The **SES-1AA-R** is a specific electronic component, typically identified as a **Micro Fuse** from the **SES series**, often manufactured by companies like *Sichuan SOC Electronics* or similar specialized circuit protection manufacturers. It is designed for overcurrent protection in compact electronic devices. --- ### 1. Key Technical Specifications The following table highlights the typical electrical characteristics of the SES-1AA-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Micro Fuse / Subminiature Fuse | | **Rated Current** | 1.0 Ampere (1A) | | **Rated Voltage** | 250V AC | | **Breaking Capacity** | 35A or 50A @ 250VAC (Typical) | | **Fuse Characteristic** | Time-Lag (Slow Blow) | | **Mounting Type** | Through-hole (Radial Leads) | | **Body Material** | Thermoplastic (UL 94-V0) | --- ### 2. Physical Characteristics and Dimensions The "AA" in the part number usually refers to the physical form factor, which is a **Radial Taped** or **Radial Lead** cylindrical/rectangular body. * **Shape:** Square or Round subminiature body. * **Lead Spacing:** Usually 5.08mm. * **Termination:** Tin-plated copper leads. * **Color:** Often Red or Brown (standard for slow-blow micro fuses). --- ### 3. Functional Features * **Slow Blow (Time-Lag):** Unlike "Fast-Acting" fuses, the SES-1AA-R is designed to withstand temporary current surges (inrush current) without blowing. This is essential for circuits with capacitors or motors. * **Space Efficient:** Its small footprint makes it ideal for high-density Printed Circuit Boards (PCBs). * **Safety Standards:** Usually complies with IEC 60127-3 or UL 248-14 standards. --- ### 4. Common Applications Due to its 1A rating and slow-blow nature, this part is commonly found in: 1. **Power Supplies:** Primary side protection for AC/DC adapters. 2. **Consumer Electronics:** LED TVs, chargers, and set-top boxes. 3. **Industrial Controls:** Small-scale automation modules. 4. **Home Appliances:** Control boards for washing machines or microwaves. --- ### 5. Part Number Breakdown (Typical) While naming conventions vary slightly by manufacturer, the code generally breaks down as follows: * **SES:** Series Name (Subminiature Fuse). * **1:** Current Rating (1 Amp). * **AA:** Package/Lead style (Radial). * **R:** RoHS Compliant (Lead-free).