Saw Filters (TSF)

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SAW Surface Acoustic Wave Filters (TSF) Introduction

Token Saw Filters (TSF) Make New Waves in The Wireless World.

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  • Saw Filters - TSF Series
  • Saw Filters - TSF Series
  • Saw Filters - TSF Series

With the growth of wireless communications, surface acoustic wave technology filters have become a critical component for electronics manufacturers. Token develops and manufactures a complete line of our frequency control products utilizing industry standard packages in both Surface Mount and Through Hole designs.

Token provides innovative low-cost, space-saving and energy-efficient designs with high volume off-shore manufacturing, leading technology and superior engineering resources in design and process manufacturing.

Token's Saw filters support all the major standards: EGSM, DCS, AMPS/CDMA/GSM850, PCS, WCDMA, WLAN, GPS, within the standard range of devices, offering a cost-effective solution for all applications.

A new compact range of Saw RF filters uses chip-scale packaging specifically to address the demanding miniaturisation and performance requirements for new generations of mobile phones. Key features of the range include compatibility with lead-free (high-temperature) solder reflow while achieving high reliability against moisture, temperature, mechanical vibrations and shocks.

In modern remote control applications, Saw resonators and front end filters are key components which transmit in the USA typically at 315 or 915 MHz and in Europe at 433.92 MHz or 868-870 MHz. These remote controls are used in systems for Remote Keyless Entry (RKE, wireless operation of a car's central locking system), security alarms and garage door openers, electronic toll, RFID, short range data transmission, wireless Tire Pressure Monitoring (TPMS).

Token Saw components provide stable frequencies for the RF carrier signal to transmit data over a range for the local oscillators of superhet receivers. The front-end filter in the receiver eliminates interference from the incoming RF signal, thus increasing selectivity and sensitivity in short-range devices.

Our experienced engineering team can support your Saw application from the initial design through production. Custom designs are available utilizing high technology mask designs, wafer fabrication, assembly and complete reliability testing.

For marketing discontinuations or second sourcing activities concerning RF Filter and IF Filter products, you are encouraged to contact our Sales Department so the request can be properly directed within Token.

Download PDF file Saw Filters (TSF).

Front End Filter Typical Specification (TSF)

