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. 542-2685
Mfr. Part No.1473005-4
SGD8.04
Each
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 200 0.6mm Surface Mount Solder Thermoplastic DDR2 - - -
RS Stock No. 163-9395
Mfr. Part No.1473005-4
SGD7.055
Each (In a Tray of 240)
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 200 0.6mm Surface Mount Solder Thermoplastic DDR2 - - -
RS Stock No. 161-5604
Mfr. Part No.440360-2
SGD8.894
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. 161-4022
Mfr. Part No.1473005-1
SGD5.104
Each (In a Box of 120)
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 200 0.6mm Surface Mount Solder Thermoplastic DDR1 - - -
RS Stock No. 717-6684
Mfr. Part No.440360-2
SGD13.31
Each
units
Female DIMM Socket Right Angle Phosphor Bronze Gold over Nickel 124 0.8mm Surface Mount Solder Thermoplastic - - - -
RS Stock No. 542-2663
Mfr. Part No.1473005-1
SGD6.58
Each
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 200 0.6mm Surface Mount Solder Thermoplastic DDR1 - - -
RS Stock No. 719-8729
Mfr. Part No.2-2013289-1
SGD9.42
Each
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 204 0.6mm - Solder Thermoplastic DDR3 - - -
RS Stock No. 164-2917
Mfr. Part No.2-2013289-1
SGD6.651
Each (On a Tape of 200)
units
Female DIMM Socket Right Angle Copper Alloy Gold over Nickel 204 0.6mm - Solder Thermoplastic DDR3 - - -
RS Stock No. 185-5348
Mfr. Part No.2309411-1
SGD1.969
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. 178-9938
Mfr. Part No.78730-1002
BrandMolex
SGD37.37
Each (In a Tray of 120)
units
Female DIMM Socket Straight Copper Alloy Gold over Nickel, Tin over Nickel 288 0.85mm Surface Mount Solder Nylon DDR4 Yes 0.85mm 10.0mΩ
RS Stock No. 185-9262
Mfr. Part No.1565917-4
SGD7.926
Each (On a Reel of 150)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash 200 0.6mm Surface Mount - Thermoplastic DDR1, DDR2 Yes 6.2mm -
RS Stock No. 182-3004
Mfr. Part No.7111S1615A01LF
SGD2.568
Each (In a Pack of 5)
units
- SIMM Socket - - - - - - - - - - - -
RS Stock No. 213-5737
Mfr. Part No.877823003
BrandMolex
SGD13.095
Each (In a Tray of 45)
units
- - - - Gold 244 0.6mm Surface Mount - - - - - -
RS Stock No. 542-2556
Mfr. Part No.390113-1
SGD18.79
Each
units
Female DIMM Socket Right Angle Phosphor Bronze Gold over Nickel 144 0.8mm - Solder Nylon - - - -
RS Stock No. 681-2307
Mfr. Part No.5822134-3
SGD11.50
Each
units
Female SIMM Socket - Phosphor Bronze Tin over Nickel 72 2.54mm Through Hole Solder Liquid Crystal Polymer - - - -
RS Stock No. 217-5412
Mfr. Part No.1827341-4
SGD14.293
Each (In a Tray of 20)
units
- - Right Angle Copper Alloy Gold 200 0.6mm Surface Mount - - - - - -
RS Stock No. 186-4925
Mfr. Part No.1612618-1
SGD13.74
Each (In a Pack of 2)
units
Female DIMM Socket Right Angle Copper Alloy Gold Flash 200 0.6mm Surface Mount Solder Thermoplastic SO Yes 6.2mm 30.0mΩ
RS Stock No. 185-5347
Mfr. Part No.2309414-1
SGD2.02
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. 173-4043
Mfr. Part No.10033853-052FSLF
SGD14.391
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
RS Stock No. 213-5738
Mfr. Part No.877823003
BrandMolex
SGD16.37
Each
units
- - - - Gold 244 0.6mm Surface Mount - - - - - -