Voltage protection devices: Miniaturized multilayer varistors for automotive Ethernet

• Low capacitance and narrow tolerance for signal integrity at high data rates
• Miniature dimensions of 1.0 x 0.5 x 0.5 mm
• High operating temperatures up to 150 °C
• Qualified to AEC-Q200

August 20, 2019

TDK Corporation (TSE:6762) has expanded its lineup of multilayer varistors with the new AVRH10C101KT1R1NE8 for automotive Ethernet. Thanks to the extremely precise multilayer technology, the product features a low capacitance of just 1.1 ± 0.3 pF, ensuring signal integrity even at the high data rates of automotive Ethernet. With its IEC 1005 package (1.0 x 0.5 x 0.5 mm) the varistor boasts a volume that is 75 percent smaller than existing components. The component, which is qualified to AEC-Q200, features a maximum operating voltage of 70 V and an operating temperature range of -55 to +150 °C, thus expanding the range of possible applications.

Automotive Ethernet is the communication infrastructure of choice for today's vehicles since ECUs require a high speed, low latency communication in advanced driver assistance systems (ADAS) and autonomous driving. TDK's newest varistor protects automotive ECUs and components from ESD without impeding high speed communication between ECUs.

Moving forward, TDK will continue to expand the product lineup in terms of compactness, operating voltage, and capacitance to support a wide range of automotive device designs.

Main applications

• ESD protection of ECUs networked with automotive Ethernet

Main features and benefits

• Low capacitance through extremely precise multilayer technology
• Compact dimensions of just 1.0 x 0.5 x 0.5 mm
• High reliability; qualified to AEC-Q200
• High operating temperature of up to 150℃

Key data

Type	Dimensions [mm]	Max. operating voltage [V]	Capacitance [pF]	Applications
AVRH10C101KT1R1NE8	1.0 x 0.5 x 0.5	70	1.1 ±0.3	Ethernet 1000Base-T1

Multilayer varistor portfolio / Application overview (TDK and EPCOS brand products)

Type	Case size [EIA]	VBr [V]	VDC [V]	Capacitance [pF]		AEC−Q200	LIN	CAN	CAN−FD	MOST	FlexRay	Ethernet 100Base−T1	Ethernet 1000Base−T1
				typ.	max.
0402, single
CT0402S14AHSG	0402	> 28	16	10	15	x	x	x	x	x	x
CT0402S17AG	0402	> 32.5	19	15	-	x	x	x	x	x	x
CT0402S20AHSG_P	0402	> 100	24	4.7	5.7	x						x
AVRH10C270KT350NA8	0402	27	19	35	45.5	x		x	x	x	x
AVRH10C270KT150NA8	0402	27	19	15	19.5	x		x	x	x	x
AVRH10C101KT4R7FA8	0402	100	70	4.7	5.7	x						x
AVRH10C101KT1R1NE8	0402	> 100	70	1.1	1.4	x							x
0603, single
CT0603S20AHSG_P	0603	> 100	24	4.7	5.7	x						x
CT0603L25HSG	0603	> 61	32	10	15	x	x	x	x	x	x
CT0603S14AHSG	0603	> 28	16	15	30	x	x	x
AVRM1608C270KT221M	0603	27	19	220	264	x	x
AVR-M1608C270MTAAB	0603	27	17	30	-	x		x	x	x	x
AVR-M1608C270MTABB	0603	27	17	15	-	x		x	x	x	x
0508, array
CA05M2S10T100HG	0508	> 26	12	2 x 10 matched ± 3%	15	x		x	x	x	x

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 comprehensive 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, Chirp, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. 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 2019, TDK posted total sales of USD 12.5 billion and employed about 105,000 people worldwide.

Contacts for regional media

Region	Contact		Phone	Mail
Japan	Mr. Yoichi OSUGA	TDK Corporation Tokyo, Japan	[phone]	[e-mail]
ASEAN	Ms. Jiang MAN Ms. Pei Lu LEE	TDK Singapore (Pte) Ltd. Singapore	[phone]	[e-mail]
Greater China	Ms. Clover XU	TDK China Co., Ltd. Shanghai, China	[phone]	[e-mail]
Europe	Mr. Frank TRAMPNAU	TDK Europe GmbH Duesseldorf, Germany	[phone]	[e-mail]
America	Ms. Sara M. LAMBETH	TDK Corporation of America Irving, TX, USA	[phone]	[e-mail]