Printed circuit board materials

Leiterplatten-Material Hersteller

Various requirements for printed circuit boards make the use of different circuit board substrates necessary. 

Whereas for many standard applications the classical FR4 material is sufficient, possibly in high Tg version (for improved thermo-mechanical properties), for other areas (such as high frequencies) alternate materials are absolutely required.

The following information is intended as a abstract summary of all available material types and their fundamental properties, to make it easier for you to make a selection according to the required field of application.

The standard values of the processed FR4 materials can be found in following PDF:
FR4 material - standard values.

Material samples of the company Rogers can directly be requested here:
http://rogerscorp.force.com/samples/samples_public

On request, you can order circuit boards with EN45545-2: 2013 certified Isola material (fire protection requirements for rail vehicles): EN45545-2: 2013 Information.

Please note: The selected materials may be replaced by technically equivalent or similar products, according to available stocks on hand.

Materials for rigid circuit boards

Material for rigid PCBsPCB TgTgPCB CTE zCTE-zPCB dielectric constantεrPCB electric strenghtElectric strengthPCB surface resistivitySurface resistivityPCB tracing resistanceCTIPCB Td260Td260PCB Td288Td288PCB Td WertTd valuePCB peel strengthPeel strength
Material for rigid PCBs PCB TgTg°CPCB CTE zCTE-zppm/°CPCB dielectric constantεr@1GHzPCB electric strenghtElectric strengthKV/mmPCB surface resistivitySurface resistivityPCB tracing resistanceCTIPLCPCB Td260Td260minPCB Td288Td288minPCB Td WertTd value°CPCB peel strengthPeel strengthN/mm
Material for rigid PCBsISOLA Duraver DE104
Standard FR4
PCB TgTg135°PCB CTE zCTE-z70PCB dielectric constantεr4,37PCB electric strenghtElectric strength50PCB surface resistivitySurface resistivity1,0 x 10^6PCB tracing resistanceCTIPLC 2PCB Td260Td26012PCB Td288Td288-PCB Td WertTd value315°PCB peel strengthPeel strength1,6
Material for rigid PCBsISOLA Duraver DE104 KF
FR4 tracking resistant
PCB TgTg135°PCB CTE zCTE-z45PCB dielectric constantεr4,6 - 4,9*PCB electric strenghtElectric strength45PCB surface resistivitySurface resistivity1,0 x 10^6PCB tracing resistanceCTIPLC 1PCB Td260Td26012PCB Td288Td288-PCB Td WertTd value315°PCB peel strengthPeel strength1,6
Material for rigid PCBsISOLA DE156
FR4 halogen-free
PCB TgTg155°PCB CTE zCTE-z45PCB dielectric constantεr4,01PCB electric strenghtElectric strength36PCB surface resistivitySurface resistivity4,0 x 10^6PCB tracing resistanceCTI-PCB Td260Td26060PCB Td288Td288>10PCB Td WertTd value390°PCB peel strengthPeel strength-
Material for rigid PCBsISOLA IS410
HTg, CAF-Enhanced
PCB TgTg180°PCB CTE zCTE-z55PCB dielectric constantεr3,90PCB electric strenghtElectric strength50PCB surface resistivitySurface resistivity8,0 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26050PCB Td288Td28810PCB Td WertTd value350°PCB peel strengthPeel strength1,2
Material for rigid PCBsISOLA IS420
HTg, CAF-Enhanced
PCB TgTg170°PCB CTE zCTE-z45PCB dielectric constantεr4,17PCB electric strenghtElectric strength40PCB surface resistivitySurface resistivity3,0 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28815PCB Td WertTd value350°PCB peel strengthPeel strength1,3
Material for rigid PCBsISOLA P96
Polyimid-based
PCB TgTg260°PCB CTE zCTE-z55PCB dielectric constantεr3,78PCB electric strenghtElectric strength44PCB surface resistivitySurface resistivity3,0 x 10^6PCB tracing resistanceCTIPLC 4PCB Td260Td26060PCB Td288Td28860PCB Td WertTd value396°PCB peel strengthPeel strength1,3
Material for rigid PCBsISOLA G200
BT-Epoxy
PCB TgTg180°PCB CTE zCTE-z55PCB dielectric constantεr3,70PCB electric strenghtElectric strength45PCB surface resistivitySurface resistivity2,2 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28810PCB Td WertTd value325°PCB peel strengthPeel strength1,0
Material for rigid PCBsShengyi S1141
FR4 Alternative
PCB TgTg140°PCB CTE zCTE-z65PCB dielectric constantεr4,60*PCB electric strenghtElectric strength60PCB surface resistivitySurface resistivity5,4 x 10^7PCB tracing resistanceCTIPLC 3PCB Td260Td26015PCB Td288Td2882PCB Td WertTd value310°PCB peel strengthPeel strength1,8
Material for rigid PCBsShengyi S1000-2
FR4 HTg alternative
PCB TgTg180°PCB CTE zCTE-z45PCB dielectric constantεr4,80*PCB electric strenghtElectric strength63PCB surface resistivitySurface resistivity7,9 x 10^7PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28820PCB Td WertTd value345°PCB peel strengthPeel strength1,4
Material for rigid PCBsITEQ IT-180A
FR4 HTg alternative
PCB TgTg175°PCB CTE zCTE-z45PCB dielectric constantεr4,40PCB electric strenghtElectric strength30PCB surface resistivitySurface resistivity1 x 10^4PCB tracing resistanceCTI-PCB Td260Td26060PCB Td288Td28830PCB Td WertTd value345°PCB peel strengthPeel strength1,0

