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Topic: FR4

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Printed circuit board

Fiberglass

Insulator

	G10 FR4, Micarta®, Garolite, Copper Clad, Tube, Rod - JJ Orly.
		FR4 (also known as Garolite) can be substituted where G10 is specified; G10 can never be substituted for FR4.
		Description: G10-FR4 (FR4) is a fire rated electrical-grade dielectric made with and epoxy material reinforced with a woven fiberglass mat.
		FR4 material conforms to the requirements of military specification Mil P 13949 Type F, MIL-S-13949/04 GF/GFN/GFK and Mil I 24768/2 and is rated UL 94V-O. material is also known as Garolite.
	www.jjorly.com /g10_fr4_sheets_fabricator.htm (737 words)

	FR4, Garolite, FR-4 PCB Material \| JJ Orly Inc.
		The abbreviation "FR4" means: F (for flame) and R (for retardancies) and the 4 is a # 4 epoxy.
		FR4 also features high flexural, impact, superior mechanical strength and bond strength at temperatures up to 130°C. G10-FR4 is suitable for structural, electronic, pc boards and electrical applications.
		FR-4 is a versatile material due to several mechanical and electrical properties; it is less reactive at high frequencies, absorbs less moisture, has greater strength and stiffness, and is highly flame resistant.
	www.jjorly.com /g10_fr4_sheet_material_price.htm (0 words)

	FR4 G10 Material Supplier \| JJ Orly, Inc.
		G10 FR4 is commonly used in electronics because of it's high dielectric strength and arc resistance.
		G10 FR4 can be used in areas where mechanical stability is required in conjunction with thermal stability.
		G10 FR4 is used in Power Stations and Hydroelectric units as buss bars and terminal boards.
	www.fr4g10.com (0 words)

	Glossary - FR4 Laminate (December 2002) (Site not responding. Last check: )
		FR4 laminate is the usual base material from which plated-through-hole and multilayer printed circuit boards are constructed.
		Expansion coefficient of FR4 laminate in the xy plane is approximately 16 ppm per degree C (copper 17-18ppm, glass fibre 5-7ppm, resin 40 ppm).
		The glass transition temperature (Tg) of FR4, at which the resin changes from a glassy to a plastic state, ranges from 120°C to 180°C depending on resin chemistry.
	www.emtonthenet.net /glossary/fr4laminate.html (271 words)

	NationMaster - Encyclopedia: FR4 (Site not responding. Last check: )
		FR4 laminate is the usual base material from which plated-through-hole and multilayer printed circuit boards are constructed.
		Expansion coefficient of FR4 laminate in the xy plane is approximately 16 ppm per degree C (copper 17-18ppm, glass fibre 5-7ppm, resin 40 ppm).
		FR4 RF copper losses are high since the copper surface is made very rough to ensure good mechanical bonding to the dielectric substrate.
	www.nationmaster.com /encyclopedia/FR4 (282 words)

	Fr4 Properties
		You can add this small image to your Web site and provide a link to us.
		I am looking for the surface resistivity and volume resistivity of standard fr4 as a function of temperature and /or humidity.
		Surface resistivity decreases logaritheically with an increase in humidity at approximately the rate of one decade per 20 percent humidity change.
	www.smtnet.com /Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=2702& (0 words)

	Double-Sided PCB(FR4,PTH,NPTH) - Viafine PCB Manufacturer
		FR4 Double-Sided PTH PCB with Green Soldermask, White Legend, V-Scored, & Contour Punched.
		FR4 Double-Sided PTH PCB with White Legend, V-Scored, Contour Punched.
		FR4 Double-Sided PTH PCB with Green Soldermask, White Legend, V-Scored, Contour Punched.
	www.viafine.com /english_double_sided_pcb.html (419 words)

	APW successfully introduces environmentally friendly FR4 at Hedge End
		The primary problem is the presence of bromide-based flame-retardants in both the laminate itself and the pre-preg that separates the layers; these additives are an essential mechanism enabling the finished board to meet flame-retardant and self-extinguishing specifications.
		Achieving a specified characteristic impedance, high signal integrity and low crosstalk within a backplane is dependant on the intrinsic characteristics, layout, structure and mechanical properties of the backplane itself.
		Migrating existing multilayer impedance controlled designs from traditional FR4 to the BFFR version involves modifications within the manufacturing process to achieve the required electrical parameters on a repeatable basis.
	www.dedicated-systems.com /VPR/layout/display/pr.asp?PRID=3709 (338 words)

