SMP Connector Series
The SMP interface is a subminiature interface in the same scale as MMCX connectors but offers a frequency range of DC to 26.5 GHz. It is commonly used in miniaturized high frequency coaxial modules and is offered in both push-on and snap-on mating styles.
The interface is an excellent choice for PC board to board interconnects. For these applications, the interface series offers an interesting solution by utilizing a male connector on each of the PC boards and a female-to-female adapter mounted in between to complete the connection. The female adapter is often called a bullet and is necessary to provide a flexible link between the male connectors. This flexible link allows .020 inches of radial float and .010 inches of axial float. Typically, one male connector will be specified as a snap on interface and the other as a push on. This ensures that the bullet adapter remains fixed in the same male connector if the PC boards are separated. The bullets are available in multiple lengths to allow for different board spacing.
In its snap-on configuration, the SMP interface is available in two levels of detent each with different mate and de-mate forces. The two levels are full detent and limited detent. In board mount applications, the lower level of detent (limited detent) is typically selected, as it is only required to retain the bullet. Full detent is often used for discreet cable connections where higher forces are desirable.
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Features & Benefits
- RF performance DC to 40 GHz
- Designed to accommodate both radial and axial misalignment
- Push-on and snap-on mating styles for quick installation
Applications
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SMP Specifications
Electrical |
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| Impedance | 50 Ω |
| Frequency Range | DC - 26.5 GHz extended performance to 40 GHz |
| VSWR | 1.15 @ 1 - 26.5 GHz 1.5 @ 1 - 40 GHz |
| Voltage Rating (at sea level) | ≥500 Vrms (depending on cable) |
| Contact Resistance | center contact: ≤ 6 mΩ outer contact: ≤ 2 mΩ |
| Insulation Resistance | 5,000 MΩ minimum |
Mechanical |
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| Mating | MIL-STD-348 |
| Engagement Force | ≤ 9.0 lbs (40N) |
| Disengagement Force | ≥ 0.5 lbs (2N) |
| Durability (matings) | 500 cycles minimum |
Environmental |
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| Temperature Range | -65°C to + 165°C |
| Thermal Shock | MIL-STD-202, method 107, cond. C |
| Vibration | MIL-STD-202, method 204, cond. B |
| Mechanical Shock | MIL-STD-202, method 213, cond. B |
| Humidity | MIL-STD-202, method 106, cond. D |
Material |
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| Body and Outer Contacts | Brass, gold plated |
| Male Contact | Brass, gold plated |
| Female Contact | Beryllium copper center, gold plated |
| Crimp Ferrule | Copper |
| Insulator | PTFE or PEEK |
Note: These characteristics are typical but may not apply to all connectors.
