IMC1210EB4R7K Equivalent & Substitute Parts

Part Overview

The IMC1210EB4R7K is a 4.7 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, rated for 224 mA maximum current with 1.5 Ohm maximum DC resistance. This surface mount component operates across -55°C to 125°C and is specified in the 1210 (3225 Metric) package form factor. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative packaging formats are required for production processes, or when design specifications allow for compatible alternatives with equivalent electrical performance characteristics.

Key Parameters

Parameter	Value
Inductance	4.7 µH
Inductance Tolerance	±10%
Current Rating	224 mA
DC Resistance (Max)	1.5 Ohm
Core Type	Drum Core, Wirewound
Shielding	Unshielded
Package / Case	1210 (3225 Metric)
Operating Temperature Range	-55°C to 125°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the IMC1210EB4R7K is determined by the following critical parameters:

Primary Matching Criteria:

Inductance value: 4.7 µH (exact match required)
Inductance tolerance: ±10% or tighter
DC resistance: 1.5 Ohm maximum
Core type: Drum core wirewound construction
Package / case: 1210 (3225 Metric) form factor
Mounting type: Surface mount
Operating temperature range: Must encompass or match -55°C to 125°C

Secondary Compatibility Factors:

Current rating: Minimum 220 mA (original part rated 224 mA)
Shielding configuration: Unshielded preferred for direct substitution
Frequency characteristics: Q @ 7.96 MHz and self-resonant frequency
Compliance certifications: ROHS3 and REACH status

Substitute parts are grouped based on adherence to these parameters. Parts with lower current ratings (165 mA) or different shielding characteristics are identified as conditional substitutes requiring design verification.

Parameter Comparison

Parameter	IMC1210EB4R7K (Vishay Dale)	74476404 (Würth Elektronik)	B82422T1472K000 (EPCOS - TDK)	CM322522-4R7JL (Bourns)	CM322522-4R7KL (Bourns)	CMH322522-4R7KL (Bourns)
Inductance	4.7 µH	4.7 µH	4.7 µH	4.7 µH	4.7 µH	4.7 µH
Inductance Tolerance	±10%	±10%	±10%	±5%	±10%	±10%
Current Rating (mA)	224	220	220	165	165	220
DC Resistance (Max)	1.5 Ohm	1.5 Ohm	1.5 Ohm	1.5 Ohm	1.5 Ohm	1.5 Ohm
Core Material	Iron Powder	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Shielding	Unshielded	Unshielded	Unshielded	Unshielded	Unshielded	Shielded
Q @ 7.96 MHz	30	30	30	30	30	30
Self-Resonant Frequency	50 MHz	45 MHz	50 MHz	55 MHz	55 MHz	45 MHz
Operating Temperature Range	-55°C to 125°C	-40°C to 105°C	-55°C to 125°C	-40°C to 125°C	-40°C to 125°C	-55°C to 125°C
Package / Case	1210 (3225 Metric)	1210 (3225 Metric)	2-SMD, J-Lead	Nonstandard	Nonstandard	1210 (3225 Metric)
Packaging Format	Bulk	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Preferred):

74476404 (Würth Elektronik) and CMH322522-4R7KL (Bourns) are the primary substitutes. Both maintain 220 mA current rating, 1.5 Ohm DC resistance, and 1210 (3225 Metric) package compatibility. The Würth part operates at -40°C to 105°C, which is narrower than the original specification. The Bourns CMH322522-4R7KL extends the temperature range to -55°C to 125°C, matching the original part exactly, and includes shielding for applications requiring electromagnetic isolation.

B82422T1472K000 (EPCOS - TDK) provides full temperature range coverage (-55°C to 125°C) and AEC-Q200 automotive qualification. The 2-SMD J-Lead package differs from the standard 1210 form factor, requiring PCB layout verification before implementation.

Tier 2 - Conditional Substitutes:

CM322522-4R7JL and CM322522-4R7KL (Bourns) both feature 165 mA current rating, which is lower than the original 224 mA specification. These parts are suitable only when circuit design allows reduced current headroom. Both use nonstandard package configurations requiring mechanical compatibility assessment. CM322522-4R7JL offers ±5% inductance tolerance versus the original ±10%.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). B82422T1472K000 includes AEC-Q200 automotive qualification, appropriate for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can I use the Würth Elektronik 74476404 as a direct replacement?

A: Yes, with temperature range consideration. The 74476404 matches inductance, current rating, DC resistance, and package specifications. However, its operating range (-40°C to 105°C) is narrower than the original IMC1210EB4R7K (-55°C to 125°C). Verify that your application does not require operation below -40°C or above 105°C.

Q: What is the difference between the Bourns CM322522-4R7JL and CM322522-4R7KL?

A: Both parts share identical electrical specifications (4.7 µH, 165 mA, 1.5 Ohm) and nonstandard package configuration. The primary difference is inductance tolerance: CM322522-4R7JL specifies ±5% while CM322522-4R7KL specifies ±10%. Both have reduced current ratings (165 mA) compared to the original 224 mA, limiting their use to lower-current applications.

Q: Why does the EPCOS B82422T1472K000 have a different package designation?

A: The B82422T1472K000 uses a 2-SMD J-Lead package configuration while maintaining 1210 (3225 Metric) supplier device package dimensions. This alternative lead configuration may require PCB footprint adjustment and reflow profile validation before production implementation.

Q: Is the shielded Bourns CMH322522-4R7KL compatible with my unshielded design?

A: The CMH322522-4R7KL is electrically equivalent to the original unshielded IMC1210EB4R7K in terms of inductance, current rating, and DC resistance. The added shielding reduces electromagnetic radiation and susceptibility, which may alter circuit behavior in sensitive applications. Electromagnetic compatibility testing is recommended if the original design relied on unshielded characteristics.

Q: Which substitute offers the best temperature range coverage?

A: Both the EPCOS B82422T1472K000 and Bourns CMH322522-4R7KL maintain the full -55°C to 125°C operating range of the original part. The Würth 74476404 and Bourns CM322522 series are limited to -40°C to 105°C and -40°C to 125°C respectively.

Q: Can I use a substitute with lower current rating if my circuit only draws 150 mA?

A: Yes, the Bourns CM322522 series (165 mA rating) is suitable for applications drawing 150 mA. Ensure adequate design margin and verify thermal performance under worst-case operating conditions. The original 224 mA rating provides greater headroom for transient current spikes and thermal stress.

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