Keystone Electronics

<p>The Keystone Electronics 2991 is a surface mount battery contact designed for coin cell applications. It features an SMD (SMT) tab termination for easy PCB mounting. The contact is made of phosphor bronze with tin-nickel plating, ensuring reliable electrical connection and corrosion resistance.</p><p>&nbsp;</p><p>With a height above board of just 0.016" (0.41mm), this contact is suitable for low-profile designs. It is supplied on tape and reel packaging with 16mm tape width, 8mm pitch, and 1500 pieces per 7" reel. The part is RoHS3 compliant according to the datasheet, though independent verification is lacking.</p><p>&nbsp;</p><p>This negative contact is ideal for use in battery holders for coin cells such as CR2012, CR2016, CR2020, CR2025, CR2032. It can be used in 3V or 6V (two-cell) configurations. The contact is designed for use with plastic insulators that prevent shorting when batteries are installed improperly.</p><p>&nbsp;</p><p>The part is available in tape and reel packaging for automated assembly, with a reel capacity of 1500 pieces per 7" reel.</p>

<p>The Keystone Electronics 5227 is a battery contact designed for use in molded cases with self-contained battery compartments. It features a solid positive button contact and a negative spring contact, providing reliable connections for two cylindrical battery cells.</p><p>&nbsp;</p><p>Constructed from steel with nickel plate on the contact plate and spring steel with nickel plate on the spring, these contacts offer durability and low contact resistance. The solder tab termination allows for easy integration via wire lead or direct PC mounting.</p><p>&nbsp;</p><p>With overall dimensions of 24.6mm length, 14.0mm width, and 11.3mm height, the 5227 includes two mounting holes of 1.57mm and 1.40mm diameter for secure installation. This space-saving design is economical and ideal for compact battery-powered devices.</p><p>&nbsp;</p><p>The 5227 is RoHS3 compliant, ensuring environmental safety. Its dual contact design accommodates variations in battery length, maintaining dependable electrical connection.</p>

<p>The Keystone Electronics 3525 is a non-insulated quick connect receptacle designed for press-fit through-hole mounting. It accepts a 0.205" (5.21mm) wide by 0.020" (0.51mm) thick tab. The female terminal is made of brass with a tin-nickel plating, providing good conductivity and corrosion resistance. The overall length is 0.437" (11.10mm), and the contact material thickness is 0.016" (0.41mm). This component is RoHS compliant and suitable for various wire-to-board or board-to-board applications requiring a reliable press-fit connection.</p>

<p>The Keystone Electronics 1593-2 is a single end turret terminal designed for through hole mounting with a staking flare termination style. It features a brass contact material per ASTM-B16 with a bright electro-tin finish per MIL-T-10727 Type 1, ensuring excellent solderability and extended shelf life.</p><p>&nbsp;</p><p>This terminal has a diameter of 1.57mm (0.062") and a flange diameter of 2.39mm (0.094"). The mounting hole diameter is 1.70mm (0.067") and the staking side outer diameter is 1.57mm (0.062"). It is designed for a board thickness of 1.57mm (0.062"). The part is non-insulated and RoHS3 compliant.</p><p>&nbsp;</p><p>Typical applications include use in terminal boards, test equipment, and other electronic assemblies requiring a reliable solderable connection point. The double turret configuration allows for multiple wire connections or wrapping.</p>

<p>The Keystone Electronics 8199 is a compact, heavy-duty screw terminal designed for PCB mounting. It features six snap-in legs for total stability and a serrated top surface to secure connections.</p><p>&nbsp;</p><p>Rated at 30 Amps, this terminal uses a 0.045 in (1.14 mm) thick brass terminal with matte tin plate finish and a stainless steel 6-32 x 0.250 in screw. The through-hole snap-fit mounting ensures reliable mechanical attachment.</p><p>&nbsp;</p><p>This terminal is RoHS3 compliant and suitable for applications requiring a robust, high-current screw connection on a printed circuit board.</p>

<p>The Keystone Electronics 1049 is a through-hole battery holder designed for two 18650 cylindrical lithium-ion cells. It features a polarized housing with clear polarity markings to prevent reverse battery installation. The holder is made from high-temperature nylon 46 with UL 94V-0 flammability rating, suitable for solder reflow processes. Contact terminals are stainless steel with gold flash plating for reliable electrical connection. The holder accommodates cells with or without built-in PCB protection circuits. Operating temperature range is -50°C to 145°C. The product is packaged in trays of 25 pieces.</p>

