MLF2012C220MT Equivalent & Substitute Parts

Part Overview

The MLF2012C220MT is a 22 µH shielded multilayer inductor manufactured by TDK Corporation in the 0805 (2012 Metric) surface mount package. This component is rated for 5 mA maximum current with 900 mOhm maximum DC resistance and operates across the temperature range of -55°C to 125°C. The part carries a "Not For New Designs" product status, indicating that TDK has discontinued active development for this specific variant. Identifying equivalent substitute parts is necessary to support ongoing production, maintenance, and repair of existing systems utilizing this inductor specification.

Substiute Parts

MLF2012C220MT

TDK CorporationIn Stock: 1101MLF2012C220MT Datasheet

Current PartRFQ

MLF2012C220KT000

TDK CorporationIn Stock: 17560MLF2012C220KT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLF2012C220MT is determined by strict alignment of the following critical parameters:

• Inductance value: 22 µH (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required for PCB compatibility)
• Current Rating: 5 mA minimum (equal or higher acceptable)
• DC Resistance: 900 mOhm maximum (equal or lower acceptable)
• Shielding: Shielded (required for EMI performance)
• Q Factor @ 1 MHz: 30 minimum (equal or higher acceptable)
• Self Resonant Frequency: 18 MHz minimum (equal or higher acceptable)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The MLF2012C220KT000 meets all substitution criteria as an equivalent part. Tolerance differences and operating temperature range variations do not disqualify substitution when the core electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

The MLF2012C220KT000 is the direct equivalent substitute for the MLF2012C220MT. Both parts are manufactured by TDK Corporation and share identical electrical and mechanical specifications for inductance, current rating, DC resistance, shielding, package dimensions, and quality factor.

The MLF2012C220KT000 carries an "Active" product status, ensuring continued availability and manufacturing support from TDK Corporation. This contrasts with the MLF2012C220MT, which is designated "Not For New Designs" and represents an obsolete variant within the MLF series.

The substitute part features a tighter inductance tolerance (±10% versus ±20%), which provides improved consistency in circuit performance. The operating temperature range of the substitute (-40°C to 85°C) is narrower than the original part (-55°C to 125°C); this difference must be evaluated against the specific thermal requirements of the application.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can MLF2012C220KT000 be used as a direct replacement for MLF2012C220MT in existing PCB assemblies?

A: Yes. Both parts share identical package dimensions (0805 / 2012 Metric), footprint, and mounting specifications. No PCB layout modifications are required for substitution.

Q: What is the significance of the tolerance difference between ±20% and ±10%?

A: The MLF2012C220KT000 provides tighter inductance tolerance, resulting in more consistent component performance across production batches. This is advantageous for applications requiring precise inductance values. The original ±20% tolerance is less stringent.

Q: Does the narrower operating temperature range of MLF2012C220KT000 affect substitution suitability?

A: The substitute operates from -40°C to 85°C, compared to the original -55°C to 125°C range. Substitution is appropriate only if the application's thermal environment remains within -40°C to 85°C. Applications requiring operation below -40°C or above 85°C must retain the original MLF2012C220MT or identify alternative parts with extended temperature ratings.

Q: Are both parts RoHS compliant?

A: Yes. Both MLF2012C220MT and MLF2012C220KT000 are ROHS3 compliant and carry identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates that TDK Corporation has transitioned the MLF2012C220MT to end-of-life status and recommends the MLF2012C220KT000 as the active equivalent for new applications. Existing inventory of the original part may still be available for legacy system support.

Q: Are the electrical performance characteristics identical between the two parts?

A: Yes. Both parts deliver 22 µH inductance, 5 mA current rating, 900 mOhm maximum DC resistance, Q factor of 30 @ 1 MHz, and 18 MHz self-resonant frequency. Electrical performance in circuit operation is equivalent.