50 Ohm SMA Female to 75 Ohm F Female Impedance Matching Pad DC–3 GHz
- For low-reflection 50 to 75 ohm transitions
- In-line format for quick system adaptation
- Helps reduce mismatch at RF test ports
- Well suited to CATV, SAT-IF, and lab setups
- Supports broadband matching through 3 GHz
Engineering Note
This 50 ohm SMA female to 75 ohm F female impedance matching pad is an in-line converter for broadband transitions between 50 ohm and 75 ohm systems. It covers DC–3 GHz, maintains ≤1.25 VSWR, and provides 5.7 ±0.5 dB attenuation. The structure is suited to applications where a compact female-to-female adapter is needed to control mismatch and reduce reflections between instrument, CATV, SAT-IF, or mixed-impedance RF paths.
Technical Specifications
| Product Type | In-line impedance matching pad |
|---|---|
| Interface A | 50 Ω SMA female |
| Interface B | 75 Ω F female |
| Frequency Range | DC – 3 GHz |
| VSWR | ≤1.25 |
| Typical VSWR | 1.25 typ. |
| Attenuation | 5.7 ±0.5 dB |
| Input Power | 2 W avg @ +25 °C |
| Temperature Range | –40 °C to +125 °C |
| Durability | 500 cycles min |
| SMA Shell | 303 stainless steel, passivated |
| F Body | Brass, nickel plated |
| Contacts | Gold-plated BeCu |
| Dielectric | PTFE |
Target Applications
CATV Signal Paths
Used where 50 ohm RF equipment needs to interface with 75 ohm CATV hardware while controlling mismatch and reflections.
SAT-IF Interconnects
Suitable for satellite intermediate-frequency paths that require compact 50-to-75 ohm conversion in-line.
Laboratory Adaptation
Useful in lab setups where mixed-impedance ports need a compact female-to-female transition with predictable attenuation.
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