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MHQ1005P3N9BT000
TDK Corporation
FIXED IND 3.9NH 900MA 90MOHM SMD
325333 Pcs New Original In Stock
3.9 nH Unshielded Multilayer Inductor 900 mA 90mOhm Max 0402 (1005 Metric)
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5.0 / 5.0
- (98 Ratings)
MHQ1005P3N9BT000
Product Overview
6629304
DiGi Electronics Part Number
MHQ1005P3N9BT000-DGManufacturer
TDK Corporation
MHQ1005P3N9BT000
Description
FIXED IND 3.9NH 900MA 90MOHM SMDInventory
325333 Pcs New Original In Stock
3.9 nH Unshielded Multilayer Inductor 900 mA 90mOhm Max 0402 (1005 Metric)
Quantity
Minimum 1
Minimum 1
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MHQ1005P3N9BT000 Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
MHQ-P
Product Status
Active
Type
Multilayer
Material - Core
Ceramic, Non-Magnetic
Inductance
3.9 nH
Tolerance
±0.1nH
Current Rating (Amps)
900 mA
Current - Saturation (Isat)
-
Shielding
Unshielded
DC Resistance (DCR)
90mOhm Max
Q @ Freq
23 @ 250MHz
Frequency - Self Resonant
5GHz
Ratings
-
Operating Temperature
-55°C ~ 125°C
Inductance Frequency - Test
100 MHz
Mounting Type
Surface Mount
Package / Case
0402 (1005 Metric)
Supplier Device Package
0402 (1005 Metric)
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
MHQ1005P3N9BT000-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
MHQ1005P3N9BT000-DG
445-MHQ1005P3N9BT000TR
445-MHQ1005P3N9BT000DKR
445-MHQ1005P3N9BT000CT
Standard Package
10,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Les prix affichés sont toujours clairs et sans surprise, ce qui est rassurant.
Dec 02, 2025
Les produits offrent une performance constante et une longévité impressionnante.
Dec 02, 2025
I highly recommend DiGi Electronics for their value and easy online shopping.
Dec 02, 2025
Their innovative design combined with excellent quality keeps me coming back.
Dec 02, 2025
DiGi's team is knowledgeable and courteous, making every interaction smooth.
Dec 02, 2025
I appreciate how transparent and easy to use their website is, enhancing my shopping experience.
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Frequently Asked Questions (FAQ)
When designing in the MHQ1005P3N9BT000, how can I ensure stable inductance under high-frequency noise conditions in a 5G front-end module?
To maintain stable inductance in high-frequency circuits like 5G front-end modules, ensure operating frequencies stay well below the MHQ1005P3N9BT000's self-resonant frequency of 5GHz. Since this inductor has a relatively low inductance value of 3.9 nH and a Q factor of 23 at 250MHz, avoid use beyond 3–3.5GHz to prevent impedance instability. Also, minimize PCB parasitics by using compact layouts and symmetric routing to reduce stray capacitance that could shift resonant behavior. The unshielded construction means sensitive RF traces should be spaced at least 2x the component length away to avoid coupling.
Can the MHQ1005P3N9BT000 replace the Murata LQP03TN3N9B02D in a high-Q matching network, and what are the key trade-offs?
The MHQ1005P3N9BT000 can serve as a functional alternative to the Murata LQP03TN3N9B02D in many matching networks, both offering 3.9nH inductance in a 0402 package. However, the MHQ1005P3N9BT000 has a tighter tolerance of ±0.1nH vs. ±0.2nH on the Murata, improving matching precision. While Murata's device typically offers higher Q (>28), the TDK's Q of 23 at 250MHz may limit efficiency in narrowband high-performance RF stages. Use the MHQ1005P3N9BT000 where cost and tolerance are critical, but verify Q margin in the final circuit to avoid gain or efficiency loss.
What are the reliability risks of using the MHQ1005P3N9BT000 in automotive RF applications with frequent thermal cycling?
The MHQ1005P3N9BT000 supports a wide operating temperature range of -55°C to 125°C, making it suitable for under-hood or exterior automotive electronics. However, as an unshielded multilayer ceramic inductor, it is sensitive to mechanical stress from PCB flexing during thermal cycling. To mitigate cracking risks, avoid placing the MHQ1005P3N9BT000 near board edges or large thermal vias, and use compliant solder joints via proper pad design per IPC-7351. Also, ensure reflow profiles stay within JEDEC MSL1 limits to prevent moisture-related failures during soldering.
How does the MHQ1005P3N9BT000's 90mOhm DCR impact power efficiency in a low-voltage power amplifier (PA) bias line?
The MHQ1005P3N9BT000's maximum 90mOhm DCR introduces minimal resistive loss, making it suitable for low-current PA bias lines up to 500mA. At full 900mA DC current, I²R losses reach ~72mW, which may lead to thermal derating in densely packed RFIC layouts. However, this inductor lacks a defined saturation current (Isat), so core performance under combined AC+DC bias is uncertain. For PA bias applications, verify that inductance remains stable under operating current via bench testing, and consider adding a soft-start circuit to reduce transient stress on the MHQ1005P3N9BT000.
What design challenges arise from using an unshielded inductor like the MHQ1005P3N9BT000 in a dense multilayer RF board?
Using the unshielded MHQ1005P3N9BT000 in high-density RF designs risks magnetic coupling with adjacent traces or components, especially in compact 5G or Wi-Fi 6E modules. To minimize crosstalk, orient the MHQ1005P3N9BT000 with its short axis (0603 footprint dimension) perpendicular to nearby sensitive lines, and maintain keep-out zones of at least 1mm. Route ground planes underneath with limited copper coverage directly under the inductor to reduce eddy currents. Simulate near-field coupling in EM tools before layout finalization, as the ceramic, non-magnetic core offers no flux containment, increasing EMI susceptibility in stacked board configurations.
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.
MHQ1005P3N9BT000 CAD Models
TDK Corporation MHQ1005P3N9BT000 PCB symbols & footprints
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