The part number **B65701-W-R30** refers to a high-quality **Ferrite Core** accessory, specifically a **PM (Pot Core Module) 70/54** series component manufactured by **TDK Electronics (formerly EPCOS)**. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications This part is a core set typically used in high-power transformers and energy storage inductors. | Attribute | Detail | | :--- | :--- | | **Manufacturer** | TDK Electronics (EPCOS) | | **Core Shape** | PM (Pot Module) | | **Core Size** | 70/54 (Approx. 70mm diameter) | | **Material Grade** | N30 | | **Magnetic Path Length ($l_e$)** | ~144 mm | | **Effective Volume ($V_e$)** | ~102000 $mm^3$ | --- ### 2. Material Properties: N30 The "R30" suffix indicates the use of **N30 material**. This material is a High Permeability Manganese-Zinc (MnZn) ferrite. * **Permeability ($\mu_i$):** Approximately 4300. * **Frequency Range:** Best suited for frequencies up to **400 kHz**. * **Application:** Primarily used for wideband transformers and low-loss energy storage. --- ### 3. Key Applications Because of the PM shape design, this part offers excellent shielding and a large winding area, making it ideal for: 1. **Telecommunications:** High-stability transformers. 2. **Power Electronics:** Heavy-duty SMPS (Switched-Mode Power Supplies). 3. **Industrial:** High-frequency welding equipment or induction heating. 4. **Automotive:** DC/DC converters in electric vehicles. --- ### 4. Physical Dimensions (Approximate) | Dimension | Value (mm) | | :--- | :--- | | **Outer Diameter** | 70.0 ± 1.5 | | **Height (Total)** | 54.0 ± 0.5 | | **Core Cross Section ($A_e$)** | 700 $mm^2$ | --- ### 5. Part Number Breakdown `B65701` (Core Series/Shape) + `W` (Mounting/Type) + `R30` (Material Designation) ```text B65701: Series for PM 70/54 Cores W: Threaded or specific mounting style (varies by datasheet version) R30: N30 Material Grade (High Permeability) ```