The **S-R35** typically refers to a high-performance **Carbon-Film Resistor** or a specific **Current Sensing Resistor** series (often associated with brands like Futaba or specialized industrial component manufacturers). Below is a breakdown of the electronic specifications and characteristics common to this component class. --- ### 1. General Specifications The S-R35 series is designed for stability and high-heat dissipation. | Feature | Specification (Typical) | | :--- | :--- | | **Material** | Carbon Film or Metal Plate | | **Power Rating** | 0.25W to 2W (depending on physical size) | | **Tolerance** | ±2%, ±5% | | **Operating Temperature** | -55°C to +155°C | | **Mounting Type** | Through-hole (Axial) | ### 2. Key Characteristics The S-R35 part is valued in electronic circuits for the following reasons: * **Low Inductance:** If used as a current sensor, the R35 architecture minimizes "noise" in high-frequency switching environments. * **Flameproof Coating:** Most versions are coated with a non-flammable silicone or epoxy to ensure safety during overload conditions. * **Thermal Stability:** It maintains a relatively constant resistance value even as the component heats up during operation. ### 3. Usage in Circuitry These parts are commonly found in the following applications: 1. **Audio Equipment:** Used in the output stages of amplifiers for signal stabilization. 2. **Power Supplies:** Acts as a "shunt" or current-sensing resistor to monitor the flow of electricity and prevent surges. 3. **Radio Frequency (RF) Devices:** Due to low parasitic inductance, it is effective in basic filtering. ### 4. Identification (Color Coding) If the S-R35 is a standard 4-band carbon resistor, the color bands represent its value. For a **35 Ohm** resistor, the bands would be: * **Band 1:** Orange (3) * **Band 2:** Green (5) * **Band 3:** Black (Multiplier: x1) * **Band 4:** Gold/Silver (Tolerance: 5%/10%) ---