TDK Electronics · TDK Europe

EMC Components

September 28, 2021

TDK develops industry’s first high-reliability chip beads for automotive

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  • Compatible with high durability soldering in 150 ºC environments
  • Designed for Automotive applications such as ECM, ABS, EPS, EV-EHV, inverters and LED headlights

TDK Corporation (TSE:6762) today announced the development and mass production of the MMZ1608-HE series of high-reliability chip beads for automotive use, compatible with high-durability solder in 150 ºC environments. This series marks the industry’s first* high-reliability chip bead specifically designed for automotive applications associated with engine control modules (ECM), anti-lock brake systems (ABS), electric power steering (EPS), electric and hybrid electric vehicles (EV/EHV), inverters and LED headlights.

In high-temperature automotive environments, such as engine compartments, high-durability solder is increasingly used to prevent solder cracks in the bonds between chip components and the mounting substrate. Since high-durability solders do not stretch easily and impart higher stress compared with conventional solders, they place a large load on chip components and do not meet the reliability requirements of existing chip beads. With improvements to the terminal electrode material and plating process, the MMZ1608-HE series improves the bonding strength between the terminal electrode and plating, making it ideal for use with high-durability solder in 150 ºC environments.

The four products in the series have a rated current max ranging from 200 to 300 at 150 ºC, DC resistance max between 0.15 to 0.5, and impedance from 120-1000, respectively.

TDK will continue to expand its lineup of compact sizes and various impedances to support a wide range of automotive specifications and designs.

* Source: TDK, as of September 2021

Main applications

  • Automotive electrical control chips on which high-durability solder is expected to be used, including ECM, ABS, EPS, EV-EHV, inverters and LED headlights

Main features and benefits

  • Compatible with high durability soldering in 150 ºC environments

Key data

Type

Impedance

[Ω] ± 25%

DC resistance
[Ω] max.

Rated current
[mA] max.

@125ºC

Rated current
[mA] max.

@150ºC

MMZ1608SHE121ATD25

120

0.15

500

300

MMZ1608SHE471ATD25

470

0.30

500

250

MMZ1608SHE601ATD25

600

0.35

500

200

MMZ1608SHE102ATD25

1000

0.50

400

200