IS 5921-1: Metal-clad base materials for printed circuits for use in electronic and telecommunication equipment, Part 1: General requirements and test

33 Pages·1993·3.1 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
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in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 5921-1 (1993): Metal-clad base materials for printed
circuits for use in electronic and telecommunication
equipment, Part 1: General requirements and test [LITD 5:
Semiconductor and Other Electronic Components and Devices]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

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,. hdiatz Statidard P
SPECIFICATIONF OR METAL-CLikDBASE"
MATERIALSFOR PRINTED'CIRCUITSF ORUSE
I
INELBCTRONICANDTELECOMMUNICATION
EQUIPMENT
PART 1 GENERAL REQUIiEMENTS AND TEST
Second Revision)
(
UDC 57-940-3.126 : 916*513*126 : 8.683.966 : 83-9383-126
,

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BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
;_ ._ .--. .
October 1993 4. ,_ ,_..? ~‘.l. t (L a
Price Groop lo
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detnirP stiucriC lanoitceS ,eettimmoC DTL 17
FOREWORD
sihT naidnI dradnatS traP( 1 ) was detpoda yb eht uaeruB fo naidnI Standards, retfa eht tfard dezilanif
yb eht detnirP stiucriC lanoitceS eettimmoC had neeb devorppa yb eht scinortcelE and -inummoceleT
noitac noisiviD .licnuoC
sihT standard was yllanigiro dehsilbup ni 1970 and tnewrednu tsrif noisiver ni 1983. ehT standard is
gnieb desiver ot gnirb ti ni enil htiw tsetal lacigolonhcet stnempoleved ni this .dleif
nI this noisiver assistance has neeb devired morf gniwollof :stnemucod
CEI buP l-942 dnemA 1. esaB slairetam rof detnirp stiucric : traP 1 tseT .sdohtem lanoitanretnI
lacinhcetortcelE .noissimmoC
CEI toD 52 ( ttceS ) 285 tfarD tnemdnemA ot noitacilbuP 249 : esaB slairetam traP 1 : tseT
.sdohtem tnemerusaeM fo glass noitisnart erutarepmet using laitnereffid gninnacs .sisylana
CEI toD 52 ( ttceS ) 286 tfarD tnemdnemA ot noitacilbuP 249 : esaB slairetam traP 1 : tseT
.sdohtem tnemerusaeM dohtem rof glass noitisnart erutarepmet using lacinahcemomreht
.sisylana
CEI toD 52 ( ttceS ) 287 tfarD tnemdnemA ot noitacilbuP 249 : esaB slairetam traP 1 : tseT
.sdohtem tnemerusaeM fo eruc .rotcaf
CEI toD 52 ( C. 0. ) 319 tnemdnemA ot noitacilbuP l-942 and ot noitacilbup 2-942
snoitacificepS .oN 1, ,2- ,3-- ,4- ,5- ,7- ,9- ,01- 21- and .41-
JEC toD 52 ( C. 0. ) 52 tfarD stnemdnemA and snoitiddA ot CEI noitacilbuP l-942 : esaB
slairetam rof detnirp stiucric traP 1 : tseT .sdohtem
CEI toD 52 ( ttceS ) 268 tfarD lasoporP rof lanoitidda tset - tnemerusaeM dohtem fo tneiciffeoc
fo raenil lamreht .noisnapxe
CEI Dot 52 ( ttceS ) 284 tfarD tnemduemA ut !CEI noitacilbuP l-942 and 2-942 1 ot 7,9 ot 12
and 14 : woH and twist retfa gnihcte and gnitaeh --- tseT sdohtem and erutarepmet _eriuqer
.stnem
roF eht esoprup fo gnidiced rehtehw a ralucitrap tnemeriuqer ot this standard is deilpmoc ,htiw eht
lanif ,eulav devresbo ro ,detaluclac gmsserpxe eht tluser fo a ,tset shall eb dednuor ffo ni ecnadrocca
htiw SI 2 : 1960 seluR‘ rof gnidnuor ffo laciremun seulav ( .‘)desiver ehT rebmun fo tnacifingis secalp
deniater ni eht dednuor ffo eulav dluohs eb eht emas as that fo deificeps eulav ni this standard.
IS 5921( Part 1) : 1993
Indian Standard
SPECIFICATIONFORM ETAL-CLADBASE
MATERIALSFORPRINTEDCIRCUITSFORUSE
IN ELECTRONICANDTELECOMMUNICATION
EQUIPMENT
PART 1 GENERAL REQUIREMENTS AND TEST
(Second Revision)
1 SCOPE 4 GNIKRAM
1.1 sihT dradnats ( Part I ) sebircserp lareneg -eriuqer 4.1 ehT s’rerutcafunam etttan or kram-edart llahs eb
stnem dna sdohtem gnitset ,lacirtcele lacittahcent dna ylbiledtti dekram no the esab laitetant at yreve tttm05
other seitreporp of dalc-latent esab slairetant ni sheet lavretni ni htob .snoitcerid
forttt for noitacilppa ni the dleif of detnirp stiucric ni 4.2 ehT gniwollof noitamrofni llahs eb yletairporppa
noitacinuntmocelet dna deilla cinortcele ,tnempiuqe detacidni no each sheet ni kni or no lebal at eno
evitcepserri of the erutan of the gnitalusni esab :renroc
.lairetam
), s’rerutcafunaM eman ro/dna ;kram-edart
1.2 ehT tttcthods nevig ttiereh for the noitaraperp of ,;
s’rerutcafunaM code rebmun or hctab ;rebmun
test elptttas dna snenticeps are etelpmoc for dalc-reppoc
C> Date of ;erutcafunam
slairetam .ylno yehT yattt eb dednapxe ni erutuf ot
revoc slairetattt dalc htiw other .slatem 4 yttA other gnikrattt as agreed ot neewteb the
resahcrup dna the ;rerutcafunam
1.3 sihT dradnats osla srevoc reyal-itlum dalc-latem
esab .slairetam e) yrtnuoC of ;erutcafunam dna
2 SECNEREFER 9 nI case of erif tnadrater epyt of ,slairetam the
sgnikram no the sheet llahs eb ni red .ruoloc
2.1 ehT naidttI Stattdards detsil ni xennA eraA -secen
yras stcnujda ot siht .dradnats 4.2.1 ehT gttikrattt llahs ton eb detaretilbo yb latnron
gnissecorp ron llahs ti effect the lacisyhp dna lacirtcele
3 YGOLONIMRET seitreporp of the esab .lairetam ehT slebal llahs niattter
3.0 roF the esoprup of siht ,dradnats the gniwollof yleruces dexiffa gnirud latttron gnildnah ofthe sheet tub
snoitinifed llahs ylppa ni noitidda ot those deificeps ni ylidaer elbavomer roirp ot .noitacirbaf ehT ,kni fi ,desu

