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TDK extends automotive series of varistors with new models for LIN and CAN

Voltage Protection Devices

TDK extends automotive series of varistors with new models for LIN and CAN

February 20, 2024

TDK Corporation (TSE: 6762) has announced the addition of two new varistors to its AVRH series for automotive applications. Both are characterized by the high electrostatic discharge (ESD) withstanding voltage demanded to ensure the safe operation of safety-critical automotive functions that comprise advanced driver assistance systems (ADAS).

Both of the two new varistors in TDK’s AVRH series are compliant with the AEC-Q200 automotive standard and fulfill 25 kV voltage resistance requirement under IEC 61000-4-2 standard in the electrostatic discharge test. They operate within the temperature range of -55 °C to +150 °C. They not only meet anti-ESD requirements, they also have minimal footprints, useful as automotive OEMs attempt to miniaturize.

Mass production of both the AVRH10C220YT201MA8 and the AVRH16A2C270KT200NA8 is scheduled to begin in March 2024.

The percentage of electronics in the total BOM (bill of materials) of automobiles is increasing as automotive OEMs add and refine ADAS features such as lane departure warning, collision avoidance, and adaptive cruise control. That is true of electric vehicles (EVs), hybrids, and traditional gas-fueled vehicles alike. Auto manufacturers are also working on autonomous driving, which requires the inclusion of even more sophisticated electronics. The electronic control units (ECUs) that manage all of these new electronic subsystems are particularly susceptible to damage from ESD. The problem is that even the briefest interruptions in safety-critical ADAS and autonomous driving functions are intolerable, and the potential for the problem only increases as more electronics are added to each vehicle.

Varistors are fundamental circuit elements for handling severe voltage irregularities. In automotive applications, they protect delicate ECUs, and are instrumental in conforming to automotive safety standards such as AEC-Q200 and IEC 61000-4-2.

The AVRH10C220YT201MA8 is designed to support electronics on a LIN bus. It has a maximum continuous voltage of 16 V and a capacitance of 200 pF. The 1005 size (1.0 mm (L) x 0.5 mm (W) x 0.5 mm (H)) is 75% smaller than the existing model. The smaller size allows customer devices to be smaller therefore reducing the consumption of materials. This product also uses TDK's proprietary coating technology to enhance durability. Small as it is, it achieves the high reliability needed to meet the automotive quality standard.

AVRH16A2C270KT200NA8 is designed to support electronics on a CAN bus. It has a 2-in-1 array structure, in which the functions of two varistors are integrated into a single element. Another characteristic is that TDK's proprietary design technology minimizes the capacitance difference between the channels. It is designed at the 1608 size (1.6 mm (L) x 0.8 mm (W) x 0.6 mm (H)).

Moving forward, TDK will continue providing customers with flexible support for designing their diversified automotive equipment by expanding the product lineup through further downsizing, increased operating voltage and expansion of capacitance range, etc.

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Glossary

Main applications

Main features and benefits

AVRH Series

AVRH10C220YT201MA8

AVRH16A2C270KT200NA8

Key data

Type

Outer dimensions

[mm]

Maximum allowable circuit voltage

[V]

Capacitance

[pF]

Capacitance Difference

[pF]

AVRH10C220YT201MA8

1.0 x 0.5 x 0.5

16

200

-

AVRH16A2C270KT200NA8

1.6 x 0.8 x 0.6

19

20

1.0 Max

AVRH Series product line

     

size
EIA

Item

VBr
[V]

VDC
[V]

Capacitance
[pF]

LIN

CAN, CAN−FD

Ethernet
10Base−T1S

Ethernet
100Base−T1

Ethernet
1000Base−T1

typ.

max.

0402

AVRH10C270KT350NA8

27

19

35

45.5

 

x

     

0402

AVRH10C270KT150NA8

27

19

15

19.5

 

x

     

0402

AVRH10C221KT1R5YA8

220

70

1.5

1.63

   

x

 

x

0402

AVRH10C101KT1R2YE8

110

70

1.23

1.36

   

x

 

x

0402

AVRH10C101KT4R7YA8

115

70

4.7

5.27

     

x

 

0402

AVRH10C101KT1R1NE8

110

70

1.1

1.4

       

x

0402

AVRH10C220YT201MA8

22

16

200

240

x

       

0603

AVRH16A2C270KT200NA8

27

19

20

26

 

x

     

About TDK Corporation

TDK Corporation is a world leader in electronic solutions for the smart society based in Tokyo, Japan. Built on a foundation of material sciences mastery, TDK welcomes societal transformation by resolutely remaining at the forefront of technological evolution and deliberately “Attracting Tomorrow.” It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK‘s comprehensive, innovation-driven portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2023, TDK posted total sales of USD 16.1 billion and employed about 103,000 people worldwide.

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Further information on the products can be found under

https://product.tdk.com/system/files/dam/doc/product/protection/voltage/varistor_ctvs/catalog/

Contacts for regional media

 xxx

Europe

Contacts for regional media

 xxx

Region

Contact

Location 

Phone

Mail

Japan

Mr. Daiki ITO

TDK Corporation
Tokyo, Japan

+813 6778-1055

TDK.PR@tdk.com

ASEAN

Ms. Jiang MAN
Ms. Pei Lu LEE

TDK Singapore (Pte) Ltd.
Singapore

+65 6273 5022

Email Contact

Greater China

Ms. Clover XU

TDK China Co., Ltd.
Shanghai, China

+86 21 61962307

Email Contact

Europe

Mr. Frank TRAMPNAU

TDK Management Services GmbH
Duesseldorf, Germany

+49 211 9077 127

Email Contact

America

Ms. Sara M. LAMBETH

TDK Corporation of America
Plano, TX, USA

+1 972-409-4519

Email Contact