Trap Filters

Ceramic Trap Filters

ThumbnailDescription Type Frequency Range Murata Trap (P/N)

  • 1 (XT MB) Trap for TV/VCR Stage Dip 4.5~6.5 MHz TPS MB Trap for TV/VCR Stage (Compatible to Murata Trap Filter TPS MB Series) are band reject type used for video and sound IF attenuation. Token's Trap is employing piezoelectric technology's mechanical resonance, it is almost unaffected by the surrounding circuits, and its characteristics do not deviate when it is implanted in the printed circuit and no adjustment is required.
    Download XT MB PDF (317KB)

  • 2 (XT MW) Ceramic Double Trap Dip 4.5~6.5 MHz TPWA XT MW Series (Compatible to Murata Trap Filter TPWA Series) consist of 2 wafers with 2 trap frequencies. Recommended for Multi standard set. Features with good performance of attenuation and space saving with 3-terminal type. Sound trap for TV set is one of the famous example of B. E. F. In TV set, video signal is used in picture amplitude circuit after video signal detection block, ceramic resonator is insert here and trap circuit is formed in order to eliminate sound signal involved in video signal.
    Download XT MW PDF (293KB)

  • 3 (XT MT) Ceramic Triple Trap Dip 4.5~6.5 MHz TPT XT MT Series (Compatible to Murata Trap Filter TPT Series ) consist of 3 wafers with 3 trap frequencies. Recommended for Multi standard sets. The characteristic of a three-terminal ceramic trap equals two two-terminal ceramic trap. Three-terminal ceramic trap has a monolith structure formed from 2 ceramic resonators.
    Download XT MT PDF (293KB)

  • 4 (XT MJ) Trap for Chrominance Carrier Dip 3.58~6.5 MHz TPS MJ Trap for Chrominance Carrier (Compatible to Murata Trap Filter TPS MJ Series) are band reject device used for video and sound IF attenuation. Utilize Token special piezoelectric materials, Token's trap has a high Q compared with IFT and a high selectivity is obtained. It also has a remarkable frequency temperature coefficient, high selectivity and high stability.
    Download XT MJ PDF (291KB)

Trap Filter Design Notes

What is "Trap"

  • Band Eliminate Filter (B. E. F.) which blocks or attenuates particular frequency is called trap.
  • Contrariwise, ceramic filter passes only particular frequency. Sound trap for TV set is one of the famous example of B. E. F.
  • In TV set, video signal is used in picture amplitude circuit after video signal detection block, ceramic resonator is insert here and trap circuit is formed in order to eliminate sound signal involved in video signal.

Type of "Ceramic Trap"

Token's Ceramic trap is divided into 2 types:

  1. Two-Terminal Ceramic Trap Filter:
    Two-terminal ceramic Trap is used in Black and White TV sets since the number of peripheral components can be reduced, though its attenuation isn't so much.

  2. Three-Terminal Ceramic Trap Filter:
    Three-terminal ceramic trap has a monolith structure formed from 2 ceramic resonators. The characteristic of a three-terminal ceramic trap equals two two-terminal ceramic trap. The three-terminal ceramic trap needs additional coil, it is used in Color TV set and VCR because to its high attenuation.

Advantage of Token Piezoelectric Trap Filters

Token Electronics had been able to develop specialized piezo materials which when combined with an advance design have resulted in a complete line of practical, inexpensive piezo devices for entertainment and communications applications.

Token reliably deliver high-quality components according to the each customer special needs with respect to performance, costs, and technology modifications.

For marketing discontinuations or sourcing activities concerning Piezoelectric "Trap" products, you are encouraged to contact our Sales Department so the request can be properly directed within Token.

Token's Trap Product Catalogue in PDF file (424KB) is available to download.