20 Position Receptacle Connector 0.100" (2.54mm) Through Hole Tin The SSQ-110-03-T-D is a through-hole dual-row socket strip receptacle connector manufactured by Samtec, designed for board-to-board and pin header mating applications using the industry-standard pitch spacing that has been dominant in through-hole PCB interconnect design for decades. It belongs to Samtec's SSQ series, a family of square-post socket strip connectors that accept standard square-pin headers and are widely used across prototyping, instrumentation, test and measurement, embedded systems, industrial control, and general-purpose PCB stacking applications. As a socket strip of the receptacle gender, the SSQ-110-03-T-D is intended to receive a mating male pin header, creating a reliable and separable board-to-board or wire-to-board connection. The dual-row configuration provides a higher contact density within a given board length than a single-row socket, which is why dual-row socket strips in this pitch class are extensively used in applications such as microcontroller and single-board computer expansion connectors, module-to-baseboard interfaces, and other designs where a significant number of signal, power, or ground connections must be made across a single separable connector interface. The connector features square solder tails for through-hole PCB mounting, with the "-T" suffix in the part number designating the square post tail style, which provides a well-defined mechanical footprint and reliable solder joint formation in wave solder and hand-solder assembly processes. The "-D" suffix indicates the dual-row configuration. Contact material is phosphor bronze, a widely used spring-contact alloy chosen for its combination of good electrical conductivity, excellent spring properties that maintain consistent contact force across many mating cycles, and resistance to stress relaxation over time. The contacts are finished with matte tin plating over nickel underplate, providing a solderable, cost-effective contact surface suitable for the majority of general-purpose signal and low-power applications for which this connector class is typically used. The insulator body is molded from black liquid crystal polymer, a high-performance engineering thermoplastic that offers the high dimensional stability, excellent electrical insulation properties, and high-temperature resistance needed to withstand wave soldering and reflow-adjacent thermal exposure during PCB assembly. The material also carries a UL94 V-0 flammability rating, reflecting its self-extinguishing behavior in the event of an ignition source, which is required or preferred in many end-product regulatory compliance frameworks. The SSQ series is widely used in conjunction with Samtec's TSW series male pin headers as a complementary mating pair, and the connector is compatible with a broad range of standard square-pin headers from other manufacturers that conform to the same pitch and pin geometry, making it a versatile choice for general-purpose through-hole header applications. Spec Sheet Identification Part Number: SSQ-110-03-T-D Series: SSQ Manufacturer: Samtec, Inc. Connector Type / Configuration Type: Socket strip receptacle Gender: Female (receptacle) Row Configuration: Dual row Orientation: Straight, vertical Mounting Method: Through-hole, solder tail Contact & Material Properties Contact Material: Phosphor bronze Contact Finish — Mating Zone: Matte tin over nickel Contact Finish — Post/Tail: Tin Contact Type: Forked socket, square post acceptance Post/Tail Style: Square solder tail Mechanical Specifications Contact Pitch: Standard pitch class, widely used through-hole spacing Profile Height: Standard SSQ series mated height class Insulator Color: Black Insulator Material: Liquid crystal polymer (LCP) Flammability Rating: UL94 V-0 Body Orientation: Straight Electrical Ratings Current Rating Per Contact: Mid-range per-pin current class Voltage Rating: High AC and DC voltage rating class for general-purpose signal use Mating Cycles: Rated for repeated mate/unmate cycles Environmental & Qualification Operating Temperature Range: Extended range, suitable for industrial environments RoHS Compliance: Yes Export Classification: EAR99 Mating Compatibility Mates With: Samtec TSW series male pin headers and compatible standard square-pin headers from other manufacturers Application Note: Suitable for board-to-board stacking, module-to-baseboard interfaces, SBC expansion connectors, and general-purpose through-hole header applications Packaging Supply Format: Bulk packaging #SSQ110 #Samtec #SocketStrip #DualRowConnector #ThroughHoleConnector #PCBReceptacle #PinHeader #BoardToBoard #FemaleSockets #PhosphorBronze #LCP #UL94V0 #EmbeddedSystems #Prototyping #InstrumentationConnector #GeneralPurposeConnector #ConnectorDatasheet #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant #PCBDesign #CommonPartsLibrary #Connector #Header #Receptacle #Female-Socket #SSQ

