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0402DC-3N9XGRW
Coilcraft
0402DC-3N9XGRW
2172 Pcs New Original In Stock
3.9 nH Unshielded Wirewound Inductor 2.05 A 46mOhm Max 0402 (1005 Metric)
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5.0 / 5.0
- (415 Ratings)
0402DC-3N9XGRW
Product Overview
9358458
DiGi Electronics Part Number
0402DC-3N9XGRW-DGManufacturer
Coilcraft
0402DC-3N9XGRW
Description
0402DC-3N9XGRWInventory
2172 Pcs New Original In Stock
3.9 nH Unshielded Wirewound Inductor 2.05 A 46mOhm Max 0402 (1005 Metric)
Quantity
Minimum 1
Minimum 1
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0402DC-3N9XGRW Technical Specifications
Category
Fixed Inductors
Packaging
Strip
Series
0402DC
Product Status
Active
Type
Wirewound
Material - Core
Ceramic
Inductance
3.9 nH
Tolerance
±2%
Current Rating (Amps)
2.05 A
Current - Saturation (Isat)
-
Shielding
Unshielded
DC Resistance (DCR)
46mOhm Max
Q @ Freq
69 @ 900MHz
Frequency - Self Resonant
12.65GHz
Ratings
AEC-Q200
Operating Temperature
-40°C ~ 125°C
Inductance Frequency - Test
250 MHz
Features
-
Mounting Type
Surface Mount
Package / Case
0402 (1005 Metric)
Supplier Device Package
0402
Size / Dimension
0.044" L x 0.026" W (1.11mm x 0.66mm)
Height - Seated (Max)
0.026" (0.65mm)
Datasheet & Documents
HTML Datasheet
0402DC-3N9XGRW-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
2457-0402DC-3N9XGRWTR-DG
2457-0402DC-3N9XGRW
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Leur service après-vente est un vrai atout pour leur crédibilité.
Dec 02, 2025
Shipping was incredibly swift, and the packaging ensured everything arrived in perfect condition.
Dec 02, 2025
Their pricing advantage is clear, and their after-sales response makes the whole purchasing process stress-free.
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Frequently Asked Questions (FAQ)
How does the unshielded construction of the 0402DC-3N9XGRW affect PCB layout and nearby component placement in high-density RF designs?
The unshielded wirewound design of the 0402DC-3N9XGRW generates a moderate external magnetic field, which can couple inductively with adjacent traces or passive components. In high-density RF layouts, maintain at least 2–3 mm clearance from sensitive analog circuits, matching networks, or other inductors to avoid unintended mutual inductance. Orient the 0402DC-3N9XGRW perpendicular to nearby inductors if spacing is constrained, and avoid placing it directly under or over high-impedance nodes. Use ground planes cautiously—while helpful for shielding, they can increase parasitic capacitance and shift the self-resonant frequency below the 12.65 GHz spec.
Can the 0402DC-3N9XGRW safely replace a shielded 0402 inductor like the Murata LQP15MN3N9B00D in a 5G mmWave front-end matching network?
Direct replacement of the shielded Murata LQP15MN3N9B00D with the unshielded 0402DC-3N9XGRW is not recommended without re-evaluation of EMI and coupling risks. Although both are 3.9 nH ±2% devices in 0402 packages, the Coilcraft part’s unshielded construction may introduce crosstalk in tightly packed mmWave arrays operating near its 12.65 GHz self-resonant frequency. If space and cost constraints favor the 0402DC-3N9XGRW, perform pre-compliance radiated emissions testing and consider adding localized shielding or increasing trace separation. Also verify that the 2.05 A current rating meets peak envelope power demands under modulated waveforms.
What derating guidelines should I follow for the 2.05 A current rating of the 0402DC-3N9XGRW in automotive under-hood applications approaching 125°C ambient?
Although the 0402DC-3N9XGRW is AEC-Q200 qualified and rated for operation up to 125°C, its 2.05 A current rating is typically specified at 25°C. In under-hood environments where ambient temperatures routinely exceed 105°C, apply a conservative derating factor of 0.6–0.7. This means limiting continuous current to approximately 1.2–1.4 A to avoid excessive conductor heating and potential long-term resistance drift. Monitor PCB copper weight and thermal vias beneath the component—even small improvements in heat dissipation can extend reliability. Always validate with thermal imaging under worst-case load conditions.
How does the ceramic core of the 0402DC-3N9XGRW influence stability and aging compared to ferrite-core alternatives like the TDK MLG0402Q3N9C?
The ceramic core in the 0402DC-3N9XGRW provides superior dimensional stability, near-zero aging drift, and excellent high-frequency performance due to minimal core losses—ideal for stable impedance matching above 1 GHz. Unlike ferrite-core inductors such as the TDK MLG0402Q3N9C, which can exhibit inductance shifts from mechanical stress or temperature cycling, the 0402DC-3N9XGRW maintains ±2% tolerance reliably over time. However, ceramic cores offer lower permeability, so achieving the same inductance in a smaller footprint isn’t possible; this makes the 0402DC-3N9XGRW best suited for applications where stability outweighs size minimization.
Is the 0402DC-3N9XGRW suitable for use in a DC-DC converter’s output filter given its 46 mΩ DCR and lack of specified saturation current?
The 0402DC-3N9XGRW is not ideal for DC-DC converter output filtering despite its low 46 mΩ DCR. As a wirewound RF inductor with no specified saturation current (Isat), it lacks the magnetic core necessary to handle sustained DC bias without risking inductance collapse under load—a critical failure mode in power applications. For output filtering, prefer power inductors like the Coilcraft XAL4020-392MEB (3.9 µH, shielded, with defined Isat). Reserve the 0402DC-3N9XGRW for high-frequency signal paths (e.g., RF matching, bias tees) where its high Q (69 @ 900 MHz) and stable ceramic core provide clear advantages over power-oriented parts.
Quality Assurance (QC)
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0402DC-3N9XGRW CAD Models
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