	Calculating differential and coplanar impedance on FR4
		FR4 is a composite material, in most cases its a good approximation to assume a dielectric constant Er of 4.2, however research into the prediction of impedance of edge coupled differential and co planar structures has shown for the best results you need to take into account the composite structure of the material
		The two main constituents of FR4 are glass with an Er of around 6 and resin with a dielectric constant of around 3.
		Remember that FR4 boards are built of layers of core and pre preg material.
	www.polarinstruments.com /support/cits/AP125.html (542 words)

	» Inside Apple’s blue logic boards \| The Apple Core \| ZDNet.com
		The abbreviation "FR4" means: F (for flame) and R (for retardancies) and the 4 is a # 4 epoxy.
		FR4 also features high flexural, impact, superior mechanical strength and bond strength at temperatures up to 130°C. G10-FR4 is suitable for structural, electronic, pc boards and electrical applications.
		According to a colleague who has worked in the semiconductor industry for years blue boards used to be less reliable and more prone to wiskering (copper migrating between plated through holes and shorting connections) and were not as temperature stable as their green G10-FR4 counterparts.
	blogs.zdnet.com /Apple/index.php?p=324 (526 words)

	TECHTIP
		FR4 prepreg can also be used to bond the RO4003 layers together and provide the simplest fabrication process.
		In this case, FR4 prepreg constructions are 30 to 35% lossier than FEP constructions but the overall loss is still low (0.07 to 0.3 dB/inch compared to 0.2 to 0.8 dB/inch for an all FR4 stripline).
		This data illustrates that FR4 prepreg can be used to bond RO4003 material without drastically increasing the overall circuit losses while at the same time maintaining simplicity in fabrication.
	www.rogers-corp.com /mwu/techtip2.htm (894 words)

	G10-FR4 Glass Reinforced Composites- Micarta
		NEMA grades G10 and FR4 Glass-Cloth Reinforced Epoxy -- natural color is typically a yellowish to light green.
		The main difference between NEMA Grades G10 and FR4 is that FR4 is a fire retardant grade of G10.
		Therefore, FR4 can be safely substituted where G10 is called for, while G10 can never be substituted where FR4 is called for.
	polycarbonate-tubes-rods.com /g10-fr4.htm (254 words)

	FR4 Fast Rail 4 Module Holder. Designed for FCI, Notifier, and Firelite Systems.
		The FR4 Fast Rail is designed to hold up to four System Sensor style addressable modules with a quick snap in assembly.
		The FR4 is supplied with edge protectors to eliminate wire shorts when pulling wire chases.
		The FR4 is manufactured from durable 20 gauge galvanized steel and is designed with multiple mounting hole patterns for wall or cabinet mount.
	www.1sae.com /products/intaccess/fr4/index.html (135 words)

	Coherent Inc. : FR4 Cutting with the K2K CO₂ Laser
		Glass-reinforced epoxy circuit boards (FR4) typically char when cut with a CO laser.
		This charring may be greatly reduced by using a laser with high peak power, such as the Coherent CO K2K, in conjunction with an acousto-optic modulator.
		FR4 boards of 1 mm thickness were cut using multiple passes.
	www.coherent.com /Applications/index.cfm?fuseaction=Forms.AppLevel2&AppLevel2ID=50 (305 words)

	Euro Electronic Manufactures, Nema FR4, UK PCB Assembly Circuit Board Assemblers
		At room temperatures Nema FR4 has high bond, flexural and impact strength, at room temperatures in real-life test beds and in pcb and analyses and methods including printed circuit temperature calculations.
		FR4 is a widely used stiffener for flexible pcbs.
		A copper plated FR4 PCB with the correct FR4 clad thickness is suitable to be used as a wideband dielectric resonator for mobile phones.
	www.clarydon.com /services/euro_electronic_manufactures.htm (247 words)

	G-10 FR4 Fiberglass Epoxy Resin Sheet - cut to size and full sheets
		(yellowish to light green) The most versatile all-around laminate, G-10 or FR4 grade is a continuous glass woven fabric base impregnated with an epoxy resin binder.
		This G10 and FR4 material is also available THINNER and THICKER as well as in ROD and TUBE.
		Due to saw cut, width may be up to.250" undersize, and length may be 47.75" to 48"+ wide.
	www.rplastics.com /g10sheet.html (148 words)