SI 1885 ( Part 6 ) : 1978. llahs eb of evisorroc-non epyt dna llahs niattter elbigel
gttirud latttrott gnildnah tub ylidaer elbavonter roirp ot
3.1 epyT stseT
noitacirbaf gnitacidni latnoziroh or lacitrev gninrub
stseT deirrac tuo ot evorp ytimrofnoc htiw the -eriuqer grade.
stnem of siht .dradnats esehT are dednetni ot check the
4.3 gnikraM llahs eb detnirp so as ot etacidni the
lareneg seitilauq dna ngised of a nevig epyt of esab enihcam noitcerid of the gnillif .lairetam
.lairetam
4.4 ehT dalc-latent esab lairetant yam osla eb dekrant
3.2 Acceptance Tests htiw the dradnatS Mark.
stseT deirrac tuo no selptttas detceles morf a tol for the 5 STSET
esoprup of ecnatpecca of the .tol
5.1 Classification of Tests
3.2.1 Lof
5.1.1 Type T&s
llA dalc-latetn esab slairetattt of the sattte ,epyt yrogetac
dna ,gnitar derutcafuttattt yb the entas ,yrotcaf gttirud 5.1.1.1 General
the emas ,doirep gnisu the sattte process dna .slairetam sselnU esiwrehto deificeps ruof seceip of -etatttixorppa
yl 1.5 2tit of dalc-latem esab lairetam tuc morf ruof
3.3 Routine Tests
tnereffid sheets of each epyt dna yrogetac llahs eb
stseT deirrac tuo no each nettticeps ot check the deilppus for the esoprup of epyt tests.
stttettteriuqer hcihw are ylekil ot yrav gnirud -cudorp of
5.1.1.2 Sequence epyt tests
.noit
ehT ecneuqes of test lliw eb ni ecnadrocca htiw
ETON - esehT tests yam eb deirrac tuo ni the ecneserp
elbaT 1.
of the .resahcrup
IS 5921 ( Part I ) : 1993
Table 1 Dimensions and Number of Specimen Required for Type Tests
( Clauses 5.1.1.2 and 5.2.4 )
SI No. stseT No. of Samples Size of Specimen
04
(I) (2) (3) (4)
A LACIRTCELE TES’IS
i) ecnatsiseR fo liof 4 52 f 2.0 x 033
ii) ecafruS ecnatsiser dna emulov :ytivitsiser
retfA pmad taeh ydaets( )etats 4 001 00lx
tA detavele erutarepmet 4 001 x 001
iii) cirtceleiD :nwodkaerb
1 57x05
trohS emit tset
petS yb pets tset 05 x 51
)vi rmuloV ytivitimrep dna ssol tnegnat l(ol x 001
)v Q )ecnanoseR( 51x23
*
)iv crA ecnatsiser 05 05.x
)iiv ecafruS noisorroc 0OI 001 htgneL 42
x
)iiiv noisorroC ta egde htdiW ot tius sutarappa
B LACIRTCELE-NON TESTS NO DALC ESAB
LAIRETAM
i) noisnemiD fo elohw steehs llA lluF teehs
ii) ytiralugnatceR fo tuc slenap llA ,064 Max
iii) Size secnarelot rof steehs llA lanimoN ezis ’
)vi )a ecafruS hsinif fo :setanimal
sehctarcS
stiP
noitatnedI llA lluF teehs
niP seloh
noisulcnI I
)b hsiniF fo latem liof 1 003 x 003

