Component Specifier
December 31, 1969 |Estimated reading time: 10 minutes
COMPONENT SPECIFIERTHE MAGAZINE FOR ELECTRONICS ASSEMBLYAs SMT matures and its end products continue to shrink in size but grow in capability, manufacturers are constantly in need of components that satisfy demanding footprint, reliability and placement requirements. Modern manufacturing techniques are useless if a board's components are out of date, perform poorly or fail to satisfy end-user requirements. To assist manufacturers in this search, SMT Magazine presents Component Specifier, a new product section designed to spotlight state-of-the-art active, passive, odd-form and interconnect components.
ACTIVEDevices capable by themselves of controlling voltages and currents to produce gain or switching actions in analog or digital circuits, i.e., reacting to an applied signal, they can change their basic charater.
PASSIVEDevices that do not change their character when electrical impulses are applied, i.e., they provide a single, repeatable reaction.
INTERCONNECTDevices that provide mechanical and electrical union/disconnection and consist of mating plugs and receptacles (sockets) to join PCBs with cables, racks, chassis or other PCBs (stacking); actual connection to the board, however, must be via surface mount-type contacts.
ODD-FORMDevices whose geometrical form factors are singular but not necessarily unique such that they must be manually mounted. Their housings (as opposed to their basic functions) are nonstandard as to shape. Examples include many transformers, hybrid circuit structures, fans/blowers, mechanical switching blocks, etc.
ACTIVEVoltage RegulatorThe S-814 and S-817 Series low dropout, high-precision voltage regulators are capable of operating ceramic, tantalum or electrolytic capacitors. Both series are said to feature low equivalent series resistance (ESR), low current consumption, high output current and high-precision output voltage. The two series have a built-in power-off circuit. Seiko Instruments USA Inc., Torrance Calif.
High-voltage MOSFETThe PowerTrench series of MOSFETs have trench open cell process to voltages of 60, 80, 100, 150 and 200 V, reportedly achieving as much as a 30 percent reduction in RDS(ON). Gate charge is said to be reduced by as much as 20 percent. The series can be used for 48 V input DC/DC modules. Fairchild Semiconductor, Acton, Mass.
Temperature SensingThe IRLBD59N04E is a 40 V, 20 mW, N-channel MOSFET. Temperature sensing is provided by two anti-parallel electrically isolated poly-silicon diodes. The diode's forward voltage falls to approximately 0.4 V with a bias current of 250 mA when the MOSFET reaches its maximum permitted temperature value. International Rectifier, El Segundo, Calif.
PASSIVEPower SupplyThe 1/4 W power supply is a discrete component in a cubic-inch package. While supplying sufficient standby power for 3 to 15 VDC functions, the power supply reportedly is ideal for use in electrical circuits involving sensors. It can be used as a standby power supply. BIAS Power Technology, Roanoke, Va.
Dual TransformersThe 10/100 base-TX dual transformers were developed for voice-over Internet protocol (VoIP) and are optimized for IP phone and switch applications. They support up to 200 mA on standard LAN cabling, eliminating the need for external power. The transformers reportedly are designed to interface with most major IC manufacturers' transceivers and meet IEEE 802.3 standards. All three dual-port interface transformer modules have an operating temperature range of 0° to 70°C, isolation voltage of 1,500 Vrms and a primary inductance of 350 mH. Bel Fuse Inc., Jersey City, N.J.
High-density Power ModulesThe X10 and X15 high-density power modules provide up to 18.75 W per cubic inch in a package measuring 2 x 1 x 0.4". The DC/DC converts have power applications with six output voltage choices from 1.8 to 12 V. The 10 and 15 W modules are available in single and dual output configurations, with reported efficiencies up to 84 percent. Standard features include input undervoltage lockout, overvoltage and overcurrent protection, unlimited short circuit protec-tion, and 1,500 VDC isolation. Lambda Electronics, Melville, N.Y.
Film CapacitorsThe MDC Series film capacitors reportedly are for applications requiring low ESR and ESL. Typical applications include the DC input and output filtering of SMPS and DC/DC converters, 42 V automotive systems and telecom line interfaces for analog and DSL systems. They have capacitance values above 10 mF and voltages up to 630 VDC. Reportedly, their construction eliminates thermal expansion stress on the PCB, and their self-healing characteristics reduce the risk of short circuit. Evox Rifa, Lincolnshire, Ill.
