0402CS-3N3XJRW - 3.3nH 840mA RF Inductor | Coilcraft
Référence : 0402CS-3N3XJRW ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.65 | $0,65 |
| 10 | $0.58 | $5,80 |
| 100 | $0.5 | $50,00 |
| 500 | $0.45 | $225,00 |
| 1 000 | $0.4 | $400,00 |
0402CS-3N3XJRW Présentation
A ceramic-core chip inductor is a passive two-terminal component that stores energy in a magnetic field created by a fine wire wound around a ceramic dielectric. In the passive-component hierarchy, it sits under inductors -> fixed inductors -> RF inductors -> chip inductors. Ceramic cores are preferred for RF work because their low magnetic permeability and low loss allow very high self-resonant frequencies and high Q at gigahertz frequencies, unlike ferrite-core inductors that become lossy above several hundred MHz.
Key features of the 0402CS-3N3XJRW include a tight 5% inductance tolerance, a very high self-resonant frequency of up to 12.7 GHz for the series, and qualification to the AEC-Q200 automotive passive-component quality standard. The part is rated for operation from -40C to +125C, making it suitable for automotive and other high-temperature environments where standard commercial inductors cannot survive.
Technically, the wirewound construction on a ceramic core delivers stable, predictable inductance with minimal parasitic loss, which is critical in matching networks, filters, and bias tees operating in the VHF-to-microwave range. The 66 mOhm DCR minimizes insertion loss and DC voltage drop in RF choke and bias-feed positions.
Typical applications include RF matching networks in 2.4 GHz and 5 GHz radios, antenna tuning circuits, VCO tanks, and supply-line RF chokes for PA and LNA bias circuits. Its tiny 0402 footprint suits dense smartphone, IoT, and automotive telematics boards.
Design tip: at 3.3 nH the self-resonant frequency is extremely high, but board parasitics still dominate - keep pads minimal and verify with the Coilcraft SPICE/L numerical models before production.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour 0402CS-3N3XJRW — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec 0402CS-3N3XJRW (même facteur de forme et même empreinte) — différant par Inductance, Package, Packaging, Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
0402CS-3N3XGRW
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
0402CS-3N0XJLW
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
0402CS-3N6XJLW
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
0402CS-2N8XJLW
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
0402CS-22NXJLW
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$0.08 / unité
Voir la fiche technique →0402CS-3N3XJRW Valeurs maximales et caractéristiques électriques
| Inductance | 3.3 nH |
| Inductance Tolerance | 5% |
| Current Rating (RMS) | 840 mA |
| DC Resistance (Max) | 66 mOhm |
| Self-Resonant Frequency (Series Max) | up to 12.7 GHz |
| Core Material | Ceramic |
| Construction | Unshielded wirewound |
| Boîtier | 0402 (1005 Metric) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +125C |
| Quality Standard | AEC-Q200 qualified |
| Statut RoHS | Compliant |
| Shielding | Unshielded |
| Type | Fixed RF Inductor |
| Packaging | Tape and Reel (W suffix) |
Configuration des broches de 0402CS-3N3XJRW
| Broche 1 | Terminal 1 — Inductor electrode 1 |
| Broche 2 | Terminal 2 — Inductor electrode 2 (polarity not applicable) |
Applications typiques
0402CS-3N3XJRW convient pour 6 applications: 2.4/5 GHz RF Matching Networks, RF Bias Chokes for PA/LNA Circuits, Automotive Telematics and Connectivity Modules, VCO and Resonant Tank Circuits, Smartphone and Wearable IoT RF Front Ends, Test and Measurement RF Fixtures.
2.4/5 GHz RF Matching Networks
The 0402CS-3N3XJRW is purpose-built for impedance matching in Wi-Fi, Bluetooth, and Zigbee radios operating at 2.4 GHz and 5 GHz. Its 3.3 nH inductance with 5% tolerance provides a predictable reactance of about 51 ohms at 2.45 GHz and 104 ohms at 5 GHz, while the ceramic core keeps Q high exactly where ferrite inductors collapse. At these frequencies the very high self-resonant frequency (series maximum up to 12.7 GHz) means the part behaves as a near-ideal inductor across both bands, avoiding the resonant shifts that plague cheaper multilayer parts. Place it directly at the antenna feed or PA/LNA matching pad on the 0402 land pattern, keeping pad size minimal so board parasitics do not detune the network.
Recommandé
RF Bias Chokes for PA/LNA Circuits
In power amplifier and low-noise amplifier bias feeds, the 0402CS-3N3XJRW acts as an RF choke that passes DC bias while blocking RF signal from leaking into the supply rail. The 840 mA rating and 66 mOhm maximum DCR mean only about 46 mV of drop at full rated current, preserving PA supply headroom and efficiency. Because the ceramic core is non-magnetic, there is no saturation or permeability drift with DC bias, a common failure mode of ferrite chokes in PA output networks. Use it where the RF signal is well below the part's self-resonant point; for deeper rejection, cascade the inductor with an 0402 shunt capacitor forming a simple low-pass bias tee on the supply line.
