4th Order Connector and Surface Mount Bessel Lowpass Filters
RLC Electronics now offers 4th Order Surface Mount Bessel Lowpass Filters with the same excellent frequency response as our existing LB filters in a convenient surface mount package. These filters should be regarded as compromise designs, for pulsed systems where truthful reproduction of the pulse shape is important. Primarily used on lightwave receivers to reduce the impact of higher order distortion. Units capable of withstanding automated soldering temperatures can also be supplied.
Specifications
LBS–1–2 (Surface-Mount)
LB-1
Model No |
-3 dB Cut-off Frequency (MHz) |
F/Fc |
Attenuation |
Attenuation Accuracy (dB) |
LBS OR LB |
10 to 2100 |
.2 |
-.01 |
+/-.2 |
4 |
-0.4 |
+/-.2 |
||
.6 |
-1.0 |
+/-.2 |
||
.8 |
-1.9 |
+/-.2 |
||
1 |
-3.0 |
+/-.2 |
||
1.2 |
-4.5 |
+/-.48 |
||
1.33 |
-5.7 |
+/-.59 |
||
1.4 |
-6.4 |
+/-.64 |
||
1.6 |
-8.5 |
+/-.74 |
||
1.8 |
-10.9 |
+/-.89 |
||
2.0 |
-13.4 |
+/-1.0 |
||
2.67 |
-21.5 |
N/A |
Power Rating: 2 watts average Impedance: 50 ohms Connector Type: SMT or SMA |
Temperature: -55C to +85C Environmental: MIL-E-5400, Class 1A Except operating temperature |
To designate the filter desired use:
1: 3dB cut-off frequency in MHz |
2: PB, TP, CB, T8S, C1, C2 (see this page for dimensions) configuration |
Example: LBS-1500-PB is a 4th order lowpass with a 3dB point of 1500 MHz and
1 dB point @ .6 Fc = 900 MHz in a standard “PB” package
LB-466 is a 4th order lowpass filter with a 3dB point of 466 MHz and 1dB point @
.6xfc(279.6 MHz).
Outline Drawing
