0554501169 – Connector – Molex

About this part

0554501169 – 11-Position 1.25mm Pitch Rectangular Header – Molex Mini Mi II Series

Secure reliable board-to-wire connections with the Molex 0554501169 connector header from the Mini Mi II series. This surface-mount male pin header features a compact 1.25mm pitch and shrouded design, ensuring precise mating and robust performance in space-constrained applications. Trust PCX to deliver this obsolete component with full traceability and fast shipping.

Key Features

11 Positions, Single Row: All contacts loaded for maximum connectivity
1.25mm Pitch (0.049″): High-density design saves PCB space
Surface Mount (SMT) Termination: Simplified automated assembly
Push-Pull Fastening: Secure mating with minimal insertion force
Tin-Plated Brass Contacts: Reliable conductivity and corrosion resistance
UL94 V-0 Rated Polyamide/Nylon Housing: Flame-retardant and durable
4-Wall Shrouding: Protects pins and ensures polarization

Technical Specifications

Connector Type: Header, Male Pins
Contact Mating Length: 0.110″ (2.79mm)
Insulation Height: 0.266″ (6.76mm)
Contact Shape: Square
Contact Finish: Tin (mating and post)
Insulation Color: Natural
Special Feature: Solder retention for improved mechanical stability

Common Applications

Industrial automation control boards
Medical monitoring equipment
Consumer electronics internal wiring
Telecommunications infrastructure
Automotive sensor modules

About Molex
Molex is a globally recognized leader in electronic connectivity solutions with over 80 years of innovation. Their expertise in high-reliability interconnects makes them a preferred partner for mission-critical industries including automotive, medical, and industrial automation. Molex components are renowned for precision engineering and rigorous quality testing.
The Mini Mi II series exemplifies Molex’s commitment to miniaturization without compromising durability. These connectors undergo extensive validation to ensure consistent performance in harsh environments, aligning with PCX’s dedication to supplying proven, trustworthy components for demanding applications.

About Rectangular Connectors
Rectangular connectors like headers and receptacles form the backbone of electronic interconnections, enabling modular designs and simplified maintenance. Their standardized layouts ensure compatibility across countless devices, from consumer gadgets to industrial machinery. Selecting the correct pitch, current rating, and mating mechanism is critical for signal integrity and long-term reliability.
High-density headers with features like shrouding and solder retention—such as this Molex solution—prevent misalignment during assembly and resist vibration in operation. These attributes make them indispensable in modern electronics where space efficiency and robust performance are non-negotiable.

Packaging
Supplied in Tape & Reel (TR) packaging for automated SMT assembly efficiency. Contact PCX for reel quantity details.

FAQs
Question: Is this connector RoHS compliant?
Answer: Yes, this part uses tin-plated contacts and UL94 V-0 polyamide/nylon housing meeting RoHS standards.

Question: What mating receptacle pairs with this header?
Answer: It interfaces with Mini Mi II 5557 series cable receptacles. Contact PCX for mating part recommendations.

Question: Can I use this in high-vibration environments?
Answer: Yes, the 4-wall shrouding and push-pull locking provide secure mating suitable for industrial/automotive use.

Question: Why is this part marked obsolete?
Answer: Molex has discontinued production, but PCX maintains authentic stock for legacy system support.

Question: What’s the maximum current rating?
Answer: Refer to the datasheet (available on PCXCo.com) for detailed electrical specifications.

Question: Do you offer samples for prototyping?
Answer: PCX provides samples for qualified projects—inquire via our product page.

Disclaimer: Product images are representational. Refer to datasheets for exact specifications.

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