Keystone Electronics

<p>This scored turret terminal board from Keystone Electronics is designed to reduce production costs by eliminating tooling and setup charges associated with custom boards. It features 25 positions arranged in a single row with a 0.218" (5.54mm) pitch.</p><p>&nbsp;</p><p>Constructed from XP Phenolic material (MIL-1-24768/20 Type XP natural), the board offers reliable performance up to 121°C. The terminals are made of brass with tin plating, ensuring good solderability and corrosion resistance. Each terminal is staked and tinned for easy soldering.</p><p>&nbsp;</p><p>The board measures 198.4mm x 7.9mm x 1.57mm (7.812" x 0.312" x 0.062") and is scored into 5 sections, allowing for easy separation. It is designed for through-hole mounting with single-end double turret terminals.</p><p>&nbsp;</p><p>This turret board is ideal for prototype development, point-to-point wiring, and production applications where a standardized board can be used. It is RoHS compliant and REACH unaffected.</p>

<p>The Keystone Electronics 1025 is a coin cell holder designed for 1 or 2 batteries of the 2430 (2 cells) or 2450 (1 cell) series. It accommodates coin cells with a diameter of 24.5mm. The holder features an open style with PC pin termination for through hole PCB mounting. The base is made of PBT material rated UL 94V-0, and the contacts are spring steel with a tin-nickel plate finish. The assembly height above the board is 8.10mm (0.319 inches). It operates reliably over a wide temperature range from -50°C to 145°C. This holder is suited for applications requiring a robust and polarized coin cell retention solution.</p>

<p>The Keystone 3557 is a vertical fuse clip designed for standard blade fuses, including ATC, ATO, and Miniature (ATM) types. It is rated for 30A at 500V AC with a UL temperature range of -50°C to +145°C. The contacts are made of brass with a tin-nickel finish, and the insulator is nylon with a UL 94V-0 flammability rating.</p><p>&nbsp;</p><p>This through hole mount component uses PC pin termination for reliable soldering. The clip holds the fuse securely even after multiple insertions and maintains its position during wave soldering. The design prevents solder wicking and withstands shock and vibration, making it suitable for demanding applications.</p><p>&nbsp;</p><p>Ideal for power distribution and circuit protection in industrial, automotive, and consumer electronics, this fuse clip offers a compact vertical footprint on the PCB. No additional hardware is required for installation.</p>

<p>The Keystone Electronics 1287-ST is a standard male quick connect tab featuring a tab width of 0.250" (6.35mm) and a tab thickness of 0.032" (0.81mm). The tab length is 0.312" (7.92mm) with an overall length of 14.02mm (0.552"). This non-insulated terminal is constructed from brass with a tin-plated finish, ensuring reliable conductivity and corrosion resistance.</p><p>&nbsp;</p><p>Designed for through hole mounting with a solder termination style, the 1287-ST requires a mounting hole diameter of 0.052" (1.3mm). The contact material thickness is 0.032" (0.80mm). This quick connect tab is suitable for applications requiring a secure, solderable connection in a compact form factor.</p><p>&nbsp;</p><p>The part is RoHS compliant and REACH unaffected, with an MSL rating of 1 (unlimited). It is manufactured by Keystone Electronics, a trusted supplier of interconnect components and hardware.</p>

<p>The Keystone 3545 is a female quick disconnect terminal designed to accept 0.110" x 0.020" male tabs. It features a horizontal entry orientation with through hole solder mounting. The contact is made from brass with a tin-nickel plate finish, providing reliable electrical connection and corrosion resistance. This non-insulated terminal is suitable for applications where insulation is not required, such as in power distribution or control circuits. The terminal is RoHS compliant and meets industry standards for quick disconnect connectors.</p>

<p>The Keystone Electronics 3034 is a surface mount coin cell retainer designed for single 20mm diameter batteries. It supports multiple battery series including 2020, 2025, and 2032. The retainer features SMD (SMT) tab termination and is intended for PCB or surface mount installation. Height above board is 0.160" (4.06mm). The contact material is phosphor bronze with a tin-nickel plate, and the plating is matte tin for lower soldering temperatures. This retainer is RoHS3 compliant and available on tape and reel for automated assembly. The solder tails are located outside the retainer body to facilitate visual inspection of solder joints.</p>

