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

2021-09-28 | Return

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

TDK Corporation 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 ℃ 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 ℃ environments.

The four products in the series have a rated current max ranging from 200 to 300 at 150 ℃, 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 ℃ environments

Key data

Type	Impedance [Ω] ± 25%	DC resistance [Ω] max.	Rated current [㎃] max. ＠125℃	Rated current [㎃] max. ＠150℃
MMZ1608SHE121ATD25	120	0.15	500	300
MMZ1608SHE471ATD25	470	0.30	500	250
MMZ1608SHE601ATD25	600	0.35	500	200
MMZ1608SHE102ATD25	1000	0.50	400	200

Source: http://www.global.tdk.com/