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Amphenol RF 31-5329-71RFX BNC Connector Equivalent & Substitute Parts
Part Overview
The Amphenol RF 31-5329-71RFX is an active BNC connector jack (female socket) rated for 75 ohms impedance, designed for through-hole PCB mounting with solder termination. This coaxial RF connector operates across a frequency range up to 4 GHz and is RoHS compliant. Substitute parts are identified to address inventory availability, alternative manufacturing sources, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter tolerances.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 31-5329-71RFX |
| Manufacturer | Amphenol RF |
| Connector Style | BNC |
| Connector Type | Jack, Female Socket |
| Impedance | 75 Ohms |
| Mounting Type | Through Hole |
| Contact Termination | Solder |
| Shield Termination | Solder |
| Fastening Type | Bayonet Lock |
| Frequency - Max | 4 GHz |
| Number of Ports | 1 |
| Voltage Rating | 500 V |
| Mating Cycles | 500 |
| Operating Temperature | -65°C ~ 165°C |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 31-5329-71RFX are categorized based on impedance matching and electrical compatibility. The primary substitution criterion is impedance rating, as this parameter determines signal integrity and system performance in RF applications.
Impedance-Matched Substitutes (75 Ohms): Parts maintaining the 75-ohm impedance specification are direct functional equivalents. These include the Amphenol RF 031-5329-72RFX and Rosenberger 71K101-400A5. Both preserve the electrical characteristics required for 75-ohm system applications.
Cross-Impedance Alternatives (50 Ohms): Parts rated for 50-ohm impedance represent a different impedance class. These include Amphenol RF 031-5329-51RFX and 031-5329-52RFX, as well as multiple TE Connectivity AMP Connectors models (1-1337445-0, 227699-1, 5221123-2, 5222420-1, 5413969-2, and 6274315-1). These are suitable only for applications designed around 50-ohm systems and are not interchangeable with 75-ohm specifications.
Key Parameters Determining Substitution:
- Impedance rating (75 Ohms or 50 Ohms)
- Connector style (BNC)
- Connector type (Jack, Female Socket)
- Mounting type (Through Hole)
- Termination method (Solder)
- Frequency capability (4 GHz maximum)
- Voltage rating (500 V)
- Mating cycles (500)
Parameter Comparison
| Part Number | Manufacturer | Impedance | Connector Type | Mounting Type | Frequency Max | Voltage Rating | Operating Temperature | RoHS Status | Mating Cycles |
|---|---|---|---|---|---|---|---|---|---|
| 31-5329-71RFX | Amphenol RF | 75 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -65°C ~ 165°C | RoHS Compliant | 500 |
| 031-5329-72RFX | Amphenol RF | 75 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | Not Specified | ROHS3 Compliant | 500 |
| 71K101-400A5 | Rosenberger | 75 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 400 V | -65°C ~ 165°C | RoHS Compliant | 500 |
| 031-5329-51RFX | Amphenol RF | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -20°C ~ 165°C | ROHS3 Compliant | 500 |
| 031-5329-52RFX | Amphenol RF | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | Not Specified | ROHS3 Compliant | 500 |
| 1-1337445-0 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -65°C ~ 165°C | ROHS3 Compliant | 500 |
| 227699-1 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -55°C ~ 85°C | RoHS Compliant | 500 |
| 5221123-2 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -55°C ~ 85°C | ROHS3 Compliant | 500 |
| 5222420-1 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -55°C ~ 85°C | RoHS Compliant | 500 |
| 5413969-2 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -55°C ~ 85°C | ROHS3 Compliant | 500 |
| 6274315-1 | TE Connectivity AMP Connectors | 50 Ohms | Jack, Female Socket | Through Hole | 4 GHz | 500 V | -55°C ~ 85°C | ROHS3 Compliant | 500 |
Engineering Selection Recommendations
For 75-Ohm System Applications:
The Amphenol RF 031-5329-72RFX serves as the primary substitute for the 31-5329-71RFX, maintaining identical impedance, connector style, mounting configuration, and frequency capability. Both parts are ROHS compliant and support 500 mating cycles at 500 V. The 031-5329-72RFX is available in bulk packaging with 1,395 units in stock.
