IM04EB5R6K Fixed Inductor 5.6µH Equivalent & Substitute Parts

Part Overview

The IM04EB5R6K is a 5.6 µH unshielded molded inductor manufactured by Vishay Dale, designed for through-hole axial mounting applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part delivers 495 mA current rating with 320mOhm maximum DC resistance across an operating temperature range of -55°C to 105°C.

Key Parameters

Parameter	Value
Inductance	5.6 µH
Tolerance	±10%
Current Rating	495 mA
DC Resistance (DCR)	320mOhm Max
Core Material	Iron
Shielding	Unshielded
Q @ Frequency	45 @ 7.9MHz
Frequency - Self Resonant	60MHz
Operating Temperature	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.156" Dia x 0.375" L (3.96mm x 9.53mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the IM04EB5R6K is determined by the following critical parameters:

Inductance Value: 5.6 µH (exact match required)
Tolerance: ±10% (exact match required)
DC Resistance: 320mOhm Max (exact match required)
Current Rating: Minimum 495 mA (equal or higher acceptable)
Core Material: Iron (exact match required)
Shielding: Unshielded (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Axial (exact match required)
Physical Dimensions: 0.156" Dia x 0.375" L (exact match required)
Q @ Frequency: 45 @ 7.9MHz (exact match required)
Frequency - Self Resonant: 60MHz (exact match required)

All substitute parts listed meet these criteria. Variations in current rating above the minimum threshold and product status (active vs. obsolete) do not disqualify substitution eligibility.

Parameter Comparison

Parameter	IM04EB5R6K (Vishay Dale)	1537R-30K (API Delevan)	1537-30K (Delevan)	ER1537-30KM (API Delevan)	ER1537-30KP (API Delevan)	ER1537-30KR (API Delevan)
Inductance	5.6 µH	5.6 µH	5.6 µH	5.6 µH	5.6 µH	5.6 µH
Tolerance	±10%	±10%	±10%	±10%	±10%	±10%
Current Rating (Amps)	495 mA	565 mA	565 mA	495 mA	495 mA	495 mA
DC Resistance (DCR)	320mOhm Max	320mOhm Max	320mOhm Max	320mOhm Max	320mOhm Max	320mOhm Max
Core Material	Iron	Iron	Iron	Iron	Iron	Iron
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded
Q @ Frequency	45 @ 7.9MHz	45 @ 7.9MHz	45 @ 7.9MHz	45 @ 7.9MHz	45 @ 7.9MHz	45 @ 7.9MHz
Frequency - Self Resonant	60MHz	60MHz	60MHz	60MHz	60MHz	60MHz
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial	Axial	Axial
Size / Dimension	0.156" Dia x 0.375" L (3.96mm x 9.53mm)	0.156" Dia x 0.375" L (3.96mm x 9.53mm)	0.156" Dia x 0.375" L (3.96mm x 9.53mm)	0.156" Dia x 0.375" L (3.96mm x 9.53mm)	0.156" Dia x 0.375" L (3.96mm x 9.53mm)	0.156" Dia x 0.375" L (3.96mm x 9.53mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

All listed substitute parts meet the electrical and mechanical specifications of the IM04EB5R6K. Selection should be based on compliance requirements and product availability:

For RoHS3 Compliant Applications: The 1537R-30K (API Delevan Inc.) is the only active substitute that maintains ROHS3 compliance. This part offers increased current rating capacity (565 mA vs. 495 mA), providing additional design margin while maintaining all other electrical parameters.

For Military or Non-Compliant Applications: The 1537-30K (Delevan), ER1537-30KM, ER1537-30KP, and ER1537-30KR (API Delevan Inc.) are active alternatives. The ER1537-30KR carries military qualification per MIL-PRF-39010/07, and the 1537-30K carries military qualification per MIL-PRF-M15305 and MS14046 standards.

Current Rating Consideration: The 1537R-30K and 1537-30K both support 565 mA, exceeding the original 495 mA specification. The ER1537 series (ER1537-30KM, ER1537-30KP, ER1537-30KR) maintains the original 495 mA rating.

Frequently Asked Questions (FAQ)

Q: Can I use 1537R-30K as a direct replacement for IM04EB5R6K?

A: Yes. The 1537R-30K meets all electrical and mechanical parameters. It is an active product with ROHS3 compliance and higher current capacity (565 mA), making it suitable for direct substitution in RoHS-compliant designs.

Q: What is the difference between the ER1537 series parts (ER1537-30KM, ER1537-30KP, ER1537-30KR)?

A: All three ER1537 variants share identical electrical specifications and current rating (495 mA). They differ in packaging designation and military qualification status. ER1537-30KR carries MIL-PRF-39010/07 qualification. All are active products with RoHS non-compliant status.

Q: Why does 1537-30K show RoHS non-compliant status while 1537R-30K is ROHS3 compliant?

A: These are distinct product lines from Delevan and API Delevan Inc. The 1537-30K carries military qualification (MIL-PRF-M15305, MS14046) and is RoHS non-compliant. The 1537R-30K is the commercial RoHS3-compliant variant. Selection depends on application compliance requirements.

Q: Are all substitute parts physically identical to IM04EB5R6K?

A: Yes. All substitute parts share the same physical dimensions (0.156" Dia x 0.375" L / 3.96mm x 9.53mm), axial package configuration, and through-hole mounting type, ensuring PCB compatibility without layout modifications.

Q: Can I use parts with higher current ratings (565 mA) in place of the 495 mA original?

A: Yes. Higher current rating capacity does not disqualify substitution. The 1537R-30K and 1537-30K both support 565 mA and are electrically and mechanically compatible with designs specified for 495 mA operation.

Q: Which substitute should I choose for new designs?

A: For new designs requiring RoHS compliance, select 1537R-30K. For military applications, select 1537-30K (MIL-PRF-M15305/MS14046) or ER1537-30KR (MIL-PRF-39010/07). All are active products with established supply chains.

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