0402CS-R10XGLW - 100nH 2% RF Chip Inductor | Coilcraft
MPN: 0402CS-R10XGLW β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.14 | $0.14 |
| 10 | $0.11 | $1.10 |
| 100 | $0.08 | $8.00 |
| 500 | $0.06 | $30.00 |
| 1,000 | $0.05 | $50.00 |
0402CS-R10XGLW Overview
A chip inductor is a passive two-terminal component that stores energy in a magnetic field and presents inductive reactance in RF signal paths. Within the passive component hierarchy, it belongs to the fixed inductor family, specifically RF wirewound ceramic-core chip inductors used for impedance matching, resonant tanks, and EMI filtering. The ceramic core is the key differentiator versus ferrite-core chip inductors: ceramic has negligible magnetic loss and near-zero permeability drift, which pushes the self-resonant frequency extremely high and preserves Q at gigahertz frequencies.
Key features of the 0402CS-R10XGLW include a very high self-resonant frequency (up to 12.7 GHz for this inductance value per the Coilcraft 0402CS series page), tight 2% tolerance for repeatable filter and VCO tuning, and a fine wirewound construction that delivers consistent performance across temperature. The AEC-Q200 qualification and 125C rating make it suitable for automotive RF modules such as keyless entry, tire-pressure monitoring, and infotainment antennas.
Technically, the 100 nH value with low distributed capacitance keeps the usable inductive range well above 1 GHz; above the 12.7 GHz self-resonance the part behaves capacitively. Designers should verify the operating frequency stays comfortably below SRF and keep RF current within the 30 mA rating to avoid self-heating and drift.
Typical applications include GPS, Bluetooth, and ISM-band matching networks, LC tank circuits in VCOs, RF chokes, and high-frequency bias tees. It is also used in signal conditioning and EMI filtering in compact automotive modules where board space is minimal.
Design tip: keep adjacent ground planes at least one pad width away to minimize parasitic capacitance and preserve the nominal SRF, and verify DCR (2 ohms) in bias-tee insertion-loss budgets.
This page adds value beyond the manufacturer catalog by consolidating drop-in alternatives, comparison tables, and design guidance for the 0402CS-R10XGLW in one place.
Drop-in alternatives for 0402CS-R10XGLW β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
0402CS-R10XJLW
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
0402CS-100NXJLW
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
0402CS-82NXJLW
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
0402CS-120NXJLW
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
0402DC-R10XGLW
β Drop-Inπ Reference alternative (not in catalog)
0402CS-R10XGLW Maximum Ratings & Electrical Characteristics
| Inductance | 100 nH |
| Inductance Tolerance | 2% |
| DC Resistance (DCR) | 2 ohm |
| Rated Current | 30 mA |
| Self-Resonant Frequency (SRF) | up to 12.7 GHz |
| Core Material | Ceramic |
| Shielding | Unshielded |
| Package | 0402 (1005 metric) SMD |
| Construction | Wirewound |
| Operating Temperature | -40C to +125C |
| Qualification | AEC-Q200 |
| Application | RF, high-temperature, automotive |
| Mounting Type | Surface Mount |
| Terminations | 2 (solderable matte tin over nickel over silver-plated copper per series standard) |
| Product Catalog Code | 71-0402CS-R10XGLW |
0402CS-R10XGLW Pin Configuration
| Pin 1 | Terminal 1 β Inductor terminal (non-polarized, interchangeable with Terminal 2) |
| Pin 2 | Terminal 2 β Inductor terminal (non-polarized, interchangeable with Terminal 1) |
Typical Applications
0402CS-R10XGLW is suitable for 6 applications: GPS / GNSS Matching Networks, Bluetooth / 2.4 GHz ISM Matching, Automotive Keyless Entry / TPMS RF Modules, VCO / PLL Resonant Tank Circuits, RF Bias Tees and Chokes, EMI Filtering in Compact Automotive Electronics.
GPS / GNSS Matching Networks
The 0402CS-R10XGLW's 100 nH inductance with 2% tolerance and self-resonant frequency up to 12.7 GHz makes it an excellent choice for 1575.42 MHz GPS antenna-matching and low-pass filter sections. Ceramic-core wirewound construction keeps Q high at L-band, minimizing insertion loss in the receive path, which directly improves GNSS sensitivity. The tight 2% tolerance keeps filter corner frequencies repeatable across production lots, important because GPS bandpass edges are only tens of MHz away from strong cellular interferers. Place the inductor with short, wide traces and keep ground plane at least one pad width away to preserve the nominal SRF and avoid parasitic detuning.
Recommended
Bluetooth / 2.4 GHz ISM Matching
For 2.4 GHz Bluetooth and ISM-band transceivers, the 0402CS-R10XGLW provides 100 nH with negligible core loss thanks to its ceramic core. At 2.4 GHz the part operates well below its up-to-12.7 GHz SRF, so its impedance remains cleanly inductive for balun-match, harmonic-filter, and bias-tee elements. The 30 mA rating comfortably handles typical BLE radio RF-chain bias currents, and AEC-Q200 qualification plus -40C to +125C operation allow use in automotive-connected modules. Designers should simulate the pad parasitics with the datasheet S-parameter models, since at 2.4 GHz even 0402 land patterns contribute measurable series inductance and shunt capacitance.