* at 1MHz

Unless otherwise noted, the CTI (Comparative Tracking Index) which indicates the tracking resistance, is PLC3 (175V - 250V) for rigid PCBs. On request, we are also able to produce PCBs with PLC 2 (> 250V), PLC 1 (> 400V) or PLC 0 (> 600V). See Overview of CTI / PLC.

Materials for flexible circuit boards

Material for flexible PCBsPCB recommended operating temperatureMax. recommended operating temperatureFlexible circuit copper typeCopper typePCB Glass transition temperature TgGlass transition temperature TgPCB dielectric constantεrPCB CTE-zCTE-zPCB electric strenghtElectric strenghtPCB surface resistivitySurface resistivityPCB peel strengthPeel strength
Material for flexible PCBs PCB recommended operating temperatureMax. recommended operating temperature°CFlexible circuit copper typeCopper type*PCB Glass transition temperature TgGlass transition temperature Tg°CPCB dielectric constantεr@1MHzPCB CTE-zCTE-zppm/°CPCB electric strenghtElectric strenghtKV/mmPCB surface resistivitySurface resistivityPCB peel strengthPeel strengthN/mm
Material for flexible PCBsPolyimide + AdhesivePCB recommended operating temperatureMax. recommended operating temperature Flexible circuit copper typeCopper type PCB Glass transition temperature TgGlass transition temperature Tg PCB dielectric constantεr PCB CTE-zCTE-z PCB electric strenghtElectric strenght PCB surface resistivitySurface resistivity PCB peel strengthPeel strength 
Material for flexible PCBsShengyi SF305PCB recommended operating temperatureMax. recommended operating temperature105°Flexible circuit copper typeCopper typeRAPCB Glass transition temperature TgGlass transition temperature Tg-PCB dielectric constantεr3,6PCB CTE-zCTE-z-PCB electric strenghtElectric strenght21PCB surface resistivitySurface resistivity1 x 10^5PCB peel strengthPeel strength1,1
Material for flexible PCBsAdhesivelessPCB recommended operating temperatureMax. recommended operating temperature Flexible circuit copper typeCopper type PCB Glass transition temperature TgGlass transition temperature Tg PCB dielectric constantεr PCB CTE-zCTE-z PCB electric strenghtElectric strenght PCB surface resistivitySurface resistivity PCB peel strengthPeel strength 
Material for flexible PCBsDuPont Pyralux APPCB recommended operating temperatureMax. recommended operating temperature180°Flexible circuit copper typeCopper typeRAPCB Glass transition temperature TgGlass transition temperature Tg220PCB dielectric constantεr3,4PCB CTE-zCTE-z25PCB electric strenghtElectric strenght256PCB surface resistivitySurface resistivity1 x 10^10PCB peel strengthPeel strength1,8
Material for flexible PCBsPanasonic RF775PCB recommended operating temperatureMax. recommended operating temperature130°Flexible circuit copper typeCopper typeEDPCB Glass transition temperature TgGlass transition temperature Tg343PCB dielectric constantεr3,2PCB CTE-zCTE-z-PCB electric strenghtElectric strenght276PCB surface resistivitySurface resistivity1 x 10^8PCB peel strengthPeel strength1,7
Material for flexible PCBsThinflex W-05050PCB recommended operating temperatureMax. recommended operating temperature105°Flexible circuit copper typeCopper typeEDPCB Glass transition temperature TgGlass transition temperature Tg350PCB dielectric constantεr3,3PCB CTE-zCTE-z24PCB electric strenghtElectric strenght216PCB surface resistivitySurface resistivity1 x 10^5PCB peel strengthPeel strength0,6
Material for flexible PCBsPI CoverlayPCB recommended operating temperatureMax. recommended operating temperature Flexible circuit copper typeCopper type PCB Glass transition temperature TgGlass transition temperature Tg PCB dielectric constantεr PCB CTE-zCTE-z PCB electric strenghtElectric strenght PCB surface resistivitySurface resistivity PCB peel strengthPeel strength 
Material for flexible PCBsShengyi SF305CPCB recommended operating temperatureMax. recommended operating temperature105°Flexible circuit copper typeCopper type-PCB Glass transition temperature TgGlass transition temperature Tg-PCB dielectric constantεr-PCB CTE-zCTE-z-PCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity3 x 10^6PCB peel strengthPeel strength-
Material for flexible PCBsDuPont Pyralux FRPCB recommended operating temperatureMax. recommended operating temperature180°Flexible circuit copper typeCopper type-PCB Glass transition temperature TgGlass transition temperature Tg-PCB dielectric constantεr3,5PCB CTE-zCTE-z-PCB electric strenghtElectric strenght138PCB surface resistivitySurface resistivity1 x 10^7PCB peel strengthPeel strength-
Material for flexible PCBsAdhesive tapePCB recommended operating temperatureMax. recommended operating temperature Flexible circuit copper typeCopper type PCB Glass transition temperature TgGlass transition temperature Tg PCB dielectric constantεr PCB CTE-zCTE-z PCB electric strenghtElectric strenght PCB surface resistivitySurface resistivity PCB peel strengthPeel strength 
Material for flexible PCBs3M 9077PCB recommended operating temperatureMax. recommended operating temperature150°Flexible circuit copper typeCopper type-PCB Glass transition temperature TgGlass transition temperature Tg-PCB dielectric constantεr-PCB CTE-zCTE-z-PCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity-PCB peel strengthPeel strength-

