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Ferrite Beads

Ferrite beads, also called ferrite block or ferrite choke, are choke that mitigates high-frequency electronic noise in an electronic circuit. The ferrite can be resistive over its intended frequency range and uses up the noise energy in the form of heat.

Ferrite Bead work

These are linked in a series with the power supply rail and usually linked with the capacitors to place on one of the two sides of the bead. This is why it forms a low pass filter network, mitigating the high-frequency power supply noise. 

When we compare single part numbers, families of these beads are more versatile, but they still require careful analysis. They may vary in materials and construction, so matching frequency performance with a specific manufacturer's specification is essential. In addition, if you're sourcing parts from more than one manufacturer for the same project, the parts should closely resemble one another in terms of size and shape. This is to avoid any potential differences in materials or construction problems.

Ferrite Bead Exists in Two Categories

  • High-Q beads are commonly used as a resonator but can't be used in power isolation circuits. 
  • Low-Q beads are absorptive beads and enable an efficient filter network because they are configured to absorb high-frequency noise currents and disperse them as heat.

How to Consider Choosing the Best Ferrite Bead?

  • This is important to consider that any voltage drops do not harm the intended supply rail to fall below the suggested operating way of using the electronic device.
  • It is inductive capability; they do not use it with high-Q decoupling capacitors. 
  • The condition for applying these beads correctly can vary in terms of effective and inexpensive ways of reducing high-frequency noise and switching transients.

Ferrite Bead Uses

When composing electronic equipment, monitoring or controlling the EMI electromagnetic interference in a device is important to protect devices from defects caused by high-frequency noise levels, such as

  • Depleting high-frequency EMI noise on any circuit design
  • Smart devices such as mobile phones
  • Computers and laptops
  • Audio players 
  • Television
  • In gaming system
  • DVDs

Types of Ferrite Bead

There are several types of beads, and their properties can vary. Most manufacturers provide a table of data for their products. The table includes their part number, the DC resistance, the maximum current rating, and the dimensional data. It is essential to check the specifications of a given pigtail before buying. For example, a pigtail ring can be a good choice if your dc-frequency application is only a few microwatts.

Because these beads are so small, they can be difficult to see, but they are important for certain applications. Some are essential for compliance with government regulators. If your product doesn't pass these tests, it's unlikely to get certified. But if it does, pigtail earrings are an excellent option for noise-canceling devices. They can even help protect your home from electric shock. This type of filter is particularly useful for home appliances.

Enrgtech is an electrical and electronic equipment supplier around the world. We are here to serve you with the best products. Place your order now.


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Enrgtech #
Manufacturer Part No
Name
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Price
Rating
Wurth Elektronik
Rohs Verified
742792604, Wurth Elektronik
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4000 +
£ 0.080
8000 +
£ 0.080
12000 +
£ 0.080
Rohs Verified
BLA2ABD102SN4D, Murata
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10 +
£ 0.19
Rohs Verified
BLM18AG102SN1D, Murata
7998 In Stock
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4000 +
£ 0.020
Rohs Verified
BLM18AG221SH1D, Murata
3398 In Stock
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200 +
£ 0.00
Rohs Verified
BLM18AG601SH1D, Murata
6598 In Stock
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200 +
£ 0.030
1000 +
£ 0.020
3000 +
£ 0.020
Rohs Verified
BLM18PG600SH1D, Murata
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200 +
£ 0.030
1000 +
£ 0.030
3000 +
£ 0.020
Rohs Verified
BLM21AG601SH1D, Murata
11248 In Stock
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50 +
£ 0.050
500 +
£ 0.040
1000 +
£ 0.040
Rohs Verified
BLM21BD471SN1D, Murata
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50 +
£ 0.060
Rohs Verified
BLM31PG391SN1L, Murata
14998 In Stock
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3000 +
£ 0.030
Wurth Elektronik
Rohs Verified
742792133, Wurth Elektronik
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3000 +
£ 0.12
Wurth Elektronik
Rohs Verified
74279279, Wurth Elektronik
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10000 +
£ 0.070
Wurth Elektronik
Rohs Verified
74279252, Wurth Elektronik
1998 In Stock
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1000 +
£ 0.17
3000 +
£ 0.16
Rohs Verified
BLM18GG471SN1D, Murata
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4000 +
£ 0.050
8000 +
£ 0.040
Rohs Verified
BLM15HD102SN1D, Murata
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10000 +
£ 0.020
Rohs Verified
BLA31AG102SN4D, Murata
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4000 +
£ 0.18
Rohs Verified
BLM18BA220SN1D, Murata
298 In Stock
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25 +
£ 0.020
Rohs Verified
BLM18BB151SN1D, Murata
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4000 +
£ 0.020
Fair-Rite
Rohs Verified
2961666671, Fair-Rite
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200 +
£ 0.23
Wurth Elektronik
Rohs Verified
742792097, Wurth Elektronik
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4000 +
£ 0.11
Rohs Verified
MH2029-600Y, Bourns
7998 In Stock
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4000 +
£ 0.020
Wurth Elektronik
Rohs Verified
782219301, Wurth Elektronik
14998 In Stock
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15000 +
£ 0.080
Rohs Verified
MH1005-471Y, Bourns
9998 In Stock
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10000 +
£ 0.010
20000 +
£ 0.010
Rohs Verified
MH1608-121T, Bourns
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4000 +
£ 0.020
8000 +
£ 0.010
Wurth Elektronik
Rohs Verified
782429261, Wurth Elektronik
9998 In Stock
Check Stock & Lead Times Packaging Options
100 +
£ 0.070
500 +
£ 0.070
1000 +
£ 0.070
Rohs Verified
BLM15GG471SN1D, Murata
Pre Order
Check Stock & Lead Times Packaging Options
10000 +
£ 0.090
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FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Ferrite Beads and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Ferrite Beads or any other product.
This depends on the Ferrite Beads individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Ferrite Beads and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Ferrite Beads.
Yes. We keep updating our stock frequently and if a product like Ferrite Beads is not in stock then we will let you know.