1-1534546-1

The 1-1534546-1 is a TE Connectivity MQS (Micro Quadlock System) series automotive connector housing. TE’s MQS connector system is one of the most widely used automotive interconnection solutions in the global automotive industry, deployed by virtually all major OEMs in body electronics, interior systems, and comfort applications. The MQS system features a compact 2.54mm pitch design with 0.63mm tab width contacts, providing an excellent balance of space efficiency and electrical performance for signal and low-power applications. These connectors are available in various circuit counts and configurations including single-row and dual-row layouts, with both sealed and unsealed versions to suit different application requirements. The system uses high-performance PBT (Polybutylene Terephthalate) housings with excellent mechanical strength, dimensional stability, and resistance to automotive chemicals and temperatures. TE’s MQS connectors are qualified to stringent USCAR automotive standards, ensuring reliable performance across the full -40°C to +120°C operating temperature range and under the vibration and shock conditions typical of automotive environments. With positive locking mechanisms and available Connector Position Assurance (CPA) features, these connectors provide secure mating that can be verified visually or by feel during assembly.

Automotive connectors like the MQS series function by providing a reliable mechanical and electrical interface between two wiring harnesses or between a harness and an electronic device. The connector system consists of two mating halves — typically a plug side and a receptacle side — each containing electrical contacts that mate when the connector halves are joined. The male contacts (tabs or pins) are inserted into the female contacts (receptacles), creating multiple contact points that ensure low and stable electrical resistance. The spring beams in the female receptacle contacts provide normal force that maintains contact pressure throughout the product lifetime, even under vibration and thermal cycling. The plastic housing serves multiple functions: it precisely aligns the contacts for proper mating, provides insulation between adjacent circuits, protects the contacts from physical damage, and incorporates locking features to prevent accidental disengagement. For sealed versions, elastomeric wire seals and interface seals prevent the ingress of moisture, dust, and contaminants, maintaining insulation resistance and preventing corrosion. The locking latch and optional CPA device ensure that once mated, the connector halves remain securely connected even under vibration, shock, and pulling forces on the wires. The overall design ensures that electrical connections remain reliable for tens of thousands of hours in harsh automotive environments.

For the MQS series connector system, the typical pin/contact configuration includes:

• Contact Type: 0.63mm wide stamped tab contact (male) and matching receptacle contact (female)
• Contact Material: Copper alloy base with tin, silver, or gold plating
• Crimp Type: F-Crimp design for both conductor and insulation
• Wire Range: 0.22-0.35mm² (26-22 AWG) and 0.50-0.75mm² (20 AWG) options
• Arrangement: Single row or dual row configurations available
• Polarization: Multiple keying options prevent mismating between different circuits

Note: The exact number of positions, row configuration, and pin assignment depend on the specific variant. Please refer to the official TE Connectivity product documentation and datasheet for part number 1-1534546-1 for precise specifications.

• Body Control Modules (BCM): The primary application area — MQS connectors are used extensively in BCMs for connecting various body electronic functions including lighting, wipers, door locks, and window control
• Door Modules: Deployed in door control units for window regulator motors, central locking actuators, mirror adjustment, and door handle sensors
• Instrument Panels: Used throughout the dashboard for instrument clusters, HVAC controls, audio systems, switch packs, and indicator lights
• Interior Lighting: Connects dome lights, reading lights, ambient lighting, and vanity mirror lights to the vehicle wiring harness
• Seat Control: Used in power seat modules for seat position motors, heating elements, memory functions, and seatbelt reminders
• HVAC Systems: Connects climate control panels, blower motor resistors, air door actuators, and temperature sensors in the heating and air conditioning system
• Infotainment and Audio: Provides signal and power connections for radios, navigation units, displays, speakers, and antenna interfaces
• Security and Keyless Entry: Used in body control modules for keyless entry receivers, immobilizer systems, alarm sensors, and central locking control