RFID Transponder Coils (TR4308I)

Transponder Coils (TR4308I) is The Key of Radio Frequency Identification (RFID) System. Direct (TR4308I) RFID coil series is specified 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 TR4308I's 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 125°C, these coils are ideal for a wide range of applications.

Radio Frequency Identification (RFID) is the system of using radio signals to send information identifying a particular situation or item. Direct (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, Direct can design RFID coils to operate at other frequencies. Customized inductance values are available on request. Download complete specification (TR4308I) PDF (395KB).

Features:
  1. High Q value.
  2. Low profile with an extended length.
Applications:
  1. Car remote control key.
Configurations & Dimensions (Unit: mm) (TR4308I)
RFID (TR4308I) Dimensions
RFID (TR4308I) Dimensions
Type A B C D E F G H
TR4308I 11.43 3.15 2.74 1.01 0.51 2.79 1.78 8.46
Note: Design as Customer's Requested Specifications.
Electrical Characteristics (TR4308I)
Part Number Inductance
(mH)
Q
(min)
Test Freq.
(KHz)
SRF
(KHz)(min)
DCR
(Ω)(max)
TR4308I - 401J 0.40 15 125 4500 7.4
TR4308I - 901J 0.90 15 125 4000 22
TR4308I - 112J 1.08 15 125 4000 25
TR4308I - 202J 1.97 17 125 2400 34
TR4308I - 242J 2.38 17 125 2200 39
TR4308I - 332J 3.30 17 125 1800 51
TR4308I - 412J 4.15 17 125 1700 74
TR4308I - 492J 4.90 17 125 1300 96
TR4308I - 682J 6.80 17 125 1000 112
TR4308I - 712J 7.10 17 125 1000 115
TR4308I - 812J 8.10 17 125 960 123
Note: Test Freq.: 125KHz / 0.25V.
Operating Temp.: -40°C+85°C.
Order Codes (TR4308I)
TR4308I - 401 J
 
Part Number
TR4308I
 
Inductance
401 0.40(mH)
901 0.90(mH)
112 1.08(mH)
Tolerance
J 5%
Note: Design as Customer's Requested Specifications.