CIH03Q3N9CNC

Fixed Inductors Overview

The Samsung Electro-Mechanics CIH03Q3N9CNC is a fixed multilayer chip inductor with an inductance of 3.9 nH and a tolerance of ±0.2 nH. It features a maximum DC resistance of 300 mΩ and a rated current of 270 mA. The component operates within a temperature range of -55°C to 125°C and has a self-resonant frequency of 7.3 GHz. Measured at 500 MHz, the Q value is 13. It utilizes a 0201 (0603 metric) surface-mount package measuring 0.60 mm x 0.30 mm.

Fixed Inductors Feature Summary

• Unshielded multilayer construction for high-frequency signal integrity
• Compact 0201 footprint designed for space-constrained surface-mount applications
• High self-resonant frequency capability up to 7.3 GHz

Fixed Inductors Applications

• RF circuit impedance matching networks
• High-frequency filtering in mobile communication devices
• Power management integrated circuit decoupling

Fixed Inductors Procurement Notes

This component is officially classified as obsolete and no longer manufactured. Procurement is restricted to remaining stock from authorized distributors or secondary market suppliers. Verify part authenticity carefully due to potential availability of refurbished or counterfeit units. Confirm end-of-life documentation and check for direct replacement alternatives before finalizing acquisition plans.

Fixed Inductors Selection Notes

Select this component only if legacy design compatibility requires the specific 3.9 nH value and 0201 form factor. Given its discontinued status, evaluate alternative manufacturers offering equivalent electrical parameters such as DCR, current rating, and SRF. Ensure that substitute parts meet the same thermal and mechanical specifications for the target application environment.

Fixed Inductors Part Context

The CIH03Q series represents Samsung Electro-Mechanics' line of ultra-small chip inductors designed for portable electronics. This specific model belongs to the unshielded category, prioritizing low cost and minimal height profile. It was widely utilized in early-generation smartphones and wireless modules where space optimization was critical for RF front-end designs.

Fixed Inductors Replacement Considerations

Direct substitutes include Johanson Technology LRC0201BS3N9GV001T and TDK MLG0603P3N9ST000. These alternatives offer identical inductance values and package dimensions, facilitating drop-in replacements for existing PCB layouts without requiring schematic modifications.