Rosenberger 187657 MINI SMP Straight Plug PCB Equivalent & Substitute Parts

Part Overview

The Rosenberger 187657 is an active MINI SMP straight plug PCB connector designed for coaxial RF applications. This surface mount male pin connector operates at 50 ohms impedance with a maximum frequency rating of 65 GHz. The connector features solder termination for both contact and shield, full detent fastening, and gold plating on brass housing with beryllium copper center contacts.

Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain compatibility across manufacturing batches while preserving electrical and mechanical performance specifications.

Key Parameters

Parameter	Value
Connector Style	SMP, Mini
Connector Type	Plug, Male Pin
Impedance	50 Ohms
Mounting Type	Surface Mount
Contact Termination	Solder
Shield Termination	Solder
Frequency - Max	65 GHz
Operating Temperature Range	-55°C ~ 155°C
Voltage Rating	325 V
Fastening Type	Snap-On
Number of Ports	1
Mating Cycles	100
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of coaxial RF connectors in the MINI SMP category is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Connector style (SMP, Mini)
Connector type (Plug, Male Pin)
Impedance (50 Ohms)
Mounting type (Surface Mount)
Contact and shield termination method (Solder)
Frequency maximum rating (65 GHz)
Operating temperature range (-55°C ~ 155°C)
Voltage rating (325 V)
Fastening type (Snap-On)
Number of ports (1)
Mating cycles (100)
RoHS compliance status (ROHS3 Compliant)

The substitute part 18S107-40ML5 meets all mandatory matching parameters and is therefore classified as a parametric equivalent. Variations in center contact material and dielectric material do not preclude substitution when all electrical and mechanical parameters remain within specification.

Parameter Comparison

Parameter	Rosenberger 187657	Rosenberger 18S107-40ML5	Match Status
Manufacturer	Rosenberger	Rosenberger	Match
Category	Coaxial Connectors (RF)	Coaxial Connectors (RF)	Match
Connector Style	SMP, Mini	SMP, Mini	Match
Connector Type	Plug, Male Pin	Plug, Male Pin	Match
Contact Termination	Solder	Solder	Match
Shield Termination	Solder	Solder	Match
Impedance	50 Ohms	50 Ohms	Match
Mounting Type	Surface Mount	Surface Mount	Match
Fastening Type	Snap-On	Snap-On	Match
Frequency - Max	65 GHz	65 GHz	Match
Number of Ports	1	1	Match
Features	Full Detent	Full Detent	Match
Housing Color	Gold	Gold	Match
Body Material	Brass	Brass	Match
Body Finish	Gold	Gold	Match
Center Contact Plating	Gold	Gold	Match
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	Match
Voltage Rating	325 V	325 V	Match
Mating Cycles	100	100	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Center Contact Material	Beryllium Copper	Brass	Variation
Dielectric Material	Polyetheretherketone (PEEK)	Polytetrafluoroethylene (PTFE)	Variation

Engineering Selection Recommendations

Both the Rosenberger 187657 and Rosenberger 18S107-40ML5 are active products with ROHS3 compliance and identical electrical and mechanical specifications across all critical parameters. Selection between these parts is based on the following factors:

Rosenberger 187657 is the primary specification with beryllium copper center contacts and PEEK dielectric material. Current inventory is 739 pieces.

Rosenberger 18S107-40ML5 is a parametric equivalent with brass center contacts and PTFE dielectric material. Current inventory is 1444 pieces. This part carries the base product number 18S107 and offers higher stock availability.

Both connectors maintain 50 ohm impedance, support frequencies to 65 GHz, operate across -55°C to 155°C, and are rated for 325 V with 100 mating cycles. The material variations between center contact and dielectric do not alter the electrical performance specifications or mechanical compatibility for surface mount PCB applications with solder termination.

Frequently Asked Questions (FAQ)

Q: Can Rosenberger 18S107-40ML5 be used as a direct replacement for Rosenberger 187657?

A: Yes. Both connectors are parametric equivalents meeting identical specifications for impedance, frequency, temperature range, voltage rating, mounting type, and termination method. The center contact material (brass vs. beryllium copper) and dielectric material (PTFE vs. PEEK) variations do not affect compatibility in applications where the electrical and mechanical parameters are the primary selection criteria.

Q: What are the key differences between these two parts?

A: The primary differences are center contact material (beryllium copper in 187657 versus brass in 18S107-40ML5) and dielectric material (PEEK in 187657 versus PTFE in 18S107-40ML5). All other specifications including impedance, frequency rating, operating temperature, voltage rating, and physical mounting characteristics are identical.

Q: Are both parts suitable for high-frequency RF applications?

A: Yes. Both connectors are rated to 65 GHz maximum frequency and maintain 50 ohm impedance across their operating range, making them suitable for high-frequency RF applications within this specification envelope.

Q: What is the packaging format for these connectors?

A: Both parts are supplied in Tape & Reel (TR) packaging, suitable for automated surface mount assembly processes.

Q: Do both parts have the same moisture sensitivity level?

A: No. The Rosenberger 187657 has MSL 1 (Unlimited), while the Rosenberger 18S107-40ML5 is listed as Not Applicable. This difference does not affect substitution eligibility but should be considered in storage and handling procedures.

Q: Are both parts RoHS compliant?

A: Yes. Both connectors are ROHS3 compliant, meeting current environmental and regulatory requirements.

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