PRF18-J-C-EP-047D-SS-B Equivalent & Substitute Parts

Part Overview

The PRF18-J-C-EP-047D-SS-B is a 1.85mm coaxial connector jack manufactured by Samtec Inc., designed for RF applications requiring 50 Ohm impedance. This female socket connector features solder termination and free hanging (in-line) mounting, supporting frequencies up to 65 GHz. The part is currently in active production status with 1,103 units in stock. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across the connector interface, enabling direct replacement in RF cable assemblies and test equipment applications.

Key Parameters

Parameter	Value
Connector Style	1.85mm
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Contact Termination	Solder
Shield Termination	Clamp
Mounting Type	Free Hanging (In-Line)
Cable Group	0.047" Semi Rigid
Fastening Type	Threaded
Frequency - Max	65 GHz
Center Contact Material	Beryllium Copper
Body Material	Stainless Steel
Center Contact Plating	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the PRF18-J-C-EP-047D-SS-B are identified based on strict equivalence of the following critical parameters:

Electrical Parameters:

Connector style: 1.85mm
Impedance: 50 Ohms
Frequency maximum: 65 GHz
Dielectric material compatibility

Mechanical Parameters:

Connector type: Jack, Female Socket
Contact termination: Solder
Shield termination: Clamp
Mounting type: Free Hanging (In-Line)
Cable group: 0.047" Semi Rigid
Fastening type: Threaded
Body material: Stainless Steel
Center contact material: Beryllium Copper
Center contact plating: Gold

Substitution is valid when all parameters listed above remain identical between the main part and the substitute part. Variations in dielectric material (PTFE versus PEI) are permitted when both materials maintain the specified electrical performance characteristics within the 65 GHz frequency range.

Parameter Comparison

Parameter	PRF18-J-C-EP-047D-SS-B	PRF18-J-C-EP-047A-SS	PRF18-J-C-EP-047D-SS
Manufacturer	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Style	1.85mm	1.85mm	1.85mm
Connector Type	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket
Contact Termination	Solder	Solder	Solder
Shield Termination	Clamp	Clamp	Clamp
Impedance	50 Ohms	50 Ohms	50 Ohms
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Group	0.047" Semi Rigid	0.047" Semi Rigid	0.047" Semi Rigid
Fastening Type	Threaded	Threaded	Threaded
Frequency - Max	65 GHz	65 GHz	65 GHz
Center Contact Material	Beryllium Copper	Beryllium Copper	Beryllium Copper
Body Material	Stainless Steel	Stainless Steel	Stainless Steel
Center Contact Plating	Gold	Gold	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)	Polytetrafluoroethylene (PTFE)	Polyetherimide (PEI)
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory (Pcs)	1,103	695	966

Engineering Selection Recommendations

PRF18-J-C-EP-047A-SS is a direct parametric equivalent to PRF18-J-C-EP-047D-SS-B. All electrical and mechanical parameters are identical, including dielectric material (PTFE), impedance (50 Ohms), frequency rating (65 GHz), and connector geometry. Both parts maintain ROHS3 compliance and are manufactured by Samtec Inc. This part is suitable for direct substitution in applications where the original part number is unavailable.

PRF18-J-C-EP-047D-SS is functionally equivalent with one material variation: the dielectric material is specified as Polyetherimide (PEI) instead of PTFE. All other electrical parameters, mechanical dimensions, impedance characteristics, and frequency performance remain identical. This part is suitable for substitution in applications where PEI dielectric material is acceptable. Both parts maintain ROHS3 compliance and active production status.

Selection between substitute parts should be based on inventory availability and material specification requirements for the specific application. All three parts are manufactured by Samtec Inc. and maintain identical RF performance characteristics within the 65 GHz frequency range.

Frequently Asked Questions (FAQ)

Q: Can PRF18-J-C-EP-047A-SS be used as a direct replacement for PRF18-J-C-EP-047D-SS-B?

A: Yes. PRF18-J-C-EP-047A-SS is a parametric equivalent with identical electrical and mechanical specifications, including connector style, impedance, frequency rating, termination type, and dielectric material. Direct substitution is valid for RF cable assemblies and test equipment applications.

Q: What is the difference between PRF18-J-C-EP-047D-SS-B and PRF18-J-C-EP-047D-SS?

A: The primary difference is the dielectric material. PRF18-J-C-EP-047D-SS-B uses PTFE, while PRF18-J-C-EP-047D-SS uses PEI. All other parameters, including impedance (50 Ohms), frequency rating (65 GHz), connector type, and termination method, are identical. Both materials maintain the specified electrical performance within the operating frequency range.

Q: Are all three parts compatible with 0.047" semi-rigid cable?

A: Yes. All three parts are specified for 0.047" semi-rigid cable group and feature identical mechanical interfaces, including threaded fastening and clamp shield termination.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. PRF18-J-C-EP-047A-SS and PRF18-J-C-EP-047D-SS both maintain ROHS3 compliance, matching the compliance status of PRF18-J-C-EP-047D-SS-B.

Q: What is the maximum frequency rating for these connectors?

A: All three parts are rated for 65 GHz maximum frequency, supporting high-frequency RF applications including millimeter-wave systems.

Q: Can these connectors be used interchangeably in test equipment?

A: Yes, provided the application does not have specific material requirements for the dielectric. The identical 50 Ohm impedance, connector geometry, and frequency rating ensure electrical compatibility across all three part numbers.

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