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A yellow-tipped EIAJ connector

The EIAJ connector type, more formally known as EIAJ RC-5320A, is a type of coaxial power connector or jack for small appliances.


The entire series of connectors has a built-in retention feature. On types 1, 2, and 3 this involves a bevel on the barrel near the tip, while on types 4 and 5 the tip of the insulator ring has a larger diameter than the metal barrel.


The design philosophy is that higher voltages should be supplied via larger plugs to prevent equipment damage. A larger plug will not go into a smaller jack.

Connector Name Minimum Voltage Rated Voltage Rated Current Outer Diameter Inner Diameter Pin Diameter Shaft Length Notes
EIAJ-01 0 V 3.15 V 2 A plug: 2.35 mm

jack: 2.75 mm hole

plug: 0.7 mm

jack: 0.65 mm pin

none 9.5~13 mm Philmore 235 plug/205 PCB jack
EIAJ-02 3.15 V 6.3 V 2 A plug: 4.0 mm

jack: 4.4 mm hole

plug: 1.7 mm

jack: 1.65 mm pin

none 9.5 mm Philmore 240 plug/TC240 cord/207 PCB jack
EIAJ-03 6.3 V 10.5 V 2 A plug: 4.75 mm

jack: 5.15 mm hole

plug: 1.7 mm

jack: 1.65 mm pin

none 9.5~12 mm Philmore 275 plug/TC275 cord/220 PCB jack
EIAJ-04 10.5 V 13.5 V 2 A 5.5 mm 3.4 mm 1.0 mm 9.5~13.5 mm Philmore 255 plug
EIAJ-05 13.5 V 18.0 V 2 A 6.5 mm 4.4 mm 1.4 mm 9.5~16 mm Philmore 265 plug/TC265 cord/214 PCB jack


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

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.

EIAJ RC-5321[edit]

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.

Previously known as EIAJ RCX-5321.

EIAJ RC-5322[edit]

According to Hosiden, this is a 12V/24V barrel connector designed for electronic equipment used in cars. The outside diameter is 6.5mm. [1]

Previously known as EIAJ RCX-5322.

Companies that use this standard[edit]

See also[edit]

External links[edit]



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/EIAJ_connector — Please support Wikipedia.
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