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Molex MX123 Connector, Custom Wire Harness Manufacturer

Molex MX123 Connector

 

The Molex MX123 Sealed Connection System is a robust, fully sealed connector solution designed specifically for powertrain applications that demand high performance in harsh, underhood conditions. Featuring a 2.54mm (0.100") pitch, this system ensures low and stable contact resistance, making it ideal for reliable power and signal transmission. The MX123 system stands out with six distinct mechanical polarization options, along with color-coded receptacle and header housings, which minimize the possibility of mismating and ensure secure, error-free connections. Its durable design withstands high temperatures, moisture, and vibrations, offering excellent resistance to environmental challenges. Primarily used in automotive and commercial vehicles, the MX123 system is suited for powertrain modules, including engine and transmission control, as well as safety systems, chassis, and various body and interior applications, delivering consistent performance across diverse conditions.

 

Molex MX123 Connector

 

 

Molex MX123 Connector Features

 

  • GMW3191 specifications meet IP67, IP68, and IP69k sealing specifications, Temp Class III operating temperature specifications, and Vibe Class I vibration specifications
  • Matte-seal technology
  • The center-wall feature prevents scooping and extends past the length of the terminals
  • Header terminal filtering eliminates cross-talk between adjacent circuits in up-integrated systems
  • Integrated TPA and CPA components assist with mating reliability
  • Six unique mechanical polarization options and unique color-coding eliminate the risk of cross-mating incorrect connectors
  • PCB tail customization
  • Two wire-dress options create flexibility in wire-routing design with both 0° and 180° orientations
  • Precious-metal plating stabilizes contact resistance under severe temperature and vibration conditions
  • 14VDC voltage (maximum)
  • Current (maximum)
    • 2.80mm — 25A at 23°C
    • 0.64mm — 11A at 23°C
  • Contact resistance
    • 2.80mm — 5mΩ (maximum)
    • 0.64mm — 15mΩ (maximum)
  • 1600VDC dielectric withstanding voltage

 

 

MX123 Connector Specifications Chart

 

P/N Old P/N Circuits Color Descriptions Datasheet
345760703 34576-0703 56 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option G,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34576/345760703_sd.pdf?inline
345760803 34576-0803 56 Gray 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option H,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34576/345760803_sd.pdf?inline
345761903 34576-1903 56 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option G,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34576/345761903_sd.pdf?inline
348220013 34822-0013 66 Black 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option A,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/348/34822/348220013_sd.pdf?inline
348220033 34822-0033 66 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option A,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/348/34822/348220033_sd.pdf?inline
345660103 34566-0103 73 Black 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option A,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660103_sd.pdf?inline
345660203 34566-0203 73 Gray 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option B,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660203_sd.pdf?inline
345660303 34566-0303 73 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option C,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660303_sd.pdf?inline
345660603 34566-0603 73 Natural 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option F,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660603_sd.pdf?inline
345661303 34566-1303 73 Black 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option A,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345661303_sd.pdf?inline
345661403 34566-1403 73 Gray 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option B,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345661403_sd.pdf?inline
345661503 34566-1503 73 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option C,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345661503_sd.pdf?inline
345660703 34566-0703 80 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option G,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660703_sd.pdf?inline
345660803 34566-0803 80 Gray 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option H,Wire Dress Option 0 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345660803_sd.pdf?inline
345661903 34566-1903 80 Blue 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option G,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345661903_sd.pdf?inline
345662003 34566-2003 80 Gray 2.54mm Pitch,MX123 Female Receptacle Housing,Keying Option H,Wire Dress Option 9 https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/345/34566/345662003_sd.pdf?inline

 

 

MX123 Connector Applications

 

The Molex MX123 Sealed Connection System is versatile and finds widespread use across various automotive and commercial vehicle applications. It is particularly well-suited for powertrain modules, including critical systems like engine and transmission control, where reliable, low-resistance connections are essential for performance and safety. The robust design of the MX123 system makes it ideal for safety and chassis applications, where it can withstand harsh environments, vibrations, and extreme temperatures, ensuring stable electrical connections for critical safety systems. Additionally, it is commonly used in body and interior applications, where dependable connections are needed for features such as lighting, infotainment, and climate control. While these represent some of the more typical uses, the MX123 system's adaptability and high-performance characteristics make it suitable for many other scenarios that require reliable, sealed connections in demanding conditions.

 

 

Support Custom Wire Harness Assembly

 

  • Connector circuits: 56 - 80 Pin
  • Wire Gauge: 18 - 22AWG, depends on real needs
  • Wire Colors: Available in a wide range including white, black, red, yellow, blue, green, brown, orange, purple, grey, and more.
  • Wire Length: Fully customizable to your specifications.
  • Wiring Diagram: Tailor-made to meet your project needs.
  • Custom type: Fully customizable to your specifications.
  • Minimum Order: 50 pieces per order.

 

Molex MX123 Connector wire Harness

 

 

Customize Your Wire Harness

 

Send your sample or drawing/schematic for quote price→ Feedback with quotation(1~3 days) → Confirm quotation → Arrange sample you for approval→ [Make mold if needed (7 days) →Mold test] → Making samples(1~3 days)→ Samples test(Approval) → place order for Mass production(2~3 weeks)→ Quality checking→ Packing → Delivery → After Service → Repeat Order.