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KEMET B20L48B EMI Bead Core

The B-20 Series bead cores by KEMET are designed for use on round cables to reduce electromagnetic interference (EMI). Available in MnZn and NiZn options, these cores cater to specific frequency ranges and feature solid construction for reliable performance. The MnZn variant is effective in the kHz range for AM-band applications, while NiZn is suitable for MHz frequencies like FM-band, and can be customized with multiple turns to adjust impedance. Ideal for consumer electronics, they are RoHS compliant, compact, and suitable for high-frequency EMI suppression, ensuring minimal interference and optimal device operation.

Authorized Distributors
Source:Newark
Part No:B-20L-48B
Stock:29583
Inv Date:06-05-2026
Price: Unit price: $0.181
Buy/RFQ:
Source:DigiKey
Part No:B-20L-48B
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.29
Buy/RFQ:
Source:DigiKey
Part No:B-20L-48B
Stock:17261
Inv Date:06-05-2026
Price: Unit price: $0.126
Buy/RFQ:
Part No:B-20L-48B
Stock:26431
Inv Date:06-06-2026
Price: Unit price: $0.29
Buy/RFQ:
Part No:B-20L-48B
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.17
Buy/RFQ:

KEMET B20L48B EMI Bead Core Specifications:

  • Dimensions vary by model, typical length 25mm to 57mm, diameter ranges from 4.6mm to 57mm
  • Material: Nickel-Zinc (Ni-Zn) or Manganese-Zinc (Mn-Zn) ferrite
  • Frequency Range: Mn-Zn effective in kHz range, Ni-Zn in MHz range (FM band)
  • Impedance characteristics adjustable with turns, higher turns increase impedance and lower frequency range
  • RoHS Compliant, meets environmental standards
  • Solid construction for durability in electronic applications
  • Lead wire passes through the inner hole for multiple turns, outer windings do not count
  • Designed specifically for EMI suppression on round cable applications
  • Effective impedance with multiple turns, impedance vs. frequency plots available for reference
  • Temperature range suitable for typical electronic environments, specific ratings depend on model

Buy the KEMET Series B-20 EMI Bead Cores: B20L48B

Purchase the KEMET B-20L48B EMI bead core online today to enhance your electronic device's EMI filtering capabilities. Designed for round cable applications, this core features solid construction, RoHS compliance, and customizable impedance with multiple turns. Ideal for consumer electronics, it offers reliable performance across a broad frequency range, including AM and FM bands. Easy to install and durable, the B-20L48B ensures your devices operate with minimal interference, providing long-lasting, high-quality EMI suppression for optimal functionality and safety.

Get KEMET B-20L48B today—built for reliable EMI suppression on round cables with solid construction and customizable impedance.

Frequently Asked Questions

Where can I buy KEMET B20L48B?

You can click on the BUY or RFQ button to purchase B20L48B from an authorized KEMET distributor.

How do I troubleshoot issues or seek technical support for part B20L48B?

You can download the B20L48B datasheet or visit the KEMET website for support.

Who is the manufacturer of B20L48B?

KEMET

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