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

Part Overview

The RF55-27H-T-02-50-A-SH is an SMB Fakra connector plug manufactured by Adam Tech, designed for coaxial RF applications requiring 50-ohm impedance. This male pin connector features crimp termination for both contact and shield, supporting RG-174 and RG-316 cable groups with a maximum operating frequency of 4 GHz. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design revisions, or supply chain considerations.

Key Parameters

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

Substitute Part Grouping Explanation

The RF55-31H-T-02-50-X-SH qualifies as a parametric equivalent to the RF55-27H-T-02-50-A-SH based on identical electrical and mechanical specifications. Both parts share the following critical substitution parameters:

Connector style and type (SMB, Fakra plug, male pin)
Impedance rating (50 ohms)
Termination method (crimp for both contact and shield)
Mounting configuration (free hanging, in-line)
Compatible cable groups (RG-174, RG-316)
Maximum frequency (4 GHz)
Operating temperature range (-40°C to 85°C)
Material composition and finishes (brass body with nickel finish, gold-plated center contact, PTFE dielectric)
Regulatory compliance (ROHS3, REACH unaffected)
Fastening type (locking ramp)

The primary difference between these parts lies in the base product number designation (RF55-27 versus RF55-31), which reflects manufacturing or design revision variations that do not affect functional equivalency within the specified parameter set.

Parameter Comparison

Parameter	RF55-27H-T-02-50-A-SH	RF55-31H-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
Contact Termination	Crimp	Crimp
Shield Termination	Crimp	Crimp
Impedance	50 Ohms	50 Ohms
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Group	RG-174, RG-316	RG-174, RG-316
Fastening Type	Locking Ramp	Locking Ramp
Frequency - Max	4 GHz	4 GHz
Number of Ports	1	1
Features	Code H	Code H
Housing Color	Violet	Violet
Center Contact Material	Brass	Brass
Body Material	Brass	Brass
Body Finish	Nickel	Nickel
Center Contact Plating	Gold	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)	Polytetrafluoroethylene (PTFE)
Operating Temperature	-40°C to 85°C	-40°C to 85°C
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8536.69.4010	8536.69.4010

Engineering Selection Recommendations

Both RF55-27H-T-02-50-A-SH and RF55-31H-T-02-50-X-SH are active production parts with identical compliance certifications. Selection between these parts should be based on availability and supply chain requirements. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future applications. The interchangeability of these connectors is supported by their complete parameter equivalency across all electrical, mechanical, and environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can RF55-31H-T-02-50-X-SH be used as a direct replacement for RF55-27H-T-02-50-A-SH?

A: Yes. Both connectors are parametrically equivalent across all specified electrical and mechanical parameters, including impedance, termination method, frequency rating, temperature range, and material composition. They are functionally interchangeable for applications requiring SMB Fakra male pin connectors with 50-ohm impedance.

Q: Are there any differences in cable compatibility between these two parts?

A: No. Both parts support identical cable groups: RG-174 and RG-316. Cable selection and termination procedures remain unchanged when substituting between these connectors.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both RF55-27H-T-02-50-A-SH and RF55-31H-T-02-50-X-SH are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding.

Q: What is the difference between the base product numbers RF55-27 and RF55-31?

A: The base product number variation reflects manufacturing or design revision designations that do not affect functional performance or compatibility within the specified parameter set.

Q: Are the physical dimensions and mating characteristics identical?

A: Yes. Both connectors feature identical connector styles (SMB, Fakra), mounting types (free hanging, in-line), fastening mechanisms (locking ramp), and housing color (violet), ensuring mechanical compatibility in existing designs.

Q: What is the moisture sensitivity level for both parts?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.

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