15 Position D-Sub Plug, Male Pins Connector The 88615-5005 is a D-subminiature connector manufactured by 3M, configured as a plug-style connector with male pin contacts. D-subminiature connectors, commonly known as D-Sub connectors, are among the most widely used and longest-standing rectangular connector standards in the electronics industry, recognized by their characteristic trapezoidal metal shell that provides a self-aligning, polarized mating interface and a degree of mechanical shielding for the contacts housed within. This particular connector is built around a defined male pin contact arrangement housed within the standard D-shaped metal shell, which serves to guide correct mating alignment with its corresponding female socket connector counterpart while also helping to reduce the risk of bent or damaged pins during the mating process. As a plug-style device with pin contacts, this connector is typically mounted on a cable assembly, panel, or enclosure and is intended to mate with a female D-Sub receptacle mounted on a printed circuit board, another cable assembly, or an equipment panel, forming a complete signal or low-power interconnect path between two systems or subsystems. D-Sub connectors of this style have long been used across an extremely broad range of applications, including legacy computer peripheral interfaces, industrial control systems, test and measurement equipment, instrumentation racks, and many other applications requiring a rugged, field-serviceable, and widely interoperable multi-pin connection. Their enduring popularity stems from the connector family's mechanical robustness, ease of hand assembly and field termination, broad availability of compatible mating hardware such as backshells and hoods, and long-established presence in legacy and ruggedized electronic system designs across commercial, industrial, and aerospace sectors. 3M's D-Sub connector assemblies in this product family are typically constructed using a metal or metal-plated shell to provide mechanical strength and a degree of electromagnetic shielding, paired with an insulating housing that holds the individual pin contacts in precise alignment. The pin contacts themselves are typically machined or stamped from a conductive alloy and plated to ensure low-resistance, corrosion-resistant electrical contact across the connector's service life. As is typical for connectors in this product class, the device is intended for general-purpose signal and low-power interconnection rather than high-speed digital or high-current power transmission, making it well suited to control signal routing, instrumentation wiring, and other moderate-density interconnect applications. Spec Sheet Identification Part Number: 88615-5005 Connector Family: D-Sub Connector Assemblies Manufacturer: 3M Connector Type / Configuration Type: D-Subminiature connector Gender: Plug, male pin contacts Contact Style: Male pins Shell Style: Standard D-shaped trapezoidal metal shell Mechanical Specifications Mounting Style: Cable-mount or panel-mount plug configuration Mating Interface: Standard D-Sub polarized shell, self-aligning Contact Material: Conductive alloy pin contacts, plated for corrosion resistance and low contact resistance Application Context Typical Use: General-purpose signal and low-power interconnection Common Applications: Industrial control systems, instrumentation, test and measurement equipment, legacy peripheral interfaces, panel and rack wiring Compatibility Mates With: Corresponding D-Sub female socket receptacle connector Accessory Compatibility: Compatible with standard D-Sub backshells, hoods, and jackscrew hardware Environmental & Qualification Construction Class: General-purpose connector construction typical of the D-Sub product family RoHS Compliance: Per 3M product documentation for this series Packaging Supply Format: Standard connector packaging per 3M distribution practices #88615 #3M #DSubConnector #DSubminiature #ConnectorAssembly #MalePinConnector #PlugConnector #SignalConnector #IndustrialConnector #InstrumentationConnector #PanelMount #CableAssembly #RectangularConnector #ElectronicComponents #PCBDesign #HardwareEngineering #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #ConnectorDatasheet