June 29, 2017
Inductors: Robust 3D transponder coils with high sensitivity for automotive
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TDK Corporation presents a new series of 3D transponder coils with a high sensitivity level for passive entry passive start (PEPS) and other access systems. Measuring just 11.5 mm x 12.5 mm x 3.6 mm, the B82453C*A* series features six types of 3D transponder coils that offer sensitivity levels from 45 mV/µT to 83 mV/µT and inductance values from 4.75 mH to 13.2 mH. The center frequency is at 125 kHz. Thanks to the optimized core geometry of the new 3D transponder coils, their sensitivity levels are about 20 percent higher than that of predecessor or competitor components with comparable geometries and inductance values. This enables the wake-up function of PEPS in vehicles applications to be activated at greater distances.
The RoHS-compatible 3D transponder coils have a robust overmolded casing and the terminals of the windings are laser-welded. As a result, they feature very high mechanical stability, as is proven by the severe drop tests required for PEPS applications. Accordingly, the new transponder coils are qualified to AEC-Q200.
Main applications
- Passive entry passive start (PEPS) systems and other access systems
Main features and benefits
- High sensitivity
- Compact dimensions of just 11.5 mm x 12.5 mm x 3.6 mm
- Very high mechanical stability
- Qualified to AEC-Q200
Key data
| Ordering code | Axis | LR [mH]±3% | Q (typ.) -10% /+15 % | S (typ.) [mV/µT] | fres,min. [kHz] | RDC max. [Ω] |
|---|---|---|---|---|---|---|
| B82453C0300A000 | X | 4.75 | 23.5 | 60 | 600 | 80 |
| Y | 4.75 | 23.5 | 57 | 600 | 80 | |
| Z | 5.85 | 19.0 | 54 | 400 | 165 | |
| B82453C0203A000 | X | 4.75 | 23.5 | 60 | 600 | 80 |
| Y | 4.75 | 24.5 | 57 | 600 | 80 | |
| Z | 7.20 | 19.5 | 50 | 400 | 165 | |
| B82453C0275A000 | X | 7.20 | 23.5 | 80 | 400 | 95 |
| Y | 7.20 | 24.5 | 75 | 420 | 100 | |
| Z | 7.20 | 19.5 | 50 | 400 | 165 | |
| B82453C0285A000 | X | 6.30 | 23.5 | 75 | 440 | 90 |
| Y | 6.30 | 24.5 | 70 | 460 | 90 | |
| Z | 9.00 | 19.5 | 63 | 360 | 190 | |
| B82453C0301A000 | X | 6.30 | 23.5 | 75 | 440 | 90 |
| Y | 6.30 | 24.5 | 70 | 460 | 90 | |
| Z | 11.00 | 19.5 | 73 | 330 | 220 | |
| B82453C0270A000 | X | 6.75 | 23.5 | 77 | 430 | 92 |
| Y | 6.75 | 24.5 | 73 | 450 | 95 | |
| Z | 13.20 | 19.5 | 83 | 300 | 250 |
Further information on the products can be found under www.epcos.com/transponder.
About TDK Corporation
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes passive components, such as ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, high-frequency products, and piezo and protection components, as well as sensors and sensor systems and power supplies. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK's further main product groups include magnetic application products, energy devices, and flash memory application devices. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2017, TDK posted total sales of USD 10.5 billion and employed about 100,000 people worldwide.