Recommandé
Automotive Telematics and Connectivity Modules
The 0402CS-3N3XJRW is AEC-Q200 qualified and rated from -40C to +125C, which are the two gate requirements for automotive RF assemblies such as telematics units, keyless-entry receivers, and V2X modules. According to Coilcraft, the 0402CS series is explicitly targeted at automotive and other high-temperature applications. In these designs the inductor serves in GNSS LNA matching and antenna tuning circuits where both thermal endurance and stable GHz-range inductance are essential. The ceramic-core construction maintains predictable reactance across the full temperature range, unlike ferrite parts whose permeability shifts with temperature, preserving filter center frequencies from cold crank to underhood ambient conditions.
Recommandé
VCO and Resonant Tank Circuits
Voltage-controlled oscillators for wireless transceivers rely on LC tanks whose Q sets phase noise, and the 0402CS-3N3XJRW's ceramic-core wirewound construction delivers the low loss needed at GHz frequencies. The 3.3 nH value suits tank designs in the 1-3 GHz range paired with small varactor capacitances, and the tight 5% tolerance limits tank frequency spread between units. Because the inductor is unshielded, layout discipline matters: orient it perpendicular to adjacent inductors to minimize mutual coupling, or space pads at least one component pitch apart. Always verify the exact SRF of the 3.3 nH value from the Coilcraft datasheet and simulate the tank with the manufacturer's SPICE model before committing the layout.
Recommandé
Smartphone and Wearable IoT RF Front Ends
Space-constrained wearable and IoT products need RF passives in the smallest reliable package, and the 0402 (1005 metric) 0402CS-3N3XJRW fills that role with automotive-grade robustness. Its 840 mA rating comfortably covers the DC feed requirements of small coin-cell or LDO-powered radios, while the 66 mOhm DCR keeps insertion loss low, which directly extends battery life in transmit-heavy duty cycles. The part handles both antenna matching and supply-line filtering on the same board, letting designers standardize on one inductor series and reduce BOM complexity. Tape-and-reel packaging supports high-volume SMT placement, and RoHS compliance keeps the finished product aligned with global environmental regulations for consumer electronics.
Recommandé
Test and Measurement RF Fixtures
RF test fixtures, bias tees, and evaluation boards benefit from the 0402CS-3N3XJRW's combination of high SRF, low DCR, and well-documented simulation models. In a bias tee, the 3.3 nH inductor series element sets the low-frequency cutoff together with the blocking capacitor, and the ceramic core ensures the insertion-loss curve stays smooth into the multi-GHz region without ferrite loss bumps. Because Coilcraft publishes SPICE models and the part is available in small quantities from DigiKey and Mouser, prototypes can exactly match production hardware. The -40C to +125C rating also means temperature-chamber testing will not push the inductor outside its specified operating envelope during characterization runs.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour 0402CS-3N3XJRW — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 0402CS-3N3XGRW | 0402CS-3N0XJLW | 0402CS-3N6XJLW | 0402CS-2N8XJLW | 0402CS-22NXJLW |
|---|---|---|---|---|---|---|
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same |
| Brand | Coilcraft | Coilcraft | Coilcraft | Coilcraft | Coilcraft | Coilcraft |
| Inductance | 3.3 nH | 3.3 nH | 3.0 nH | 3.6 nH | 2.8 nH | 22 nH |
| Tolerance | 5% | 2% | 5% | 5% | 5% | 5% |
| AEC-Q200 | Qualified | Qualified | Qualified (0402CS series) | Qualified (0402CS series) | Qualified (0402CS series) | Qualified (0402CS series) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Principaux différenciateurs
- Tight 5% tolerance option within 0402CS 3.3 nH family (vs 0402CS-3N0XJLW)
- Automotive AEC-Q200 qualification with -40C to +125C rating (vs 0402DC series (higher-Q successor))
- Very high self-resonant frequency from ceramic core (vs 0402CS-22NXJLW)
Notes de conception
At 3.3 nH the inductor reactance is only about 10 ohms at 500 MHz and 51 ohms at 2.45 GHz, so in low-GHz matching networks board effects dominate. Keep pads to the minimum recommended land pattern, avoid long shared return paths under the part, and remove ground pour directly beneath the component for the highest achievable Q. Use Coilcraft's published SPICE/S-parameter models rather than ideal inductor models in simulation, since parasitic capacitance sets the real self-resonance below the 12.7 GHz series maximum.
Estimated: at the full 840 mA rating across 66 mOhm maximum DCR, dissipation is I^2R = 0.047 W, producing modest self-heating that is well within the -40C to +125C rating. However, in bias-choke positions where DC current flows continuously, verify both the RMS rating and the DC-bias behavior; ceramic cores do not saturate like ferrite, but winding temperature rise should still be budgeted against ambient extremes in automotive enclosures.
Do not rely on the 12.7 GHz self-resonant frequency as if it applied to every value - it is the series maximum. Check the datasheet SRF curve for the specific 3.3 nH value. Also, when substituting nearby values (3.0 nH or 3.6 nH), a 9% inductance change shifts a resonant tank frequency by roughly 4-5%, which can break narrowband filters or crystal-adjacent matching circuits even though the footprint is unchanged.
Informations de conformité
RoHS compliance indicated by LCSC/JLCPCB listings. AEC-Q200 (passives) qualification per Coilcraft product page; AEC-Q100 not applicable to passive components. REACH/halogen-free status not stated in provided data.
