IM04EB100K Equivalent & Substitute Parts

Part Overview

The IM04EB100K is a 10 µH unshielded molded inductor manufactured by Vishay Dale, rated for 290 mA with a maximum DC resistance of 900 mOhm. This through-hole axial component operates across the temperature range of -55°C to 105°C. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Inductance	10 µH
Tolerance	±10%
Current Rating	290 mA
DC Resistance (DCR)	900 mOhm Max
Core Material	Iron
Shielding	Unshielded
Operating Temperature	-55°C to 105°C
Mounting Type	Through Hole
Package	Axial
Physical Dimensions	0.156" Dia x 0.375" L (3.96mm x 9.53mm)

Substitute Part Grouping Explanation

Substitution for the IM04EB100K is determined by strict equivalence in the following electrical and mechanical parameters:

Inductance Value: 10 µH (exact match required)
Tolerance: ±10% (exact match required)
DC Resistance: 900 mOhm Max (exact match required)
Core Material: Iron (exact match required)
Shielding Configuration: Unshielded (exact match required)
Operating Temperature Range: -55°C to 105°C (exact match required)
Mounting Type: Through Hole (exact match required)
Package Style: Axial (exact match required)
Physical Dimensions: 0.156" Dia x 0.375" L (exact match required)

Current rating variations are permitted within the substitute group when all other parameters match, provided the substitute maintains or exceeds the original 290 mA specification. All substitute parts listed below meet these criteria and are manufactured by API Delevan Inc.

Parameter Comparison

Parameter	IM04EB100K (Vishay Dale)	1537R-36K (API Delevan)	1537-36K (API Delevan)	ER1537-36KM (API Delevan)	ER1537-36KP (API Delevan)
Inductance	10 µH	10 µH	10 µH	10 µH	10 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating (Amps)	290 mA	335 mA	335 mA	290 mA	290 mA
DC Resistance (DCR)	900 mOhm Max	900 mOhm Max	900 mOhm Max	900 mOhm Max	900 mOhm Max
Core Material	Iron	Iron	Iron	Iron	Iron
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package	Axial	Axial	Axial	Axial	Axial
Physical Dimensions	0.156" Dia x 0.375" L	0.156" Dia x 0.375" L	0.156" Dia x 0.375" L	0.156" Dia x 0.375" L	0.156" Dia x 0.375" L
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Non-Compliant	RoHS Non-Compliant	RoHS Non-Compliant

Engineering Selection Recommendations

1537R-36K is the primary substitute for new designs requiring RoHS3 compliance. This part maintains all electrical specifications of the original IM04EB100K while offering a higher current rating of 335 mA, providing additional design margin. The part is active and available in Cut Tape packaging.

1537-36K is suitable for applications where military-grade specifications (MIL-PRF-M15305, MS14046) are required. This part is active and available with the highest inventory level (1100 pcs). Note that this variant is RoHS non-compliant.

ER1537-36KM and ER1537-36KP are functionally equivalent alternatives, both active and available in Tape & Reel packaging. These parts match the original 290 mA current rating exactly and are suitable for high-volume production environments. Both variants are RoHS non-compliant.

Selection between these substitutes should be based on compliance requirements (RoHS status), packaging format (Cut Tape vs. Tape & Reel), current rating margin requirements, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 1537R-36K replace IM04EB100K in all applications? A: Yes. The 1537R-36K maintains identical inductance, tolerance, DC resistance, core material, shielding, operating temperature range, mounting type, package style, and physical dimensions. The higher current rating (335 mA vs. 290 mA) provides additional design margin and does not create compatibility issues.

Q: What is the difference between 1537R-36K and 1537-36K? A: Both parts share identical electrical specifications and physical dimensions. The primary differences are product status (1537R-36K is commercial; 1537-36K is military-grade per MIL-PRF-M15305), RoHS compliance (1537R-36K is ROHS3 compliant; 1537-36K is non-compliant), and packaging format (1537R-36K is Cut Tape; 1537-36K is Cut Tape). The 1537-36K is recommended for applications requiring military specifications.

Q: Are ER1537-36KM and ER1537-36KP interchangeable? A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: ER1537-36KM and ER1537-36KP are both supplied in Tape & Reel format, suitable for automated assembly processes. Selection between them should be based on inventory availability and production volume requirements.

Q: Does RoHS compliance affect electrical performance? A: No. RoHS compliance status reflects manufacturing process and material composition but does not alter the electrical characteristics or performance of the inductor. Selection based on RoHS status should be driven by regulatory or customer requirements, not performance considerations.

Q: Can I use a substitute with a higher current rating? A: Yes. The 1537R-36K and 1537-36K, both rated for 335 mA, can replace the 290 mA IM04EB100K without performance degradation. Higher current ratings provide additional design margin and do not create compatibility issues in circuits designed for the original 290 mA specification.

Q: What packaging formats are available? A: 1537R-36K is available in Cut Tape (CT). 1537-36K is available in Cut Tape (CT). ER1537-36KM and ER1537-36KP are available in Tape & Reel (TR) format for high-volume automated assembly.

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