<p>The Keystone Electronics 1028C is a snap-on retainer cover specifically designed for use with the 1028 series battery holders (compatible with holder part number 36-1028-ND). It secures the battery in place to withstand shock and vibration, and helps protect against shorting.</p><p>&nbsp;</p><p>The retainer cover is molded from PBT material with a UL 94V-0 flammability rating, ensuring reliable flame resistance. The contacts are made of .012" stainless steel with a tin-nickel plate finish, providing excellent solderability and durability. The component supports through-hole mounting with solder termination and is rated for an operating temperature range of -50°C to +145°C.</p><p>&nbsp;</p><p>This accessory is intended for use in applications requiring battery retention in low-profile holders, such as computer memory backup, power backup systems, telecommunications equipment, and industrial or commercial security systems. The standard package quantity is 50 pieces per tray.</p>

<p>The Keystone Electronics 3001 is a through-hole coin cell retainer designed to securely hold a single 12.0mm diameter coin cell battery. It is compatible with battery series CR1216, BR1220, and DL1225.</p><p>&nbsp;</p><p>The retainer features PC Pin termination for reliable soldered connections on a PCB. The contact is made of phosphor bronze with a matte tin plating, suitable for lower soldering temperatures. The mounting hole diameter is 1.85 mm, and the height above the board is 3.00 mm.</p><p>&nbsp;</p><p>This retainer is available on tape and reel for automated assembly. It is designed for through-hole mounting and is compatible with wave and reflow soldering processes.</p>

<p>The Keystone Electronics 1212 is a male quick connect terminal designed for through-hole PCB mounting. It features a 0.187" (4.75mm) tab width, 0.032" (0.81mm) tab thickness, and 0.245" (6.22mm) tab length. The overall length of the terminal is 12.70mm (0.500").</p><p>&nbsp;</p><p>Constructed from brass with tin plating, the terminal is non-insulated and terminated via solder. The required mounting hole diameter is 0.052" (1.3mm), as inferred from similar catalog numbers. This part is UL recognized under file E201546 for Quick-Fit terminals, meeting NEMA and UL310 standards.</p><p>&nbsp;</p><p>Typical applications include PCB-mounted quick disconnect connections in power distribution, control boards, automotive wiring, and industrial equipment. The terminal provides a reliable, low-resistance connection for repeated mating cycles.</p>

<p>The Keystone Electronics 1057TR is a surface mount coin cell holder designed for 20mm diameter batteries, such as CR2032 and CR2025. It securely holds a single battery with a polarized design that prevents improper insertion, ensuring correct polarity.</p><p>&nbsp;</p><p>Key specifications include an operating temperature range of -50°C to 145°C, making it suitable for harsh environments. The contacts are made of phosphor bronze with gold plating (flash) for reliable electrical connection, while the base is constructed from glass filled LCP with UL 94V-0 flammability rating.</p><p>&nbsp;</p><p>The holder is supplied on tape and reel (500 pieces per reel) with 44mm tape width and 20mm pitch, compatible with vacuum and mechanical pick-and-place assembly. The conductive polystyrene carrier tape meets ANSI/EIA-481 standards.</p>

<p>The Keystone 1051 is a battery holder designed to accommodate a single CR123A cylindrical cell. It features a through-hole mounting style with PC pin termination for secure attachment to a PCB. The housing is made from high-temperature Nylon 46 with a UL 94V-0 flammability rating, suitable for reflow or wave soldering processes. Contacts are stainless steel with a tin-nickel plate. The operating temperature range spans -50°C to 145°C, making it suitable for demanding environments. This holder provides a polarized design to prevent improper battery installation and requires no tools for battery insertion or removal. It is commonly used in computer memory backup, telecommunications, security systems, and industrial controls.</p>

<p>The Keystone Electronics 7818 is a through-hole, solder termination male quick-connect header from the Quick-Fit series. It features three 0.250" (6.35mm) wide by 0.032" (0.81mm) thick brass tabs with a tin-plated finish. The red thermoplastic insulator is UL rated 94V-0 and covers the non-mating end of the terminals.</p><p>&nbsp;</p><p>Electrical rating is 15 Amps at 500V AC, with an operating temperature range of -50°C to +145°C. This header is designed to keep terminals perpendicular to the PCB, increasing retention strength and maintaining position for wave soldering.</p><p>&nbsp;</p><p>The overall length is 13.13mm (0.517"). Contact material is brass with tin finish. The part is RoHS3 compliant per manufacturer datasheet.</p>