Recommended
Automotive Keyless Entry / TPMS RF Modules
Automotive remote keyless entry (typically 315/433 MHz) and TPMS transmitters require inductors qualified to AEC-Q200 that survive -40C to +125C under-hood-adjacent conditions. The 0402CS-R10XGLW meets AEC-Q200 and carries the 125C rating, making it suitable for LC matching and harmonic-suppression networks in these sub-GHz links. The 2% tolerance ensures that antenna-match networks stay centered over production and temperature, preserving transmit range. Because the part is unshielded, keep it away from other inductors or orient orthogonal matching elements to limit magnetic coupling on dense automotive RF boards.
Recommended
VCO / PLL Resonant Tank Circuits
LC-tank VCOs demand inductors with high Q and repeatable inductance to achieve low phase noise and accurate center frequency. The 0402CS-R10XGLW's 2% tolerance limits tank frequency spread, while the ceramic core's absence of magnetic loss keeps unloaded Q high into the gigahertz range, directly benefiting phase-noise performance. With SRF up to 12.7 GHz, the part remains inductive across common VCO bands from hundreds of MHz to several GHz. Keep the tank layout symmetrical and short, and account for the 2 ohm DCR when calculating the loaded Q and phase-noise floor of the oscillator.
Recommended
RF Bias Tees and Chokes
In bias-tee and RF-choke roles, the 0402CS-R10XGLW isolates the DC supply from the RF path while presenting high impedance at the operating frequency. The 100 nH value and 12.7 GHz maximum SRF provide high reactance well into the gigahertz range, and the ceramic core avoids the saturation and loss mechanisms of ferrite chokes. The 2 ohm DCR must be budgeted in the DC drop calculation: at the 30 mA full rating, the inductor drops about 60 mV and dissipates roughly 1.8 mW. Verify the SRF in-circuit, since layout parasitics typically lower the effective self-resonance below the free-space datasheet value.
Recommended
EMI Filtering in Compact Automotive Electronics
Per Coilcraft's product overview, the 0402CS family serves power conversion, EMI filtering, signal conditioning, and energy-storage roles. In compact automotive modules, the 0402CS-R10XGLW forms LC low-pass filters that suppress conducted emissions on signal and supply lines, with the 100 nH value effective against tens-to-hundreds of MHz noise. AEC-Q200 qualification and the -40C to +125C range satisfy automotive environmental requirements, and the 2 ohm DCR is acceptable for signal-line filtering where DC drop is small. Pair the inductor with X7R or C0G capacitors sized for the target attenuation, and place the filter directly at the connector to maximize high-frequency shunting effectiveness.
Recommended
Recommended Products Summary
Engineering reference data for 0402CS-R10XGLW β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 0402CS-R10XJLW | 0402CS-82NXJLW | 0402CS-120NXJLW | 0402DC-R10XGLW |
|---|---|---|---|---|---|
| Package | 0402 (1005) | 0402 (1005) - same | 0402 (1005) - same | 0402 (1005) - same | 0402 (1005) - same |
| Brand | Coilcraft | Coilcraft | Coilcraft | Coilcraft | Coilcraft |
| Inductance | 100 nH | 100 nH | 82 nH | 120 nH | 100 nH |
| Inductance Tolerance | 2% | 5% | 5% | 5% | 2% |
| Qualification | AEC-Q200, -40C to +125C | AEC-Q200, -40C to +125C | AEC-Q200, -40C to +125C | AEC-Q200, -40C to +125C | AEC-Q200 (verify per value) |
| Series Distinguishing Feature | High SRF up to 12.7 GHz, tight 2% tol | Same, 5% tol, lower cost | Lower inductance value | Higher inductance value | Up to 50% higher Q |
Key Differentiators
- Tight 2% inductance tolerance (vs 0402CS-R10XJLW)
- Higher Q option exists in same footprint (vs 0402DC-R10XGLW)
- Very high self-resonant frequency (vs 0402CS-120NXJLW)
Design Notes
The 0402CS-R10XGLW achieves SRF up to 12.7 GHz only as a free-standing component. On a real PCB, pad capacitance and trace inductance shift the effective self-resonance downward. Use Coilcraft's published S-parameter models and simulate the complete pad stack; keep the ground plane at least one pad width from the body and route the inductor in-line rather than with stubs. At 2.4 GHz and above, even 0.5 pF of pad parasitic measurably detunes matching networks built around the nominal 100 nH value.
Respect the 30 mA current rating. Estimated: at the rated 30 mA through the 2 ohm winding, the part dissipates only about 1.8 mW, but DC bias in a choke application combined with RF current can exceed the rating invisibly. Exceeding the rating raises winding temperature, increases copper resistance, and can shift inductance out of the 2% tolerance band - a silent failure mode in precision VCO tanks. Always sum DC bias and RMS RF current and derate at high ambient temperatures near +125C.
The 0402CS series is unshielded. On dense RF boards, orient adjacent inductors at 90 degrees or separate them by at least two body lengths to limit magnetic coupling, which can cause unintended filter coupling or oscillator injection locking. For reflow, follow the Coilcraft-recommended profile in the 0402CS datasheet; the fine wirewound construction tolerates standard SAC305 lead-free reflow but avoid hand-soldering iron contact with the winding terminations for extended periods.
Compliance Information
AEC-Q200 qualification and -40C to +125C rating confirmed per Coilcraft official product page. RoHS/REACH/lead-free status not explicitly stated in the verified data - confirm via Coilcraft product page or compliance certificate.