)v ssaM fo latem liof 1 001 x 001

)iv ytilibahcnuP 2 003x08
)iiv lanoisnemiD ytilibats 3 003 x 003
)iiiv woH llA lluF teehs + 1 ( 003 x 003 )
)xi tsiwT llA lluF teehs
)x woB retfa gnihcte dna gnitaeh 1 003 x 003
)ix tsiwT retfa gnihcte dna gnitaeh 1 003 x 003
)iix ytilibaredloS 1 001 x 001
)iiix gniretsilB retfa taeh kcohs 1 001 x 001
)vix Peel :htgnerts
retfA taeh kcohs
retfA yrd taeh
retfA erusopxe ot tnevlos ruopav
. 4 spirts
retfA erusopxe ot detalumis noitidnocgnitalp
tA hgih erutarepmet
retfA erutarepmet gnilcyc
)vx lluP fo htgnerts , .dnalOl ynA tneinevnoc ezis
)ivx dluoM htworg nehw( elbacilppa ) 4 05x05

2
IS 5921 ( Part 1) : 1993
Table 1 (concluded )
sl No. Tests No. of selpmaS eziS of nemicepS
)mm(
(1) (2) (3) (4)
:t STSETLACIRICELE-NON ON ESAB LAIRETAM
20 x
i) Flexural strength 5 in each of 2 10 f 0.5 or
directions 20 x 25 to.5
ii) Flammability (when applicable ):
Horizontal burning of rigid materials 4 125 * 5 x 13 t 1
Vertical burning of rigid materials 10 12.5*5x13*1
Vertical burning ol flexible materials 4 450 x 25
iii) Water absorption 3 50x50
iv) Coefficient of linear thermal expansion 3 Convenient size
v) Measling 4 15x50
vi) Glass transition temperature
a) Different scanning calorimetry Suitable size
b) Thermomechanical analysis Suitable size
vii) Cure factor Suitable size
NOTE-Whenever four or multiple of four samples are required, number of samples shall be equally distributed to cut from each
sheet.
5.1.2 Acceptance Tests 5.2 General Conditions for Test
ehT ecnatpecca tests llahs eb ni ecnadrocca htiw
52.1 Atmospheric Conditions for Testing
elbaT 2. ehT LQA tnecreit evitcefed ) dna noitcepsni
slevel llahs eb deificeps ni the liated .noitacificeps sselnU esiwrehto deificeps lla the tests llahs eb deirrac
elbaT 2 ecnatpeccA stseT tuo rednu the dradnats cirehpsomta snoitidnoc as
deificeps ni SI 9000 ( Part 1 ) : 1977.
( Clasue 5.1.2 )
puorG eltiT of tseT 5.2.2 Material Process and Finish
(1) (2)
dalc-lateM setanimal llahs eb derutcafunam dna
0 Visual examination processed ni a luferac dna ekil-namkrow relmam ni
ecnadrocca htiw dnuos gnireenigne .ecitcarp ehT
A Dimension and tolerance
Surface finish : setanimal llahs eb mrofinu dna llahs eb free of ,selknirw
Pits sretsilb dna other defects hcihw lliw affect ecnaraeppa
Dents dna .ytilibaecives llA dalc-latem setanimal of the emas
Pinhoks ,epyt noitisopmoc dna ssenkciht llahs eb mrofinu ni
Scratches ,erutxet hsinif dna deificeps .seitreporp
Fzl, ) as received
5.2.3 Other Precautions
Solderability gniruD stnemerusaem the esab lairetam llahs ton eb
Solder float ( for glass apoxy ) exposed ot ,sthguard tcerid syar-nus dna other -neulfni
(Inetched specimens ces ylekil ot esuac errors.
Etched specimens 5.2.4 Dimensions of Test Specimens with Number
Un-fl uxed
Required
Fluxed
srebmuN dna s.noisLie1uid of test snemiceps for each
Peel strength
test are nevig ni elbaT 1.
After solder fleat
At elevated temperature 5.2.5 Preparation of Test Sheets and Specimen from
After exposure to plating solution Metal-clad Base l.t1iretaM
