Memory Sockets

Memory sockets are a part of printed circuit boards, designed for use in personal computers, servers and workstations. The module is mounted on the circuit board using a module socket. DIMMs are the dominant form of memory used in computing.


What are DIMMs?


DIMMs are memory modules that are composed of a series of dynamic, random-access memory (RAM) integrated circuits. They have two separate electrical contacts on either side and a 64-bit path.


Types of DIMM sockets


DIMM sockets have to conform to the needs of the system that they are used in. Different types of socket may vary according to the number of pins. This depends on the type of RAM being supported by the DIMM, from DDR to DDR4. Generally, the more pins or contacts, the higher the type of RAM supported. For example, a 240-pin DIMM might be used for DDR2 SDRAM, while a 288-pin DIM might be used for DDR4 SDRAM.


DIMM sockets can vary based on orientation this can be:



  • Angled

  • Horizontal

  • Vertical


What are SIMMs?


SIMM (Single In-Line Memory Module) sockets are computer memory expansion holders that connect memory modules to circuit boards. These sockets have single row pins which connect to the system board vertically or at predetermined angles. The sockets are easily inserted or extracted because they are not soldered onto the circuit board.


SIMM sockets have positive polarisation to prevent the memory modules from being inserted incorrectly. Contacts (pins) on the SIMM sockets have anti-overstress features and are resistant to high temperatures.


What are SIMM sockets used for?


The main benefits of using SIMM sockets are their space-saving capabilities and simple installation mechanisms, making them suitable for smaller circuit board designs used by electronic hobbyists. SIMM sockets are legacy components, mainly used in older module computers, PCBs and motherboards.


Types of SIMM sockets


SIMM sockets come in various sizes and are distinguished by the number of pin slots:



  • 30-pin SIMM sockets are shorter than standard sockets and can be used in legacy type laptops.

  • 64- and 72-pin SIMM sockets are used in desktop motherboards because they can hold larger memory modules.

...
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Description Price Gender Memory Socket Type Body Orientation Contact Material Contact Plating Number of Contacts Pitch Mounting Type Termination Method Housing Material SDRAM Type Latching Row Spacing Maximum Contact Resistance
RS Stock No. 718-4748
Mfr. Part No.1932000-1
MYR13.80
Each
units
Female DIMM Socket Straight Copper Alloy Gold 240 1.0mm Through Hole Solder Nylon DDR3 Yes 1.9mm -
RS Stock No. 164-0254
Mfr. Part No.2013310-1
MYR21.892
Each (In a Tray of 20)
units
Female DIMM Socket Straight Copper Alloy Gold over Nickel 204 0.6mm Surface Mount Solder Thermoplastic DDR3 - - -
RS Stock No. 896-2287
Mfr. Part No.151080-0101
BrandMolex
MYR138.58
Each
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel (Mating), Tin over Nickel (Termination) 288 0.85mm PCB Mount Through Hole Glass Filled Polyamide DDR4 Yes 1.58mm -
RS Stock No. 161-5604
Mfr. Part No.440360-2
MYR19.382
Each (In a Tray of 600)
units
Female DIMM Socket Right Angle Phosphor Bronze Gold over Nickel 124 0.8mm Surface Mount Solder Thermoplastic - - - -
RS Stock No. 164-0073
Mfr. Part No.5822021-4
MYR17.157
Each (In a Box of 315)
units
Female SIMM Socket Straight Phosphor Bronze Tin over Nickel 72 2.54mm Through Hole Solder Liquid Crystal Polymer - - - -
New
RS Stock No. 217-5488
Mfr. Part No.6-390322-1
MYR27.397
Each (On a Reel of 140)
units
- - Right Angle Phosphor Bronze Gold 144 0.8mm Surface Mount - - - - - -
RS Stock No. 185-5877
Mfr. Part No.2309408-1
MYR7.004
Each (On a Tape of 5)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 185-5345
Mfr. Part No.2309410-1
MYR5.166
Each (On a Reel of 400)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 164-4213
Mfr. Part No.5821997-3
MYR33.17
Each (In a Box of 315)
units
Female SIMM Socket Straight Phosphor Bronze Gold 72 1.27mm Through Hole Solder Liquid Crystal Polymer - Yes - -
New
RS Stock No. 217-5355
Mfr. Part No.1-1932000-1
MYR20.205
Each (In a Pack of 2)
units
- - Vertical Copper Alloy Gold 240 1mm Through Hole - - - - - -
RS Stock No. 185-5343
Mfr. Part No.2309408-1
MYR4.946
Each (On a Reel of 450)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 185-5882
Mfr. Part No.2309410-1
MYR7.36
Each (On a Tape of 5)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 745-5047
Mfr. Part No.5821997-3
MYR56.62
Each
units
Female SIMM Socket Straight Phosphor Bronze Gold 72 1.27mm Through Hole Solder Liquid Crystal Polymer - Yes - -
New
RS Stock No. 217-5432
Mfr. Part No.2040910-1
MYR28.31
Each
units
- - Vertical Copper Alloy Gold 200 0.6mm Surface Mount - - - - - -
RS Stock No. 164-8363
Mfr. Part No.2-2013310-1
MYR14.919
Each (On a Tape of 150)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash 204 0.6mm Surface Mount Solder Thermoplastic DDR3 Yes 8.2mm -
RS Stock No. 542-2556
Mfr. Part No.390113-1
MYR56.52
Each
units
Female DIMM Socket Right Angle Phosphor Bronze Gold over Nickel 144 0.8mm - Solder Nylon - - - -
RS Stock No. 185-5344
Mfr. Part No.2309409-1
MYR4.253
Each (On a Reel of 400)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 185-5349
Mfr. Part No.2309412-1
MYR5.275
Each (On a Reel of 250)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash, Nickel Plated (Under Plated) 260 0.5mm Surface Mount Solder Thermoplastic SO Yes 8.2mm 50.0mΩ
RS Stock No. 161-7965
Mfr. Part No.151080-0101
BrandMolex
MYR119.878
Each (In a Tray of 12)
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel (Mating), Tin over Nickel (Termination) 288 0.85mm PCB Mount Through Hole Glass Filled Polyamide DDR4 Yes 1.58mm -
RS Stock No. 173-4043
Mfr. Part No.10033853-052FSLF
MYR82.01
Each (In a Tray of 20)
units
Female DIMM Socket Right Angle Copper Alloy Gold 200 0.6mm Surface Mount Solder Liquid Crystal Polymer DDR2 - 6.2mm 30.0mΩ