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Component Specifier
December 31, 1969 |Estimated reading time: 10 minutes
COMPONENT SPECIFIERthe magazine for electronics assembly
As 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 Modern manufacturing techniques are useless if a board's components are out of date, perform poorly or fail to satisfy end-user requirements.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-FORM (Not Shown)Devices 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.
ACTIVE
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Clock Timer
F1100CS is a high-frequency data clock series reportedly intended for tight stability, low-jitter applications. It is a surface mount package, hermetically sealed crystal with low jitter: 5 psec rms typical at 100 MHz. It has a rise and fall time of 3 nanoseconds, duty cycle of 45/55 percent available, tristate output, and is available in frequencies ranging from 65 to 105 MHz. It can be used for phase-locked loops, clock recovery, reference signal tracking and synthesizers. Champion Technologies Inc., Franklin Park, Ill.
Monolithic MOSFET
SyncFET is an integrated Schottky and MOSFET in a single die. A titanium Schottky barrier diode is integrated with a vertical DMOS PowerTrench MOSFET in a monolithic die. Reportedly, integrating the Schottky directly into the silicon allows the entire package area to be used for the MOSFET, resulting in a reported performance improvement of almost 50 percent more than the typical multi-die combo solution. Integration also is said to reduce EMI/RFI because high-frequency currents do not have to flow through bond wires and PCB traces between an external Schottky and the MOSFET. Fairchild Semiconductor International, Sunnyvale, Calif.
PASSIVE
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Directional Couplers
This series of surface mount directional couplers can be used for RF circuitry, mobile radio and satellite TV technologies. The GLSN series provides a selection of coupling values from 6 to 16 dB. The 5.7 x 5.7 x 4.0 mm design uses a dual aperture ferrite core on a ceramic base. Model number GGLSN16D152 is a 16 dB coupler with a maximum loss at 20 MHz of 0.6 dB, and 3 dB band limits of 0.5 to 1,500 MHz. All models have an operating temperature range of -40° to 125°C. The couplers are said to be suitable for automatic insertion into circuits assembled using reflow or vapor phase soldering. Terminals are formed from the ends of the coil windings, eliminating solder joints between the coil and the terminals that could open from circuit assembly heat. Soldering heat resistance is 230°C for 5 seconds. Sprague-Goodman Electronics Inc., Westbury, N.Y.
Incandescent Lamps
The CSD line of incandescent lamps is an alternative to blue or white LEDs. Lamp profiles are as low as 5.5 mm, and the line is available on reels for automated processing. The lamps feature two- or three-piece construction, the latter with an integral silicone filter cap. These filter caps reportedly can be color matched to virtually any standard, and are designed to withstand high-temperature reflow processes up to 260°C. Available in multiple sizes and brightness levels (up to 12 lumens) and from 5 to 28 V, the series is designed to withstand the shock and vibration of automated assembly. Right-angle models are also available, with or without filter caps. JKL Components Corp., Pacoima, Calif.
Microwave Capacitors
The 600 Series capacitors are said to offer the lowest ESR in class; typically 80 mW at 1 GHz. It is designed around RF and microwave applications. With up to 100 pF in an 0603 size, the series has a rated voltage of 250 V. All parts are available laser marked and in tape-and-reel. American Technical Ceramics, Huntington Station, N.Y.
SMD Crystal
FX532A crystal measures 5.0 x 3.2 mm with a profile of 1.00 mm. It has a reported frequency range and a fundamental operating mode from 14 to 40 MHz. The crystal has a frequency tolerance and frequency stability of ±100 PPM, and an operating temperature range of -10° to 60°C. Other tolerances and stabilities are available. Fox Electronics, Fort Myers, Fla.
DIP Switches
These surface mount mechanical DIP switches are for manually programming configurations on PCBs. Applications are said to include computers, test equipment, process controls, communications equipment, ground support and instrumentation. The 7300 Series is side-actuated with two to eight positions available in even increments. 7400 Series is top-actuated, standard pitch, with two to 12 positions available in even increments for single pole throw. 7500 Series is top-actuated, half pitch with two to 10 positions available in even increments for single pole single throw. AMP Incorporated, Harrisburg, Pa.
Variable Capacitors
The 1500 Series Eco-Trim variable capacitors reportedly are low-cost, high-performance air capacitors for applications where high Q and cost are necessary. This series can be used for impedance matching, filter tuning, interstage coupling and antenna tuning. The series has a capacitance range of 1 to 10 pF with a rated voltage of 250 VDC and an operating temperature range of -65° to 125°C. They are available in five mounting styles for PC and surface mount applictions. Johanson Manufacturing, Boonton, N.J.
VCR Chip Resistors
HVC Series chip resistors have VCR ratings less than 1 ppm per V. They can be used in high-voltage applications such as power supplies and instrumentation. Chips are said to be rated at 30 MW ±0.25 percent, with VCR less than 1 ppm per V and TCR less than 25 ppm per c. They have a 2,500 V rating in air (7,500 V potter). Sizes range from 2512 to 0202 and custom sizes also are available. OhmCraft Inc., Honeoye Falls, N.Y.
Terminator Networks
Three series of terminator networks are thin film-on-silicon designed for terminating multiple lines per package, including local bus lines and SCSI bus lines. The RBB high-speed bussed terminator networks reportedly are designed for use in the termination of local bus lines in high-performance computer systems. These networks terminate up to 22 lines while providing low parasitic capacitance and inductance in a 24-pin surface mount network. The RDA Series dual terminator networks can be used for SCSI termination. It is housed in a 20-pin surface mount package. RDB differential terminator networks are used in the termination of differential-type SCSI bus lines. KOA Speer Electronics Inc., Bradford, Pa.
