Economically Priced and Different Strengths Ferrite Magnet Bar
Ferrite Magnet Bar, Ferrite rods, bars, slugs, plates and tubes
They are primarily used as magnetic cores in radio antennas, chokes, inductors and filters. In radio antennas, ferrite rods are useful from VLF spectrum to VHF spectrum. The advantages are small size, high quality and compactness.
Ferrite rods and bars are available in standard lengths up to 12" long. These rods are available from 0.25" to 1" in diameter. They are available in materials from permeability of 7.5ui to 10, 000ui in both Nickel Zinc (NiZn) and Manganese Zinc (MnZn) compositions.
ANTENNA APPLICATION:
For antenna application, the design objective is to get high Q at the center of the design frequency of operations. Ferrite Rods are widely used as loop antennas such as broadcast-band receivers, low and medium frequency direction-finder receivers, airborne navigation receivers, AM, FM and VHF receivers.
The material 61 (ui
= 125) rods are mainly used in the 550 Khz to 1660 Khz commercial AM radio antennas.
Material 61 (ui
= 125) rods are also used by radio amateurs in the 2 MHz to 30 MHz range.
The material 33 (ui
= 800) rods are more suitable for lower frequencies in the 100 Khz to 1 Mhz or the low frequency (LF) ranges. The table above shows the recommended frequency ranges for different materials. As a general rule, the higher the operating frequency, the lower permeability of the rod cores are needed.
The material 77 (ui
= 2000) rods are most suitable for very low frequency (VLF) receiver application. Material 77 is typically used in receiver application below 10 Khz.
Toroids cannot be used as receivers as they have closed loops. Rods, bars and plates have open loops and are thus suitable as radio receivers. However, the efficiency of the rod as antennas degrades as the rod overall length versus the diameter ( l/d) increases. When the l/d goes over 35, the rod behaves more like an toroidal cores, and the close loop effects kicks in making these rods ineffective as an antenna. On the other hand, for very short rods where the l/d is less than 5, the effectiveness of the antenna is also diminished. Therefore, optimum l/d ratio is from 10 to 25 for a rod antenna.
Our Advantage:
1.Little volume and strong magnetic force
2.Excellent and reasonable Design as per customers' requirements
3.High quality, better and lower price
SDM Advantages•
Strategic
cooperation
with
China's
No.1
rare
earth
miner
CHINALCO,
which
enables
us
strong
and
safe backup
for
rare
earth
raw
materials
cost
stability,
3
x
-3%
annual
price
down
guaranteed.•
ISO/TS
16949,
VDA
6.3,
ISO9001,
ISO14001
certified
company,
RoHS,
REACH,
SGS,
FDA
complied
product.•
0
PPM
performance
for
General
Motor's
OEM
since
2010,
remarkable
customers
such
as
SIEMENS,
BMW,
REGAL
BELOIT,
NIDEC,
S&T
Motiv.•
Over
100
million
neodymium magnets
delivered
to
American, European, Asian
and
African countries.•
One
stop
service
from
R&D
to
mass
production.Quality
Assurance
• ISO9001, ISO14001, ISO/TS16949, TUV, SGS, RoHS.Customized
Neodymium
Magnets and Neodymium Magnetic Assemblies with fast
delivery time of 7-15 days.SDM Reliability
& Workshop
•
Demagnetization
Curves
& Outgoing
Inspection
Report
for each
shipment.Standard Packaging•
Vacuum
packaging for
all Neodymium magnets and Neodymium magetic assemblies.•
Shielding
box
and
wooden
box
to
protect
the Neodymium magnets
during shipping.Shipping Methods
•
Contract price
with
FedEx,
DHL,
UPS
and
TNT to minimum your shipping cost.•
Experienced shipping
forwarder for Ocean and Air shipments.Exhibitions•
CWIEME BERLIN
every year, Germany.•
HANNOVER MESSE
every year, Germany.•
CWIEME CHICAGO
every year, USA.You are more than welcome to visit us at above exhibitions every year, we look forward to a face to face meeting with you.Flexible PaymentWe
accept
T/T,
Paypal,
Western
Union,
ESCROW
and
L/C.Company InformationSDM Magnetics Co., Ltd. is a leading Chinese manufacturer of high performance permanent magnets and magnetic assemblies
with ISO9001:2008, ISO/TS 16949 and ISO14001 certificates.SDM serves a variety of markets from consumer
electronics, industrial automation, automotive, green energy, household appliances, medical, aerospace and telecommunications. SDM's magnets are used in motors, speakers, generators, sensors, compressors, MRI, magnetic chucks and separators etc.To meet the more and more demanding markets, SDM has been concentrating on manufacturing technologies for quality stability and cost reduction.Since 2010 the company has been supplying magnets to General Motors' OEM with 0 PPM.With Dysprosium infiltration technology, we are able to offer competitive prices for high grade Neodymium magnets. The company has also built up a strategic cooperation with China's No.1 rare earth miner CHINALCO, which gives us strong and safe backup for rare earth raw materials.SDM Magnetics now manufactures a comprehensive range of magnetic products including:·Neodymium
Magnet·Injection Molding Magnets·Samarium Cobalt·AlNiCo (Aluminum Nickel Cobalt)·Magnetic AssembliesOver the last ten years SDM export 85% of its products to American, European, Asian and African countries.With such wide range of magnetic material options, our professional technicians are available to help solve your magnetic needs and choose the most cost effective material for you.How to Find
us
?Our manufacturing plants are located in Tonglu, Hangzhou which are only one hour by car from Hangzhou airport or railway station.We are also only one hour by train from Shanghai or Ningbo, pickup and drop off at Hangzhou Air/Train stations are available if you are traveling to Hangzhou
from other cities in China.FAQ1:How long will you give me the reply?we will contact you in 12 hours as soon as we can.2:Could I get samples?Yes,we have materials in stock to help you to
get the samples
as soon as we can.3:How about the quality of the magnets?We have the certification of ISO,TS and ROSH,we could send the certification test of our company to you.4:How is the price?As we believe the quality is the most important,we will provide the
best quality magnet
we can with reasonable price.5:Could you provide me the shortest lead time?We have materials in our stock,if you really need,you can tell us and we will try our best to satisfy you.6:Could I visit your factory?Of course,if you need
we will help you to visit our factory.7:If I have paid,when will you help me to produce?When we have received the money in our account,we will give you the receipt and arrange to produce immediately.