	FR4 Leiterplatte - Evuu (Site not responding. Last check: )
		SMD-Bestückautomaten Reflowöfen Wellenlötanlage AOI-System Verfahren: Reflowlöten, no-clean Wellenlöten, no-clean Schaltungsträger: Leiterplatte FR4, FR5, CEM, µ-Via Starr-F...
		Lieferzeiten Preisgünstige Alternativen Leiterplatten aus CEM1, FR2 und - FR4 Materialien Wir bieten Ihnen Tastaturfolien in allen Formen und...
		0,15 mm Leiterbahnbreiten 100 µm Multilayerdicken 0,5 mm Eildienst Fertigung nach ISO 9001 UL-Freigabe Einige Eckdaten zur Fertigung der Leiterplatte: Basismaterial: FR4, FR...
	www.evuu.de /FR4+Leiterplatte (254 words)

	YouTube - FR4 Compilation
		FR4 is300 impreza wrx rsx car (more) (less)
		Masters 2007 final - Ronnie O'Sullivan vs Ding Junhui fr.
		Embassy World snooker 1995 Thorne x Hicks Fr4
	youtube.com /watch?v=R9_DCB-JHR0 (139 words)

	Copper clad laminates and electrical grade laminates as well as ROHA compliant laminates (Site not responding. Last check: )
		Colored FR4 is available in fl, blue and yellow, as well as natural.
		Colored FR4 is available in a solid color throughout and a 50% natural and 50% color configuration.
		Note: All of our FR4 is manufactured in multi-tetra and di-functional epoxies.
	www.currentcomposites.com /html/electrical_grade_laminates.html (518 words)

	Marking 2D Codes on FR4 using Synrad CO2 Lasers
		FR4, which has the best overall physical, thermal, and electrical properties for circuit board applications, is a flame-retardant general grade laminate created from alkali-free glass cloth coated with epoxy resin and cured under pressure and heat.
		In addition to providing a good substrate for text and 2D code marking, FR4 can be laser-cut, although edges typically exhibit varying levels of discolorization or charring.
		A second sample, containing twelve 0.060” high alphanumeric characters, was marked using 12 W at 25 IPS in a time of 0.22 seconds.
	www.synrad.com /search_apps/application_briefs/67-1.htm (233 words)

	FR4 - Electronic Circuits Projects Diagrams Free
		When FR4 gets above it's rated temperature it starts to expand and possibly warp in an unpredictable way.
		If you mean when someone is trying to set fire to it with a match....
		To S. Welsen FR4 is the base material for circuit boards.
	www.electro-tech-online.com /general-electronics-chat/3924-fr4-post18502.html (125 words)

	Adsl Fr4 in alltheShopping.co.uk
		We show you the best selection of Adsl Fr4 web sites.
		You can search thousands of Adsl Fr4 shops and web sites for the products you are shopping for.
		Use our easy-to-use directory to help you search for and buy Adsl Fr4 products at the best prices.
	www.alltheshopping.com /uk/adsl/adsl-fr4.htm (146 words)

	Forgotten Realms
		For the most part, these accessory modules detail certain locations in the Forgotten Realms world, and most also provide short scenarios set in their particular locale.
		Exceptions are FR4 Magister, which describes magic items and spells specific to the Forgotten Realms; and FR7 Hall of Heroes, which provides descriptions and statistics for various heroes.
		Thanks to Adrian Newman for the scans of FR1, FR3, FR4, FR5, FR6, FR7, FR8, FR11, FR12, FR14, and FR15; and to Michael Deaton for scans of FR10 and FR16.
	www.acaeum.com /ddindexes/modpages/fr.html (438 words)

	FR4 bromfrei (Site not responding. Last check: )
		Abzuwarten bleibt, ob mit dem technisch sonst identischen Harz FR4 abgelöst oder durch eine neue Variante bromfrei ergänzt wird.
		Isola bietet mit FR4 Typ 156 halogenfreies Materialan.
		Die Modifizierung des Harzsystems mit Phosphor führt trotzdem zur Klasse UL 94 V-O! Auch Prepregs und Multilayermaterial stehen zu Verfügung.
	www.ggp-peters.de /german/fr4_bromfrei.html (77 words)