Crystal OscillatorF4106-440 is a CMOS oscillator that reportedly complements Intersil PRISM devices. The crystal oscillator is offered in a 5 x 7 mm ceramic SMD package and offers a stable ±25 PPM. The oscillator has 3.3 V operation, a 1.5 mm profile, frequency of 44.000 MHz and standard operating temperature range from -10° to 70°C. An optional extended temperature range of -40° to 85°C is available. Fox Electronics, Fort Myers, Fla.
Crossover ComponentsThe Xinger surface mount crossover components are available for DC/RF and RF/RF signal crossing. The units work in the 0 to 6 GHz range and reportedly provide a maximum insertion loss of less than 0.1 dB. The components can be mounted by tape-and-reel for high-volume manufacturing. Anaren Microwave Inc., East Syracuse, N.Y.
Multilayer Chip InductorsThe HK series of high Q-value multilayer chip inductors reportedly reduce EMI, increase battery life and improve overall efficiency. The series has 100 percent silver internal conductors and advanced dielectric ceramics. The 0402 case size has DC resistance values from 0.04 to 1.1 W. Available current rates are up to 300 mA. Inductors are available from 1.0 to 120 nH (0402), 1.0 to 220 nH (0603) and 1.5 to 470 nH (0805). The series is available on tape-and-reel. Taiyo Yuden U.S.A. Inc., Schaumburg, Ill.
DIP SwitchThe STDX Series is a Tri-state DIP switch that is offered in 4, 8, 9 and 10 positions. The switches use gold-plated, bifurcated wiping contacts to ensure stable contact at low resistance and offer triple switch settings (+, 0, -) that create 3n possible combinations. The switches reportedly are for coding telecommunications, transceiving, remote control and burglar alarm systems. Bourns Inc., Riverside, Calif.
Four-capacitor ArrayThe Multi-Value Cap array is a four-capacitor array that contains two caps of one value in the second and third positions and two caps of a second value in the first and fourth positions. The resulting symmetry reportedly enables greater design ease and reduces board space by more than 50 percent. AVX Corp., Myrtle Beach, S.C.
InductorsThe DR339-X Series inductors reportedly are space efficient for DC/DC converter and switching power supply applications. The series has an inductance range from 0.47 to 100 mH and a rated current from 19.0 to 0.47 A. The DCR value is 0.0097 to 1.1090 W. The series has a low-profile, flat-top, circular design available in tape-and-reel packaging. Height profiles are as small as 0.197", and overall footprint profiles are from 0.347 x 0.237". Datatronics Romoland Inc., Romoland, Calif.
High-frequency InductorsThe IMC-1008 Series are high-frequency wirewound inductors in 1008 surface mount packages. The series has 34 components, with inductance values ranging from 3.3 to 3,300 nH. For impedance matching, selective filtering and turned circuit applications, the inductors have a footprint measuring 2.5 x 2.0 mm with a 1 mm height profile. The inductors have a maximum DC resistance as low as 60 mW with current ratings up to 600 mA. Vishay Intertechnology Inc., Malvern, Pa.
Wirewound InductorsThe NIC 0805 Series of surface mount, wirewound inductors provides Q values as high as 65 to 500 MHz and 50 to 1,500 MHz. The inductors have SRF ratings up to 7,900 and range from 3.3 to 820 nH, with corresponding current rating from 600 to 180 mA and DCR maximums ranging from 0.08 to 2.35 W. Tolerances are ±10 percent for inductance values of 33 nH and above, and ±20 percent for values below 33 nH. Component dimensions are 2.40 x 1.75 x 1.70 mm. The inductors' core is ceramic material. Devices reportedly resist heat up to 230°C for 10 seconds. Operating temperatures range from -25° to 105°C. Associated Components Technology Inc., Garden Grove, Calif.
PhotodiodeThe Quadrant silicon photodiode has an active area of 50 mm2. It has an element gap of 42 mm. Capacitance per quadrant is 17 pF at 12 V bias. Spectral responsivity is 0.45 A per W at 633 mm with a rise time of 45 ns. Dark current is less than 10.0 nA per segment at 10 V. The package measures 14.5 x 16.6 mm and is 2.20 mm thick. A clear, non-darkening resin protects the photodiode. Surface mounting reportedly can be accomplished by reflow soldering or by conductive epoxy. Pacific Silicon Sensor Inc., Westlake Village, Calif.
Audible Signal DevicesThe Mallory Sonalert II family of surface mount audible signals has case structures designed for reflow process soldering. They are available in tube or tape-and-reel packaging for high-volume automated production environments. The family consists of eight models. Two include built-in drive circuitry and the remaining six reportedly are transducer-only units intended for use with external drive circuitry. North American Capacitor Co., Indianapolis, Ind.
