IMS05EB100K Equivalent & Substitute Parts

Part Overview

The IMS05EB100K is a 10 µH shielded molded inductor manufactured by Vishay Dale, rated for 220 mA with a maximum DC resistance of 1.62Ohm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -55°C to 105°C and is ROHS3 compliant. Substitute parts maintain electrical and mechanical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value
Inductance	10 µH
Tolerance	±10%
Current Rating	220 mA
DC Resistance (DCR)	1.62Ohm Max
Shielding	Shielded
Q @ Frequency	50 @ 7.9MHz
Frequency - Self Resonant	46MHz
Operating Temperature	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)

Substitute Part Grouping Explanation

Substitution eligibility for the IMS05EB100K is determined by the following critical parameters:

Inductance value: 10 µH (exact match required)
Tolerance: ±10% (exact match required)
Current Rating: 220 mA (minimum requirement)
DC Resistance: 1.62Ohm Max (maximum allowable)
Shielding: Shielded (electromagnetic containment requirement)
Mounting Type: Through Hole (PCB assembly compatibility)
Package / Case: Axial (form factor compatibility)
Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm) (board layout compatibility)

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in core material (Iron Powder, Ferrite, Iron), operating temperature range, RoHS compliance status, and product lifecycle status are secondary considerations that do not affect functional substitution within the specified parameters.

Parameter Comparison

Parameter	IMS05EB100K (Vishay Dale)	9250A-103-RC (Bourns Inc.)	ER1641-103KM (API Delevan Inc.)	ER1641-103KP (API Delevan Inc.)	ER1641-103KR (API Delevan Inc.)
Inductance	10 µH	10 µH	10 µH	10 µH	10 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating (Amps)	220 mA	220 mA	220 mA	220 mA	220 mA
DC Resistance (DCR)	1.62Ohm Max	1.62Ohm Max	1.62Ohm Max	1.62Ohm Max	1.62Ohm Max
Q @ Freq	50 @ 7.9MHz	50 @ 7.9MHz	50 @ 7.9MHz	50 @ 7.9MHz	50 @ 7.9MHz
Frequency - Self Resonant	46MHz	46MHz	46MHz	46MHz	46MHz
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Inductance Frequency - Test	7.9 MHz	7.9 MHz	7.9 MHz	7.9 MHz	7.9 MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Shielding	Shielded	Shielded	Shielded	Shielded	Unshielded
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

Primary Recommendation: 9250A-103-RC (Bourns Inc.)

The 9250A-103-RC is the preferred substitute for the obsolete IMS05EB100K. This part maintains full electrical and mechanical compatibility across all critical parameters. The 9250A-103-RC offers an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C), ROHS3 compliance matching the original specification, and active product status ensuring long-term availability. Current inventory of 1849 units supports immediate procurement.

Secondary Recommendations: ER1641-103KM and ER1641-103KP (API Delevan Inc.)

Both ER1641-103KM and ER1641-103KP maintain full electrical and mechanical compatibility with the IMS05EB100K. These parts are active products with adequate inventory (834 and 746 units respectively) and operate within the original temperature specification. Both are supplied in Tape & Reel packaging. Note that these parts are RoHS non-compliant; selection should account for regulatory requirements in the target application.

Alternative Consideration: ER1641-103KR (API Delevan Inc.)

The ER1641-103KR is electrically equivalent but differs in shielding configuration (unshielded versus shielded). This part is suitable only for applications where electromagnetic shielding is not a functional requirement. The unshielded design may introduce EMI/RFI considerations in sensitive circuits. This part is RoHS non-compliant and operates within the original temperature specification.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-103-RC directly replace the IMS05EB100K without circuit modification?

A: Yes. The 9250A-103-RC maintains identical inductance (10 µH), tolerance (±10%), current rating (220 mA), DC resistance (1.62Ohm Max), Q factor (50 @ 7.9MHz), self-resonant frequency (46MHz), and physical dimensions (0.162" Dia x 0.410" L). The extended operating temperature range (-55°C to 125°C) provides additional margin. Direct substitution is valid for all applications within the original operating parameters.

Q: What is the difference between the ER1641-103KM and ER1641-103KP?

A: Both parts are electrically and mechanically identical. The designation difference reflects packaging or manufacturing lot variations within the API Delevan ER1641 series. Both maintain the same electrical specifications and are supplied in Tape & Reel packaging.

Q: Why is the ER1641-103KR listed as a substitute if it is unshielded?

A: The ER1641-103KR maintains all electrical parameters (inductance, tolerance, current rating, DC resistance, Q factor, self-resonant frequency) and physical dimensions required for mechanical compatibility. However, the unshielded configuration eliminates electromagnetic containment. This part is suitable only for applications where shielding is not functionally required. Designs requiring shielded inductors should select the 9250A-103-RC, ER1641-103KM, or ER1641-103KP.

Q: Are there temperature range differences that affect substitution?

A: The 9250A-103-RC operates from -55°C to 125°C, providing 20°C additional margin above the original IMS05EB100K specification (-55°C to 105°C). The ER1641 series parts operate within the original -55°C to 105°C range. For applications operating near the upper temperature limit, the 9250A-103-RC offers enhanced thermal margin.

Q: What is the impact of RoHS compliance differences?

A: The 9250A-103-RC is ROHS3 compliant, matching the original IMS05EB100K specification. The ER1641 series parts (ER1641-103KM, ER1641-103KP, ER1641-103KR) are RoHS non-compliant. Selection should account for regulatory requirements in the target market and end-use application. Applications subject to RoHS directives require the 9250A-103-RC.

Q: Can core material differences (Iron Powder, Ferrite, Iron) affect circuit performance?

A: All substitute parts maintain the specified electrical parameters at the test frequency (7.9 MHz) and across the operating range. Core material differences are internal design variations that do not affect the external electrical characteristics required for substitution. The inductance value, tolerance, Q factor, and self-resonant frequency remain constant regardless of core material.

Q: What packaging options are available for these substitutes?

A: The 9250A-103-RC is supplied in Bulk packaging. The ER1641 series parts (ER1641-103KM, ER1641-103KP, ER1641-103KR) are supplied in Tape & Reel (TR) packaging. Packaging selection depends on assembly process requirements and procurement volume.

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