As a wiring harness engineer or a wiring harness factory procurement practitioner, when you want to choose the connector housing you need, you will find that Chinese product models all start with DJ, such as DJ7011-6.3-21/2, DJ7071-6.3/ 7.8-20, etc.Do you feel confused and do not understand what it means?
Typhoenix would like to introduce the numbering rules of China electrical connectors to help you quickly find the products you need. In fact, this rule applies not only used for automotive wire connectors, but also to all plastic parts.
Description of automotive connector housing and accessory coding
● 1. Product Code
The first two or three letters of the code represent different products, as follows:
| Name | Connector | Fuse Box | Clip | Cable Tie | Clamp | Staple | Relay Box | Relay Seat | Centralized Controller |
| Code | DJ | BX | DWJ | ZD | XJ | KD | JDQH | JDQZ | JKQ |
It should be noted that products starting with DJ stands for connector Housing and terminals. However, this article only introduces the coding rules of plastic products, so the numbering rules of terminals are not included.
● 2. Application Code
This part of code is omitted in ordinary connectors, and this code will only be added when it is used in the below specific position.
| Application | Instrument | Relay | Light | Fuse | Switch | Generator |
| Code | Y | J | D | B | K | F |
● 3. Classification code
| Classification | Flat Housings | Cylindrical Sheath |
| Code | 7 | 3 |
● 4. Pin Number Code
The Pin number is filled in the actual Number of Positions. For example, 01 represents a 1 Pin connector, and 35 represents a 35 Pin connector.
● 5. Design Serial Number
When the same number of position and the same specification (Mating Tab Width) appears, upgrade this number to distinguish the different types of the connectors. As shown in the following picture:
● 6. Deformation Code
Under the condition that the main electrical parameters and basic structure of the product remain are same, it shall be represented by uppercase letters A, B, C or other letters. See picture:
● 7. Specification Code
It indicates the specification series of the connector, which is represented by the Mating Tab width (mm) of the connector housing. For example, our connector sheath is divided into the following small categories according to different specification:
▶ 025(0.64mm) ▶ 030(0.80mm) ▶ 040(1.00m) ▶ 050(1.20m)
▶ 060(1.50mm) ▶ 070(1.80mm) ▶ 090(2.20mm) ▶ 110(2.80mm)
▶ 118(3.00mm) ▶ 187(4.70mm) ▶ 205(5.00mm) ▶ 250(6.00mm)
▶ 312(7.80mm) ▶ 375(9.50mm)
● 8. Allocation Code No.1
|
Category |
Plug |
Socket |
|
Code |
1 |
2 |
● 9. Allocation Code No.2
|
Category |
Component |
Housing |
Terminal Lock |
Seal Ring |
Sealing Plug |
Cover |
Restricted Parts |
Side Plate |
Bracket |
|
Code |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Combine the first and second digits of the configuration code, the most commonly used combination is:
11：Male Connector Housing
21：Female Connector Housing
The others are Connector Housing accessories..
After understanding the above numbering rules, we can determine the basic technical parameters after see a connector code.
For example: DJ7011-6.3-21
This No. indicates that it is a Flat Female electric socket with 1 pin and the Mating Tab width is 6.3mm². When souring the Connector sheath, possible models can be deduced according to the required technical parameters.
For example, you need to find a 4 Pin electric male plug used in the lighting system, and the Mating Tab width is 1.8mm, then the possible model of this product is DJD704*-1.8-11.
If you are looking for products on our website, you only need to search according to the corresponding classification. If you meet any problems, please contact us.
Any questions, feel free to Contact us now:
Website: https://www.typhoenix.com
Email: info@typhoenix.com
Contact: Vera
Mobile/WhatsApp: +86 15369260707
Post time: Aug-06-2023