GJB 600A-2001
General specification for threaded circular electrical connectors (English Version)
- Standard No.
- GJB 600A-2001
- Language
- Chinese, Available in English version
- Release Date
- 2001
- Published By
- Military Standard of the People's Republic of China-General Armament Department
- Latest
- GJB 600A-2001
- Introduction
Standard Framework and Technological Evolution
GJB 600A-2001, as the core standard for threaded circular electrical connectors of our army, inherits the basic framework of the 1993 version. The main updates are reflected in:
Technical Dimension GJB 600-1993 GJB 600A-2001 Temperature Grade Category 3 (-55~125℃) Expanded to Category 5 (newly added 175℃/200℃) Contact type Tin soldering Add detachable crimping contact Sealing requirements Basic air tightness New fire protection performance indicators (Class K 20 minutes flame retardant)
Analysis of key technical requirements
3.4.2 Insulated mounting plate design
Dual-track system of elastic materials and hard materials is adopted:
- Elastic interface: Shore hardness grade A 60-85 (Class H relaxed to 35-55)
- Contact spacing: Divided by usage level, the highest grade C requires 7.94mm electrical clearance
3.9 Sealing performance indicators
A certain type of shipborne equipment adopts Type H connector, and achieves leakage rate control of 1×10-1 Pa·cm3/s through glass sintering process, meeting the long-term reliability in salt spray environment.
Key points for implementing the quality assurance system
4.3 Identification and inspection process
Inspection groups Core items Sample size Group 1 (Basic) Appearance inspection, magnetic permeability, temperature shock 2 sets/model Group 6 (Class H special) Liquid immersion, insulation resistance 7 sets/size segment 4.4.2 Periodic inspection strategy
It is recommended to establish a three-dimensional control mechanism:
- Material batch traceability (3.3.6 Aluminum alloy cadmium plating)
- Process stability monitoring (4.6.22 Contact insertion and extraction force)
- Environmental adaptability verification (3.31 Random vibration test)
Typical problem solutions
Contact corrosion protection
Regarding 3.3.1 Incompatible metal requirements:
- Plating solution: Non-H class contacts use 2.54μm silver plating (3.3.3.1.1)
- Process control: Soldering contacts must use alcohol rosin flux (3.4.1.1.2)
GJB 600A-2001 history
- 2001 GJB 600A-2001 General specification for threaded circular electrical connectors
- 1988 GJB 600-1988 General specification for threaded circular electrical connectors