IMC1812ES331K Equivalent & Substitute Parts

Part Overview

The IMC1812ES331K is a 330 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, rated for 85 mA continuous current with a maximum DC resistance of 14 Ohm. This surface mount component in 1812 (4532 Metric) package is designed for applications requiring stable inductance across the operating temperature range of -55°C to 125°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this inductor category.

Substiute Parts

IMC1812ES331K

Vishay DaleIn Stock: 806IMC1812ES331K Datasheet

Current PartRFQ

CM453232-331JL

Bourns Inc.In Stock: 2444CM453232-331JL Datasheet

MFR RecommendedRFQ

CM453232-331KL

Bourns Inc.In Stock: 3431CM453232-331KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IMC1812ES331K are qualified based on the following criteria:

Electrical Parameters (Must Match or Exceed):

• Inductance: 330 µH (tolerance ±10% or tighter)
• Current Rating: 85 mA minimum
• DC Resistance: 14 Ohm maximum
• Core Material: Ferrite, unshielded drum core
• Self Resonant Frequency: 4.6 MHz minimum

Mechanical Parameters (Must Match):

• Package / Case: 1812 (4532 Metric)
• Physical Dimensions: 0.177" L x 0.126" W (4.50mm x 3.20mm)
• Height - Seated (Max): 0.134" (3.40mm)
• Mounting Type: Surface Mount

Compliance & Environmental:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• Product Status: Active

The substitute parts CM453232-331JL and CM453232-331KL meet all electrical and mechanical requirements. Both are manufactured by Bourns Inc. and maintain functional equivalence with the original part.

Parameter Comparison

Engineering Selection Recommendations

Both Bourns substitute parts are Active status components with ROHS3 compliance and identical moisture sensitivity ratings. Selection between CM453232-331JL and CM453232-331KL depends on packaging requirements:

CM453232-331JL is supplied in Tape & Reel (TR) packaging, matching the original IMC1812ES331K format. This part offers tighter inductance tolerance (±5%) compared to the original ±10%, providing improved consistency in production environments.

CM453232-331KL is supplied in Cut Tape (CT) & Digi-Reel® packaging and maintains the same ±10% inductance tolerance as the original part. This option is suitable for applications where alternative packaging formats are acceptable.

Both substitutes operate within the -40°C to 125°C temperature range, which covers the upper portion of the original part's -55°C to 125°C range. Applications requiring operation below -40°C must retain the IMC1812ES331K.

Frequently Asked Questions (FAQ)

Q: Can CM453232-331JL and CM453232-331KL be used interchangeably with IMC1812ES331K?

A: Both Bourns parts are electrically and mechanically equivalent. The primary difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel) and inductance tolerance (±5% versus ±10%). Selection depends on your procurement and assembly requirements.

Q: What is the impact of the tighter tolerance on CM453232-331JL?

A: The ±5% tolerance on CM453232-331JL provides inductance values within a narrower range compared to the ±10% tolerance of IMC1812ES331K and CM453232-331KL. This results in improved consistency across production batches and may reduce circuit tuning variation in applications sensitive to inductance drift.

Q: Are there temperature range limitations when substituting?

A: The Bourns substitutes operate from -40°C to 125°C, while the original IMC1812ES331K operates from -55°C to 125°C. If your application requires operation below -40°C, the original part must be used.

Q: Do the substitute parts have the same physical footprint?

A: Yes. Both CM453232-331JL and CM453232-331KL maintain identical dimensions (0.177" L x 0.126" W, 4.50mm x 3.20mm) and height (0.134" maximum, 3.40mm), ensuring direct PCB compatibility without layout modifications.

Q: What packaging format should I select?

A: CM453232-331JL in Tape & Reel (TR) matches the original packaging format. CM453232-331KL in Cut Tape (CT) & Digi-Reel® is suitable if your assembly process accommodates alternative packaging or if specific procurement advantages exist.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both CM453232-331JL and CM453232-331KL are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity, matching the original part's compliance profile.