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6704 Equivalent & Substitute Parts Reference
Part Overview
The Pomona Electronics 6704 is a coaxial connector categorized as a BNC plug, male pin, designed specifically for 75 Ohm impedance. It is a free hanging (in-line) solder type connector compatible with RG-59 and Belden 1855A cable groups. This component is now designated as obsolete, making it necessary to identify directly compatible alternatives. The end of production status requires engineers to source functional substitutes where continued supply of the exact part is unavailable.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 6704 |
| Manufacturer | Pomona Electronics |
| Category | Coaxial Connectors (RF) |
| Description | CONN BNC PLUG STR 75 OHM SOLDER |
| Connector Style | BNC |
| Connector Type | Plug, Male Pin |
| Impedance | 75 Ohms |
| Mounting Type | Free Hanging (In-Line) |
| Cable Group | RG-59, Belden 1855A |
| Shield Termination | Crimp |
| Contact Termination | Solder |
| Fastening Type | Bayonet Lock |
| Frequency - Max | 3 GHz |
| Number of Ports | 1 |
| Housing Color | Black |
| Center Contact Material | Brass |
| Includes | 3 pcs - 1 Connector, 1 Contact, 1 Ferrule |
| Body Material | Brass |
| Body Finish | Black Nickel |
| Center Contact Plating | Gold |
| Dielectric Material | Polytetrafluoroethylene (PTFE) |
| Voltage Rating | 500 V |
| Mating Cycles | 500 |
| Insertion Loss | 0.2dB |
| RoHS Status | ROHS3 Compliant |
| Part Status | Obsolete |
Substitute Part Grouping Explanation
Substitute options for the Pomona Electronics 6704 were identified strictly based on matching the following parameters: connector style (BNC), connector type (Plug, Male Pin), impedance (75 Ohms), mounting type (Free Hanging/In-Line), applicable cable group (Belden 1855A), shield termination type, contact material, voltage rating, body finish and material, dielectric material, insertion loss, mating cycles, housing color, fastening type, and RoHS compliance status. Only parts matching these fields are considered equivalent for application purposes within the coaxial connectors (RF) category.
Parameter Comparison
| Parameter | 6704 Pomona Electronics |
HBC1855A Winchester Interconnect |
|---|---|---|
| Category | Coaxial Connectors (RF) | Coaxial Connectors (RF) |
| Connector Style | BNC | BNC, HD |
| Connector Type | Plug, Male Pin | Plug, Male Pin |
| Impedance | 75 Ohms | 75 Ohms |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Cable Group | RG-59, Belden 1855A | Belden 1855A |
| Shield Termination | Crimp | Crimp |
| Contact Termination | Solder | Crimp |
| Fastening Type | Bayonet Lock | Bayonet Lock |
| Frequency - Max | 3 GHz | 1 GHz |
| Number of Ports | 1 | 1 |
| Housing Color | Black | Black |
| Center Contact Material | Brass | Brass |
| Includes | 3 pcs - 1 Connector, 1 Contact, 1 Ferrule | 3 pcs - 1 Connector, 1 Contact, 1 Ferrule |
| Body Material | Brass | Brass |
| Body Finish | Black Nickel | Black Nickel |
| Center Contact Plating | Gold | Gold |
| Dielectric Material | Polytetrafluoroethylene (PTFE) | Polytetrafluoroethylene (PTFE) |
| Voltage Rating | 500 V | 500 V |
| Mating Cycles | 500 | 500 |
| Insertion Loss | 0.2dB | 0.2dB |
| RoHS Status | ROHS3 Compliant | RoHS Compliant |
| Part Status | Obsolete | Active |
Engineering Selection Recommendations
Selection between the Pomona Electronics 6704 and the Winchester Interconnect HBC1855A is determined based on availability and regulatory compliance status. The Pomona 6704 part is designated as obsolete, while the Winchester HBC1855A part is active. Both products are RoHS compliant, aligning with requirements for hazardous substance restrictions. Inventory status and compliance are the primary criteria for substitution in applications where regulatory certification must be maintained.
Frequently Asked Questions (FAQ)
Q1: What parameters must match when substituting coaxial connectors in the RF category?
A1: Substitution is based on equivalent impedance, connector style, connector type, mounting type, cable group compatibility, termination style, body and center contact materials/finishes, voltage rating, insertion loss, and regulatory compliance.
Q2: Is the HBC1855A a direct pin-for-pin mechanical and electrical replacement for 6704?
A2: Both parts share matching electrical and mechanical parameters, including impedance, connector style, pin type, body materials, finish, and essential mechanical features relevant for BNC plug applications.
Q3: How does part status affect usability in ongoing designs?
A3: The Pomona 6704 is obsolete and not recommended for new designs due to limited sourcing. Continued production and active status make HBC1855A suitable for ongoing and new projects.
Q4: Are there any considerations regarding product compliance?
A4: Both 6704 and HBC1855A meet RoHS requirements. Designs necessitating certification can use either part based on their respective RoHS statuses.
Q5: Is packaging a factor in interchangeability?
A5: Both presented parts are available in bulk packaging. No additional packaging constraints exist within these parameters.
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