<p>The Keystone Electronics 3527 is a fuseholder block designed for 5mm x 20mm cartridge fuses. It features a snap-in design for wave soldering and is constructed with a flame retardant FR-4 base (UL rated 94V-0) and brass, tin-plated clips. The holder is rated for 6.3 Amps at 250V AC and offers a low profile, space-saving design. An optional cover (Cat. No. 3527C) is available to protect and insulate the fuse. The holder is through hole mounted with PC pin termination, making it suitable for PCB applications requiring reliable circuit protection.</p>

<p>The Keystone 7792 is a screw terminal designed for PCB mounting with a right-angle configuration. It features four pins with M4 screw threads, providing a secure connection for power distribution. The terminal is rated for 15 amps and uses brass terminals with matte tin plate finish.</p><p>&nbsp;</p><p>The screw is made of brass with nickel plate, and the terminal includes a snap-fit mounting design with six legs for stability, as noted in the datasheet. The screw is not included with the part. The terminal material is .80 brass with matte tin plate.</p><p>&nbsp;</p><p>This component is suitable for applications requiring a compact, heavy-duty screw terminal for PCB integration. The right-angle orientation allows for efficient board layout. The snap-fit legs ensure secure attachment to the PCB.</p>

<p>The Keystone Electronics 502 is a through-hole coin cell battery holder designed for single 16mm lithium coin cells. It accommodates battery series 1612, 1616, and 1620. The holder features PC pin termination for direct soldering to a PCB and a through-hole mounting style. The base is made of high-temperature nylon 46 with a UL 94V-0 flammability rating, suitable for use in environments requiring robust material performance. The contacts are phosphor bronze with gold flash plating, ensuring reliable low-resistance connections. The height above board is 0.285 inches (7.24mm). The operating temperature range spans from -50°C to 145°C, making it suitable for a wide variety of industrial and commercial applications. Common uses include memory backup, power transfer, and battery retention in electronic devices.</p>

<p>The Keystone Electronics 575-8 is a female banana jack with a non-insulated design for direct panel mounting via swage mount. The body is constructed from brass with a nickel plate, and the terminal is brass with tin plate. This jack accommodates a standard banana plug and is terminated by soldering.</p><p>&nbsp;</p><p>Rated for 15 amps, the 575-8 fits panels up to 0.375 inches thick. Its overall length is 0.350 inches. The non-insulated design provides a compact, low-profile solution for test equipment, breadboards, and custom panel layouts where signal integrity and reliable current handling are required.</p>

<p>The Keystone Electronics 1573-3 is a single end turret terminal designed for through hole mounting. It features a double turret configuration with staking flare termination for secure board attachment. The terminal has an overall length of 4.72mm (0.186 inches) with a flange diameter of 2.36mm and turret diameter of 1.27mm. It is suitable for board thickness of 2.36mm (0.093 inches) and requires a mounting hole diameter of 1.93mm (0.076 inches). The contact is made of brass with a bright tin finish for excellent solderability and extended shelf life. This non-insulated terminal is RoHS3 compliant and has an MSL of 1 (unlimited). It is commonly used in terminal boards and custom assemblies.</p>

<p>The Keystone Electronics 504 is a surface mount coin cell battery holder designed for 16.0mm diameter cells in the 1632 series. It accepts a single cell and uses SMD (SMT) tab termination for direct PCB mounting. The housing is constructed from high temperature Nylon 46 with a UL 94V-0 flammability rating. Contacts are made of phosphor bronze with a gold flash plating, ensuring reliable electrical connection and corrosion resistance. The holder has an above-board height of 0.212" (5.38mm) and an open frame design for easy battery insertion and replacement. It is rated for an operating temperature range of -50°C to +145°C, making it suitable for industrial and automotive backup power applications.</p>

<p>The Keystone Electronics 3013 is a through-hole coin cell retainer designed for single 16.0mm diameter coin cells. It accommodates battery series 1612, 1616, 1620, and 1632. The retainer is constructed from 0.010" (0.25mm) phosphor bronze with a tin-nickel plate finish, suitable for high-temperature soldering processes. The termination style is PC pin, and the height above board is 0.156" (3.96mm). This retainer is available in tape and reel packaging for automated assembly. The design includes solder tails located outside the retainer body for easy visual inspection of solder joints.</p>