<p>The Keystone Electronics 4250 is a single-circuit fuseholder block designed for cartridge fuses. It is rated for 15A continuous current at 500V AC, making it suitable for a variety of overcurrent protection applications. The holder accepts standard 3AG fuses with dimensions of 0.25" diameter by 1.26" length (6.35mm x 32mm), also known as SFE-20.</p><p>&nbsp;</p><p>This fuseholder features through-hole mounting with PC pin termination for secure attachment to printed circuit boards. The horizontal orientation allows for low-profile PCB integration. The base is constructed from FR-4 material with a UL 94V-0 flammability rating, ensuring flame retardancy. Contacts are made of brass with a tin finish for reliable electrical conductivity and corrosion resistance.</p><p>&nbsp;</p><p>Designed for use in circuit protection applications, the 4250 is commonly employed in power supplies, industrial controls, and electronic equipment where reliable fuse retention and easy replacement are required. The block-style holder provides a robust mechanical interface for the fuse.</p>

<p>The 3518P is a fuse clip designed to hold 5mm diameter cartridge fuses, manufactured by Keystone Electronics. It features through-hole mounting with a horizontal orientation, making it suitable for PCB integration where space is limited.</p><p>&nbsp;</p><p>The clip is constructed from brass with a tin-plated contact finish, providing reliable electrical conductivity and corrosion resistance. It is rated for 15A continuous current and has a UL current rating of 15A, ensuring safe operation within its specified limits. The termination style is PC Pin, allowing direct insertion into a printed circuit board.</p><p>&nbsp;</p><p>This fuse clip is intended for use with 5mm cartridge fuses in overcurrent protection applications. The part number 3518P specifically includes orientation legs for PCB stability. Material thickness is 0.41mm, and the clip is designed for single circuit use.</p>

<p>The Keystone 5222 is a battery contact spring (coil) designed for use with cylindrical cells. The contact is constructed with a steel plate and spring steel spring, both nickel plated for corrosion resistance. It operates over an extended temperature range of -45°C to 85°C. The component is RoHS3 compliant and REACH unaffected. With a custom mounting design, it can be integrated into various battery holder configurations. It is compatible with multiple cylindrical cell sizes, making it suitable for a wide range of battery-powered devices.</p>

<p>The Keystone Electronics 4527C is a cap (cover) accessory designed specifically for the #4527 fuseholder. It provides protection and insulation for the fuse.</p><p>&nbsp;</p><p>The cover is constructed with a PBT base and brass, tin-plated contacts. It carries a current rating of 10 A at 250 V AC. The base material is rated UL 94V-0 for flammability resistance. This product is not UL rated as an assembly.</p><p>&nbsp;</p><p>Mounting is snap-in style with solder lug termination, making it suitable for through-hole or panel-mounted fuseholder applications. It is intended for use in circuit protection applications where a protective cover is needed for the 4527 series fuseholder.</p>

<p>The Keystone Electronics 7313 is a lockwasher terminal lug designed for secure electrical connections. It features a #8 stud size with an angled mounting orientation, making it suitable for space-constrained applications. The lug has a 2.36mm (0.093") hole diameter and an overall length of 16.26mm (0.640").</p><p>&nbsp;</p><p>Constructed from tin-plated brass, the lug offers good solderability and corrosion resistance. The material thickness is 0.46mm (0.018"). The internal tooth lockwasher style provides vibration resistance, preventing loosening of the connection in dynamic environments.</p><p>&nbsp;</p><p>As a solder lug connector, this part is typically used in panel, chassis, or PCB applications requiring a reliable grounding or termination point. The angled design facilitates routing in tight layouts.</p>

