The part number **NWWSNWW3JB1R00** corresponds to a specific type of high-precision electronic resistor manufactured by **Stackpole Electronics**. Below is a detailed breakdown of its specifications, construction, and technical characteristics. --- ## 1. Part Number Breakdown To understand this component, we can decode the manufacturer's nomenclature: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | NWWS | Non-Inductive Wirewound (Silicone Coated) | | **Size/Power** | 3 | 3 Watts power rating | | **Tolerance** | J | ±5% (Standard for this series) | | **Packaging** | B | Bulk Packaging | | **Resistance** | 1R00 | 1.00 Ohm (Ω) | --- ## 2. Technical Specifications These are the primary electrical and physical characteristics of the NWWSNWW3JB1R00: | Property | Value | | :--- | :--- | | **Resistance Value** | 1.0 Ω | | **Power Rating** | 3 Watts @ 25°C | | **Tolerance** | ±5% | | **Technology** | Wirewound (Non-Inductive) | | **Temperature Coefficient** | ±50 ppm/°C (Typical for this range) | | **Operating Temp Range** | -55°C to +350°C | | **Coating** | Conformal Silicone | --- ## 3. Key Features and Applications ### Non-Inductive Design (NWW) Standard wirewound resistors are essentially coils of wire, which creates significant **inductance**. The "NWW" designation means this part uses an **Ayrton-Perry winding** (wires wound in opposite directions). This cancels out the magnetic fields, making it suitable for high-frequency applications where standard wirewounds would cause signal distortion. ### Thermal Performance Because it uses a silicone coating and a ceramic core, it can withstand extremely high temperatures (up to 350°C). This makes it ideal for environments with poor ventilation or high ambient heat. ### Common Applications * **Audio Equipment:** Used in crossovers and amplifiers where low inductance is required to maintain signal purity. * **Power Supplies:** Used as a current sense resistor or a bleeder resistor. * **Industrial Controls:** For snubbers and voltage dividers in harsh environments. * **Test & Measurement:** Where high stability and precision are required under load. --- ## 4. Physical Dimensions (Typical for 3W Series) * **Body Length:** ~13.5 mm (0.531 inches) * **Body Diameter:** ~5.5 mm (0.216 inches) * **Lead Diameter:** ~0.8 mm (20 AWG) ---