Volume resistivity
Surface resistivity 5.2.5.1 Preparation of specimens
Dielectric constant and dissipation
snemicepS llahs eb ,tuc sawed dna denihcam morf the
factor
3
SI 5921 (Part 1) : 1993
elpmas sheet. A htdiw of 12.7 mm morf the edge llahs fI ,deriuqer esremmi the nemiceps ni 10 -rep
ton eb desu for .snemiceps nehW ,elbacilppa the -cerid tnec noitulos ’lo cilaxo dica ni water at 15 ot
noit of ,niarg esiwhtgnel dna ,esiwssorc llahs eb ylraelc 35 ‘C for 15 OI 20 .setunim ehT nemiceps
.denifed roF the leep htgnerts test, snemiceps llahs eb llahs neht .~1 dehsa\\ ni dloc gninnur water (at
tuc morf two yllanogaid etisoppo srenroc of each 15 ot 35 .)C“
elpmas sheet. rehtruF noitaraperp llahs eb denifed ni
the test .dohtem NOTE- nI redro ot erusne eht lavomer fo gnihcte
seudiser no eht draoh ecafrus hcihw( fi ton devomer
5.2.5.2 Washing dna printing to form test pattern erofeb gniyrd yam erefretni ni eht lacirtcele -reporp
seit sa llew sa esuac gniredlos )smelborp eht dica
fI a test nrettap si ot eb ,demrof the latem face of a noitazilartuen dluohs eb deirrac ,tuo 5 ot 10 tnecrep
elpmas of the sheet rednu test tsrif eb washed htiw noitulos fo cilaxo dica ro cirolhcordyh dica yam eb
water, na evisarba powder (for ,elpmaxe edarG 240 desu retfa cirref edirolhc .gnihcte
)ecimup ,dna fi ,yrassecen muidosirt phosphate litnu
water lliw niamer ni na nekorbnu mlif gnirevoc the fI the test nreuap has neeb ,demrof the tsiser
elohw face. llahs eb devomer yb yna elbatius ,snaem for
,elpmaxe yb the esu of ecimup or other gninaelc
ehT nrettap llahs eb detnirp no the latem face yb snaem
.stnega
of gnivargneotohp or other euqinhcet gnivig the
deificeps .ycarucca NOTE- To evomer eht ,tsiser eht snemiceps era
5.2.5.3 Method of etching debburcs htiw edarg 240 ecimup ro depiw htiw tnil
eerf htolc denetsiom htiw a elbatius tnevlos hcihw
gnihctE whether for gnimrof test snrettap or for the
seod ton tceffe eht .etanimal
etelpmoc lavomer of the ,liof llahs eb deirrac tuo as per
yna of the gniwollof .sdohtem ynA eudiser of ecimup or other gninaelc tnega
llahs eb washed off htiw hsurb rednu gninnur
a>
By use offerric chloride - gnihctE llahs eb deirrac tap water (of ytivitsiser ton ssel .2SOlnaht )m
tuo htiw a yraps or yb na tnelaviuqe ,dohtem htiw for as gnol as yrassecen ot evomer ecafrus
na suoeuqa noitulos of cirref edirolhc of cificeps noitanimatnoc yllausu( 15 ot 30 .)setunim
ytivarg 1.32 ot 1.41 (35 ot 42 .)emuaB ehT ehT gninaelc process llahs eb deunitnoc
erutarepmet of the noitulos llahs eb 24 ot 38 .C“ litnu water lliw niamer ni na nekorbnu mlif
gnirevoc the elohw latem face of the test
fI a test nrettap si gnieb ,demrof the gnihcte emit .nemiceps
llahs eb tneiciffus ot ecudorp a raelc dna tcnitsid
.egami ehT nemiceps llahs neht eb desnir three ,semit
for 2 ot 3 setunim each ,emit ni tnereffid stol
ehT gnihcte emit for sliof of preferred ssam per of dellitsid water (of ytivitsiser ton ssel naht
tinu area llahs ton exceed those nwohs ni the 1 000 sz. n1>.
gniwollof :elbat
Cart llahs eb nekat ot eziminim attack or