<p>The Keystone Electronics 7244-5 is a standard jackscrew designed for use with D-Sub connectors. It features a 4-40 thread size with a hex width of 4.8mm and a length of 12.70mm (0.500 inches). The jackscrew is made from steel with a zinc plate and yellow chromate finish, providing corrosion resistance and durability. Hardware is included, consisting of nuts and washers as shown in the datasheet.</p><p>&nbsp;</p><p>The 7244-5 is a through-hole mounting component with screw termination. It has a minimum thread depth of 2.6mm. The hex width allows for easy tightening with standard tools. This jackscrew is part of Keystone's standard jackscrew series and is RoHS3 compliant.</p><p>&nbsp;</p><p>Application: This jackscrew is used to secure D-Sub connectors in electronic assemblies, ensuring reliable mating and preventing accidental disconnection. It is suitable for use in computer hardware, industrial controls, and other applications requiring robust connector retention.</p>

<p>The Keystone Electronics 8620 is a PC board card guide designed for securing and aligning circuit boards within enclosures. It is constructed from natural Nylon 6/6, offering good mechanical strength and electrical insulation. The guide features a snap-in mounting style that installs into 0.125" (3.2mm) diameter holes without requiring special tools, allowing for quick and secure assembly.</p><p>&nbsp;</p><p>This card guide has a length of 2.500 inches (63.5mm) and is specifically designed for use with PC cards having a thickness of 0.062 inches (1.57mm). Its narrow profile maximizes board density and promotes optimal airflow within the system. The material is rated UL 94V-2 for flammability, ensuring compliance with standard safety requirements.</p><p>&nbsp;</p><p>The 8620 can be used in either horizontal or vertical orientation, providing flexibility in system design. It is supplied complete with a stainless steel spring pin for reliable retention. This component is RoHS3 compliant and has an MSL rating of 1 (Unlimited).</p>

<p>The Keystone Electronics 3557-15 is a through hole blade fuse holder rated for 30A. It features a vertical orientation and accepts ATC, ATO, and miniature (low profile) blade fuses. The holder uses brass contacts with a tin-nickel finish and PC pin termination for secure PCB mounting. It is designed for single circuit applications and provides reliable fuse retention.</p>

<p>The Keystone Electronics 3080 is a surface mount coin cell battery retainer designed for 12mm coin cells. It supports a single cell and features SMD (SMT) tab termination for PCB mounting. The retainer has a height above board of 3.17mm, making it suitable for low-profile applications. It is compatible with coin cell series 1216, 1220, and 1225.</p><p>&nbsp;</p><p>The retainer is constructed from phosphor bronze with matte tin or tin-nickel plating, as indicated in the manufacturer's datasheet for similar retainers. It is designed to be compatible with wave and reflow soldering processes and can be supplied on tape and reel for automated assembly.</p><p>&nbsp;</p><p>The component is RoHS3 compliant, REACH unaffected, and has an MSL rating of 1 (unlimited). Note that compliance data is unverified and derived from precomputed information. The datasheet provided is generic and does not specifically reference part 3080, so verification is recommended.</p>

<p>The Keystone Electronics 4527 is a fuse holder designed for 5mm x 20mm cartridge fuses. It features a horizontal orientation and through hole mounting with PC pin termination. The holder is rated for 5A at 250V AC and accommodates a single circuit. The base is made of PBT (polybutylene terephthalate) and the contacts are brass with tin plating. This fuse holder is suitable for various circuit protection applications requiring a reliable and compact holder for standard 5x20mm fuses.</p>

<p>The Keystone Electronics 1559-2 is a single end hollow turret terminal designed for through hole mounting with a staking flare termination. The terminal is constructed from brass with a tin contact finish, providing reliable conductivity and solderability. It features a non-insulated design with a single turret.</p><p>&nbsp;</p><p>Mechanical specifications include a length of 4.75mm (0.187"), a diameter of 2.46mm (0.097"), a flange diameter of 3.18mm (0.125"), and a mounting hole diameter of 1.93mm (0.076"). The staking side outer diameter is 1.80mm (0.071") and the board thickness is 1.57mm (0.062").</p><p>&nbsp;</p><p>This turret terminal is suitable for applications requiring a robust, solderable connection point on a printed circuit board. The hollow design allows for component lead insertion and soldering. The staking flare termination secures the terminal to the board during assembly.</p>

<p>The Keystone Electronics 1293 is a heavy duty screw terminal rated for 30 A. It features a 10-32 screw size and is designed for through hole mounting with solder termination. The terminal is constructed from brass with a matte tin plate finish, and the screw is steel with nickel plate. It includes an anti-rotational tab for use with spade terminals and has a low profile design. The screw is not included with this part.</p>