ThermistorsThe PTH9C is an 0603 package thermistor. It can be used for temperature sensing in power transistors, power diodes and power IC. The component also reportedly can be used for high-density mounting and allows for a wide variation of temperature sensing. It is said to have resistance to electrostatic discharge, mechanical vibration and shock. Murata Electronic North America, Smyrna, Ga.
Toggle SwitchThe 200B Series toggle switch line has UL 94-V0 materials with an internal O-ring seal reportedly designed to withstand a wash process. With electrical ratings of 0.4 VA maximum at 20 VAC or DC maximum, the switches are available with gold terminals standard. They are packaged in tape-and-reel quantities of 500 per reel. E-Switch, Brooklyn Park, Minn.
Film ChipsThe FCN film chip capacitors reportedly will not crack and can withstand solder reflow. Construction is stacked metallized polyethylene napthalate film that results in a low ESR and good high-frequency performance. Capacitance values range from 0.001 to 1.0 mF, covering standard voltage rating of 16, 50, 100 and 250 VDC. Standard capacitance tolerances are ±5 percent for 16, 50 and 100 VDC, and ±10 percent for 100 and 250 VDC. Operating temperature ranges are up to 105°C for 16, 50 and 100 VDC, and 85°C for 100 and 250 VDC ratings. CDE, New Bedford, Mass.
Color SensorThe S7505 three-color sensor is designed with three narrow band filters mounted on a single chip four-element detector. The sensor reportedly can provide distinct color separation for red, green and blue. It measures 9.4 x 2.0 x 9.0 mm. Dark current is 10 pA and sensitivity is 0.23 A per W at 460 nm for the blue filter, 0.28 A per W at 530 nm for green filter, and 0.45 A per W at 660 nm for the red filter. It has an operating temperature of -10° to 60°C. Hamamatsu Corp., Bridgewater, N.J.
INTERCONNECTSeven-pin ConnectorMMC connectors are for use in the consumer industry and data collection applications. The seven-pin connector is said to meet the specifications of the MMC Association. The nine-pin version reportedly represents the first MMC/SD card connector. The connector is molded of LCP and uses selectively gold-plated phosphor-bronze contacts rated for 10,000 mating operations. The connectors are offered in trays or embossed tape for automatic insertion equipment. JST Corp., Waukegan, Ill.
Terminal BlocksThe CTF Series of plugs and CTM Series of headers are available in 3.5 or 3.81 mm pin spacing. They reportedly are suitable for connect and disconnect use in circuit or PCB applications. Both series are available in a straight plug or a screw flange configuration. The header can be keyed to prevent incorrect mating or upside-down plugging. Blockmaster Electronics Inc., Elk Grove Village, Ill.
Low-profile ConnectorThe 64-pin G Series DIN 41612 connector is available in a low-profile package. The connectors are rated at 6 A per pin with an operating voltage of 125 V. The connector body is made of PBT with an integrated coding provision. 2E SysCom Inc., Waltham, Mass.
Flexible InterfaceThe FC1 Series flex cable sockets reportedly will mate with flat flex cable and flexible printed circuits as well as the company's flex cable jumpers. They are available in both vertical and horizontal designs with solder weld tabs provided for increased mechanical strength in horizontal applications. Five through 25 I/Os on 1mm pitch are available. Samtec, New Albany, Ind.
ECA Launches Component Web ResourceThe Electronic Components, Assemblies & Materials Asso-ciation (ECA) launched a Web resource center, www.ec-cen tral.org, dedicated solely to the electronic component industry. ECA is the electronic components sector of the Electronic Industries Alliance (EIA). The Web site is a free portal to information, news, market research, manufacturers and suppliers, products, events, technology advances, and programs and services related to electronic components.
Professionals from every facet of the component industry can take advantage of the site. Customers, resellers and distributors can use it to research companies offering products and services they need for their businesses. For electronic component vendors, it serves as an e-business marketing tool to manage knowledge, make informed decisions and plan future directions. The industry can use it as a forum for exchanging information and conducting business.
The site encompasses:
- Online statistics and trends, access to detailed reports and publications, and a library of studies from market research firms
- Direct links to product listings from vendors in specific industry categories
- News about business, technology, distribution and people affecting the electronic components industry, with links to online publications providing the full stories
- A search engine that allows interactive access to the site's comprehensive database
- A calendar of conferences, seminars and industry events with online registration
- Detailed information about ECA programs and services.