noisarba of yna evisehda reyal or etanimal yb
Nominalmass : 152 230 305 610 915 ecimup or .tnevlos
qf,foil, g/u12
Etching time, : 6 6 7 14 21 nemicepS ton gnivlovni esu of tsiser deen ton
Max, setunim eb .debburcs
roF sliof fo etaidennetui ,ssam eht mumixam b) By use of ammonium persulphate - gnihctE
llahs eb enod yb esu of a noitulos of 298 + 10
guihcte emit llahs eb denimreted yb raenil -retui
l/g of muinomma etahplusrep ciruhplus dna
.uoitalop
15.5 + 1 l/lm of ciruhplus dica cificeps( ytivarg
1.836). ehT eriharepmet eb~llahs ta~deniatniam
roF sliof edistuo the nevig ,egnar the mumixam
43 * 3 .)C“
gnihcte emit llahs eb agreed neewteb the
resahcrup dna the .rerutcafunam/reilppus
retfA gnihcte the nemiceps llahs eb washed dna
deird as detseggus ni suoiverp dohtem [ see
fI derisednu selcitrap of copper niamer after the
5.2.5.3 (a)].
,gnihcte the nemiceps llahs ton eb desu for -tset
.gni
5.2.5.4 ecafruS water llahs neht eb devomer morf ti dna
llahs eb deird of 4 sruoh + 10 setunim at 55 ti 2 OC or
yletaidemmI after ti si etched, the nemiceps si
for 1 h at 85 OC (for ssalg )yxope ni na .nevo
washed ni gnitmur tap water (at 15 ot 35 )C“ for
2 ot 5 .setunim 5.25.5 llA tests llahs start nihtiw 3 weeks of lavomer

