TE Connectivity High Speed Backplane Connectors 1857657-1

Body Features

• Primary Product Color : Natural
• Shield Material : Copper Alloy

Configuration Features

• Number of Columns : 12
• Number of Pairs : 48
• Number of Positions : 96
• Number of Rows : 8
• Number of Signal Positions : 96
• PCB Mount Orientation : Right Angle
• Pairs per Column : 8
• Stackable : Yes

Contact Features

• Contact Base Material : Copper Alloy
• Contact Current Rating (Max) (AMP) : .5
• Contact Shape & Form : Dual Beam
• Contact Type : Receptacle
• Contact Underplating Material : Nickel
• PCB Contact Termination Area Plating Material : Tin
• PCB Contact Termination Area Plating Material Finish : Matte
• PCB Contact Termination Area Plating Material Thickness : .5 - 2.5 MICM  [20 - 100 MICIN ]

Dimensions

• Connector Height : 12.51 MM  [.493 INCH ]
• Connector Length : 24.5 MM  [.965 INCH ]
• Connector Width : 17.3 MM  [.681 INCH ]
• PCB Hole Diameter : .4 MM  [.016 INCH ]
• PCB Thickness (Recommended) : 1.2 MM  [.047 INCH ]
• Row-to-Row Spacing : 1.25 MM  [.049 INCH ]

Electrical Characteristics

• Impedance (OHM) : 100
• Operating Voltage (VAC) : 30

Housing Features

• Centerline (Pitch) : 1.45 MM  [.057 INCH ]
• Housing Material : Liquid Crystal Polymer (LCP)

Industry Standards

• UL Flammability Rating : UL 94V-0

Mechanical Attachment

• Guide Hardware : Without
• Mating Alignment : With
• Mating Alignment Type : Polarization
• Mating Retention : Without
• PCB Mount Alignment : With
• PCB Mount Retention : With
• PCB Mount Retention Type : Action/Compliant Tail

Operation/Application

• Circuit Application : Signal
• Durability Rating (CYCLE) : 200

Packaging Features

• Packaging Method : Tray

Product Type Features

• Backplane Module Type : Center
• Connector & Contact Terminates To : Printed Circuit Board
• Connector System : Board-to-Board
• PCB Connector Type : PCB Mount Receptacle
• Shroud Style : Unshrouded
• Signal Arrangement : Differential

Signal Characteristics

• Data Rate (GBS) : 20
• Number of Differential Pairs per Column : 2

Termination Features

• Termination Method to PCB : Through Hole - Press-Fit
• Termination Post & Tail Length : 1.6 MM  [.063 INCH ]

Usage Conditions

• Operating Temperature Range : -55 - 105 DEGC  [-67 - 221 DEGF ]

Female Connector

Backplane Connectors

96 Pos 1.45mm RA Press Fit Thru-Hole Connector Product overview: 1857657-1 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 407-1857657-1 can be used for catalog matching and distributor lookup.