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New Components, Connectors, and Subassemblies
December 31, 1969 |Estimated reading time: 5 minutes
Following are the new surface mount and insertion components, as well as off-the-shelf subassemblies, and various connectors available from companies such as Laird, AVX, Amphenol, FDK, and others. The products suit harsh environments, consumer applications, and other target markets.
Bluetooth Modules for Medical ProductsThe BTM520 and BTM411 Bluetooth modules are designed for medical equipment manufacturers. A Health Device Profile created by the Medical Working Group of the Bluetooth SIG will be a key requirement for manufacturers designing products for Continua Alliance Approval. Incorporating pre-approved Bluetooth stacks, these modules meet the new Health Device Profile for minimal design disruption. For data applications, the BTM411 is an integrated subminiature Bluetooth data-oriented module based on Cambridge Silicon Radio's BC04 chipset. Incorporating a full Bluetooth stack and supporting a serial port profile, the module provides a UART interface and comprehensive AT command for interface to a host processor. For DSP applications, the BTM520 series offers a high-gain, multilayer ceramic antenna (+10 dBm output). The 32-bit Kalimba DSP, running at 64 MIPS, allows on-board implementation of a variety of advanced applications. Both modules are based on the Version 2.1+EDR Bluetooth standard, with Secure Simple Pairing. They support -30° to +70°C operation. Laird Technologies Inc., www.lairdtech.com/wireless.
AVX's connectors.Wire-to-board ConnectorsThe expanded 9175 series of discrete wire-to-board insulation displacement connectors (IDC) includes two larger formats. The 9176 and 9177 series have been added to now include 1824 AWG and 1420 AWG, respectively. The connectors are tape-and-reel packaged for high-volume SMT placement. The individual wires are then located over the top of the contact and pressed into the slot via hand or arbor-type press-in tools. This process allows the contact tines to pierce the insulation jacket, creating a gas-tight connection, while using plastic insulator features to grab the insulation and provide strain relief on the final assembly. There is no wire stripping or preparation prior to termination. Contact material is phosphor-bronze, with three re-terminations achievable for each contact. The connectors offer a smaller footprint and are end-to-end stackable. The discrete wire IDC connectors are manufactured with high-temperature nylon material to withstand RoHS reflow processes and high working temperatures. They are based on automotive-level temperature and vibration specifications, available in two- and three-position configurations. In addition to standard wire gauges, the connectors have been tested to a wide range of insulation composition and diameters. They suit LED, solar, automotive, and a range of other applications. The parts have a voltage rating of 125 V. AVX Corporation, www.avx.com.
Surface Mountable GDTsTo protect high-speed xDSL modems, splitters, DSLAM equipment, AIO printers, base stations, and security systems from damage caused by overvoltage events, small-form-factor surface mount GDTs are available in an expanded range of sizes and surge ratings. Compliant with GR-1089 Core, ITU K.20/K.21, and TIA, the GDTs are available in two- and three-electrode versions. Key device parameters include voltage ranges from 75 to 600 V, capacitance values as low as 0.5 pF, and sizes from 3 to 8 mm. GDTs help protect sensitive telecom equipment from damage caused by transient surge voltages that may result from lightning strikes and equipment switching operations. Tyco Electronics Ltd., www.tycoelectronics.com.
High-capacitance Multilayer Ceramic CapacitorsThe high-capacitance devices in the X7R and X5R series are packaged in 0402 to 1812 case sizes with a capacitance value range of 100 pF to 100 µF. These devices can replace polarized tantalum and electrolytic capacitors, reportedly offering improved reliability performance with lower power. Typical applications include digital circuits, power supply bypass capacitors, LCD modules, smoothing capacitors, and input-output filters in DC/DC converters. They are available with non-standard plating finishes, such as gold, and can be stacked to increase capacitance for a given board pad space without imposing a height restriction. Various standard and custom leadframes are available. NOVACAP, a Dover company, www.novacap.com.
SMD Insertion of Silicone KeysAbatek offers next-generation SMD silicone keys for design, prototyping, and development time improvements. The silicone keys have typical tactile feeling, the lighting can be integrated into the key, and the stroke and height of the key can be adjusted to the production requirements. Differences are reduced time for acquisition, higher flexibility during product design, and the possibility of fully automatic assembling with a SMD pick-and-place machine. Keys also can be fitted with an additional capacitive switching function. Essemtec optimized pick-and-place machines to place these silicone keys. Automatic insertion of all entry key types is possible on FLX-, CSM-, and Pantera-series system. Tape feeders with enough pocket depth are standard; flexible tape strip feeders are available for prototyping. The maximum component height is 15 mm; the clearance zone below the printed board is up to 40 mm. The silicone keys are processed with a vacuum tool that picks up the entry keys safely from the belt or the pallet and places them on the PCB or flex board. Essemtec's vacuum tool can be used for all types of Abatek's prototypes. Keys with different heights can be placed with the same tool on the same product. The keys are measured on-the-fly by the laser centering system and inserted with the same precision as other SMD components. Abatek International AG and Essemtec, www.essemtec.com.
Ruggedized ConnectorsRoHS-compliant, rugged connectors that provide up to 1500 A in signal, control, and power applications, the Star-Line EX connectors suit harsh environments and are certified for use in Zone 1-llc. Star-Line EX electrical connectors provide electrical, design, and instrumentation engineers with a reportedly fast and safe interconnection to modular equipment. They are available with solder, crimp, or pressure terminals. In addition to stainless steel or brass housings, the Star-Line EX series comes in lightweight aluminum housings precision-machined from high-tensile-strength bar stock and finished with a hard-anodized coating to 40 points on the Rockwell C scale. The series features a dielectric strength of 1,800 V and heat resistance up to 399°C. Contacts are copper with standard silver plating; gold plating is available. Amphenol Industrial, www.amphenol-industrial.com.
High-power DC/DC ConverterThe Sensei Series of isolated DC/DC converters now includes a high-power regulated quarter brick converter that provides 25-A output current (300 W) with minimal derating at elevated temperatures. The FPQR48T01225 converter is targeted for IBA and DPA in telecommunications, WiMAX, data processing, computing, and storage applications that require a regulated 12 V distribution bus. The FPQR48T01225 converter operates from a 36 to 75 Vdc input and provides 12 Vdc output. It delivers efficiency in excess of 92.5%. Package size is 57.9 × 36.8 × 14.1 mm industry-standard quarter brick footprint and pin-out. As an available option, the FPQR48T01225 converter can support parallel operation of multiple units without external components, with a load sharing accuracy within ±10%. Standard features include input under-voltage lockout (UVLO), output over-current protection (OCP), output over-voltage protection (OVP), over-temperature protection (OTP), remote output voltage sense, and output voltage trim using industry-standard trim equations. All Sensei Series products are RoHS compliant. FDK Corporation, www.fdk.com.