IMS05EB2R7K Equivalent & Substitute Parts

Part Overview

The IMS05EB2R7K is a 2.7 µH shielded molded inductor manufactured by Vishay Dale, rated for 535 mA with a maximum DC resistance of 280 mOhm. This component is part of the IMS-5 series and features an axial through-hole package with iron powder core construction. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Inductance	2.7 µH
Tolerance	±10%
Current Rating	535 mA
DC Resistance (DCR)	280 mOhm Max
Shielding	Shielded
Package Type	Axial Through Hole
Size	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Q @ Frequency	44 @ 7.9 MHz
Self Resonant Frequency	92 MHz
Operating Temperature Range	-55°C ~ 105°C

Substitute Part Grouping Explanation

Substitution eligibility for the IMS05EB2R7K is determined by the following critical parameters:

Inductance value: 2.7 µH with ±10% tolerance
Current rating: 535 mA minimum
DC resistance: 280 mOhm maximum
Package configuration: Axial through-hole
Physical dimensions: 0.162" Dia x 0.410" L
Shielding: Required
Q factor and self-resonant frequency: 44 @ 7.9 MHz and 92 MHz respectively

All substitute parts listed maintain these electrical and mechanical specifications, ensuring functional equivalence in circuit applications. Differences in core material (ferrite vs. iron), product status (active vs. obsolete), and compliance certifications are noted but do not affect electrical interchangeability for the specified parameters.

Parameter Comparison

Parameter	IMS05EB2R7K (Vishay Dale)	9250A-272-RC (Bourns)	ER1641-272KM (API Delevan)	ER1641-272KP (API Delevan)	ER1641-272KR (API Delevan)	ER1641-272KS (API Delevan)
Inductance	2.7 µH	2.7 µH	2.7 µH	2.7 µH	2.7 µH	2.7 µH
Tolerance	±10%	±10%	±10%	±10%	±10%	±10%
Current Rating (mA)	535	535	535	535	535	535
DC Resistance (mOhm)	280 Max	280 Max	280 Max	280 Max	280 Max	280 Max
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded
Q @ 7.9 MHz	44	44	44	44	44	44
Self Resonant Frequency	92 MHz	92 MHz	92 MHz	92 MHz	92 MHz	92 MHz
Package	Axial Through Hole	Axial Through Hole	Axial Through Hole	Axial Through Hole	Axial Through Hole	Axial Through Hole
Size	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L	0.162" Dia x 0.410" L
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
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

For applications requiring ROHS3 compliance, the 9250A-272-RC (Bourns Inc.) is the primary substitute. This part maintains all electrical specifications of the IMS05EB2R7K while offering active product status and an extended operating temperature range to 125°C.

The ER1641 series (ER1641-272KM, ER1641-272KP, ER1641-272KR, ER1641-272KS) from API Delevan Inc. provides electrically equivalent alternatives with active product status. These parts are available in tape and reel packaging. Note that the ER1641 series is RoHS non-compliant; selection of these parts should be based on specific application requirements and regulatory constraints.

All substitute parts are functionally interchangeable with the IMS05EB2R7K based on the specified electrical and mechanical parameters. Selection should prioritize product availability, compliance requirements, and packaging format needed for production processes.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-272-RC replace the IMS05EB2R7K directly?

A: Yes. The 9250A-272-RC maintains identical inductance (2.7 µH), current rating (535 mA), DC resistance (280 mOhm max), and physical dimensions. The extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C) provides additional thermal margin. Both parts are ROHS3 compliant.

Q: What is the difference between the ER1641 variants (KM, KP, KR, KS)?

A: The ER1641-272K variants differ in packaging format. All four variants (KM, KP, KR, KS) are supplied in tape and reel packaging and maintain identical electrical specifications. Selection among these variants depends on tape reel specifications and supplier availability.

Q: Are the ER1641 series parts suitable for RoHS-regulated applications?

A: No. The ER1641-272KM, ER1641-272KP, ER1641-272KR, and ER1641-272KS are RoHS non-compliant. These parts are suitable only for applications without RoHS compliance requirements.

Q: Will the substitute parts fit the same PCB footprint as the IMS05EB2R7K?

A: Yes. All substitute parts share the same axial through-hole package configuration and physical dimensions (0.162" Dia x 0.410" L). No PCB layout modifications are required.

Q: What is the inventory status of these substitute parts?

A: The 9250A-272-RC has 1087 pcs in stock. The ER1641 series variants have the following inventory: ER1641-272KM (687 pcs), ER1641-272KP (916 pcs), ER1641-272KR (877 pcs), and ER1641-272KS (1050 pcs).

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