The **CT1206CSF-R12J** is a surface-mount electronic component, specifically a **Wire-Wound Chip Inductor**. It is designed for high-frequency applications where stability and precision are required. Below is a detailed breakdown of its specifications and characteristics. ### 1. Part Number Deciphering Understanding the naming convention helps identify the specific properties of the component: | Segment | Meaning | Specification | | :--- | :--- | :--- | | **CT** | Series Prefix | Central Technologies Series | | **1206** | Package Size | 1.2 x 0.6 inches (3.2 x 1.6 mm) | | **CSF** | Construction | Ceramic Core / Standard Frequency | | **R12** | Inductance Value | **0.12 µH** (120 nH) | | **J** | Tolerance | **±5%** | --- ### 2. Technical Specifications This inductor is built using a ceramic core with a wire winding, providing excellent performance in RF circuits. | Parameter | Value | | :--- | :--- | | **Inductance** | 120 nH (0.12 µH) | | **Tolerance** | ±5% | | **Quality Factor (Q Min)** | 60 @ 350 MHz | | **Self-Resonant Frequency (SRF)** | 1100 MHz (Typical) | | **DC Resistance (DCR Max)** | 0.51 Ω | | **Rated DC Current (Idc)** | 650 mA | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Key Electronic Characteristics * **Ceramic Core:** Unlike ferrite cores, the ceramic core does not saturate. This ensures the inductance remains constant even when high current is applied, though it results in lower inductance values compared to ferrite. * **High Q Factor:** The high "Quality" factor indicates low energy loss, making it ideal for resonant circuits and filters. * **SRF (Self-Resonant Frequency):** At 1100 MHz, this part is suitable for UHF (Ultra High Frequency) applications. Beyond this frequency, the component will behave like a capacitor rather than an inductor. --- ### 4. Typical Applications The CT1206CSF-R12J is commonly used in the following areas: 1. **RF Tranceivers:** Used in matching networks for antennas. 2. **Filter Circuits:** High-pass, low-pass, and band-pass filters for signal processing. 3. **Wireless Communication:** Bluetooth, Wi-Fi, and cellular infrastructure. 4. **Oscillators:** Providing stable inductance for frequency generation. --- ### 5. Footprint (1206 Metric) For PCB design, use the following standard 1206 dimensions: ```text Length: 3.20 mm (0.126 in) Width: 1.60 mm (0.063 in) Height: 1.10 mm (0.043 in) ```