It appears you are referring to the **1235 series** of electronic components. In the electronics industry, "1235" most commonly refers to specific dimensions for Surface Mount Devices (SMD) or specific Integrated Circuit (IC) part numbers. --- ### 1. 1235 SMD Package Dimensions In the context of passive components (like inductors or shielding clips), "1235" typically denotes the physical size of the component in millimeters. | Dimension | Measurement (Metric) | | :--- | :--- | | **Length** | 12.0 mm | | **Width** | 3.5 mm | | **Common Use** | Power Inductors, SMD Shielding Clips, Custom Resistor Networks | ### 2. Common Electronic Parts with "1235" Designation There are several specific components that use "1235" in their part numbers. Below are the most frequent applications: #### A. LP1235 (Supercapacitors) These are 3.7V or 3.8V Lithium-ion capacitors. * **Capacity:** Usually ranges from 10F to 40F. * **Application:** Used for power backup in IoT devices, smart meters, and dashcams. * **Key Feature:** High energy density compared to standard EDLC supercapacitors. #### B. NCP1235 (Fixed Frequency PWM Controller) A popular Integrated Circuit from ON Semiconductor. * **Function:** Flyback supply controller. * **Use Case:** AC-DC adapters for laptops and consumer electronics. * **Key Features:** Frequency folding for high efficiency at light loads and internal ramp compensation. #### C. High-Power SMD Inductors (1235 Series) Often found in DC-DC converter circuits. * **Construction:** Shielded ferrite core. * **Role:** Energy storage and filtering in power supplies. * **Size:** 12mm x 12mm with a height of 3.5mm (hence 1235). --- ### 3. Technical Summary Table | Part Category | Primary Function | Key Specification | | :--- | :--- | :--- | | **IC (NCP1235)** | Power Management | PWM Control / 65-100 kHz | | **Capacitor (LP1235)** | Energy Storage | 3.7V / High Cycle Life | | **Inductor (1235)** | Filtering | High Saturation Current |