* RA = Rolled copper, suitable for dynamic, flexible applications; ED = Electrolytically deposited copper , only suited for stable and semi-dynamic applications

Materials for metal core boards

1 layer

Technical propertiesUnitKL HA50 (type2)TC-Lam 1.3KL (type3)Test method
Technical propertiesData sheetUnit-KL HA50 (type2)KL HA50TC-Lam 1.3TC-Lam 1.3KL (type3)KL HA50Test method-
Technical propertiesArea of applicationUnit-KL HA50 (type2)StandardTC-Lam 1.3StandardKL (type3)ExtendedTest method-
Technical propertiesThermal conductivity factorUnitW / m*kKL HA50 (type2)1.6TC-Lam 1.31.3KL (type3)2.2Test methodASTM-D 5470
Technical propertiesDielectric constant εrUnit(bei 1 MHz)KL HA50 (type2)5.3TC-Lam 1.3-KL (type3)5.5Test methodIEC-61189
Technical propertiesSurface resistanceUnitKL HA50 (type2)1.0 * 10^6TC-Lam 1.31.0 * 10^7KL (type3)1.0 * 10^6Test methodIEC-61189
Technical propertiesThermal durabilityUnitK / WKL HA50 (type2)-TC-Lam 1.30.77KL (type3)-Test methodASTM-E 1225
Technical propertiesGlass transition dielectric (Tg)Unit°CKL HA50 (type2)122TC-Lam 1.3100KL (type3)122Test methodIPC-TM150
Technical propertiesDielectric breakdown (AC)*UnitkVKL HA50 (type2)4.0 - 6.0TC-Lam 1.35.0KL (type3)4.0 - 6.0Test methodIPC-TM-650
Technical propertiesCTIUnitVKL HA50 (type2)600TC-Lam 1.3600KL (type3)600Test methodUL746A

2 layers (plated-through)

