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NEC Mita Plant (at that time)
1955
NEC Corporation developed wire spring relay.
(Source: NEC Corporation 100-year history, Tohoku NEC 15-year history) -
NEC Tohoku
1970
Established NEC Tohoku for the purpose of mass production of Wire spring relay (Ichinoseki city, Iwate prefecture).
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1972
Demand for wire spring relays increased with the expansion of crossbar telephone exchanges.
Achieved 160 million wire spring relay production.
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1984
Started production of the MR301, which is the prototype of the current power relay.
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1988
Started production and shipment of the world's first twin relay.
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1996
Established NEC Components Philippines, inc. (currently EMD Technologies Philippines Inc.) in the Philippines.
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2002
Relay business has been spun off from NEC Tohoku.
Established NEC TOKIN Iwate Co., Ltd. -
2003
Started production of EX series (the blockbuster product)
（EX series production exceeded 2.4 billion units in 2021.） -
2006
Integrated with NEC TOKIN Corporation (currently Tokin) and renamed as NEC TOKIN Iwate operations.
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2009
Moved to NEC TOKIN Shiroishi operations (Shiroishi city, Miyagi prefecture)
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2013
Established the second factory in the Philippines.
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2017
Spun off from NEC TOKIN, and established
EM Devices Corporation and
EMD Technologies Philippines Inc. -
2022
Established development center NEXEM ATC
(Advanced Technology Center) at Tohoku University (MaSC) -
2024
Started mass production of EV relays
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