	FR4 : Liste des entreprises productrices et/ou distributrices de cette marque (Site not responding. Last check: )
		FR4 : Liste des entreprises productrices et/ou distributrices de cette marque
		Annuaire marques > F > FORTRON à FRAPANTOL > FR4
		Découvrez l'annuaire des entreprises distribuant les produits de marque FR4 de Kompass.
	www.kompass.fr /annuaire-entreprise-marque/f/fortro-frapan/fr4/index.html (101 words)

	Building a 3.3 to 3.8 GHz 802.16a WiMAX LNA on FR4 Material \| February 8, ...
		Normally, the insertion loss for the FR4 board will increase rapidly when the operating frequency goes above 3 GHz, and designing 3 GHz circuits using FR4 material is usually not recommended.
		When using high performance devices such as the ATF-54143, however, circuits designed on FR4 material can meet the customer’s requirements for noise figure, gain and linearity.
		With the increasing acceptance of WiMAX as a substitute for the existing broadband wire-line infrastructure in the last mile, people are now designing and testing WiMAX CPE and BTS operating at around 3.5 GHz.
	www.mwjournal.com /Journal/article.asp?HH_ID=AR_463 (417 words)

	Rigid-Flex PCBs with FR4/HDI-PDA Laminate
		Number of layers: 2 to 4 Thickness: 12 mil only Thermal performance: 30% better conduction than standard 0.062-inch FR4 more...
		Number of layers: 2 to 4 Thickness: 12 mil only Thermal performance: 30% better conduction than standard 0.062-inch FR4
		Thermal performance: 30% better conduction than standard 0.062-inch FR4
	www.rusbiz.com /prod_info.html?prid=22902 (65 words)

	Fr4 leiterplatten - Evuu (Site not responding. Last check: )
		Schaltungsträger, Leiterplatten 69 4.6.1 Normale FR4 Leiterplatten (Multilayer) 69 4.6.2 Leiterplatte mit integriertem Kühlkanal 70 4.6.3 Heatsink Leiterplatten 72 4...
		Material FR4 anderes LP-Dicke in mm End-CU 35 µm 70 µm 105 µm andere Oberfläche partiell verzinnt (HAL-Bleifrei) chemisch Zinn chemisch Ni/Au galvanisch Ni/Au (partiell...
		Allgemeine Ausführung: Lagenanzahl : 1-lagig 2-lagig 4-lagig 6-lagig 8-lagig Materialstärke : 0,8 mmmm 1,2 mm 1,55mm 2 mm Basismaterial : FR4 sonstiges Kupferstärke Außenlagen : 35 &micr...
	www.evuu.de /Fr4+leiterplatten (301 words)

	Electronics Forums - View Single Post - Electromigration and/or dielectric erosion in FR4 substrates
		Thread: Electromigration and/or dielectric erosion in FR4 substrates
		3.) FR4 type was not specified, but these are credible data points.
		If any one could help, there doesn't seem to be a lot of information
	www.electronicspoint.com /showpost.php?p=241655&postcount=1 (136 words)

	fr4 - Products for fr4 - Manufacturers, Exporters, Suppliers, Traders, Companies, Factories
		fr4 - Products for fr4 - Manufacturers, Exporters, Suppliers, Traders, Companies, Factories
		Manufacturers, Exporters, Suppliers and Distributors related to fr4.
		We are glad to introduce ourselves as one of leading manufacturer of electrical insulating materials and supplying electric insulating materials to international market, and we are Certified ABB...
	www.ec21.com /manufacturers/fr4.html (0 words)

	GFEC material of quality "FR4" available at Muehlacker
		Uwe Kitzberger sourced a supplier of top quality glass fiber reinforced epoxy composite (gfec) sheets of 3mm thickness with the quality "FR4".
		Re: GFEC material of quality "FR4" available at MÃ¼hlacker
		FR4 is the grade I use too, but I find it twice that price in France...
	www.baggressive.com /smf/index.php?topic=77.0 (364 words)

	si-list.mail: RE: [SI-LIST] : RE: 2.5 GHz in FR4
		RE: [SI-LIST] : RE: 2.5 GHz in FR4
		Subject: Re: [SI-LIST] : RE: 2.5 GHz in FR4
		These 'psychic connections' of which you speak sound very interesting.
	www.qsl.net /wb6tpu/si-list/0643.html (418 words)

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