Technical propertiesUnitCCAF-04CCAF-05Test method
Technical propertiesData sheetUnit-CCAF-04CCAF-04CCAF-05CCAF-05Test method-
Technical propertiesArea of applicationUnit-CCAF-04StandardCCAF-05ExtendedTest method-
Technical propertiesThermal conductivity factorUnitW / m*kCCAF-041.5CCAF-052.2Test methodASTM-D 5470
Technical propertiesDielectric constant εrUnit(bei 1 MHz)CCAF-044.2CCAF-054.24Test methodIEC-61189
Technical propertiesSurface resistanceUnitCCAF-045.0 * 10^7CCAF-053.68 * 10^7Test methodIEC-61189
Technical propertiesThermal durabilityUnitK / WCCAF-040.65CCAF-050.45Test methodASTM-E 1225
Technical propertiesGlass transition dielectric (Tg)Unit°CCCAF-04-CCAF-05-Test methodIPC-TM150
Technical propertiesDielectric breakdown (AC)*UnitkVCCAF-044.0CCAF-056.0Test methodIPC-TM-650
Technical propertiesCTIUnitVCCAF-04600CCAF-05600Test methodUL746A

* Depending ondielectric thickness,in this example100µm.

Material for high frequency boards

Material for high frequency boardsLeiterplatte TgTgPCB CTE-zCTE-zPCB dielectric constantεrPCB electric strenghtElectric strenghtPCB surface resistivitySurface resistivityPCB thermal conductive factorThermal conductive factorPCB Td260Td260PCB Td288Td288PCB Td valueTd valuePCB peel strength KupferhaftungPeel strength
Material for high frequency boards Leiterplatte TgTg°CPCB CTE-zCTE-zppm/°CPCB dielectric constantεr PCB electric strenghtElectric strenghtKV/mmPCB surface resistivitySurface resistivityPCB thermal conductive factorThermal conductive factorW/m*KPCB Td260Td260minPCB Td288Td288minPCB Td valueTd value°CPCB peel strength KupferhaftungPeel strengthN/mm
Material for high frequency boardsRogers 4350B
HF material
Leiterplatte TgTg280°PCB CTE-zCTE-z50PCB dielectric constantεr3,5@10GHzPCB electric strenghtElectric strenght31PCB surface resistivitySurface resistivity5,7 x 10^9PCB thermal conductive factorThermal conductive factor0,69PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value390°PCB peel strength KupferhaftungPeel strength0,9
Material for high frequency boardsISOLA IS620
E-fibre glas
Leiterplatte TgTg220°PCB CTE-zCTE-z55PCB dielectric constantεr4,5@1MHzPCB electric strenghtElectric strenght37PCB surface resistivitySurface resistivity7,3 x 10^6PCB thermal conductive factorThermal conductive factor-PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value-PCB peel strength KupferhaftungPeel strength1,2
Material for high frequency boardsTaconic RF-35
Ceramic
Leiterplatte TgTg315°PCB CTE-zCTE-z64PCB dielectric constantεr3,5@1,9GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1,5 x 10^8PCB thermal conductive factorThermal conductive factor0,24PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value-PCB peel strength KupferhaftungPeel strength1,8
Material for high frequency boardsTaconic TLX
PTFE
Leiterplatte TgTg-PCB CTE-zCTE-z135PCB dielectric constantεr2,5@10GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1 x 10^7PCB thermal conductive factorThermal conductive factor0,19PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value-PCB peel strength KupferhaftungPeel strength2,1
Material for high frequency boardsTaconic TLC
PTFE
Leiterplatte TgTg-PCB CTE-zCTE-z70PCB dielectric constantεr3,2@10GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1 x 10^7PCB thermal conductive factorThermal conductive factor0,24PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value-PCB peel strength KupferhaftungPeel strength2,1
Material for high frequency boardsRogers RO3001
Bonding Film for PTFE
Leiterplatte TgTg160PCB CTE-zCTE-z-PCB dielectric constantεr2,28PCB electric strenghtElectric strenght98PCB surface resistivitySurface resistivity1 x 10^9PCB thermal conductive factorThermal conductive factor0,22PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value-PCB peel strength KupferhaftungPeel strength2,1
Material for high frequency boardsRogers RO3003
PTFE ceramic-filled
Leiterplatte TgTg-PCB CTE-zCTE-z25PCB dielectric constantεr3,0@10GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1 x 10^7PCB thermal conductive factorThermal conductive factor0,50PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value500°PCB peel strength KupferhaftungPeel strength2,2
Material for high frequency boardsRogers RO3006
PTFE ceramic-filled
Leiterplatte TgTg-PCB CTE-zCTE-z24PCB dielectric constantεr6,2@10GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1 x 10^5PCB thermal conductive factorThermal conductive factor0,79PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value500°PCB peel strength KupferhaftungPeel strength1,2
Material for high frequency boardsRogers RO3010
PTFE ceramic-filled
Leiterplatte TgTg-PCB CTE-zCTE-z16PCB dielectric constantεr10@10GHzPCB electric strenghtElectric strenght-PCB surface resistivitySurface resistivity1 x 10^5PCB thermal conductive factorThermal conductive factor0,95PCB Td260Td260-PCB Td288Td288-PCB Td valueTd value500°PCB peel strength KupferhaftungPeel strength1,6
Material for high frequency boardsARLON 85N
Polyimide HTg
Leiterplatte TgTg250°PCB CTE-zCTE-z55PCB dielectric constantεr4,2@1MHzPCB electric strenghtElectric strenght57PCB surface resistivitySurface resistivity1,6 x 10^9PCB thermal conductive factorThermal conductive factor0,20PCB Td260Td26060PCB Td288Td28860PCB Td valueTd value387°PCB peel strength KupferhaftungPeel strength1,2