4
IS 5921 ( Part 1) : 1993
morf the .nevo gniruD siht ,emit litnu gninoitidnocerp 6 STSETLACIRTCELE
gnidrocca ot 5.2.1 si started, the snemiceps llahs eb kept
ni a elbatius .reniatnoc 6.1 ecnatsiseR of Foil
5.2.5.6 Visual examinntion ofprepared sample 6.1.1 Test Specimen
nehW snemiceps are deraperp~ as ,evoba the latem The test nenticeps llahs eb a pirts of latem dalc esab
lairetam 2.5 2 0.2 mm ediw dna yletamixorppa 330 mm
liof llahs eb ylidaer elbavomer morf dalc secafrus of
,gnol tuc eht-morf sheet rednu test. stI ssenkciht llahs
the .etanimal erehT llahs eb ton erom naht eno eceip
eb that of sheet rednu test. ruoF snemiceps llahs eb
of laudiser latem per 0.5 *m of ecafrus denimaxe dna
tested.
siht eceip llahs ton evah na area greater naht that of
a elcric 0.1 mm ni .retemaid erehT llahs eb on 6.1.2 Procedure
ecnedive of other cillatem selcitrap or ngierof
slairetam no the etched ecafrus of the desab etanimal ehT test nemiceps llahs eb decalp htiw sti liof ecafrus
or deddebme .niereht ehT ecafrus of the esab ni tcatnoc htiw enil or tniop stcatnoc 150 * 1 mm apart.
etanimal llahs show on ecnedive of evaew erusopxe eniL stcatnoc llahs hcuot the liof across sti elohw htdiw
or erutxet .erusopxe dna llahs eb at thgir selgna ot the rojam sixa of the test
.nemiceps ehT ecnatsid neewteb tnerruc stcatnoc llahs
5.2.5.7 Precautions to be taken in certain electrical eb 300 ,mm the laitnetop stcatnoc llahs eb 05I 2 1 mm
tests apart dna at lauqe ecnatsid morf the tnerruc stcatnoc as
nwohs ni .giF 1.
In niatrec lacirtcele tests ti si yrassecen ot draug tsniaga
noitanimatnoc of the test .nemiceps gniruD these tests, ehT ecnatsiser of the liof neewteb the stcaitloc llahs
gnildnah of the snemiceps dluohs eb kept ot a -inim eb .derusaem ehT tnerruc llahs eb kept llams hguone
,mum the snemiceps gnieb dleh yb the edges or yb the ot diova gnitaeh the nemiceps ;ylbaicerppa sti -ixam
gnitcennoc seriw as .etairporppa naelC rebbur or mum eulav llahs eb nevig ni the tnaveler -acificeps
enehtylop sevolg llahs eb .desu noit .
ehT esu of serutxif htiw gnirps dedaol stcatnoc sevomer ehT tneibma erutarepmet llahs eb derusaem dna
the deen of gnitceimoc ,seriw srefflos dna .sexulf fI the derusaem ecnatsiser llahs eb corrected ot
gnitcennoc seriw are gnieb attached, care llahs eb nekat 20 oc.
ot tneverp yna noitanimatnoc of the ecafrus of the
gnitalusni esab lairetam yb redlos .xulf A ksam dluohs roF the copper of 96 tnecrep ytivitcudnoc the noitcerroc
eb desu for siht .esoprup factor si nevig :yb
ehT esu of stnevlos for gnivomer stnanimatnoc yam
tluser ni gnidaerps the stnanimatnoc revo the elohw 1
.ecafrus K = 1 300.0~+ 78 (t - 20)
ehT tnaveler sesualc show where these snoitaucerp are

.dedeen

CURRENT
SUPPLY
/
All dimensions in millimetres.
.GIF 1 ARRANGEMENOT FT HEP OSITIONO F CURRENTS UPPLYA NDV OLTAGEM EAWREMENT
5