McMurdo 0.100" Modular Connectors

McMurdo EdgeCard connectorsMcMurdo Modular 0.100" edgecard connectors. Any number of contacts from 5 to 85 single sided, or 10 to 170 in dual row. 
These 2.54mm pitch modular connectors were originally designed to match the requirements of BS9526-N0001, N0002, N0003 and BT D2552.

Overview

The connector body is a green thermoplastic material, rated UL94 V-0 flammability.McMurdo Modular edgecard

The McMurdo contacts can be fixed or replaceable, cantilever or bifurcated types designed for low insertion force and even pad pressure. Available from 5 to 85 way single or 10 to 170 way double sided the contact options include dip solder, solder eyelet and wire wrap; all in acid gold plated copper alloy.

These connectors are cut to the number of required contacts from an 85 way moulding and so have a continuous daughter board card slot. To prevent the daughter card moving axially out of the card slot the connectors can be mounted to the mother board using metal or plastic end feet. When using plastic fittings a pair of cavities must be left empty at opposing ends of the body for them to clip in to.

Polarising/location keys are available and can be purchased loose or factory fitted in specified positions.

These connectors prove reliable replacements in fit, form and function to the sadly lamented Thermodata Components 'Modulo' and Viking Connectors UK 'VMA Series'  of 2.54mm pitch Modular connectors and are intermateable with other similar pitch connectors and circuit boards..

 

Key Features

Features

Blue Bullet Cantilever or Bifurcated full-bellows contacts ~ 2.54mm (0.100") pitch (Bifurcated contacts allow secondary current paths for greater electrical reliability) fixed or replaceable
Blue Bullet 5/10 to 85/170 position edge card connectors
Blue Bullet Single or double sided card edge connectors. Single sided with/without "backing" contacts
Blue Bullet A variety of PCB edge contacts including discrete wire ears, straight PC and wire wrap
Blue Bullet Choice of contact loading ~ part loading if required
Blue Bullet Fully plated contacts 
Blue Bullet Metal or plastic end feet
Blue Bullet Sutable for vapour phase soldering
Blue Bullet Separately ordered metal and plastic polarising keys
Blue Bullet 'Custom' PCB edgecard connector production

Specifications

Electrical
Blue Bullet

Contact Current rating: 4.5A Maximum (25 degrees C)

All contacts simultaneously 4A

Blue Bullet  Working Voltage: 350V DC or AC Peak
Blue Bullet

Dielectric withstand voltage: 1050V DC

Blue Bullet  Contact resistance initially: 10 milli Ohm Sign Max 
   Contact resistance after conditioning 15 milli Ohm Sign Max 
Blue Bullet  Voltage drop 30 milli volt @ rated current
Blue Bullet

Insulation Resistance initially: 1000 Mega Ohm min.

   Insulation Resistance after conditioning: 100 Mega Ohm min.
 
Mechanical
Blue Bullet  Contact forces: (per MIL-C-21097C using a 1.58mm steel test blade).
Blue Bullet  Board insertion/withdrawal force:- 2.2 N max/0.2 N min per contact pair.
Blue Bullet  Contact holding force: 0.15 N min
Blue Bullet  Mechanical operations: - 100 ("Q" finish) / 250 ("N" finish)
 
Environment
Blue Bullet

Working temperature: 

   Glass filled polyester: -55 to +125 C
   
Materials
Blue Bullet

Mouldings: 

  Green glass filled Polyester, flammability rated UL94 V-O
Blue Bullet

Contacts: Copper alloy plated with hard acid gold

Blue Bullet

Contact plating: 

   Generally per MIL-G-45204 or equivalent
Blue Bullet

Solderability: Hand to Vapour Phase soldering

 

Applications

These McMurdo "modular" connectors are very versatile with a choice of contact termination styles to give the user freedom of choice. Except where otherwise stated in the data sheet, the modular connector is available in up to 85 ways single or double sided and the body moulding can be cut to any length. Contacts can be inserted only where they are needed to create custom connector layouts. Because of this, the McMurdo Edgecard can be used in just about any re-fit or replace scenario requiring an 0.100" pitch in computer, test and instrumentation, control, broadcast sound desk, legacy arcade game, telecom etc. applications.

Downloads

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1

PCB Edgecard Connectors

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Sullins Connector Solutions Edgecard Catalogue 2012

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EDAC Cardedge Prochure

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