<p>The Keystone Electronics 101 is a through-hole coin cell battery holder designed for a single 20mm coin cell, compatible with series 2016, 2020, 2025, and 2032 batteries. The holder uses a raised mounting design that allows components to be placed underneath, conserving PCB space.</p><p>&nbsp;</p><p>It features PC pin termination for reliable soldered connections. The contacts are made of spring steel with a tin-nickel plate finish, ensuring consistent spring tension and low contact resistance. The base material is PBT plastic rated UL 94V-0 for flammability.</p><p>&nbsp;</p><p>The holder operates over a wide temperature range from -50°C to 145°C. It is designed for applications such as PC/104 systems where board space is at a premium, and its notched slots facilitate quick battery insertion and replacement.</p>

<p>The Keystone Electronics 577 is a female RCA phono jack designed for through-hole printed circuit board mounting. It features a mono signal line configuration with 2 conductors and 2 contacts, making it suitable for standard audio interconnect applications. The connector is unshielded and does not contain an internal switch.</p><p>&nbsp;</p><p>The mating diameter is 3.20mm inner diameter and 9.00mm outer diameter, conforming to the RCA standard. Termination is via a kinked pin for secure soldering to the PCB. The insulation color is red, aiding visual identification. Contact material is brass with tin plating, and the shell is steel with tin plating, providing reliable electrical performance and corrosion resistance.</p>

<p>The Keystone Electronics 1400R is a red insulated shorting jack designed for reliable circuit connection and configuration. This component features a closed top grip type with 2 positions arranged in a 1x2 grid on a 10.16mm (0.400") pitch.</p><p>&nbsp;</p><p>Constructed with a glass-filled polypropylene (PP) housing in red, the 1400R provides robust insulation and durability. The contacts are finished with gold plating for reliable electrical performance and corrosion resistance. The component has a height of 12.70mm (0.500") and is designed for through hole mounting with pin leads.</p><p>&nbsp;</p><p>This shorting jack is suitable for use in test equipment, programming headers, and configuration jumpers where a secure, insulated connection is required. The closed top design protects the contacts and provides a positive grip for insertion and removal.</p>

<p>The Keystone Electronics 3551 is a non-insulated female quick connect terminal designed for reliable wire-to-tab connections. It accepts a 0.187" (4.75mm) tab width with a 0.032" (0.81mm) thickness, making it suitable for standard quick disconnect applications.</p><p>&nbsp;</p><p>The terminal features a brass contact material with a tin finish, providing good conductivity and corrosion resistance. It is designed for through hole mounting with solder termination, ensuring a secure mechanical and electrical connection to the PCB.</p><p>&nbsp;</p><p>With an overall length of 10.67mm (0.420"), this compact terminal is ideal for space-constrained designs. The non-insulated construction allows for use in applications where insulation is not required or where additional insulation can be applied separately.</p>

<p>The Keystone Electronics 3098 is a surface mount battery retainer designed for single 6.8mm coin cells. It features SMD (SMT) tab termination with a matte tin finish on a phosphor bronze contact. The retainer has a height above board of 2.90 mm (0.114 inches) and is compatible with battery series DR77, V13AT, and 377.</p><p>&nbsp;</p><p>This retainer is available in bulk or tape and reel packaging (24 mm tape width, 12 mm pitch, 13 inch reel, 1000 pieces per reel). The SMT solder tail incorporates a flow-hole design for increased joint strength during reflow soldering.</p><p>&nbsp;</p><p>The part is RoHS compliant as indicated on the datasheet. It is intended for applications requiring a secure, low-profile battery contact in portable electronics.</p>

<p>The Keystone Electronics 1065 is a coin cell battery holder designed for single 20mm coin cells. It accepts batteries from the 2012, 2016, 2020, 2025, and 2032 series. The holder features a through hole PCB mounting style with PC pin termination for secure soldering. It is rated for an operating temperature range of -50°C to 145°C. The holder has an open design for easy battery insertion and removal. It is RoHS3 compliant and has a moisture sensitivity level of 1 (unlimited). This holder is suitable for applications requiring a reliable battery connection in portable electronics, memory backup, and wireless devices.</p>

<p>The Keystone Electronics 4900 is a male quick connect tab terminal designed for solder connection to a printed circuit board. It features a standard 0.187" (4.75mm) tab width, 0.020" (0.51mm) tab thickness, and 0.250" (6.35mm) tab length. The overall length of the terminal is 14.48mm (0.570"). The contact is made of brass with a tin finish, providing good conductivity and solderability. The mounting hole diameter is 1.1mm (0.043") and the material thickness is 0.50mm (0.020"). This terminal is non-insulated and uses through hole mounting with solder termination. It is RoHS3 compliant (unverified) and has a moisture sensitivity level of 1 (unlimited). The part is cross-referenced as DigiKey 36-4900-ND. Typical applications include power supply connections, battery connectors, and other quick disconnect interfaces in electronic assemblies.</p>

