1. Product Overview

54550-0572 is a high-precision FFC/FPC flexible circuit connector from Molex 54550 series. It is a horizontal surface-mount receptacle with 0.5mm ultra-fine pitch and 5 pins. Adopting Easy-On simple mating structure, it acts as a core interconnect component for compact and lightweight electronic devices. Developed for limited mounting space and high-density circuit layout, 54550-0572 integrates miniaturized size, stable electrical transmission and reliable mechanical connection. It mates with standard FFC/FPC flexible flat cables and is widely used for signal and low-voltage power transmission in various portable and miniaturized smart electronic devices. Customers can obtain samples and check real-time stock of 54550-0572 via SMCC, an authorized Molex distributor, to ensure stable supply for R&D and mass production.

54550-0572 adopts industrial-grade phosphor bronze contacts with high-quality tin-bismuth plating, delivering excellent electrical conductivity, oxidation resistance and plug durability. It supports 20 stable mating cycles in standard conditions, meeting the long-term service requirements of civil and light industrial equipment.

2. Technical Specifications

2.1 Basic Structural Parameters

• Model Number: 54550-0572

• Product Series: Molex 54550 Easy-On FFC/FPC Connector Series

• Number of Pins: 5Pin (5 Contacts)

• Contact Pitch: 0.5mm Ultra-fine Pitch

• Mounting Type: SMT Surface Mount (Horizontal Right-angle)

• Board Mount Height: 1.20mm (Ultra-low Profile Design)

• Mating Type: Compatible with Standard FFC/FPC Flexible Flat Cables

• Contact Style: Top Contact

• Mating Method: Manual Easy Mating, No Auxiliary Tools Required

2.2 Electrical Performance Parameters

• Rated Current: 500mA (0.5A) per contact

• Rated Voltage: 50V DC

• Contact Resistance: ≤20mΩ (Standard Operating Condition)

• Insulation Resistance: ≥1000MΩ

• Withstand Voltage: 100V AC for 1 minute, No Breakdown

2.3 Mechanical & Environmental Parameters

• Mating Cycles: 20 stable insertions and withdrawals, suitable for equipment assembly and maintenance

• Operating Temperature: -40℃ ~ +85℃, suitable for high and low temperature complex working conditions

• Storage Temperature: -55℃ ~ +90℃

• Vibration Resistance: Complies with industry electronic equipment vibration standards, stable connection without loosening

2.4 Material & Plating Parameters

• Contact Material: High-elasticity Phosphor Bronze, Anti-fatigue and Deformation Resistant

• Contact Plating: Tin-Bismuth Alloy Plating, Anti-oxidation, Anti-corrosion and Excellent Solderability

• Housing Material: High-temperature Resistant Engineering Plastic, Flame Retardant in line with industry standards

• Environmental Compliance: Lead-free design, compliant with RoHS and REACH international environmental certifications

3. Industry Application Scenarios

3.1 Consumer Portable Electronic Products

54550-0572 is applied to sensor cable connection and touch key module signal transmission of wearable devices such as smart bracelets and smart watches. It is also used for signal connection of indicator lights, touch modules and microphone assemblies in Bluetooth headsets and smart speakers. In handheld game consoles and portable MP4/MP5 players, it connects key modules and small secondary display screens. The miniaturized size fits the ultra-thin structural design of wearable devices. Its stable electrical performance ensures uninterrupted signal and firm connection during daily frequent use.

3.2 Smart Sensing & Testing Equipment

In industrial and civil miniature testing devices, 54550-0572 transmits signals for various micro sensors, including temperature & humidity sensors, photoelectric sensors, pressure sensors and infrared sensing modules. It is widely adopted in household smart detectors, small industrial temperature measuring devices and smart home sensing components. The 5-contact design realizes integrated signal transmission and low-voltage power supply for sensors. The ultra-low profile allows embedding inside micro detection modules to meet the miniaturization and integration trend of equipment. Its wide temperature range adapts to indoor and light industrial working environments.

3.3 Miniature Medical Electronic Devices

54550-0572 is used for internal module connection of lightweight portable home medical devices, including portable blood pressure monitors, blood glucose meters, clinical thermometers and small physical therapy devices. It transmits signals and power for device keys, display screens and sensing probes. Adopting lead-free and environmentally friendly materials, it is non-toxic and meets the compliance requirements of medical equipment. With stable connection and low failure rate, it satisfies the high reliability and safety standards of medical devices, and fits mass production and long-term use of portable home medical equipment.

4. Market Outlook

The global electronics industry continues to develop towards miniaturization, integration, lightweight and low power consumption. Segmented tracks including smart wearables, smart home devices, portable medical equipment and vehicle-mounted micro electronic modules are growing rapidly. Market demand for ultra-fine pitch, ultra-low profile and high-reliability FPC/FFC connectors keeps rising. Traditional large-pitch and bulky connectors are gradually phased out, and micro connectors with 0.5mm or smaller pitch have become the mainstream of the industry.

As one of the world's top interconnect solution providers, Molex 54550 series connectors have been fully verified by the market with outstanding stability, compatibility and reliability. The popularization of smart watches, smart bracelets and TWS headsets drives increasing demand for interconnection of internal micro modules in wearable devices. The upgrading of whole-house smart home systems boosts the iteration of numerous small sensing, touch and lighting modules, expanding the market demand for micro FPC connectors. The refinement and integration of portable medical and vehicle-mounted electronics further accelerate the replacement of high-reliability micro connectors.

5. Supply Chain Service

54550-0572 is a 0.5mm pitch 5Pin FFC/FPC connector designed for miniaturized and ultra-thin electronic devices. Featuring ultra-low mounting height, stable electrical performance, excellent mechanical reliability and full compliance, it is widely applied in smart wearables, smart homes, micro sensors, portable medical devices, vehicle-mounted micro electronics and digital accessories. As an authorized Molex distributor, SMCC provides stable inventory supply of 54550-0572. With rich industry experience and professional technical support, we assist customers in product selection and recommend alternative solutions to accelerate product launch and enhance market competitiveness.

For more detailed information, please visit the official Molex website or contact electronic component distributor SMCC to learn more about 54550-0572.