molded inductor manufactured by Vishay Dale, rated for 175 mA with a maximum DC resistance of 2.5 Ohm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The IM04EB220K is classified as obsolete. Equivalent and substitute parts from API Delevan Inc. are available to maintain design continuity and ensure supply chain reliability for applications requiring 22 µH inductance with compatible electrical and mechanical specifications.

Substiute Parts

IM04EB220K

Vishay DaleIn Stock: 997IM04EB220K Datasheet

Current PartRFQ

1537R-44K

API Delevan Inc.In Stock: 8271537R-44K Datasheet

DirectRFQ

1537-44K

API Delevan Inc.In Stock: 17291537-44K Datasheet

MFR RecommendedRFQ

ER1537-44KM

API Delevan Inc.In Stock: 1135ER1537-44KM Datasheet

MFR RecommendedRFQ

ER1537-44KP

API Delevan Inc.In Stock: 1193ER1537-44KP Datasheet

MFR RecommendedRFQ

ER1537-44KR

API Delevan Inc.In Stock: 698ER1537-44KR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IM04EB220K are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance: 22 µH (exact match)
• Tolerance: ±10% (exact match)
• DC Resistance: 2.5 Ohm Max (exact match)
• Q @ Frequency: 75 @ 2.5 MHz (exact match)
• Frequency - Self Resonant: 30 MHz (exact match)
• Operating Temperature Range: -55°C ~ 105°C (exact match)
• Mounting Type: Through Hole (exact match)
• Package / Case: Axial (exact match)
• Size / Dimension: 0.156" Dia x 0.375" L (3.96mm x 9.53mm) (exact match)
• Material - Core: Iron (exact match)
• Shielding: Unshielded (exact match)
• Type: Molded (exact match)

Current Rating Consideration: Substitute parts are grouped into two categories based on current rating:

• 175 mA rated parts (ER1537-44KM, ER1537-44KP, ER1537-44KR): Direct electrical equivalents with identical current specifications
• 202 mA rated parts (1537R-44K, 1537-44K): Higher current rating provides additional design margin while maintaining all other electrical parameters

All substitute parts maintain identical inductance, tolerance, DC resistance, Q factor, self-resonant frequency, and temperature operating range as the original IM04EB220K.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliant Applications: The 1537R-44K is the primary substitute for IM04EB220K when RoHS3 compliance is required. This part maintains all electrical specifications while providing a higher current rating of 202 mA, offering additional design margin. It is available in Tape & Reel packaging and carries active product status.

For Military or Non-RoHS Applications: The 1537-44K is specified as a military-grade inductor conforming to MIL-PRF-M15305 and MS14046 standards. This part is available in Cut Tape packaging and is suitable for applications where military specifications or non-RoHS compliance is acceptable. Current rating is 202 mA.

For Direct Current Rating Match (175 mA): The ER1537-44KM, ER1537-44KP, and ER1537-44KR provide exact current rating equivalence to the original IM04EB220K at 175 mA. These parts are available in Tape & Reel packaging with active product status. Selection among these three variants depends on packaging and inventory requirements, as all three maintain identical electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 202 mA rated substitute in place of the 175 mA IM04EB220K?

A: Yes. The 1537R-44K and 1537-44K both maintain identical inductance, tolerance, DC resistance, Q factor, and self-resonant frequency specifications. The higher current rating of 202 mA provides additional design margin and does not affect compatibility with circuits designed for 175 mA operation.

Q: What is the difference between the ER1537-44KM, ER1537-44KP, and ER1537-44KR?

A: These three parts are electrically and mechanically identical. All three are 22 µH inductors with 175 mA current rating, 2.5 Ohm DC resistance, and identical physical dimensions. The designations reflect different manufacturing or packaging batches. Selection can be based on inventory availability or specific packaging requirements.

Q: Is the 1537-44K suitable for new designs?

A: The 1537-44K is active and available. However, it is RoHS non-compliant and specified to military standards (MIL-PRF-M15305, MS14046). For new designs requiring RoHS3 compliance, the 1537R-44K is the recommended choice.

Q: Are all substitute parts available in the same packaging as the original IM04EB220K?

A: The original IM04EB220K packaging specification is not provided in the data. The substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) packaging. Verify packaging requirements for your assembly process before selection.

Q: Can I mix different substitute part numbers in the same design?

A: All substitute parts maintain identical electrical specifications for inductance, tolerance, DC resistance, Q factor, and self-resonant frequency. Physical dimensions are identical across all parts. Mixing is permissible from an electrical and mechanical standpoint, though procurement and traceability practices should be considered.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the identical temperature range of -55°C to 105°C, matching the original IM04EB220K specification.