RF55-27A-T-02-50-A-SH Equivalent & Substitute Parts

Part Overview

The RF55-27A-T-02-50-A-SH is an SMB Fakra connector plug manufactured by Adam Tech, designed for free hanging (in-line) crimp termination applications. This male pin connector operates at 50 Ohms impedance with a maximum frequency rating of 4 GHz and is suitable for RG-174 and RG-316 cable groups. The part is currently active in production with 797 units in stock. Substitute parts may be required due to inventory constraints, supply chain considerations, or specific design revision requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Style	SMB, Fakra
Connector Type	Plug, Male Pin
Impedance	50 Ohms
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Shield Termination	Crimp
Cable Group	RG-174, RG-316
Frequency - Max	4 GHz
Operating Temperature Range	-40°C to 85°C
Housing Color	Black
Center Contact Material	Brass
Body Material	Brass
Body Finish	Nickel
Center Contact Plating	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)
Fastening Type	Locking Ramp
Features	Code A
Number of Ports	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

The RF55-31A-T-02-50-X-SH qualifies as a parametric equivalent to the RF55-27A-T-02-50-A-SH based on the following critical substitution parameters:

Connector Style & Type: Both are SMB Fakra connector plugs with male pin configuration
Electrical Specifications: Identical 50 Ohms impedance and 4 GHz maximum frequency rating
Termination Method: Both utilize crimp contact and shield termination
Mounting Configuration: Both are free hanging (in-line) designs
Cable Compatibility: Both support RG-174 and RG-316 cable groups
Material & Finish Specifications: Identical brass body with nickel finish, gold-plated center contact, and PTFE dielectric
Environmental & Compliance: Both operate across -40°C to 85°C temperature range with ROHS3 compliance and REACH unaffected status
Fastening & Features: Both employ locking ramp fastening with Code A features

The substitution is based on matching all critical electrical, mechanical, and environmental parameters that determine functional compatibility in RF applications.

Parameter Comparison

Parameter	RF55-27A-T-02-50-A-SH	RF55-31A-T-02-50-X-SH
Manufacturer	Adam Tech	Adam Tech
Category	Coaxial Connectors (RF)	Coaxial Connectors (RF)
Connector Style	SMB, Fakra	SMB, Fakra
Connector Type	Plug, Male Pin	Plug, Male Pin
Impedance	50 Ohms	50 Ohms
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp
Shield Termination	Crimp	Crimp
Cable Group	RG-174, RG-316	RG-174, RG-316
Frequency - Max	4 GHz	4 GHz
Operating Temperature	-40°C to 85°C	-40°C to 85°C
Housing Color	Black	Black
Center Contact Material	Brass	Brass
Body Material	Brass	Brass
Body Finish	Nickel	Nickel
Center Contact Plating	Gold	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)	Polytetrafluoroethylene (PTFE)
Fastening Type	Locking Ramp	Locking Ramp
Features	Code A	Code A
Number of Ports	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active
Inventory	797 Pcs	986 Pcs

Engineering Selection Recommendations

Both the RF55-27A-T-02-50-A-SH and RF55-31A-T-02-50-X-SH are active production parts from Adam Tech with identical electrical and mechanical specifications. Selection between these parts should be based on:

Inventory Availability: The RF55-31A-T-02-50-X-SH offers higher stock levels (986 units versus 797 units), providing improved supply chain flexibility
Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental regulations
Design Revision Requirements: The different base product numbers (RF55-27 versus RF55-31) may indicate design revisions; consult design documentation to confirm compatibility with your specific application revision level

No electrical or mechanical performance differences exist between these parts based on provided specifications.

Frequently Asked Questions (FAQ)

Q: Are RF55-27A-T-02-50-A-SH and RF55-31A-T-02-50-X-SH electrically interchangeable?

A: Yes. Both connectors operate at 50 Ohms impedance with identical frequency response (4 GHz maximum), termination methods (crimp), and material specifications. They are electrically equivalent for RF applications.

Q: Can these connectors be used with the same cable types?

A: Yes. Both connectors support RG-174 and RG-316 cable groups with identical crimp termination specifications.

Q: What is the difference between these part numbers?

A: The parts differ only in base product number designation (RF55-27 versus RF55-31) and inventory levels. All electrical, mechanical, and environmental parameters are identical.

Q: Are both parts compliant with current regulations?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the operating temperature range for these connectors?

A: Both connectors operate across -40°C to 85°C, suitable for industrial and commercial RF applications.

Q: Do these connectors require any special handling?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control measures are required during storage or handling.

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