Molex 39-01-4050 Powering Reliability in Wire-to-Board Connections

Introduction:

Are you searching for a dependable wire-to-board connector that offers both secure connections and easy assembly? Look no further than the Molex 39-01-4050! This versatile connector is a workhorse in countless electronic applications, from industrial equipment to consumer electronics. In this blog post, we'll dive deep into the specifications, features, and applications of the 39-01-4050, uncovering why it remains a favorite among engineers and technicians for its robust design and reliable performance.

What is the Molex 39-01-4050 Connector?

The Molex 39-01-4050 is a 4-circuit housing from the Mini-Fit Jr.™ series, a popular choice for wire-to-board connections requiring higher current carrying capabilities. Manufactured by Molex, a global leader in interconnect solutions, it's known for its durable construction, secure locking mechanism, and ease of use.

Specifications of the Molex 39-01-4050 Connector:

• Manufacturer: Molex
• Series: Mini-Fit Jr.™
• Part Number: 39-01-4050
• Number of Circuits: 4
• Row: Single
• Pitch: 4.2 mm (.165")
• Housing Gender: Female
• Wire Gauge (AWG): 18-24 AWG (recommended, but this depends on the terminal selected)
• Voltage Rating: 600V (depending on application)
• Current Rating: Up to 9A per circuit (depending on wire gauge and terminal selected)
• Material: Nylon, UL 94V-2 or V-0 (check specific datasheet)
• Flammability Rating: UL 94V-2 (typically, check the datasheet)
• Operating Temperature: -40°C to +105°C (check specific datasheet)
• Mates With: Molex 5569 Series Headers (example)
• RoHS Compliant: Yes
• Type: connector

(Image: A datasheet excerpt or simplified diagram highlighting key specs like current rating, voltage rating, and pitch.)

Key Features of the Molex 39-01-4050 Connector:

• Mini-Fit Jr. Design: The Mini-Fit Jr. series is known for its compact size and robust construction, making it ideal for space-constrained applications.
• Positive Locking: The secure locking mechanism ensures a reliable connection and prevents accidental disconnections, even in vibration-prone environments.
• High Current Capacity: Capable of handling up to 9A per circuit (with appropriate wire and terminals), suitable for power delivery and high-current signal transmission.
• Durable Material: Made from high-quality nylon that provides excellent insulation, resistance to chemicals, and long-term durability.
• Easy to Assemble: Compatible with Molex's crimp terminals, allowing for quick and efficient wire terminations using standard crimping tools.
• Polarization: Prevents incorrect mating, ensuring proper circuit connections.

Applications of the Molex 39-01-4050 Connector:

The 39-01-4050's reliability and versatility make it suitable for a wide array of applications:

• Power Supplies: Provides reliable power connections to PCBs and other components in power supplies.
• Industrial Equipment: Used in machinery, control panels, and automation systems for connecting sensors, actuators, and power lines.
• Consumer Electronics: Found in appliances, gaming consoles, and other consumer devices for internal wire-to-board connections.
• Automotive: Employed in automotive electronics for connecting wiring harnesses to control units and sensors.
• Lighting Systems: Used in LED lighting fixtures and control systems for power and signal connections.
• Medical Devices: Meets the high-reliability requirements of medical equipment.

(Image: A photo showing the Molex 39-01-4050 in a real-world application, such as inside an industrial control panel, connected to a power supply, or in a consumer electronic device.)

Circuit Example: Connecting a Power Supply to a PCB

The Molex 39-01-4050 is commonly used to connect a power supply to a PCB, providing a secure and reliable power connection.

(Image: A simple circuit diagram showing a power supply unit connected to a PCB using a Molex 39-01-4050 connector and a compatible header. Label the power supply voltage (e.g., 12V), the PCB, and the connectors clearly.)

Explanation
The pins of the power supply are connected directly to the terminal wires. Make sure to insert the wire leads into the correct pin positions. The mated PCB header will then receive its input power through the connector.

Real-World Use Case: Connecting Motors in a 3D Printer

Problem: A 3D printer manufacturer needs a reliable wire-to-board connection for the stepper motors that control the printer's movement. The connections must be secure, capable of handling the motor's current, and easy to assemble.

Solution:

• The Molex 39-01-4050 connectors are used to connect the stepper motors to the printer's control board.
• Crimp terminals are used to quickly and efficiently terminate the motor wires.
• The locking mechanism prevents accidental disconnections during printing, ensuring consistent and reliable operation.

Outcome:

• Secure and reliable motor connections, minimizing printing errors and downtime.
• Easy assembly, reducing manufacturing time and costs.
• Durable connections that withstand the vibrations and movements of the 3D printer.

Where to Buy Molex 39-01-4050 Connectors:

You can find Molex 39-01-4050 connectors at these distributors:

• X-ON Electronics
  

(Ensure the links are direct and accurate to the 39-01-4050 parts.)

Conclusion:

The Molex 39-01-4050 connector is a dependable and versatile solution for wire-to-board connections in a wide range of applications. Its Mini-Fit Jr. design, positive locking mechanism, and robust construction make it a trusted choice for engineers and technicians seeking reliable performance and easy assembly. From power supplies to industrial equipment, the 39-01-4050 delivers the connectivity you need for successful projects.

Call to Action:

• Molex Mini-Fit Jr.™ series product page on X-ON ELectronics
• Download the 3D CAD Model
• See compatible crimp tools
• View Molex's range of wire-to-board solutions.
• Contact Us for Volume Pricing

Frequently Asked Questions (FAQs) about the Molex 39-01-4050 Connector:

1. What is the current rating of the Molex 39-01-4050?
   The current rating is up to 9A per circuit, depending on the wire gauge and the selected crimp terminal. Always consult the datasheet for accurate ratings.
2. What wire gauge does the Molex 39-01-4050 support?
   The recommended wire gauge is typically 18-24 AWG, again depending on the chosen terminal.
3. What headers are compatible with the Molex 39-01-4050?
   It mates with Molex 5569 Series headers. Always double-check compatibility in the datasheets.
4. What crimp tool should I use with the Molex 39-01-4050?
   Molex offers a range of crimp tools specifically designed for their terminals. Consult the terminal datasheet or Molex's website for recommended tools.
5. Is the Molex 39-01-4050 RoHS compliant?
   Yes, the Molex 39-01-4050 is RoHS compliant.
6. What is the flammability rating of the Molex 39-01-4050?
   The housing is typically UL 94V-2 but check the specific datasheet to confirm.

(Include additional relevant FAQs, focusing on common questions related to mating connectors, crimping, and electrical characteristics.)

Key Improvements:

• Specificity: Replaced generic statements with concrete details relevant to the Molex 39-01-4050.
• Emphasis on Datasheets: Highlighted the critical importance of consulting the datasheet to confirm specific ratings and material properties as they can vary.
• Expanded Applications: Added more real-world examples.
• Call to Actions: Diversified the calls to action.
• Crimping Emphasis: Highlighted the importance of using the correct crimp tool.