<p>The Keystone Electronics 3550-2 is a single-circuit blade fuse holder designed for through-hole mounting on PCBs. Its horizontal orientation allows for low-height clearance applications, making it suitable for space-constrained designs. The holder fully insulates the fuse clips to protect against shorting and ensures proper spacing with polarized legs.</p><p>&nbsp;</p><p>Rated at 20A continuous current and 500V AC, the 3550-2 accommodates standard ATC and ATO blade fuses with dimensions of 0.75" L x 0.2" W (19.1mm x 5.1mm). The brass contacts feature a nickel finish, and the insulator is molded from nylon rated UL 94V-0. The UL temperature rating spans from -50°C to +145°C.</p><p>&nbsp;</p><p>The PC pin termination and through-hole design provide reliable mechanical retention during wave soldering. The holder is polarized to ensure correct orientation of the fuse clips onto the board, reducing assembly time. This fuse holder is commonly used in industrial control, power distribution, and automotive electronics where horizontal fuse insertion is preferred.</p>

<p>The Keystone Electronics 1362-2 is a PC pin connector designed for through hole mounting with a swage termination. It features a single end terminal style and a brass contact material with a gold finish of 10.0 microinches. The overall length is 10.16mm (0.400 inches) with a flange diameter of 2.36mm (0.093 inches) and a mounting hole diameter of 1.70mm (0.067 inches). This non-insulated pin is suitable for applications requiring a reliable solderless press-fit or swage connection to a printed circuit board with a thickness of 1.57mm (0.062 inches). The mating pin diameter is 1.02mm (0.040 inches). The part is RoHS3 compliant and has an MSL of 1 (unlimited).</p>

<p>The Keystone Electronics 1290 is a rugged 9V battery holder designed for single-cell applications. It features a durable aluminum frame with solder lug terminals for secure chassis mounting. The holder accommodates any standard 9V battery, eliminating the need to specify an exact battery brand or shape.</p><p>&nbsp;</p><p>Key specifications include an operating temperature range of -40°C to +130°C, making it suitable for harsh environments. The nickel-plated steel contacts ensure reliable electrical connection and proper polarity. The holder measures 53.9 mm in length, 22.2 mm in width, and 19.1 mm in height.</p><p>&nbsp;</p><p>Typical applications include memory backup in PLCs, telecommunications, data processing, security systems, clocks, radios, toys, and appliances. The open holder design allows easy battery insertion and replacement. The 1290 is part of Keystone's aluminum 9V battery holder series, known for withstanding severe shock and vibration.</p>

<p>The Keystone Electronics 2461 is a single-cell AA battery holder designed for chassis mounting. It comes with 6-inch (152.4 mm) wire leads terminated with #26 AWG tinned copper wire (UL/CSA1007). The holder body is made of polypropylene, providing durability and electrical insulation. Contact springs are constructed from nickel-plated spring steel, and the pins are brass with nickel plating, ensuring reliable electrical connections. The open holder style allows easy battery insertion and removal. This holder is part of Keystone's 2460 series of economical battery holders, which feature self-adjusting contact springs to accommodate variations in battery length and maintain low contact resistance. It is suitable for applications requiring a secure, vibration-resistant battery connection.</p>

<p>The Keystone Electronics 3557-2 is a blade-type fuse block designed for standard ATC, ATO, and Miniature (Low Profile) blade fuses. It is rated for 30 A at 500 V AC (UL) and features a single circuit with vertical orientation. The block uses through-hole mounting with PC pin termination for secure PCB attachment.</p><p>&nbsp;</p><p>The insulator is made of nylon with a UL 94V-0 flammability rating, ensuring reliable performance in demanding environments. The contacts are brass with a tin-nickel plating, providing good conductivity and corrosion resistance. The operating temperature range is -50°C to +145°C.</p><p>&nbsp;</p><p>Design features include a fuse retention system that holds the fuse securely even after multiple insertions, and a design that prevents solder wicking during wave soldering. The block withstands shock and vibration, making it suitable for automotive, industrial, and other high-reliability applications. Compatible fuse series include ATC, ATO, and Miniature (Low Profile) (ATT).</p>

