KEMET No Ferrite Ring, 42.4 Dia. x 16mm, For Round Cable, Apertures: 1, Diameter 17.9mm
- RS Stock No.:
 - 169-6783
 - Mfr. Part No.:
 - ESD-R-38B
 - Brand:
 - KEMET
 
Bulk discount available
Subtotal (1 box of 240 units)*
£500.16
(exc. VAT)
£600.24
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- Shipping from 27 May 2026
 
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units  | Per unit  | Per Box*  | 
|---|---|---|
| 240 - 240 | £2.084 | £500.16 | 
| 480 + | £1.965 | £471.60 | 
*price indicative
- RS Stock No.:
 - 169-6783
 - Mfr. Part No.:
 - ESD-R-38B
 - Brand:
 - KEMET
 
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all  | Attribute | Value | 
|---|---|---|
| Brand | KEMET | |
| Series | ESD-R Toroidal Cores | |
| Type | Toroid Core | |
| Application | Round Cable | |
| Material | Manganese-Zinc (Coating), Nickel Zinc | |
| Key | No | |
| Impedance at 25 MHz | 180Ω | |
| Openable | No | |
| Outer Dimensions | 42.4 Dia. x 16mm | |
| Impedance at 100 MHz | 350Ω | |
| Aperture Diameter | 17.9mm | |
| Number of Apertures | 1 | |
| Outer Height | 16mm | |
| Outer Width | 42.4mm | |
| Select all | ||
|---|---|---|
Brand KEMET  | ||
Series ESD-R Toroidal Cores  | ||
Type Toroid Core  | ||
Application Round Cable  | ||
Material Manganese-Zinc (Coating), Nickel Zinc  | ||
Key No  | ||
Impedance at 25 MHz 180Ω  | ||
Openable No  | ||
Outer Dimensions 42.4 Dia. x 16mm  | ||
Impedance at 100 MHz 350Ω  | ||
Aperture Diameter 17.9mm  | ||
Number of Apertures 1  | ||
Outer Height 16mm  | ||
Outer Width 42.4mm  | ||
- COO (Country of Origin):
 - CN
 
SD-R-B Series, Toroidal Cores with Snail-Shaped Case
The KEMET ESD-R-B series solid toroidal cores are designed to use on round cables. The wide range of Manganese Zinc (MnZn) and Nickel Zinc (NiZn) options allows for targeting of specific frequency ranges. The snail-shaped case allows fixing the core in the application to avoid contact with other components.
EMI cores are part of a family of passive components which address the issues of noise or electromagnetic interference (EMI) in circuits or systems.
EMI cores are part of a family of passive components which address the issues of noise or electromagnetic interference (EMI) in circuits or systems.
 MnZn < 10 MHz (AM band range) and NiZn < 300 MHz (FM band range) options available
 Solid construction
 Easy to install with one M4 screw
 UL94 V–2 flame retardant rated case
 Solid construction
 Easy to install with one M4 screw
 UL94 V–2 flame retardant rated case
Applications
 Consumer electronics
 Air conditioners
 Power conditioners
 Refrigerators
 Washing machines
 Industrial equipment
 Medical equipment
 Consumer electronics
 Air conditioners
 Power conditioners
 Refrigerators
 Washing machines
 Industrial equipment
 Medical equipment
Related links
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 - Essentra No Ferrite Sleeve For Multi-Turn Suppression Core Diameter 7mm
 - RS PRO No Ferrite Sleeve For EMI Suppression Diameter 13mm
 - KEMET Openable Ferrite Ring For Consumer Electronics Diameter 6mm
 
