CTTF0402F-7N2B

Overview

The CTTF0402F-7N2B is a fixed thin film chip inductor from Central Technologies, housed in a 0402 surface-mount package. It features a nominal inductance of 7.2 nH with a tolerance of ±0.1 nH (code B). The component has a maximum DC resistance of 900 mΩ and supports a maximum rated current of 260 mA. It operates within a temperature range of -40 °C to 85 °C, maintains a minimum quality factor of 13 at the nominal inductance, and achieves a self-resonant frequency of 6000 MHz.

Feature Summary

• Utilizes thin film technology for precise inductance control in RF applications
• Offers ultra-tight tolerance options including ±0.1 nH for critical signal integrity
• Provides high self-resonant frequency performance suitable for microwave frequencies

Applications

• RF circuit design
• Impedance matching networks
• High-frequency filtering

Procurement Notes

Verify the specific tolerance suffix 'B' corresponds to the required ±0.1 nH accuracy during ordering. Confirm that the 260 mA current rating and 900 mΩ DCR meet the target circuit's power handling requirements. Ensure the 0402 footprint aligns with the PCB layout specifications. Check RoHS compliance status if lead-free assembly is mandated by the manufacturing process.

Selection Notes

Select this component when sub-nanohenry precision is necessary for RF tuning or matching. Compare against standard general-purpose inductors which typically offer wider tolerances like ±5% or ±10%. Consider the higher cost associated with thin film processes versus wire-wound alternatives. Evaluate the trade-off between the tight tolerance benefits and the slightly higher DC resistance compared to larger packages.

Part Context

This part belongs to the CTTF0402F series, which covers inductance values from 0.2 nH to 33 nH. The series includes various tolerance codes such as C, S, F, G, H, and J alongside the B code. It serves as a specialized solution for applications requiring stable, low-inductance components in compact form factors, distinct from the broader CTTF series offerings.

Replacement Considerations

Direct substitutes include other CTTF0402F variants with different tolerance codes if precision allows, such as CTTF0402F-7N2C or CTTF0402F-7N2S. Cross-brand equivalents must match the 7.2 nH value, 0402 package, and similar SRF characteristics.