<p>The Keystone Electronics 3564 is a blade fuse clip designed for use with miniature (ATM) blade fuses. It features a through hole mounting style with PC pin termination and a vertical orientation. The clip is rated for 15 A at 500 V AC and accepts fuses from Littelfuse Mini 297/997 series, Bussmann ATM series, or equivalents.</p><p>&nbsp;</p><p>Constructed with 0.30 mm thick brass contacts with a matte tin finish and a nylon insulator rated UL 94V-0, the 3564 operates over a temperature range of -50°C to +145°C. The single-circuit clip provides a compact, low-profile solution for PCB fuse protection.</p>

<p>The Keystone Electronics 1374-1 is a non-insulated PC pin connector designed for through hole mounting with a swage termination. It features a 0.030 inch (0.76 mm) pin diameter and is finished with 10 microinches (0.25 micrometers) of gold plating over a brass contact material for reliable conductivity and corrosion resistance.</p><p>&nbsp;</p><p>The pin has a flange diameter of 0.094 inches (2.39 mm) and mounts into a 0.067 inch (1.70 mm) diameter hole, accommodating a board thickness of 0.032 inches (0.81 mm). The overall pin length is 0.230 inches (5.84 mm), while the portion above the board is 0.051 inches (1.3 mm) based on datasheet information.</p><p>&nbsp;</p><p>This component is typically used in applications requiring a single point connection on a printed circuit board. The gold finish ensures low contact resistance and long-term reliability in moderate environments.</p>

<p>The Keystone Electronics 757 is a rubber grommet designed for cable and wire management. It features an inside diameter of 0.875" (22.22mm) and an outside diameter of 1.625" (41.3mm). The grommet has a panel cutout diameter of 1.250" (31.75mm) and accommodates a panel thickness of 0.062" (1.57mm). Its overall height is 0.437" (11.1mm).</p><p>&nbsp;</p><p>Constructed from BUNA N (nitrile) rubber in black, this grommet provides electrical insulation and mechanical damping for wires and cables routed through panels. It is RoHS compliant and suitable for use in a variety of electronic enclosures and chassis.</p><p>&nbsp;</p><p>The 757 grommet is commonly used to protect cables from sharp edges and to reduce vibration and noise. Its circular panel cutout and press-fit design allow for straightforward installation without additional hardware.</p>

<p>The Keystone Electronics 139 is a single-cell AA battery holder designed for rugged yet lightweight applications. The open-style holder features a chassis mount configuration with solder lug terminals for secure wiring connections. Constructed with an aircraft grade aluminum frame and battery clips, and brass contacts with nickel plating and brass tin-plated lugs. Insulating washers are moisture-proof resin-impregnated fiber. The holder is RoHS3 compliant and suitable for use with major battery manufacturers including Energizer, Duracell, Panasonic, Sanyo, Varta, Rayovac, and Tadiran.</p>

<p>The Keystone Electronics 629 is a contact spring (coil style) battery clip designed for through hole PCB mounting. It terminates with PC Pins for secure soldered connections.</p><p>&nbsp;</p><p>The contact accommodates multiple battery cell sizes and stands 9.64mm above the board surface. Its spring tension design ensures reliable contact with the battery terminal while withstanding shock and vibration.</p><p>&nbsp;</p><p>This component is commonly used in battery-powered devices requiring a compact, low-profile contact solution. The through hole mounting provides mechanical strength suitable for applications where the battery may be replaced or the device experiences movement.</p><p>&nbsp;</p><p>The part is marked as RoHS3 compliant, REACH unaffected, and has MSL level 1 (unlimited floor life). These compliance designations are unverified and should be confirmed from the manufacturer.</p>

<p>The Keystone Electronics 584 is a female mono phono (RCA) jack designed for printed circuit board mounting. It features a through-hole termination with kinked pins for secure soldering. The connector accepts standard RCA plugs with a 3.20mm inner diameter and 9.00mm outer diameter.</p><p>&nbsp;</p><p>This unshielded jack has two conductors and two contacts, with a brass contact material and tin plating. The steel shell is also tin plated. The insulation color is white. It does not contain any internal switches.</p><p>&nbsp;</p><p>The 584 is suitable for audio signal applications where a standard RCA connection is required. Its compact design allows for direct PCB insertion, eliminating the need for wiring.</p>