Material for high-Tg circuit boards (selection)

Material for High-Tg boardsPCB TgTgPCB CTE-zCTE-zPCB dielectric constantεrPCB electric strenghtElectric strenghtPCB surface resistivitySurface resistivityPCB tracing resistanceCTIPCB Td260Td260PCB Td288Td288PCB Td valueTd valuePCB peel strengthPeel strength
Material for High-Tg boards PCB TgTg°CPCB CTE-zCTE-zppm/°CPCB dielectric constantεr@1GHzPCB electric strenghtElectric strenghtKV/mmPCB surface resistivitySurface resistivityPCB tracing resistanceCTIPLCPCB Td260Td260minPCB Td288Td288minPCB Td valueTd value°CPCB peel strengthPeel strengthN/mm
Material for High-Tg boardsISOLA IS410
HTg, CAF-Enhanced
PCB TgTg180°PCB CTE-zCTE-z55PCB dielectric constantεr3,90PCB electric strenghtElectric strenght50PCB surface resistivitySurface resistivity8,0 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26050PCB Td288Td28810PCB Td valueTd value350°PCB peel strengthPeel strength1,2
Material for High-Tg boardsISOLA IS420
HTg, CAF-Enhanced
PCB TgTg170°PCB CTE-zCTE-z45PCB dielectric constantεr4,17PCB electric strenghtElectric strenght40PCB surface resistivitySurface resistivity3,0 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28815PCB Td valueTd value350°PCB peel strengthPeel strength1,3
Material for High-Tg boardsISOLA G200
BT-Epoxy
PCB TgTg180°PCB CTE-zCTE-z55PCB dielectric constantεr3,70PCB electric strenghtElectric strenght45PCB surface resistivitySurface resistivity2,2 x 10^6PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28810PCB Td valueTd value325°PCB peel strengthPeel strength1,0
Material for High-Tg boardsShengyi S1000-2
FR4 HTg
PCB TgTg180°PCB CTE-zCTE-z45PCB dielectric constantεr4,80*PCB electric strenghtElectric strenght63PCB surface resistivitySurface resistivity7,9 x 10^7PCB tracing resistanceCTIPLC 3PCB Td260Td26060PCB Td288Td28820PCB Td valueTd value345°PCB peel strengthPeel strength1,4
Material for High-Tg boardsITEQ IT-180A
FR4 HTg
PCB TgTg175°PCB CTE-zCTE-z45PCB dielectric constantεr4,40PCB electric strenghtElectric strenght30PCB surface resistivitySurface resistivity1 x 10^4PCB tracing resistanceCTI-PCB Td260Td26060PCB Td288Td28830PCB Td valueTd value345°PCB peel strengthPeel strength1,0
Material for High-Tg boardsARLON 85N
Polyimide HTg
PCB TgTg250°PCB CTE-zCTE-z55PCB dielectric constantεr-PCB electric strenghtElectric strenght57PCB surface resistivitySurface resistivity1,6 x 10^9PCB tracing resistanceCTI-PCB Td260Td26060PCB Td288Td28860PCB Td valueTd value387°PCB peel strengthPeel strength1,2

*CAF - Conductive Anodic Filament: an undesirable conducting filament in the substrate of a circuit board