EIAJ connector

The EIAJ connector, more formally known as EIAJ RC-5320A, is a coaxial power connector or jack for small appliances. It is recognised by many consumers by the "yellow tip" (a yellow plastic insulator) at the end of the jack. It is also notable that the entire series of connectors has a built-in retention feature. On types 1, 2, and 3 this is with a bevel on the barrel near the tip, while on types 4 and 5 this is with the tip of the insulator ring having a larger diameter than the metal barrel.

The logic is that larger voltages should be supplied via a larger (and incompatible by design) jack to prevent equipment damage.

The Electronic Industries Association of Japan (EIAJ) and the Japan Electronic Industries Development Association have merged to form the Japan Electronics and Information Technology Industries Association (JEITA), an electronics and IT industry trade organization.

This standard was originally created in 1992 as EIAJ RC-6705, updated in 1997, and updated again in 2005.

EIAJ RC-5321

This is a unique-looking barrel connector, apparently intended for providing a DC output jack (most DC jacks are used for power input).

Possibly available in multiple voltage ranges, the one for voltage classification 2 (3.15 to 6.3 V) has an outside diameter of 4.75 mm and a protruding pin of 2.5 mm diameter. [http://www.aruncomponents.co.uk/Marushin/EIAJ%20RC5320A%20Type%204%20&%205,%20RC5321.pdf]

Previously known as EIAJ RCX-5321.

EIAJ RC-5322

According to Hosiden, this is a 12V/24V barrel connector designed for electronic equipment used in cars. The outside diameter is 6.5mm. [http://www.aruncomponents.co.uk/Marushin/EIAJ%20RC5322%205.5%20by%202.1%20%202.5.pdf]

Previously known as EIAJ RCX-5322.

Companies that use this standard

* Sony - Japan
* Pioneer - Japan
* Panasonic brand of Matsushita Electric Industrial Co., Ltd. - Japan

ee also

* Coaxial power connector
* DC plug
* Jack plug
* JEITA

External links

* [http://www.smk.co.jp/product_e/pdf/plugjack/ESF311201.pdf example specifications]
* [http://www.jeita.or.jp/english/standard/html/4_28.htm JEITA Connector Standards (inherited from EIAJ)]

References

* [http://www.hosiden.co.jp/web/english/web/products/pdf/e_pg02_dengen.pdf EIAJ DC connector specifications]
* [http://www.hosiden.co.jp/web/english/web/products/pdf/e_product.pdf Hosiden catalog]