Knowles Precision Devices Datasheets for EMI Filters and RFI Filters
Electromagnetic (EMI) filters and radio frequency interference (RFI) filters purify signals of unwanted noise by attenuating the high-frequency RFI (typically 150kHz and up) and passing the low frequency EMI.
EMI Filters and RFI Filters: Learn more
| Product Name | Notes |
|---|---|
| Construction The resin sealed panel mount filter ranges feature silver plated brass bodies and copper alloy pins. In all cases the capacitive element is a low ESR high performance discoidal... | |
| SFAA threaded resin filled panel mount EMI Filters The SFAA range of feed-through EMI filters combines a 4-40 UNC thread with a 4.0mm (0.157") hexagonal head. Available in 'C' configuration,... | |
| SFAB threaded resin filled panel mount EMI Filters The SFAB range of feed-through EMI filters combines a 6-32 UNC thread with a 4.0mm (0.157") hexagonal head, available with or without... | |
| SFAJ range of threaded panel mount EMI Filters The SFAJ range of feed-through EMI filters combines an M3 thread with a 4.0mm (0.157") hexagonal head, available with or without nuts... | |
| SFAK range of threaded panel mount EMI Filters The SFAK range of feed-through EMI filters combines an M3.5 thread with a 4.0mm (0.157") hexagonal head, available with or without nuts... | |
| SFBC range of threaded panel mount EMI Filters The SFBC range of feed-through EMI filters combines an 8-32 UNC thread with a 4.75mm (0.187") hexagonal head, available with or without... | |
| SFBD range of threaded panel mount EMI Filters The SFBD range of feed-through EMI filters combines a 12-32 UNEF thread with a 4.75mm (0.187") hexagonal head, available with or without... | |
| SFBL range of threaded panel mount EMI Filters The SFBL range of feed-through EMI filters combines an M4 thread with a 4.75mm (0.187") hexagonal head, available with or without nuts... | |
| SFBM range of threaded panel mount EMI filters The SFBM range of feed-through EMI filters combines an M5 thread with a 4.75mm (0.187") hexagonal head, available with or without nuts... | |
| SFCD range of threaded panel mount EMI Filters The SFCD range of feed-through EMI filters combines a 12-32 UNEF thread with a 6.35mm (0.250") hexagonal head, available with or without... | |
| SFCM range of threaded panel mount EMI Filters The SFCM range of feed-through EMI filters combines an M5 thread with a 6.35mm (0.250") hexagonal head, available with or without nuts... | |
| SFDP range of threaded panel mount EMI Filters The SFDP range of feed-through EMI filters provides high current capability and impressive insertion loss over a wide frequency band, thanks to... | |
| SFJG range of threaded panel mount EMI Filters The SFJG range of feed-through EMI filters provides impressive insertion loss over a wide frequency band, thanks to the high capacitance values... | |
| SFJN range of threaded panel mount EMI Filters The SFJN range of feed-through EMI filters provides impressive insertion loss over a wide frequency band, thanks to the high capacitance values... | |
| SFKB range of threaded panel mount EMI Filters The SFKB range of feed-through EMI filters combines a 6-32 UNC thread with a 4.4mm (0.173") round body to provide a miniature... | |
| SFKK range of threaded panel mount EMI Filters The SFKK range of feed-through EMI filters combines an M3.5 thread with a 4.4mm (0.173") round body to provide a miniature screw-in... | |
| SFLM range of threaded panel mount EMI Filters The SFLM range of feed-through EMI filters combines an M5 thread with a 6.0mm (0.236") round body to provide a miniature screw-in... | |
| SFSR Range of solder-in panel mount EMI Filters The SFSR feed-through EMI filters are designed for soldering direct to a chassis or panel, and are suitable for hole diameters of... | |
| SFSS Range of solder-in panel mount EMI Filters The SFSS range consists of a discoidal capacitor soldered to a feed-through pin, offering a low-cost, low-profile panel mount filter. Available in... | |
| SFST Range of solder-in panel mount EMI Filters The SFST feed-through EMI filters are designed for soldering direct to a chassis or panel, and are suitable for hole diameters of... | |
| SFSU Range of Solder-in panel mount EMI Filters The SFSU feed-through EMI filters are designed for soldering direct to a chassis or panel, and are suitable for hole diameters of... | |
| SFSW Range of solder-in hermetic panel mount EMI Filters The SFSW feed-through EMI filters are designed for soldering direct to a chassis or panel, and are suitable for hole diameters... | |
| SFTM range of threaded panel mount EMI Filters The SFTM range of feed-through EMI filters is designed with an exceptionally short body, for applications where minimal protrusion from the panel... | |
| SFUM range of threaded panel mount EMI Filters The SFUM range of feed-through EMI filters is designed with an exceptionally short body, for applications where minimal protrusion from the panel... | |
| X2Y Panel Mount Feed-through (SFJGB Range) The Syfer balanced line filter is a 2-pin panel mounting device suitable for balanced lines and twisted pairs. It is ideal for passing lines... | |
| Benefits of Knowles Precision Devices Panel Mount EMI Filters Use of Stable X7R and C0G/NP0 ceramics - no Z5U/Y5V High capacitance values, high voltage High frequency performance to greater than... | |
| Discoidal capacitors are at the heart of many EMI filters. More robust and reliable than tubular capacitors, they offer higher capacitance options, with values up to several microfarads. In addition... | |
| E01 / E07 / E17 ‘C’ Filter EMI Chips Also known as 3-terminal chips, these use conventional MLCC manufacturing techniques to form a filter which is short circuit end-to-end and... | |
| Surface mount ‘Pi’/’C’ Filters ‘Pi’ filters incorporate 2 capacitors and an inductor together to make a multi-element filter, giving sharper cut-off and better low frequency performance than straight ‘C’ filters. | |
| The Knowles Syfer Brand E01 range of feedthrough MLCC chip ‘C’ filters are 3 terminal chip devices designed to offer reduced inductance compared to conventional MLCCs when used in signal... | |
| The Knowles Syfer Brand E07 range of feedthrough MLCC chip ‘C’ filters are 3 terminal chip devices designed to offer reduced inductance compared to conventional MLCCs when used in signal... | |
| The Knowles Syfer Brand E17 range of feedthrough MLCC chip ‘C’ filters are 3 terminal chip devices designed to offer reduced inductance compared to conventional MLCCs when used in signal... | |
| The Knowles Syfer Brand X2Y Integrated Passive Component is a 3 terminal EMI chip device. When used in balanced line applications, the revolutionary design provides simultaneous line-to-line and line-to-ground filtering,... | |
| The multilayer planar array is an application specific multi capacitor array designed for use in multi-way EMI filter circuits. Derived from discoidal capacitor theory, it provides capacitance between the outside... | |
| The SBSG range has a 5A current rating for the Pi type, and 10A rating for the C type. Suitable for pick-and-place, these miniature surface mount filters offer assembly savings... | |
| The SBSM range of surface mount EMI filters has been designed for use on pcbs, and is suitable for both signal and power lines. Capacitance values up to 470nF are... | |
| With a size of only 1206, the SBSP range of surface mount pi-filters offers an unbeatable combination of size and performance. With a 1A current rating, they are available with... | |
| X2Y Filters X2Y filters are manufactured in the same way as conventional MLCC’s but have a special internal architecture that results in ultra-low ESL (Equivalent Series Inductance) through opposing current... |