IM02EB100K Equivalent & Substitute Parts

Part Overview

The IM02EB100K is a 10 µH unshielded molded inductor manufactured by Vishay Dale, rated for 130 mA maximum current with 3.7Ohm DC resistance. This through-hole axial component operates across -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary for new designs and production continuity.

Key Parameters

Parameter	Value
Inductance	10 µH
Tolerance	±10%
Current Rating	130 mA
DC Resistance (DCR)	3.7Ohm Max
Q @ Frequency	55 @ 7.9MHz
Frequency - Self Resonant	50MHz
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Material - Core	Iron
Shielding	Unshielded
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the IM02EB100K is determined by strict equivalence across the following electrical and mechanical parameters:

Inductance Value: 10 µH (exact match required)
Tolerance: ±10% (matching specification)
DC Resistance: Maximum 3.7Ohm (substitute must not exceed this value)
Current Rating: Minimum 130 mA (substitute must meet or exceed this requirement)
Operating Temperature Range: -55°C ~ 105°C (full range compatibility)
Mounting Type: Through Hole Axial (physical compatibility)
Package Dimensions: 0.095" Dia x 0.250" L (2.41mm x 6.35mm) (board layout compatibility)
Core Material: Iron (electrical performance equivalence)
Shielding: Unshielded (EMI characteristics)

The substitute parts listed below satisfy all these criteria and are sourced from API Delevan Inc., an active manufacturer.

Parameter Comparison

Parameter	IM02EB100K (Vishay Dale)	1025R-44K (API Delevan)	1025-44K (API Delevan)
Inductance	10 µH	10 µH	10 µH
Tolerance	±10%	±10%	±10%
Current Rating (Amps)	130 mA	144 mA	144 mA
DC Resistance (DCR)	3.7Ohm Max	3.3Ohm Max	3.3Ohm Max
Q @ Frequency	55 @ 7.9MHz	55 @ 7.9MHz	55 @ 7.9MHz
Frequency - Self Resonant	50MHz	50MHz	50MHz
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)	0.095" Dia x 0.250" L (2.41mm x 6.35mm)	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Material - Core	Iron	Iron	Iron
Shielding	Unshielded	Unshielded	Unshielded
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
Packaging	-	Bulk	Cut Tape (CT)

Engineering Selection Recommendations

Both API Delevan substitute parts meet the electrical and mechanical requirements for direct replacement of the IM02EB100K. Selection between them depends on compliance and packaging requirements:

1025R-44K (Bulk Packaging): This part is ROHS3 compliant and suitable for applications requiring environmental compliance. It provides improved current rating (144 mA vs. 130 mA) and lower DC resistance (3.3Ohm vs. 3.7Ohm), resulting in reduced power dissipation.

1025-44K (Cut Tape Packaging, Military Series): This part is qualified to MIL-PRF-M15305 and MS75084 military standards. It is RoHS non-compliant and suitable for military, aerospace, or legacy system applications where military qualification is required. It also provides the same electrical improvements as the 1025R-44K variant.

For new commercial designs requiring RoHS compliance, the 1025R-44K is the appropriate selection. For military or legacy applications, the 1025-44K provides the necessary qualification and standards compliance.

Frequently Asked Questions (FAQ)

Q: Can the 1025R-44K or 1025-44K be used as direct replacements for the IM02EB100K?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical inductance (10 µH), tolerance (±10%), operating temperature range (-55°C ~ 105°C), physical dimensions (0.095" Dia x 0.250" L), and mounting type (through-hole axial). The substitute parts exceed the minimum current rating requirement and provide lower DC resistance.

Q: What is the difference between the 1025R-44K and 1025-44K?

A: Both parts are electrically identical. The primary differences are packaging format (bulk vs. cut tape) and compliance status. The 1025R-44K is ROHS3 compliant for commercial applications. The 1025-44K is qualified to military standards MIL-PRF-M15305 and MS75084 and is RoHS non-compliant, making it suitable for military and aerospace applications.

Q: Will the improved current rating and lower DC resistance of the substitute parts affect circuit performance?

A: The higher current rating (144 mA vs. 130 mA) and lower DC resistance (3.3Ohm vs. 3.7Ohm) of the substitute parts are improvements that do not negatively impact circuit performance. These characteristics reduce power dissipation and provide additional design margin.

Q: Are the physical dimensions identical between the IM02EB100K and substitute parts?

A: Yes. All three parts share identical physical dimensions of 0.095" Dia x 0.250" L (2.41mm x 6.35mm) and are packaged in axial through-hole format, ensuring direct board-level compatibility without layout modifications.

Q: Which substitute part should be selected for new designs?

A: For new commercial designs, select the 1025R-44K due to its ROHS3 compliance and active product status. For military, aerospace, or legacy system applications, select the 1025-44K based on its military qualification and standards compliance.

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