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| PartNumber | ESD-R-38B | ESD-R-38 | ESD-R-31C |
| Description | Ferrite Toroids / Ferrite Rings Ferrite Bead Incased EMI 17.9mm | Ferrite Toroids / Ferrite Rings 17.5mm | EMI/RFI Suppressors & Ferrites Ferrite Toroids / Ferrite Rings 19mm |
| Manufacturer | KEMET | KEMET | Kemet |
| Product Category | Ferrite Toroids / Ferrite Rings | Ferrite Toroids / Ferrite Rings | Ferrite Cores - Cables and Wiring |
| RoHS | Y | Y | - |
| Product Type | Ferrite Toroids / Ferrite Rings | Ferrite Toroids / Ferrite Rings | Bare |
| Product | Toroids | Toroids | Toroids |
| Inside Diameter | 17.9 mm | 17.5 mm | 19 mm |
| Outside Diameter | 42.4 mm | 39 mm | 31 mm |
| Outside Length | 16 mm | 14 mm | 15 mm |
| Series | ESD-R-B | ESD-R | ESD-R |
| Packaging | Bulk | Bulk | Bulk |
| Core Material | Manganese-Zinc | Manganese-Zinc | Nickel-Zinc |
| Frequency | 100 MHz | 100 MHz | 300 MHz |
| Impedance | - | - | - |
| Inductance | - | - | - |
| Type | EMI, Solid Toroidal Cores | EMI, Solid Toroidal Cores | EMI Solid Toroidal Cores |
| Brand | KEMET | KEMET | - |
| Maximum Operating Temperature | + 60 C | - | - |
| Minimum Operating Temperature | - 25 C | - | - |
| Factory Pack Quantity | 240 | 200 | - |
| Subcategory | Ferrites | Ferrites | - |
| Test Frequency | 100 MHz | 100 MHz | 300MHz |
| Unit Weight | - | 2 oz | - |
| Material | - | - | - |
| Length | - | - | 0.315" (8.00mm) |
| Mounting Type | - | - | Free Hanging |
| Design | - | - | Solid |
| Inner Dimension | - | - | 0.748" Dia (19.00mm) |
| Outer Dimension | - | - | 1.220" Dia (31.00mm) |