The 1.85mm series connector (also known as the 1.85mm RF connector) is a high-performance radio frequency (RF) connector that is primarily used in applications that require high frequency, high precision, and low loss, especially in signal transmission at 26.5 GHz or higher. It is a compact design of the SMA series connector that provides a smaller size and higher frequency performance compared to other high-frequency connectors such as the V Type (2.92mm) or K Type (1.0mm).
Main Technical Specifications:
◆ Characteristic Impedance: 50Ω
◆ Frequency Range: DC~67GHz
◆ Insulation Resistance: ≥3000MΩ
◆ Dielectric Withstand Voltage: 500V(rms)
◆ Voltage Standing Wave Ratio (VSWR): ≤1.30
◆ Mating Cycles: 500 times

| Size | mm | in | ||
| min | max | min | max | |
| a | 1.850 | 2.450 | 0.073 | 0.096 |
| b | 4.370 | 4.630 | 0.172 | 0.182 |
| C | 0.000 | 0.0762 | 0.000 | 0.003 |
| d | 3.380 | 3.480 | 0.133 | 0.137 |
| e | 0.250 | 0.360 | 0.010 | 0.014 |
| f | - | RO.050 | - | R0.002 |
| g | 28° | 32° | 28° | 32° |
| h | 0.7909 | 0.8163 | 0.0311 | 0.0321 |
| j | 1.335 | 1.445 | 0.053 | 0.057 |
| k | 0.000 | 0.250 | 0.000 | 0.010 |
| l | 7.010 | 7.110 | 0.276 | 0.280 |
| m | 4.725 | 4.750 | 0.186 | 0.187 |
| n | 1.8373 | 1.8627 | 0.07233 | 0.0733 |
| p | 0.498 | 0.523 | 0.0196 | 0.0206 |
| q | 0.508 | 0.762 | 0.020 | 0.030 |
Notes:
1. Mechanical and electrical reference surfaces.
2. Washers as required for Class 1 connectors.
3. Connection nuts with forward offset.

| Size | mm | in | ||
| min | max | min | max | |
| a | 4.800 | 5.060 | 0.189 | 0.199 |
| b | 1.370 | 1.630 | 0.054 | 0.064 |
| C | 2.650 | - | 0.104 | - |
| d | 0.000 | 0.0762 | 0.000 | 0.003 |
| e | 4.770 | 4.795 | 0.1878 | 0.1888 |
| f | 1.8373 | 1.8627 | 0.07233 | 0.07333 |
| g | - | R0.130 | - | R0.005 |
| h | 0.100 | 0.130 | 0.004 | 0.005 |
| j | 0.100 | 0.200 | 0.004 | 0.008 |
| k | 0.7909 | 0.8163 | 0.0311 | 0.0321 |
| l | 6.000 | - | 0.236 | - |
| m | 5.790 | 5.890 | 0.228 | 0.232 |
| n | 3.000 | 3.100 | 0.118 | 0.122 |
Notes:
The structure of the socket contact piece is arbitrary. When mating with pins with diameters of 0.498mm to 0.523mm, the dimensions should meet the reflection coefficient, mating characteristics and connector durability requirements.
KEEP IN TOUCH
* { margin: 0; padding: 0; box-sizing: border-box; } body { background: #f5faff; font-family: '...
READ MOREQuick Answer: What to Look for in a Hermetic Connector Manufacturer Choosing the right Hermetically Sealed Connector partner generally comes down to five practical checkpoints: gl...
READ MOREThe Direct Answer: What Engineers Should Verify Before Buying an RF Adapter Before selecting any RF Coaxial Adapter, engineers should confirm four values first: impedance match (t...
READ MOREBefore purchasing RF coaxial adapters, buyers must understand three non-negotiable fundamentals: connector type compatibility, impedance matching, and frequency range adequacy. Se...
READ MORERequest for a call today