Specifications
| Shell | Aluminum Alloy 2A12-T4 (Chemical Nickel Plating) |
| Insulator | Thermoplastic Material FX-502 |
| Sealing | Silicone Rubber Materials, Polyurethane Adhesive |
| Contact | Gold-Plated Copper Alloy |
| Mechanical Life | 500 cycles |
| Mechanical Demating Force | 39 N ~ 100 N |
| Sinusoidal Vibration | Frequency 10 ~ 50 Hz, Full Amplitude 2 mm
Frequency 50 ~ 2000 Hz, Acceleration 200 m/s² |
| Constant Frequency Vibration | Frequency 50Hz, 260Hz, Acceleration 200 m/s² |
| Shock | 980 m/s² |
| Acceleration | 350 m/s² |
| Operating Temperature | -40℃ ~ +85℃ |
| Salt Spray Test | 48 h |
| Relative Humidity | At 40℃ ± 2℃: 90% ~ 95% |
| Operating Pressure | 6.67 Pa ~ 200 kPa |
| Electromagnetic Shielding | Not less than 60 dB (50k V/m, 0 ~ 100 MHz) |
| Sealed | Socket 2 MPa (Except for High-frequency Contacts) |
| High-temperature Flame | After withstanding 2000℃ for 0.6 seconds, insulation resistance between each 2 contacts on the rear of socket is not less than 20 MΩ in 70 seconds under hot airflow of 80 kcal/m². |
Electrical Ratings
Contact Characteristics
|
Pin Diameter |
1 mm | 1.5 mm | Ethernet | 8#Dual Coaxial | 12#Coaxial |
| Operating Current | 5 A | 10 A | — | — |
— |
|
Contact Resistance |
≤5 mΩ | ≤5 mΩ | — | — | — |
| Number of Contacts | 24 | 12 | 1 | 2 |
1 |
Note: When multiple contacts are operating simultaneously, the rated current decline rate meets the requirements in the table below.
|
Number of Contacts |
1 ~ 10 | 11 ~ 20 | 21 ~ 30 | 31 ~ 50 |
| Decline Rate % | 0% | 10% | 20% |
30% |
Insulation Resistance
|
1 atm |
Humid and Heat | High Temperature |
| ≥1000 MΩ | ≥20 MΩ |
≥500 MΩ |
Dielectric Withstand Voltage
|
Sea Level |
Low Pressure | Humid and Heat |
| AC 1000 Vrms | AC 200 Vrms |
AC 250 Vrms |
How to Order

Connector Specifications
|
Quality Grade |
Plug Type | Part Number of Socket |
| J Grade | YF28-40TJ |
YF28-40ZK |
YF28-40 Contact Arrangement (Front View of Plug Mating Surface)
![]() |
|
Contact Type |
Symbol | Contact Specifications | Number of Contacts | Contact Soldering Cup | ||
| Inner Diameter | Section Area |
Solderable Area |
||||
|
Ordinary Contact |
![]() |
Φ1.0mm | 24 | Φ1.5 mm | 1.77 mm2 | 1.24 mm2 |
![]() |
Φ1.5mm | 12 | Φ1.8 mm | 2.54 mm2 |
1.78 mm2 |
|
|
Coaxial Contact |
![]() |
12#Coaxial | 1 | —— | ||
![]() |
8#Coaxial | 2 |
—— |
|||
|
Fiber Optic Contact |
![]() |
Ethernet Socket | 1 |
—— |
||
Dimension
Plug YF28-40TJ
![]() |
Socket YF28-40ZK
![]() |
Plug/Socket YF28-40TJ/ZK
![]() |