Part Number Center Freq.
(MHz)
IL(dB) 3dB BW(MHz) Package
SMD Type DIP Type
TSF295D00-D1 295 3.0 0.6   TO-39
TSF302D00A-S4 302 2.5 0.75 QCC8C  
TSF302D00B-S7 302 2.5 0.75 DCC6  
TSF303D825A-D1 303.825 3.0 0.6   TO-39
TSF303D825B-S4 303.825 3.0 0.6 QCC8C  
TSF303D875A-D1 303.875 3.0 0.6   TO-39
TSF303D875B-S4 303.875 3.0 0.6 QCC8C  
TSF310D00-S4 310 3.0 0.8 QCC8C  
TSF315D00A-D1 315 3.0 0.6   TO-39
TSF315D00B-D2 315 3.0 0.6   F-11
TSF315D00C-S4 315 3.0 0.6 QCC8C  
TSF315D00D-S4 315 2.5 1.3 QCC8C  
TSF315D00E-S6 315 2.5 1.3 QCC8B  
TSF315D50-D1 315.5 3.0 0.6   TO-39
TSF318D00-D1 318 3.0 0.6   TO-39
TSF319D50-D1 319.5 2.5 0.7   TO-39
TSF345D00A-S6 345 2.5 4.5 QCC8B  
TSF345D00B-S4 345 3.0 0.9 QCC8C  
TSF372D50-D1 372.5 3.0 0.6   TO-39
TSF390D00-S4 390 3.0 1.0 QCC8C  
TSF391D25-D1 391.25 2.5 0.6   TO-39
TSF395D00-S4 395 3.0 1.0 QCC8C  
TSF401D65-S4 401.65 3.0 0.6 QCC8C  
TSF401D90-D1 401.9 3.0 0.6   TO-39
TSF418D00A-D1 418 3.0 0.6   TO-39
TSF418D00B-S4 418 3.0 0.6 QCC8C  
TSF419D20-S4 419.2 3.0 1.2 QCC8C  
TSF430D50A-D1 430.5 3.0 0.6   TO-39
TSF430D50B-D2 430.5 3.0 0.6   F-11
TSF431D50A-D2 431.5 2.5 0.58   F-11
TSF431D50B-S4 431.5 2.5 0.58 QCC8C  
TSF433D42A-S4 433.42 3.5 0.6 QCC8C  
TSF433D42B-S7 433.42 3.0 0.9 DCC6  
TSF433D92A-D1 433.92 3.0 0.6   TO-39
TSF433D92B-D1 433.92 2.0 0.73   TO-39
TSF433D92C-D2 433.92 3.0 0.6   F-11
TSF433D92D-S4 433.92 3.0 0.6 QCC8C  
TSF433D92E-S4 433.92 2.0 0.73 QCC8C  
TSF433D92F-S4 433.92 2.5 0.6 QCC8C  
TSF433D92G-S4 433.92 2.5 0.95 QCC8C  
TSF433D92H-S4 433.92 2.2 0.7 QCC8C  
TSF433D92I-S6 433.92 2.8 6.0 QCC8B  
TSF433D92J-S6 433.92 2.3 0.56 QCC8B  
TSF433D92K-S6 433.92 2.3 0.56 QCC8B  
TSF433D92L-S9 433.92 2.8 1.0 DCC6C  
TSF433D92M-S7 433.92 2.3 0.56 DCC6  
TSF434D42A-D1 434.42 3.0 0.7   TO-39
TSF434D42B-S4 434.42 3.0 0.6 QCC8C  
TSF439D25-D1 439.25 3.0 0.6   TO-39
TSF451D25-D1 451.25 2.5 0.48   TO-39
TSF463D912-S4 463.912 2.5 1.2 QCC8C  
TSF499D25-D1 499.25 3.0 0.54   TO-39
TSF801D125A-S7 801.125 5.8 0.56 DCC6  
TSF801D125B-S6 801.125 5.0 0.58 QCC8B  
TSF859D15-D2 859.15 4.0 1.0   F-11
TSF868D00-S4 868 3.5 1.2 QCC8C  
TSF868D30-S4 868.3 4.0 1.2 QCC8C  
TSF868D35A-D2 868.35 4.0 1.2   F-11
TSF868D35B-S4 868.35 4.0 1.2 QCC8C  
TSF868D35C-S6 868.35 3.5 1.8 QCC8B  
TSF868D69-S4 868.69 3.8 1.9 QCC8C  
TSF868D95-S4 868.95 3.5 1.2 QCC8C  
TSF869D69-S4 869.69 3.8 1.8 QCC8C  
TSF902D30-S4 902.3 3.5 1.2 QCC8C  
TSF908D00-S6 908 3.0 2.0 QCC8B  
TSF914D50-D2 914.5 3.8 1.2   F-11
TSF915D00A-D1 915 3.5 1.2   TO-39
TSF915D00B-S4 915 4.0 1.2 QCC8C  
TSF915D00C-S7 915 3.8 1.8 DCC6  
TSF916D50A-D1 916.5 4.0 1.2   TO-39
TSF916D50B-D2 916.5 3.5 1.2   F-11
TSF916D50C-S4 916.5 4.0 1.2 QCC8C  
TSF916D50E-S4 916.5 4.0 1.2 QCC8C  
TSF916D50F-S6 916.5 4.8 1.35 QCC8B  
TSF921D60-S6 921.6 2.6 1.9 QCC8B  
TSF927D20-S7 927.2 3.0 1.45 DCC6  
TSF931D00-S4 931 3.5 1.8 QCC8C  

Front end filters for Automotive Electronics and Remote Control:

  1. 433.92 MHz in Europe.
  2. 315 MHz or 915 MHz in the USA.
  3. 868-870 MHz In modern remote control applications.

Satellite Receiver Typical Specification (TSF)

