Sine Wave Filters

Sine wave filters (also known as sinusoidal filters) are passive components used to provide electrical circuits with the correct frequencies to ensure optimal performance. They are low pass devices which means they let low-frequency signals pass but block or impede high frequency signals.

Circuits requiring longer cables usually have sinusoidal filters to convert rectangular pulse width modulation (PWM) signals into smooth wave voltage. This will prevent premature circuit damage and prolong the lifespan of AC motor drives by reducing stress on the motor's insulation.

What are sinusoidal filters used for?

Sinusoidal filters protect motor windings and bearings from damage due to voltage spikes, cable stripping, current loss and overheating. These filters are used in equipment such as pumps, ventilators, conveyors, compressors, elevators and cranes.

Types of sinusoidal filters

Enclosed or open panel versions exist:

  • Enclosed filters come in pre-packed boxes and can be installed onsite for immediate use without any adjustments, mounting or wiring needed.
  • Open panel filters are assembled leaving the back panel accessible for the user to mount and wire as preferred.

What are saw filters used for?

A Surface Acoustic Wave (SAW) filter is a filter with an electrical input signal that is converted to an acoustic wave by a transducer. The transducer has a series of metal electrodes which are used to create and receive the waves, so that an electrical signal is converted to an acoustic wave and then back to an electrical signal. Each filter is limited to a frequency between 50MHz and 3GHz. SAW filters are commonly used in many different industries including chemical, optical and thermal. Their ability to operate at a wide range of temperatures, generally between -25°C and 85°C, makes them appropriate for a variety of applications. They are commonly used in the digital industry in items such as mobile phones to make touchscreen displays.

The most common types of SAW filters are known as bandpass filters. These are generally small and offer a range of advantages, such as the ability to conduct during a relatively low-frequency operation.


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Filters

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Description Price Maximum Voltage Rating Series Maximum Current Rating Switching Frequency Dimensions Depth Height Length Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 739-6412
Mfr. Part No.LR3 40-4/2
BrandBlock
kr 435,29
Each
Units
690 V ac LR3 2A - 78 x 56 x 100mm 56mm 100mm 78mm +40°C -10°C
RS Stock No. 883-8216
Mfr. Part No.FN5040-8-82
BrandSchaffner
kr 6 340,74
Each
Units
500 V ac FN 5040 8A 4kHz 155 x 84 x 212mm 84mm 212mm 155mm +70°C -25°C
RS Stock No. 739-6373
Mfr. Part No.MR3 400/2,5
BrandBlock
kr 456,16
Each
Units
690 V ac MR3 2.5A 8kHz 78 x 63 x 100mm 63mm 100mm 78mm +40°C -10°C
RS Stock No. 772-8979
Mfr. Part No.SF946A
kr 27,65
Each
Units
- SF - - 3.8 x 3.8 x 1.33mm 3.8mm 1.33mm 3.8mm - -
RS Stock No. 739-6446
Mfr. Part No.LR3 40-4/30
BrandBlock
kr 1 752,69
Each
Units
690 V ac LR3 30A - 155 x 110 x 177mm 110mm 177mm 155mm +40°C -10°C
RS Stock No. 702-4056
Mfr. Part No.B84143V0011R127
BrandEPCOS
kr 6 519,80
Each
Units
520 V ac B84143V 11A 8kHz 335 x 120 x 160mm 120mm 160mm 335mm +60°C +40°C
RS Stock No. 218-2912
Mfr. Part No.6SL3203-0CE23-8AA0
BrandSiemens
kr 2 218,09
Each
Units
480 V SINAMICS 47A - 220 x 190 x 91mm - - - - -
RS Stock No. 213-1163
Mfr. Part No.6SL3203-0CE21-8AA0
BrandSiemens
kr 1 682,57
Each
Units
480 V SINAMICS 22.3A - 125 x 91 x 145mm 91mm 145mm 125mm - -
RS Stock No. 739-6440
Mfr. Part No.LR3 40-4/35
BrandBlock
kr 1 868,36
Each
Units
690 V ac LR3 35A - 155 x 110 x 177mm 110mm 177mm 155mm +40°C -10°C
RS Stock No. 739-6395
Mfr. Part No.MR3 400/18
BrandBlock
kr 1 153,56
Each
Units
690 V ac MR3 18A 8kHz 120 x 140 x 140mm 140mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6468
Mfr. Part No.LR3 40-4/70
BrandBlock
kr 3 128,03
Each
Units
690 V ac LR3 70A - 210 x 117 x 240mm 117mm 240mm 210mm +40°C -10°C
RS Stock No. 739-6428
Mfr. Part No.LR3 40-4/8
BrandBlock
kr 806,77
Each
Units
690 V ac LR3 8A - 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6409
Mfr. Part No.MR3 400/30
BrandBlock
kr 1 662,45
Each
Units
690 V ac MR3 30A 8kHz 155 x 95 x 162mm 95mm 162mm 155mm +40°C -10°C
RS Stock No. 739-6389
Mfr. Part No.MR3 400/8
BrandBlock
kr 658,59
Each
Units
690 V ac MR3 8A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 866-1842
Mfr. Part No.3AFS400-080
BrandFUSS-EMV
kr 24 586,98
Each
Units
3 x 500 V ac 3AFS400 80A - 360 x 320 x 330mm 320mm 330mm 360mm +60°C +40°C
RS Stock No. 866-1830
Mfr. Part No.3AFS400-035 IG
BrandFUSS-EMV
kr 9 891,02
Each
Units
3 x 500 V ac 3AFS400 35A - 270 x 135 x 270mm 135mm 270mm 270mm +60°C +40°C
RS Stock No. 739-6459
Mfr. Part No.LR3 40-4/40
BrandBlock
kr 1 853,57
Each
Units
690 V ac LR3 40A - 185 x 102 x 210mm 102mm 210mm 185mm +40°C -10°C
RS Stock No. 866-1849
Mfr. Part No.3AFS400-063
BrandFUSS-EMV
kr 12 580,17
Each
Units
3 x 500 V ac 3AFS400 63A - 300 x 240 x 340mm 240mm 340mm 300mm +60°C +40°C
RS Stock No. 739-6392
Mfr. Part No.MR3 400/13
BrandBlock
kr 921,89
Each
Units
690 V ac MR3 13A 8kHz 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6370
Mfr. Part No.SFB 400/37
BrandBlock
kr 6 389,56
Each
Units
520 V ac SFB 37A 8kHz 210 x 240 x 280mm 240mm 280mm 210mm +40°C -