01 of 04 version 2010 rfid transponder coils tr4308i chip rfid transponder coils transponder coils (tr4308i) is the key of radio frequency identifcation (rfid) system preview token tr4308i transponder coil series is specifed for rfid applications for the best performing designed at 125 khz. the tr4308i covers a wide range of electrical performances and offers better sensitivity, greater read distance and higher srf than other coils its size. the tr4308is length and cross section area are optimized for best sensitivity in the coil axis. the coil is wound on a plastic base, providing great durability and allowing this part to withstand harsh mechanical shock. with operating temperature range to 125c, these coils are ideal for a wide range of applications. radio frequency identifcation (rfid) is the system of using radio signals to send information identifying a particular situation or item. token tr4308i is suited for wireless data transmission in low frequency rfid products, such as immobilizers, tpms, keyless entry. other industrial applications include access control and tracking devices. in addition to our standard models, token can design transponder coils to operate at other frequencies. customized inductance values are available on request. features : - high q value. - low profle with an extended length. applications : - car remote control key. http://www.token.com.tw/ rfq token.com.tw t oke n
02 of 04 version 2010 tr4308i chip rfid transponder coils confgurations & dimensions electrical characteristics b a tc-xxx top view e d c f land pattern g h type a b c d e f g h TC4308I 11.43 3.15 2.74 1.01 0.51 2.79 1.78 8.46 note : design as customers requested specifcations. part number inductance (mh) q (min) test freq. (khz) srf (khz)(min) dcr ()(max) TC4308I - 401j 0.40 15 125 4500 7.4 TC4308I - 901j 0.90 15 125 4000 22 TC4308I - 112j 1.08 15 125 4000 25 TC4308I - 202j 1.97 17 125 2400 34 TC4308I - 242j 2.38 17 125 2200 39 TC4308I - 332j 3.30 17 125 1800 51 TC4308I - 412j 4.15 17 125 1700 74 TC4308I - 492j 4.90 17 125 1300 96 TC4308I - 682j 6.80 17 125 1000 112 TC4308I - 712j 7.10 17 125 1000 115 TC4308I - 812j 8.10 17 125 960 123 note: test freq.: 125khz / 0.25v. operating temp.: -40c+85c. http://www.token.com.tw/ rfq token.com.tw
03 of 04 version 2010 tr4308i chip rfid transponder coils transponder coils applications transponder coils in an rfid radio frequency identifcation system rfid, radio frequency identifcation, is the system of using radio signals to send information identifying a particular item. the most common application of rfid is to track and locate any subject including material, or moving item. the rfid transponder coil is part of the coupling device and acts as the transmitting antenna. the main specifcations of the transponder coil are sensitivity and read distance, however, the inductance of the transponder coil directly infuences the sensitivity and the read distance. generally , a higher inductance provides greater sensitivity resulting in a longer read distance. there are two major components in an rfid system: tag : the transponder programmed with unique information. the tag consists of an integrated circuit and a coupling device. the integrated circuit stores specifc data unique to that tag. reader : the interrogator includes a decoder to interpret data. the coupling device interfaces with the reader. the manufacturer of the tag usually specifes the inductance of the coil to be used. the read distance is defned as the maximum distance from the reader that the transponder responds to the reader s magnetic feld. the reader produces a magnetic feld that triggers the tag. when the reader receives the transmitted data, it interprets the data and takes appropriate action as shown in fgure 1. when the transponder enters the feld produced by the reader, the coil produces a voltage inside the tag. in an active transponder, the voltage is used to wake the tag and use its internal battery. in a passive transponder, this voltage can be used to power the tag. active transponders generally have longer read distances, shorter operational life and are larger and more costly to manufacture. passive transponders are generally smaller, have a longer life and are less expensive to manufacture. for optimum performance, the transponder coil is used in a parallel lc circuit as shown in fgure 2. adding a capacitor to the circuit maximizes the read distance. the lc circuit is designed to resonate at the operating frequency of the reader. to calculate the value of the capacitor, use the following equation: capacitance (c) = 1 / (inductance l x (2 x frequency ?)) 2 magmetic feld produced by the reader reader data transmitted by the tag tag figure 1. rfid system figure 2. lc circuit http://www.token.com.tw/ rfq token.com.tw
04 of 04 version 2010 tr4308i chip rfid transponder coils back to 1st page - rfid transponder coils (tr4308i) ? part number: tr4308i how to order ? ? 401 tr4308i ? code tolerance 401 0.40h 901 0.90h 112 1.08h ? tolerance ? design code code tolerance j 5% http://www.token.com.tw/ rfq token.com.tw
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