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MHQ1005P18NJT000
TDK Corporation
FIXED IND 18NH 260MA 800MOHM SMD
235362 Pcs New Original In Stock
18 nH Unshielded Multilayer Inductor 260 mA 800mOhm Max 0402 (1006 Metric)
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5.0 / 5.0
- (287 Ratings)
MHQ1005P18NJT000
Product Overview
6665880
DiGi Electronics Part Number
MHQ1005P18NJT000-DGManufacturer
TDK Corporation
MHQ1005P18NJT000
Description
FIXED IND 18NH 260MA 800MOHM SMDInventory
235362 Pcs New Original In Stock
18 nH Unshielded Multilayer Inductor 260 mA 800mOhm Max 0402 (1006 Metric)
Quantity
Minimum 1
Minimum 1
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MHQ1005P18NJT000 Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
MHQ-P
Product Status
Active
Type
Multilayer
Material - Core
Ceramic, Non-Magnetic
Inductance
18 nH
Tolerance
±5%
Current Rating (Amps)
260 mA
Current - Saturation (Isat)
-
Shielding
Unshielded
DC Resistance (DCR)
800mOhm Max
Q @ Freq
22 @ 250MHz
Frequency - Self Resonant
2.3GHz
Ratings
-
Operating Temperature
-55°C ~ 125°C
Inductance Frequency - Test
100 MHz
Mounting Type
Surface Mount
Package / Case
0402 (1006 Metric)
Supplier Device Package
1006 (0402)
Size / Dimension
0.039" L x 0.024" W (1.00mm x 0.60mm)
Height - Seated (Max)
0.024" (0.60mm)
Datasheet & Documents
HTML Datasheet
MHQ1005P18NJT000-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
445-181304-2-DG
2266-MHQ1005P18NJT000
445-181304-2
445-181304-1
445-181304-1-DG
MHQ1005P18NJT000-DG
445-MHQ1005P18NJT000CT
445-MHQ1005P18NJT000TR
445-MHQ1005P18NJT000DKR
Standard Package
10,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Je suis enchanté par la qualité supérieure de leurs produits à des prix si raisonnables.
Dec 02, 2025
Die schnelle und zuverlässige Versandabwicklung ist vorbildlich.
Dec 02, 2025
The consistency in their offerings is remarkable; I can always count on DiGi Electronics for top-notch products.
Dec 02, 2025
DiGi Electronics' punctuality helps me manage my customer expectations effectively.
Dec 02, 2025
Customer support was prompt and helpful, resolving my questions with professionalism.
Dec 02, 2025
A trusted supplier for their punctual and careful shipping practices.
Dec 02, 2025
Super speedy delivery and affordable prices, making shopping stress-free.
Dec 02, 2025
The company's proactive approach to inventory control minimizes stockouts and overstock situations.
Dec 02, 2025
They keep sufficient stock to meet demands quickly, which I greatly appreciate.
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Frequently Asked Questions (FAQ)
What are the practical considerations when replacing a TDK MHQ1005P18NJT000 with a different 18nH inductor in a sensitive RF circuit, especially regarding signal integrity?
When substituting the TDK MHQ1005P18NJT000, prioritize inductors with similar Q factor and self-resonant frequency (SRF) to maintain RF circuit performance. While the MHQ1005P18NJT000 offers a respectable Q of 22 at 250MHz and an SRF of 2.3GHz, using an inductor with a significantly lower Q can introduce unwanted losses, impacting signal attenuation and potentially causing impedance mismatches. Conversely, an inductor with an SRF too close to your operating frequency could lead to unpredictable behavior and resonance. Always verify the proposed replacement's SRF is well above your highest signal frequency and that its Q factor is comparable or superior to the MHQ1005P18NJT000 for optimal signal integrity.
In a high-density 0402 footprint design, what are the potential thermal runaway risks of the TDK MHQ1005P18NJT000 when operating near its 260mA current rating, and how can this be mitigated?
Operating the TDK MHQ1005P18NJT000 near its 260mA rating, especially in a compact 0402 footprint, presents a thermal risk. The inherent DC resistance (DCR) of 800mOhm means that at 260mA, the inductor will dissipate approximately (0.26A)^2 * 0.8 Ohm = 54mW of power as heat. In a cramped layout, this heat may not dissipate effectively, leading to increased component temperatures and potentially reduced lifespan or even failure. To mitigate this risk, ensure adequate thermal relief in your PCB layout by using generous copper pours connected to the inductor pads. Consider operating the MHQ1005P18NJT000 with a safety margin, perhaps at no more than 80% of its rated current, or investigate if a competitor's part with a lower DCR is available in the same footprint.
For an application requiring precise impedance matching at 100MHz, how does the ±5% tolerance of the TDK MHQ1005P18NJT000 impact design robustness, and what are the trade-offs compared to tighter tolerance options?
The ±5% inductance tolerance of the TDK MHQ1005P18NJT000 translates to a variation of ±0.9nH around its nominal 18nH value. In sensitive impedance matching circuits operating at 100MHz, this variation can cause deviations from the ideal impedance, potentially affecting signal reflections and power transfer efficiency. While ±5% is often acceptable, for mission-critical applications demanding extremely precise matching, a tighter tolerance inductor (e.g., ±2%) might be necessary. The trade-off for tighter tolerance is typically a higher cost and potentially reduced availability. If the ±5% tolerance of the MHQ1005P18NJT000 is a concern, consider implementing minor adjustments in your circuit's load or source impedance or explore alternative components with tighter specifications.
When designing a power filtering stage for a noise-sensitive analog signal, what are the advantages and disadvantages of using the unshielded TDK MHQ1005P18NJT000 compared to a shielded multilayer inductor (e.g., TDK MHQ0603P series)?
The TDK MHQ1005P18NJT000 is an unshielded inductor, meaning it generates and is susceptible to electromagnetic interference (EMI). In a noise-sensitive analog signal path, its primary advantage is its smaller physical size and potentially lower cost. However, the disadvantage is its propensity to radiate EMI, which can couple into adjacent components and signals, or pick up external noise. A shielded inductor, like those in TDK's MHQ0603P series (though different in inductance value and size), would offer superior EMI containment. If the MHQ1005P18NJT000 is chosen, careful layout and shielding practices for the PCB itself are crucial. If EMI is a significant concern and a shielded part is not an option due to space or value constraints, consider using ferrites or other filtering techniques in conjunction with the MHQ1005P18NJT000.
Under extreme operating temperatures (-55°C to 125°C), how might the inductance value of the TDK MHQ1005P18NJT000 drift, and what implications does this have for a critical high-frequency oscillator circuit?
The TDK MHQ1005P18NJT000 utilizes a ceramic, non-magnetic core, which generally exhibits good stability over temperature. However, all passive components will experience some degree of inductance variation with temperature. For a critical high-frequency oscillator circuit relying on the precise 18nH of the MHQ1005P18NJT000, this drift can shift the oscillation frequency. While the exact drift coefficient isn't specified in the provided details, ceramic cores are typically more stable than ferrite cores in this regard. To mitigate potential issues, if the oscillator's frequency is extremely sensitive to temperature, consider incorporating a temperature compensation mechanism, such as a thermistor in parallel with the inductor, or choose a different component designed for extreme thermal stability. Testing the MHQ1005P18NJT000 across your expected temperature range is highly recommended before final product deployment.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MHQ1005P18NJT000 CAD Models
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