IMC1812ES330J Equivalent & Substitute Parts

Part Overview

The IMC1812ES330J is a 33 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, rated for 160 mA with a maximum DC resistance of 4Ohm. This surface mount component in 1812 (4532 Metric) package is designed for applications requiring stable inductance values across the specified frequency range. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

IMC1812ES330J

Vishay DaleIn Stock: 1062IMC1812ES330J Datasheet

Current PartRFQ

CM453232-330JL

Bourns Inc.In Stock: 4656CM453232-330JL Datasheet

MFR RecommendedRFQ

PM1812-330J-RC

Bourns Inc.In Stock: 3177PM1812-330J-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IMC1812ES330J are qualified based on the following criteria:

• Identical inductance value: 33 µH
• Matching tolerance: ±5%
• Equal or greater current rating: 160 mA minimum
• DC resistance not exceeding: 4Ohm maximum
• Identical package footprint: 1812 (4532 Metric)
• Surface mount configuration
• Matching Q factor and self-resonant frequency specifications
• Unshielded construction
• Active product status with current manufacturing support
• ROHS3 compliance and MSL 1 rating

The two qualified substitutes (CM453232-330JL and PM1812-330J-RC) meet all electrical and mechanical parameters. Core material differences (iron powder versus ferrite) do not affect substitution eligibility when all specified performance metrics are maintained.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status with full ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental regulatory adherence. The IMC1812ES330J (Vishay Dale) with iron powder core construction and the two Bourns alternatives (CM453232-330JL and PM1812-330J-RC) with ferrite core construction are electrically and mechanically interchangeable within the specified parameter envelope.

Selection between these parts should be based on supply chain availability, lead time requirements, and established vendor relationships. The CM453232-330JL and PM1812-330J-RC differ in operating temperature range (CM453232-330JL: -40°C to 125°C; PM1812-330J-RC: -40°C to 100°C), which may influence selection for applications requiring extended high-temperature performance.

Frequently Asked Questions (FAQ)

Q: Can CM453232-330JL be used as a direct replacement for IMC1812ES330J?

A: Yes. Both parts share identical inductance (33 µH), tolerance (±5%), current rating (160 mA), DC resistance (4Ohm max), and package dimensions (1812/4532 Metric). Electrical performance metrics including Q factor and self-resonant frequency are equivalent.

Q: What is the difference between the two Bourns substitutes?

A: CM453232-330JL operates from -40°C to 125°C, while PM1812-330J-RC operates from -40°C to 100°C. Both maintain identical electrical specifications and package footprint. Selection depends on application temperature requirements.

Q: Are there any core material considerations for substitution?

A: The IMC1812ES330J uses iron powder core material, while both Bourns substitutes use ferrite core material. When all specified electrical parameters (inductance, Q factor, self-resonant frequency, DC resistance) are maintained, core material differences do not prevent substitution.

Q: Will these parts fit the same PCB footprint?

A: Yes. All three parts use the 1812 (4532 Metric) package with identical dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm) and maximum seated height of 0.134" (3.40mm). PCB layout compatibility is assured.

Q: Are all parts RoHS compliant?

A: Yes. IMC1812ES330J, CM453232-330JL, and PM1812-330J-RC are all ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.