Right Angle Surface Mount Memory & SIM Card Connector, with Solder Termination

5040771891 – Right Angle microSD™ Card Connector – Molex

This Molex 5040771891 surface mount memory connector delivers reliable microSD™ card interfacing in space-constrained designs. Engineered for high-density PCB applications, it features a low-profile right-angle orientation and gold-plated contacts for optimal signal integrity. PCX ensures fast shipping and dedicated support for your legacy component needs.

Key Features

• Card Type: Secure Digital – microSD™
• Mounting: Surface Mount, Right Angle (0.050″ height)
• Termination: Solder, 10 positions (8+2)
• Contact Finish: Gold (8.00µin thickness)
• Insertion/Removal: Push-In, Pull-Out mechanism
• Special Feature: Integrated detection switch

Technical Specifications

Part of Molex’s 504077 series, this obsolete connector uses a normal top-mount design with robust gold plating (0.203µm) for corrosion resistance. Its compact 1.28mm height above board makes it ideal for slim devices. The connector includes a switch for card detection, ensuring secure data transfer during insertion cycles.

Typical Applications

• Industrial handheld scanners and meters
• Embedded computing systems
• Medical monitoring equipment
• IoT edge devices
• Legacy consumer electronics repair

About Molex

Molex, a global leader in electronic connectivity solutions, has pioneered innovative interconnects for over 80 years. Renowned for rigorous quality standards, their components undergo extensive validation for durability and performance in demanding environments. The company’s expertise in miniaturization and high-speed data transmission makes them a trusted partner across aerospace, automotive, and industrial sectors.

Molex maintains cutting-edge manufacturing facilities with ISO-certified processes, ensuring batch-to-batch consistency. Their commitment to backward compatibility supports long-lifecycle products, providing engineers with reliable solutions for legacy and new designs alike.

About Memory Connectors

Memory connectors facilitate critical data transfer between removable storage media and host devices. These interfaces must maintain precise mechanical alignment and electrical continuity despite repeated insertion cycles. High-quality connectors prevent data corruption through optimized contact geometry and materials resistant to wear and environmental stress.

In compact electronics, right-angle memory connectors like this microSD™ socket enable vertical PCB space savings while providing tactile feedback during card handling. Their design minimizes signal path lengths, preserving data integrity in high-frequency applications without compromising mechanical robustness.

Packaging Options

Available in Tape & Reel (TR) for automated assembly or Cut Tape (CT) for prototyping needs.

FAQs

Q: Is this connector compatible with microSDHC/microSDXC cards?
A: Yes, it supports all microSD™ form factor cards including microSDHC and microSDXC.

Q: What’s the operating temperature range?
A: Refer to the Molex datasheet for detailed specifications, but standard versions typically support -40°C to +85°C.

Q: Can it withstand repeated card insertions?
A: Yes, the gold-plated contacts and reinforced housing ensure 10,000+ mating cycles.

Q: Does the switch support write-protect functionality?
A: The integrated switch detects card insertion/removal only; write-protect isn’t supported in microSD™ standards.

Q: Is solder reflow recommended for installation?
A: Yes, this surface-mount device is designed for standard reflow processes. Follow Molex’s thermal profile guidelines.

Q: Why choose an obsolete part for new designs?
A: Ideal for maintaining legacy systems or where design freeze requirements exist. PCX provides ongoing access to qualified inventory.

Disclaimer: Product images are representational. Refer to datasheet for exact dimensions.

Datasheet: Download Full Specifications (Hosted on PCXCo.com)

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