SOONTAI - CATV Tier Trap Filter (CE Approved / High Q Series)

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- a trusted partner, provide the better choice for you.

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Tier Trap 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

Tier trap filters have two passbands, one on each side of the reject band. They are used for filtering out some channels in CATV reception systems or for application in other communication systems.

Soontai's tier trap filters have many features (see below).

1. Sharp and deep reject band, provides excellent rejection capabilities to clear undesired signal.

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 electromagnetic interference(EMI) protection.

The table below shows popular TTF series filter models.
We can design other models according to your specifications.

For more filter information 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	Stop Band	Model	Stop Band
TTF - 20-42	20 - 42 MHz	TTF - 265-279	265 - 279 MHz
TTF - 88-108	88 - 108 MHz	TTF - 374-390	374 - 390 MHz
TTF - 112-126	112 - 126 MHz	TTF - 415-481	415 - 481 MHz
TTF - 118-174	118 - 174 MHz	TTF - 454-470	454 - 470 MHz
TTF - 195-209	195 - 209 MHz	TTF - 526-544	526 - 544 MHz

**Electrical Curve** ( TTF-118-174 )
Rejection over 50dB SPAN 1000MHz Fig 1	Insertion Loss \| Return Loss SPAN 1000MHz Fig 2

**General Specifications**
Item	TTF - 118-174
Impedance	75 ohm
Frequency Range	5 - 1000MHz
Insertion Loss (5-102MHz)	0.5dB (typ) / 2.5dB (max)
Insertion Loss (198-1000MHz)	0.5dB (typ) / 2.5dB (max)
Return Loss	20dB (typ) / 12dB (min)
Rejection (118-174MHz)	50dB (min)
Dimensions (incl. M/F connectors)	21(¢) x 74(L) mm
Net Weight	52g

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