IMC1812EB680K Equivalent & Substitute Parts

Part Overview

The IMC1812EB680K is a 68 µH unshielded drum core wirewound inductor manufactured by Vishay Dale, rated for 130 mA maximum current with 6Ω DC resistance. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as Active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the same package footprint and performance envelope.

Substiute Parts

IMC1812EB680K

Vishay DaleIn Stock: 1158IMC1812EB680K Datasheet

Current PartRFQ

744766168

Würth ElektronikIn Stock: 1875744766168 Datasheet

MFR RecommendedRFQ

CM453232-680KL

Bourns Inc.In Stock: 14183CM453232-680KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IMC1812EB680K are qualified based on the following criteria:

• Inductance value: 68 µH ±10% tolerance
• Current rating: minimum 130 mA
• DC resistance: 6Ω maximum
• Package footprint: 1812 (4532 Metric) surface mount
• Unshielded drum core wirewound construction
• Q factor: 50 @ 2.52MHz
• RoHS3 compliance
• Operating temperature range compatibility

The substitute parts identified maintain these electrical and mechanical specifications while differing in core material composition and specific temperature operating ranges.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain Active product status and ROHS3 compliance. The IMC1812EB680K and CM453232-680KL both support the full operating temperature range of -55°C to 125°C, while the 744766168 operates within -40°C to 105°C. The IMC1812EB680K and CM453232-680KL share identical seated height specifications of 0.134" (3.40mm), whereas the 744766168 reaches 0.142" (3.60mm). The CM453232-680KL carries MSL rating of 3 (168 Hours), compared to MSL 1 (Unlimited) for both the IMC1812EB680K and 744766168. Core material differs across the three parts: iron powder for the IMC1812EB680K and ferrite for both substitute options.

Frequently Asked Questions (FAQ)

Q: Can the 744766168 replace the IMC1812EB680K in all applications?

A: The 744766168 maintains equivalent electrical specifications but operates within a reduced temperature range (-40°C to 105°C versus -55°C to 125°C). Selection depends on application temperature requirements. The seated height is also 0.008" (0.20mm) taller.

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

A: Core material composition affects frequency response and saturation characteristics. The IMC1812EB680K uses iron powder, while the 744766168 and CM453232-680KL use ferrite. All three maintain the specified Q factor of 50 @ 2.52MHz and self-resonant frequencies within 9-10MHz range.

Q: Is the CM453232-680KL suitable for moisture-sensitive applications?

A: The CM453232-680KL carries MSL 3 (168 Hours) rating, requiring controlled storage and handling conditions. The IMC1812EB680K and 744766168 both carry MSL 1 (Unlimited), allowing unrestricted storage.

Q: Are all three parts compatible with the same PCB footprint?

A: All three components use the 1812 (4532 Metric) package with identical length and width dimensions (0.177" x 0.126"). The 744766168 has a maximum seated height of 0.142" compared to 0.134" for the other two parts, which may affect clearance in space-constrained designs.

Q: What is the significance of the self-resonant frequency difference?

A: The IMC1812EB680K and CM453232-680KL both exhibit 9MHz self-resonant frequency, while the 744766168 reaches 10MHz. This parameter defines the frequency limit beyond which the inductor behaves capacitively rather than inductively.