Part Number Center Freq.
(MHz)
IL(dB) 3dB BW(MHz) Application Package
SMD Type DIP Type
TSF480D00A-D5 480 21 18 One-channel, Satellite Filters   TO39-2
TSF480D00B-S4 480 21 18 One-channel, Satellite Filters QCC8C  
TSF480D00C-D5 480 22.5 27 One-channel, Satellite Filters   TO39-2
TSF480D00D-S4 480 22.5 27 One-channel, Satellite Filters QCC8C  
TSF480D00E-D5 480 20 27 One-channel, Satellite Filters   TO39-2
TSF480D00F-D5 480 21 36 One-channel, Satellite Filters   TO39-2
TSF480D00G-S4 480 21 36 One-channel, Satellite Filters QCC8C  
TSF480D00H-D1 480 15 16 One-channel, Satellite Filters   TO-39
TSF480D00I-S4 480 12.5 15.3 One-channel, Satellite Filters QCC8C  
TSF480D00J-D5 480 22 38.6 One-channel, Satellite Filters   TO39-2
TSF479D50A-D5 479.5 21.5 8 One-channel, Satellite Filters   TO39-2
TSF479D50B-S4 479.5 21.5 8 One-channel, Satellite Filters QCC8C  
TSF479D50C-D5 479.5 18 6.5 One-channel, Satellite Filters   TO39-2
TSF479D50D-D2 479.5 22 16 (5.5 dB) One-channel, Satellite Filters   F-11
TSF479D50E-S4 479.5 22 16 (5.5 dB) One-channel, Satellite Filters QCC8C  
TSF402D78B-S4 402.78 20.5 / 20.0 15.5 / 28.0 Two-channel, Satellite Filters QCC8C  

Filters for Digital Satellite Broadcasting (DSB Receiver):

  1. Superior sound and picture quality.
  2. More available channels to choose from.
  3. Progressively digitized worldwide of Television and radio broadcasting.

RF Filters for GPS Typical Specification (TSF) Mobile Communications

Part Number Center Freq.
(MHz)
BW(MHz) IL(dB) Package
SMD Type DIP Type
TSF1542D50-S9 1542.50 40 3.5 DCC6C  
TSF1575D42A-S9 1575.42 2.4 1.6 DCC6C  
TSF1575D42B-S6 1575.42 2.4 1.6 QCC8B  

IF Filters for Wireless LAN Typical Specification (TSF) Mobile Communications

Part Number Center Freq.
(MHz)
3dB BW(MHz) IL(dB) Package
SMD Type DIP Type
TSF280D00-S4 280 20 11 QCC8C  
TSF374D00A-D1 374 22 9   TO-39
TSF374D00B-D1 374 22 8.5   TO-39
TSF374D00C-S4 374 22 9 QCC8C  
TSF374D00D-S4 374 22 8.5 QCC8C  
TSF374D00E-S4 374 19 9 QCC8C  
TSF374D00F-S4 374 20.5 9 QCC8C  
TSF374D00G-S6 374 23 9 QCC8B  
TSF374D00H-S6 374 21 9 QCC8B  

RF & IF Filters Applications (TSF)

Saw RF Filters (Front End Filters)

  1. The main key factor of insertion loss on system performance criticizes the application of resonant design principles such as LCRF (Longitudinally-Coupled Resonator Filter), IEF (Impedance Element Filter), and IEF balanced bridge filters. With many year's experience in Saw applications, Token takes advantages of these design principles for the development of low loss filters for front end applications.

  2. A combination of two port resonators can be described as an LCRF design. Typically, a parallel connection of 4 two port resonators is used. This advantage allows very low loss by reducing resistive losses and avoided waveguide effects.

  3. IEF composes the basic design principle for RF filters with one port resonators used as impedance elements. Resonators are constituted in a ladder configuration. The difference between the acoustic impedance of resonance and anti-resonance is used to achieved a filter performance. The resonators may be designed to have different resonant frequencies.

  4. For wide-band, low-loss filters, Token takes advantage of different cuts of higher coupling substate material (LiNbO3 / LiTaO3).

Saw IF Filters

  1. There are various different design principles which are suitable for the design of saw IF Filters. However, to meet the requirements perfectly is working on optimization.

  2. Precision filter design meets most of the requirements such as phase ripple, group delay and low amplitude in combination with high close-in rejection and fabulous selectivity. The disadvantage of precision filters is their high insertion loss. Token Saw Resonator design makes low insertion loss and miniaturized package size served better.

  3. SPUDT (Single Phase Unidirectional Transducer) filters combine transversal and resonant filter design principles to take advantage of optimization both. By optimizing the transduction and reflection of interdigital transducers, the filter performance can be improved while keeping the chip size the same. As a result of internal reflections, the signal length in the time domain is increased.

  4. Token utilizes SFIT(Slanted Finger Interdigital Transducer) filter to provide a low insertion loss with a wide bandwith in Saw design. Token has developed a set of practical design tools to achieve low group delay ripple, and suppression of reflections including the triple transit signal.

Order Codes (TSF)

TSF 302D00 A S1
Part Number
Center Freq.(MHz)
302D00 302 MHz
310D00 310 MHz
391D25 391.25 MHz
Series No.
None
A
B
C
D
Package
S1
S2
D1
D2
D3