LC filters for EMI suppression

17 May 2017 Passive Components

The MEM1005PP251T is a new LC filter for EMI suppression, made by TDK.

With dimensions of just 1,0 x 0,5 x 0,35 mm it is ideally suited for use in smartphones and base stations.

The usual method for suppressing interference in the communication frequency bands of smartphones and other devices is to use capacitors or inductors, or a combination of these components. In contrast to discrete solutions, the MEM1005PP251T combines two capacitors and an inductance in the form of a Pi filter in a single component. As a result, 61% less space is required and there is a reduction in the overall number of components.

Thanks to the special design, the component offers very low-loss operation and a DC resistance of just 0,8 Ω, which represents a reduction of 69% when compared to previous products. The new filter offers a rated current of 350 mA, which is 3,5 times more than the MEM1608P series, and is designed for a very wide temperature range from -55°C to +125°C.

The attenuation in the frequency range from 700 MHz to 3 GHz, which is used by mobile communications, is in excess of 30 dB. This means that interference is well suppressed and reception sensitivity increases.

For more information contact Pieter Engelbrecht, Avnet South Africa, +27 (0)11 319 8600, [email protected], www.avnet.co.za

Further reading:

3,75 GHz RF inductor
RF Design Passive Components
The ceramic chip wire wound inductor from Coilcraft features a DC resistance of 1 O, a DC current of 175 mA, and a self-resonant frequency of 3,75 GHz.

Read more...

---

Upgraded power inductor series
iCorp Technologies Passive Components
Sunlord’s multiphase co-fired power inductor HTF-MP series has upgraded the single-phase HTF-H products in terms of integrated applications.

Read more...

---

Advanced high-voltage capacitors
RS South Africa Passive Components
These new capacitor families from Panasonic are designed for surface-mount and radial lead applications, offering remarkable performance improvements that meet the evolving needs of industrial applications.

Read more...

---

Chip capacitors for high-voltage applications
RS South Africa Passive Components
TDK Corporation has expanded its line of CeraLink capacitor series B58043 in the EIA 2220 footprint by adding two new 900 V types.

Read more...

---

Moulded inductors
Future Electronics Passive Components
Abracon’s mini-moulded inductors bring all the advantages of their larger counterparts, including superior EMI shielding, high power density, and low core losses, despite their compact size.

Read more...

---

New components from KEMET available from TME
Passive Components
Available from KEMET, one of the largest suppliers of passive components, these new components consist of toroidal inductors (ferrites) and capacitors which boast high current performance.

Read more...

---

Miniature reed relay with 80 W rating
Passive Components
Pickering Electronics has introduced its latest high-power reed relay, Series 44, featuring an 80 W power rating, while stacking on a compact 0,25-inch pitch.

Read more...

---

The future of on-board charging
Future Electronics Passive Components
Engineered to elevate charging performance, the selection of Vishay capacitors, resistors, and other passives redefine reliability and efficiency in on-board charging technology.

Read more...

---

Cooling on a chip
Passive Components
This all-silicon, solid-state active cooling chip by xMEMS is designed for thermal management applications for ultra-mobile devices and next-gen AI solutions.

Read more...

---

First 100 µF MLCC in 0603 packaging
RS South Africa Passive Components
Murata is expanding its range of multilayer ceramic capacitors (MLCC) with the groundbreaking new GRM188C80E107M and GRM188R60E107M.

Read more...

---