IMC1812EU100J Equivalent & Substitute Parts

Part Overview

The IMC1812EU100J is a 10 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, rated for 250 mA with a maximum DC resistance of 1.6Ohm. This surface mount component in 1812 (4532 Metric) package is designed for applications requiring fixed inductance in compact form factors. The part maintains active product status and is ROHS3 compliant. Substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Inductance	10 µH
Tolerance	±5%
Current Rating	250 mA
DC Resistance (Max)	1.6Ohm
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount
Q @ Frequency	50 @ 2.52MHz
Frequency - Self Resonant	20MHz
Shielding	Unshielded
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the IMC1812EU100J are qualified based on the following electrical and mechanical parameters:

Inductance value: 10 µH (exact match required)
Tolerance: ±5% (exact match required)
Current rating: 250 mA (exact match required)
DC resistance: 1.6Ohm maximum (exact match required)
Package / Case: 1812 (4532 Metric) (exact match required)
Mounting type: Surface Mount (exact match required)
Q @ Frequency: 50 @ 2.52MHz (exact match required)
Self resonant frequency: 20MHz (exact match required)
Shielding: Unshielded (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)

Both identified substitute parts meet all critical electrical specifications and mechanical compatibility requirements. Variations in core material (ferrite vs. iron powder) and operating temperature ranges are noted but do not disqualify substitution within the specified parameter envelope.

Parameter Comparison

Parameter	IMC1812EU100J (Vishay Dale)	CM453232-100JL (Bourns Inc.)	PM1812-100J-RC (Bourns Inc.)
Inductance	10 µH	10 µH	10 µH
Tolerance	±5%	±5%	±5%
Current Rating (Amps)	250 mA	250 mA	250 mA
DC Resistance (Max)	1.6Ohm	1.6Ohm	1.6Ohm
Q @ Frequency	50 @ 2.52MHz	50 @ 2.52MHz	50 @ 2.52MHz
Frequency - Self Resonant	20MHz	20MHz	20MHz
Shielding	Unshielded	Unshielded	Unshielded
Package / Case	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)
Size / Dimension	0.177" L x 0.126" W (4.50mm x 3.20mm)	0.177" L x 0.126" W (4.50mm x 3.20mm)	0.177" L x 0.126" W (4.50mm x 3.20mm)
Height - Seated (Max)	0.134" (3.40mm)	0.134" (3.40mm)	0.134" (3.40mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 100°C
Material - Core	Iron Powder	Ferrite	Ferrite
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three inductors meet the core electrical and mechanical requirements for direct substitution within the 10 µH, 250 mA, 1.6Ohm specification envelope. Selection between parts should be based on the following factors:

IMC1812EU100J (Vishay Dale): Primary part with iron powder core construction. Offers extended operating temperature range (-55°C to 125°C) and MSL 1 rating for unlimited moisture exposure. Suitable for applications requiring maximum temperature margin and moisture tolerance.

CM453232-100JL (Bourns Inc.): Ferrite core construction with operating temperature range of -40°C to 125°C and MSL 1 rating. Provides equivalent performance within standard industrial temperature specifications with unlimited moisture handling capability.

PM1812-100J-RC (Bourns Inc.): Ferrite core construction with operating temperature range of -40°C to 100°C and MSL 3 rating (168 hours). Suitable for applications within standard temperature ranges where moisture exposure is controlled to 168-hour maximum duration.

All parts are ROHS3 compliant and maintain active product status. Selection should account for application-specific temperature and moisture requirements.

Frequently Asked Questions (FAQ)

Q: Can CM453232-100JL and PM1812-100J-RC be used interchangeably with IMC1812EU100J?

A: Both substitute parts meet all specified electrical parameters (10 µH inductance, 250 mA current rating, 1.6Ohm maximum DC resistance) and mechanical compatibility (1812 package, surface mount). Substitution is valid within the defined parameter envelope. Operating temperature and moisture sensitivity differences should be evaluated against application requirements.

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

A: Core material differences are provided in the specification data. Both iron powder (IMC1812EU100J) and ferrite (CM453232-100JL, PM1812-100J-RC) constructions deliver identical electrical performance at the specified test frequency (2.52 MHz) and self-resonant frequency (20 MHz). Material selection should be based on application-specific thermal and environmental requirements.

Q: Are there temperature range limitations when substituting parts?

A: Operating temperature ranges differ across the three parts. IMC1812EU100J operates from -55°C to 125°C, while both Bourns parts operate from -40°C to 125°C (CM453232-100JL) or -40°C to 100°C (PM1812-100J-RC). Applications requiring operation below -40°C must use the primary part (IMC1812EU100J).

Q: What does MSL 1 versus MSL 3 mean for component handling?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited moisture exposure capability, while MSL 3 requires moisture exposure to be limited to 168 hours maximum. IMC1812EU100J and CM453232-100JL carry MSL 1 ratings. PM1812-100J-RC carries MSL 3 rating and requires controlled storage and handling procedures for applications with extended moisture exposure.

Q: Are all parts available in Tape & Reel (TR) packaging?

A: All three parts are specified with Tape & Reel (TR) packaging for automated assembly processes. Package dimensions and height specifications are identical across all parts.

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