0805 Resistor
WSL0805 resistor is rated at 1/8 W and is said to provide current sensing in power management applications for cell phones and pagers, disk drive motor controls in computers, and a wide range of automotive applications, including electronic engine controls, entertainment and climate controls. In an 0805 package, the resistor reportedly has resistance values of 10 mW and ±1 percent tolerances. Operating temperature range is from -65° to 170°C. Vishay Intertechnology Inc., Malvern, Pa.
Switching Regulators
The S-8330 Series output voltage can be adjusted with an 8-bit digital signal from a microprocessor or other control unit. This feature reportedly makes the series ideal for a bias generator for LCD graphic displays. This LCD bias voltage is adjusted to change the contrast. The series delivers digitally controlled output voltages from 8 to 30 V in a wide range of input voltages from 9 down to 2 V. In shutdown mode, it draws 1 uA. The only external components required are a coil, a capacitor and a diode. Seiko Instruments, Torrance, Calif.
Power Inductor
The Power Pod high-current surface mount power inductors deliver up to 6 W per cubic inch. These inductors can be used for power supplies, power regulators and DC-to-DC converters. Other applications include uses in security systems, instrumentation, bar code and laboratory analysis equipment. The inductors measure 0.650 x 0.800 x 0.600" high and reportedly have current ratings up to 39 A, with saturation current to 125 A. Inductance ranges from 0.10 to 5.6 µH with DC resistance starting at 0.006 W. Gowanda Electronics, Gowanda, N.Y.
Pressure Transducer
Model 217 down-mount "C" seal pressure transducer is designed for installation on a modular block gas stick or panel for monitoring specialty gas processes in high-purity gas delivery systems and semiconductor process tools. The transducer is available with 5 VDC, 10 VDC, or 4 to 20 mA output with 0.25 percent of full-scale or 1.0 percent of reading accuracy. It is said to have pressure ranges from 0-7 to 0-200 bar. Setra Systems, Boxborough, Mass.
High-voltage Caps
Type MXMH surface mount aluminum electrolytic capacitor is said to be specified in applications requiring high-voltage, dependability and small size. Offered in voltages of 200 and 400 VDC, these polarized caps are high-temperature load life tested for 2,000 hours at 105°C and are suited for use on PCBs in computers, consumer electronics, telecommunications and test equipment. The caps are provided in a 10 x 10.8 mm case size with rated capacitances of 3.3 and 4.7 µF for the 400 VDC model, and 4.7 or 10 µF for the 200 VDC version. They reportedly have a capacitance tolerance of ±20 percent. Tecate Industries Inc., Poway, Calif.
INTERCONNECT
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Fibre Channel Connector
FCN-244 Series is a two-piece, single connector attachment-type (SCA 2) connector that reportedly interfaces fibre channel disk drives directly to a backplane system or motherboard. The 40-position, 0.050" pitch connector consists of a surface mount, straddle mount plug and a vertical mount socket that meets ANSI's T-11 fibre channel arbitrated loop standard. It features gold-plated bellows contacts with three-stage sequential mating for hot swapping. Fujitsu Takamisawa America Inc., Sunnyvale, Calif.
Board-to-board
B2B high-density SMT board-to-board connectors feature a shrouded design to reportedly protect exposed male pins during handling and to provide positive polarization to aid in blind mating applications. The connectors have more than 400 contacts per sq. in., low inductance, standard mated heights from 5 to 19 mm, gold-plated contacts, 0.50" pitch, and 0.030" diameter eutectic solder balls. Advanced Interconnections Corp., West Warwick, R.I.
Digital Memory Card Connectors
This family of secure digital memory card connectors offers integral card detect and write protect. The 5638 Series is compatible with Secure Digital Association connectors and accepts postage stamp size removable flash storage media developed by Toshiba, SanDisk and Matsushita (Panasonic). The connectors feature a nine-contact configuration with SMT tails located within the connector body. They are said to offer a current rating of 0.5 A per pin and a rated voltage of 5 V with dielectric withstanding voltage of 500 V rms per minute. Operating temperature range is -25° to 90°C. AVX Corp., Myrtle Beach, S.C.
20-pin Connector
A 20-pin SCA-2 plug connector for fibre channel GBIC modules,.this connector has a precise and predetermined amount of solder and flux attached to each contact lead. This allows the connector to be soldered while PCBs are still in panel form and in-line with other SMT processes. The connector is reportedly hot pluggable and blind mateable, has a UL 94V-0 high-temperature housing, gold or gold/palladium nickel plate signal contacts, and tin or tin/lead plated ground contacts. Teka Interconnection Systems, Warwick, R.I.
Direct Link to Passive Components
AVX launched a Web site at www.avxcorp.com that provides an online resource for technical information with an intelligent search mechanism and fast download times.
The site offers detailed information categorized by product type as well as product family, allowing users to select and download information on individual products as opposed to entire product catalogs. The navigational functionality has been improved, enabling users to move quickly between sections from anywhere on the site. The company's spice model software applications are also available online, for accessing circuit models and specific technical parameters of MLC, RF/Microwave, SMPS and tantalum capacitors such as ESR, ESL and impedance versus frequency. Users also can download these programs and product datasheets, catalogs, and technical papers to their hard drives using Adobe Acrobat Reader.
The site contains detailed information on the company's broad range of MLC, tantalum and specialist capacitors, resistive devices, connectors, ferrites, timing devices, and integrated passive components. Also included are the company's current financial summaries and corporate overview detailing its history.