TE Connectivity Hard Metric Backplane Connectors 1857991-1

Body Features

• Primary Product Color : Gray

Configuration Features

• Backplane Architecture : Traditional Backplane
• Number of Columns : 11
• Number of Positions : 55
• Number of Rows : 5
• PCB Mount Orientation : Right Angle

Contact Features

• CompactPCI Designation : None
• Contact Base Material : Phosphor Bronze
• Contact Current Rating (Max) (AMP) : 1.5
• Contact Mating Area Plating Material : Gold (Au)
• Contact Mating Area Plating Material Thickness : .76 MICM  [30 MICIN ]
• Contact Underplating Material : Nickel

Housing Features

• Centerline (Pitch) : 2 MM  [.078 INCH ]
• Housing Material : Polyester GF

Industry Standards

• UL Flammability Rating : UL 94V-0

Mechanical Attachment

• Connector Mounting Type : Board Mount

Operation/Application

• Circuit Application : Signal

Packaging Features

• Packaging Method : Tube
• Packaging Quantity : 22

Product Type Features

• Connector & Contact Terminates To : Printed Circuit Board
• Connector System : Board-to-Board
• PCB Connector Type : PCB Mount Receptacle
• Sealable : No

Signal Characteristics

• Data Rate (GBS) : 1

Usage Conditions

• Operating Temperature Range : -55 - 125 DEGC  [-67 - 257 DEGF ]

"55 Position Receptacle, Female Sockets Connector 0.079"" (2.00mm) Through Hole, Right Angle"

2mm HM,5ROW,TYPE C-11,REC,EON,55P

Board to Board & Mezzanine Connectors

Conn Backplane F 55 POS 2mm Press Fit ST Thru-Hole Product overview: 1857991-1 from TE Connectivity is an Electronic Connector for board-to-board, wire-to-board, backplane, terminal, cable, and industrial interconnect applications. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include connector, interconnect, header, socket, terminal block, Electronic Connector, Specialized Backplane Connectors. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 407-1857991-1 can be used for catalog matching and distributor lookup.