IMC1210EB120K Equivalent & Substitute Parts

Part Overview

The IMC1210EB120K is a 12 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, designed for surface mount applications in the 1210 (3225 Metric) package. This component is rated for 173 mA maximum current with a DC resistance of 2.5Ohm maximum and operates across the temperature range of -55°C to 125°C. The part maintains Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and environmental requirements for the application.

Key Parameters

Parameter	Value	Unit
Inductance	12	µH
Inductance Tolerance	±10%	-
Current Rating	173	mA
DC Resistance (Max)	2.5	Ohm
Q Factor @ 2.52 MHz	30	-
Self Resonant Frequency	30	MHz
Operating Temperature Range	-55 to 125	°C
Package Type	1210 (3225 Metric)	-
Mounting Type	Surface Mount	-
Core Material	Iron Powder	-
Shielding	Unshielded	-

Substitute Part Grouping Explanation

Substitution eligibility for the IMC1210EB120K is determined by the following critical parameters:

Electrical Equivalence Criteria:

Inductance value of 12 µH with ±10% tolerance
DC resistance maximum of 2.5Ohm
Q factor of 30 @ 2.52 MHz
Unshielded drum core wirewound construction

Mechanical Compatibility Criteria:

Surface mount package with 1210 (3225 Metric) footprint dimensions
Physical dimensions: 0.126" L x 0.098" W (3.20mm x 2.49mm)
Height compatibility within seated maximum specifications

Environmental & Compliance Criteria:

Operating temperature range support (minimum -40°C to 125°C acceptable)
ROHS3 compliance
MSL 1 rating (Unlimited moisture sensitivity)

The CM322522-120KL from Bourns Inc. qualifies as a substitute based on matching inductance, tolerance, DC resistance, Q factor, and core type specifications. Variations in current rating (125 mA vs. 173 mA) and core material (Ferrite vs. Iron Powder) are acceptable within application design margins when the primary electrical parameters remain equivalent.

Parameter Comparison

Parameter	IMC1210EB120K (Vishay Dale)	CM322522-120KL (Bourns Inc.)	Match Status
Inductance	12 µH	12 µH	Equivalent
Inductance Tolerance	±10%	±10%	Equivalent
DC Resistance (Max)	2.5 Ohm	2.5 Ohm	Equivalent
Q @ 2.52 MHz	30	30	Equivalent
Current Rating	173 mA	125 mA	Substitute Lower
Self Resonant Frequency	30 MHz	33 MHz	Substitute Higher
Operating Temperature Range	-55 to 125°C	-40 to 125°C	Substitute Narrower
Package / Case	1210 (3225 Metric)	Nonstandard	Footprint Compatible
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.49mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)	Equivalent
Height - Seated (Max)	0.095" (2.41mm)	0.087" (2.20mm)	Substitute Lower
Core Material	Iron Powder	Ferrite	Different Material
Shielding	Unshielded	Unshielded	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Primary Part Selection (IMC1210EB120K): Select the IMC1210EB120K when the application requires the full 173 mA current rating and extended low-temperature operation down to -55°C. This part maintains Active product status with established supply availability (1116 Pcs in stock) and iron powder core construction.

Substitute Part Selection (CM322522-120KL): The CM322522-120KL is suitable for applications where current requirements do not exceed 125 mA and operating temperature range of -40°C to 125°C is acceptable. This substitute offers equivalent electrical performance in inductance, tolerance, DC resistance, and Q factor specifications. Both parts maintain ROHS3 compliance and MSL 1 ratings. The Bourns part demonstrates higher self-resonant frequency (33 MHz vs. 30 MHz) and lower seated height (2.20mm vs. 2.41mm), which may provide advantages in space-constrained designs.

Compliance Verification: Both parts satisfy ROHS3 compliance requirements, REACH unaffected status, and EAR99 export classification. Selection between primary and substitute should be based on current rating requirements and operating temperature range specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Can CM322522-120KL replace IMC1210EB120K in all applications?

A: The CM322522-120KL is electrically equivalent for inductance, tolerance, DC resistance, and Q factor specifications. However, the substitute has a lower current rating (125 mA vs. 173 mA) and narrower operating temperature range (-40°C to 125°C vs. -55°C to 125°C). Substitution is valid only when application current requirements do not exceed 125 mA and minimum operating temperature does not go below -40°C.

Q: What is the difference between iron powder and ferrite core materials in these inductors?

A: Both materials are used in drum core wirewound inductors. The core material difference does not affect the specified electrical parameters (inductance, tolerance, DC resistance, Q factor) provided in this comparison. Material selection impacts frequency response characteristics and thermal properties beyond the scope of this equivalency analysis.

Q: Are the physical dimensions truly compatible between these parts?

A: Both parts share the same footprint dimensions (0.126" L x 0.098" W / 3.20mm x 2.49mm). The CM322522-120KL has a lower seated height (0.087" vs. 0.095"), which is compatible with PCB layouts designed for the IMC1210EB120K. The substitute will not exceed height constraints of the primary part.

Q: What does the "Nonstandard" package designation mean for the CM322522-120KL?

A: The CM322522-120KL is designated as Nonstandard package type despite maintaining 1210 (3225 Metric) footprint compatibility. This designation indicates the part does not conform to a specific industry standard package outline, though physical dimensions remain compatible with standard 1210 footprint PCB layouts.

Q: Are both parts available with the same moisture sensitivity level?

A: Yes. Both IMC1210EB120K and CM322522-120KL carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

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