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MLF2012E8R2KT000
TDK Corporation
FIXED IND 8.2UH 15MA 700MOHM SMD
25203 Pcs New Original In Stock
8.2 µH Shielded Multilayer Inductor 15 mA 700mOhm Max 0805 (2012 Metric)
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MLF2012E8R2KT000
Product Overview
6658462
DiGi Electronics Part Number
MLF2012E8R2KT000-DGManufacturer
TDK Corporation
MLF2012E8R2KT000
Description
FIXED IND 8.2UH 15MA 700MOHM SMDInventory
25203 Pcs New Original In Stock
8.2 µH Shielded Multilayer Inductor 15 mA 700mOhm Max 0805 (2012 Metric)
Quantity
Minimum 1
Minimum 1
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MLF2012E8R2KT000 Technical Specifications
Category
Fixed Inductors
Packaging
Cut Tape (CT)
Series
MLF
Product Status
Active
Type
Multilayer
Material - Core
Ferrite
Inductance
8.2 µH
Tolerance
±10%
Current Rating (Amps)
15 mA
Current - Saturation (Isat)
-
Shielding
Shielded
DC Resistance (DCR)
700mOhm Max
Q @ Freq
50 @ 4MHz
Frequency - Self Resonant
35MHz
Ratings
-
Operating Temperature
-55°C ~ 125°C
Inductance Frequency - Test
4 MHz
Mounting Type
Surface Mount
Package / Case
0805 (2012 Metric)
Supplier Device Package
0805 (2012 Metric)
Size / Dimension
0.079" L x 0.049" W (2.00mm x 1.25mm)
Height - Seated (Max)
0.057" (1.45mm)
Datasheet & Documents
HTML Datasheet
MLF2012E8R2KT000-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
MLF2012E8R2K
445-1058-2
445-1058-1
Standard Package
2,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
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Frequently Asked Questions (FAQ)
Can the MLF2012E8R2KT000 be used as a drop-in replacement for the Murata LQM21PN8R2NE0L in a low-power RF matching network, and what design risks should I evaluate?
The MLF2012E8R2KT000 is not a direct functional replacement for the Murata LQM21PN8R2NE0L due to key performance differences. While both are 8.2 µH shielded multilayer inductors in 0805 packages, the MLF2012E8R2KT000 has a significantly lower current rating (15 mA vs. 100 mA for the Murata part) and higher DCR (700 mΩ vs. 2.1 Ω typical, but optimized for lower loss at higher current). Using the TDK part in a circuit designed for the Murata inductor risks thermal runaway or saturation under transient loads, especially in battery-powered RF applications where peak currents may exceed 15 mA. Additionally, the Q factor of the MLF2012E8R2KT000 peaks at 50 @ 4 MHz, whereas the Murata part is optimized for higher Q in the 10–30 MHz range—critical for impedance matching. Verify operating current profiles and re-tune the matching network if substituting.
What are the reliability implications of using the MLF2012E8R2KT000 in a high-vibration industrial environment operating at 125°C ambient temperature?
Although the MLF2012E8R2KT000 is rated for operation up to 125°C and carries an MSL 1 (unlimited floor life) rating, its multilayer ferrite construction presents mechanical reliability concerns in high-vibration settings. The ceramic-based multilayer structure is more brittle than wire-wound inductors, increasing susceptibility to microcracks under sustained mechanical stress. At elevated temperatures, thermal cycling can exacerbate these microcracks due to CTE mismatches between internal layers. For industrial applications with vibration (e.g., motor drives or automotive under-hood), consider adding conformal coating and performing HALT (Highly Accelerated Life Testing) validation. Alternatively, evaluate more robust alternatives like TDK’s MLF-H series or Bourns SRN2012TA if vibration exceeds 5G RMS.
How does the self-resonant frequency (SRF) of the MLF2012E8R2KT000 at 35 MHz impact its usability in a 2.4 GHz Wi-Fi front-end filter design?
The MLF2012E8R2KT000 is unsuitable for use in a 2.4 GHz Wi-Fi front-end filter due to its self-resonant frequency (SRF) of 35 MHz. Above this frequency, the inductor behaves capacitively, completely undermining its intended inductive behavior. At 2.4 GHz, the device would act primarily as a parasitic capacitor, disrupting impedance matching and potentially causing signal reflection or attenuation. For RF front-end applications at GHz frequencies, select inductors with SRF well above the operating band—typically 3–5× the target frequency. Consider high-frequency multilayer inductors like the TDK MHQ1005P series or Coilcraft 0402CS with SRFs exceeding 6 GHz. Always validate with network analyzer measurements if repurposing components outside their intended frequency range.
Is it safe to parallel two MLF2012E8R2KT000 inductors to increase current handling in a power supply filter, and what derating should be applied?
Paralleling two MLF2012E8R2KT000 inductors is not recommended for increasing current capacity in power supply applications. While theoretically the combined current rating might approach 30 mA, real-world tolerances (±10% inductance, ±20% DCR variation), PCB layout asymmetry, and thermal coupling lead to uneven current sharing. The part lacks a specified saturation current (Isat), meaning core saturation could occur unpredictably under dynamic loads, causing one inductor to carry disproportionate current and overheat. Additionally, the low Q and high DCR (700 mΩ max) result in significant I²R losses even at modest currents. For higher-current filtering, select a single inductor with adequate Isat and current rating, such as the TDK MLF2012A100KT (10 µH, 100 mA) or consider a wire-wound shielded inductor like the Würth WE-KI series.
Can the MLF2012E8R2KT000 be used in a precision analog sensor interface circuit where low noise and stability over temperature are critical?
The MLF2012E8R2KT000 is not ideal for precision analog sensor interfaces due to its ferrite core material and lack of characterization for magnetic noise and thermal stability. Ferrite cores can exhibit microphonic effects and generate broadband magnetic noise under AC excitation, which may couple into sensitive analog front-ends (e.g., strain gauge or thermocouple amplifiers). Additionally, while the operating range is -55°C to 125°C, ferrite inductance can drift with temperature, potentially altering filter cutoff frequencies or bias points in precision circuits. For low-noise, stable applications, prefer air-core or powdered iron inductors with tighter thermal specs, or use the MLF2012E8R2KT000 only in non-critical decoupling roles with adequate shielding. Always perform noise spectral density testing if deploying in sub-µV signal paths.
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MLF2012E8R2KT000 CAD Models
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