The Rosenberger 71K101-400A5 is an alternative 75-ohm BNC jack suitable for applications where the lower voltage rating of 400 V is acceptable. This part maintains the operating temperature range of -65°C to 165°C and is RoHS compliant. It is available with 1,209 units in stock.
For 50-Ohm System Applications:
When system impedance is 50 ohms, the Amphenol RF 031-5329-51RFX and 031-5329-52RFX are direct substitutes. Both maintain 4 GHz frequency capability, 500 V voltage rating, and 500 mating cycles. The 031-5329-51RFX supports an operating temperature range of -20°C to 165°C and is ROHS3 compliant with 2,181 units in stock. The 031-5329-52RFX is ROHS3 compliant with 2,854 units in stock.
TE Connectivity AMP Connectors 50-ohm options include 1-1337445-0 (2,400 units), 227699-1 (923 units), 5221123-2 (3,397 units), 5222420-1 (1,520 units), 5413969-2 (5,912 units), and 6274315-1 (803 units). All support 4 GHz frequency and 500 V voltage rating. Operating temperature ranges vary between -55°C to 85°C and -65°C to 165°C depending on the specific model. All are ROHS compliant or ROHS3 compliant.
Compliance Considerations:
All listed substitutes maintain RoHS or ROHS3 compliance status. Parts designated ROHS3 compliant meet the most current regulatory requirements. Moisture sensitivity level remains at MSL 1 (Unlimited) across all options, indicating no special moisture handling requirements during storage or assembly.
Frequently Asked Questions (FAQ)
Q: Can I use a 50-ohm BNC connector in place of the 75-ohm 31-5329-71RFX?
A: No. Impedance is a critical electrical parameter in RF systems. Using a 50-ohm connector in a 75-ohm system will cause signal reflections, increased insertion loss, and system performance degradation. Impedance must match the application specification.
Q: What is the difference between the 31-5329-71RFX and the 031-5329-72RFX?
A: Both are 75-ohm BNC jacks with identical electrical specifications, mounting type, and frequency capability. The primary difference is the center contact plating: the 31-5329-71RFX uses silver plating, while the 031-5329-72RFX uses gold plating. Both are suitable for the same applications.
Q: Are all substitute parts available in the same packaging?
A: No. The main part 31-5329-71RFX is listed with packaging designation "-" (not specified). Substitute parts are available in bulk packaging. Confirm packaging requirements with your procurement specifications before selection.
Q: What is the significance of the operating temperature range difference between parts?
A: Operating temperature range defines the environmental conditions under which the connector maintains specified electrical performance. The 31-5329-71RFX operates from -65°C to 165°C. Some 50-ohm substitutes operate only from -55°C to 85°C. Select a part whose temperature range matches or exceeds your application requirements.
Q: Do all substitute parts have the same voltage rating?
A: Most substitutes are rated at 500 V, matching the main part. The Rosenberger 71K101-400A5 is rated at 400 V. Ensure the selected part meets or exceeds your application voltage requirements.
Q: What does ROHS3 compliance mean compared to RoHS compliance?
A: ROHS3 represents compliance with the most current Restriction of Hazardous Substances directive. Both RoHS and ROHS3 compliant parts meet regulatory requirements for hazardous substance restrictions. ROHS3 indicates compliance with the latest regulatory updates.
Q: Can I substitute based on mating cycle rating?
A: All listed parts support 500 mating cycles. This parameter is consistent across all options and does not serve as a differentiation criterion for substitution.
Q: What role does insertion loss play in selecting a substitute?
A: The main part 31-5329-71RFX specifies 0.2 dB insertion loss. Most substitute parts do not provide insertion loss specifications in the available data. When insertion loss is critical to your application, contact the manufacturer for detailed specifications before finalizing part selection.
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