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Triple Band Pass Filter
* CE Approved, Class A RFI Shielding

* SMD, High Stability

* High Rejection

* Low Loss

* Excellent Return Loss

* Waterproof (alternative)

* Patented Housing

* Suitable for CATV and other
   communication systems
      Also Recommended

WF : Window Filter TBF : Triple Band Pass Filter

More ... : Filter Series

A TBF (Triple Band Pass Filter) contains one complete pass band, one low pass band and one high pass band. Please refer to the graph below.

Triple Band pass filters are used in many communication applications such as CATV or cable network systems to pass three desired bands.

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

1. High rejection, better than 50dB. (see figure)

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 copper tubes provide the best radio frequency interference (RFI) /
    electromagnetic interference (EMI) protection.

We can design other models according to your specifications.

For more filter infomation please see the filter profile technical notes in our Tech Support.
Custom filters or more details on inquires, please refer to Custom Filters.

Model 1st
Pass Band
Pass Band
Pass Band
Reject Band
Reject Band
5-42 MHz 88-120 MHz 515-1000 MHz 55-76 MHz 136-475 MHz
  Electrical Curve ( TBF-5-42/88-120/510-1000 )

Insertion Loss  |  Return Loss
SPAN 1000MHz
Fig 1

Insertion Loss  |  Return Loss
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 according to customer's requirements.



No.43, Huangong Rd., Yongkang Dist., Tainan City 710, Taiwan
TEL: 886-6-2016969   FAX: 886-6-2013939   E-mail: soontai@soontai.com