SOONTAI - CATV Triple Band Pass Filter (CE Approved / High Q Series)

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Triple Band Pass Filter

Features

* Class A RFI Shielding

* Support DOCSIS 3.1

* Low Loss

* High Rejection

* Excellent Return Loss

* Flat Passband

* High Stability

* Excellent Mechanical Structure

* Precision Connector Thread

* Exquisite Plating Quality

* Good Weather Resistance

* Waterproof (alternative)

* Patented Housing

Introduction

The TBF (triple band pass filter) contains one or two complete pass band, one low pass band or one high pass band.
Please refer to the graph below.

A common application is to pass two bands of the forward path signals/ channels and return path band.
But it also has other combine of pass bands according to customer's system needs.

The circuit architecture of this triple band pass filter was invented by Soontai.

We can design filters with more than 3 passbands, and even more, and according to your specifications.

Soontai's triple band pass filters provide many features (see below).

1. Wide and deep reject band, provides excellent rejection capabilities to clear undesired signal,
rejection better than 50dB.

2. Lowest insertion loss, signal-through-loss reduced to a minimum.

3. Excellent return loss, good impedance match reduces signal loss to keep the signal clean. (see figure)

4. Dual layer brass tubes provide the best radio frequency interference (RFI) / electromagnetic interference (EMI) protection.

For more filter products, please see our filter category.

To learn more filter types please see the filter profile technical notes in our Tech Support.

Custom filters or more details on inquires, please refer to Custom Filters.

**Items**
Model	1st Pass Band	2nd Pass Band	3rd Pass Band	1st Reject Band	2nd Reject Band
TBF-5-42/ 88-120/515-1000	5-42 MHz	88-120 MHz	515-1000 MHz	55-76 MHz	136-475 MHz
TBF-5-42/ 400-450/550-1000	5-42 MHz	400-450 MHz	550-1000 MHz	55-350 MHz	480-510 MHz
TBF-10-90/ 499-519/625-645	10-90 MHz	499-519 MHz	625-645 MHz	95-469 MHz	564-589 MHz
TBF-30-117/ 170-272/742-1000	30-117 MHz	170-272 MHz	742-1000 MHz	0.3-22 MHz	128-163 MHz
TBF-291-355/ 498-562/762-1000	291-355 MHz	498-562 MHz	762-1000 MHz	5-283 MHz	364-480 MHz

**Electrical Curve** ( TBF-5-42/88-120/510-1000 )
Insertion Loss \| Return Loss SPAN 1000MHz Fig 1	Insertion Loss \| Return Loss SPAN 150MHz Fig 2

**General Specifications**
Item	TBF - 5-42 / 88-120 / 510-1000
Impedance	75 ohm
Frequency Range	5 - 1000MHz
1st Pass Band	5 - 42 MHz
2nd Pass Band	88 - 120 MHz
3rd Pass Band	510 - 1000 MHz
1st Reject Band	55 - 76 MHz
2nd Reject Band	136 - 475 MHz
1st Pass Band Insertion Loss	0.5dB (typ) / 1.6dB (max)
2nd Pass Band Insertion Loss	1.0dB (typ) / 2.5dB (max)
3rd Pass Band Insertion Loss	1.0dB (typ) / 3.0dB (max)
1st, 2nd Pass Band Return Loss	20dB (typ) / 16dB (min)
3rd Pass Band Return Loss	18dB (typ) / 14dB (min)
Reject Band Rejection	50dB (min)
Dimensions (incl. M/F connectors)	21(¢) x 91(L) mm
Net Weight	72g

* Specifications may be change depending on the model or customer's requirement.