approval sheet page 1 of 9 asc_wa04/06_v15 oct.2010 wa04, wa06 1%, 5%, convex type & concave type general purpose chip resistors array size 0402x2 (4p2r) size 0402x4, 0603x4 (8p4r) size 0602x8 (16p8r) *contents in this sheet are subject to change witho ut prior notice.
approval sheet page 2 of 9 asc_wa04/06_v15 oct.2010 feature 1. small size and light weight 2. reduced size of final equipment 3. lower surface mounted assembly costs 4. higher component and equipment reliability 5. rohs compliant and lead free products. application consumer electrical equipment edp, computer application telecom description the resistors array is constructed in a high grade ceramic body (aluminum oxide). internal metal elect rodes are added at each end and connected by a resistive past e that is applied to the top surface of the substra te. the composition of the paste is adjusted to give the ap proximate resistance required and the value is trim med to within tolerance by laser cutting of this resistive layer. the resistive layer is covered with a protective co at. finally, the two external end terminations are added. for ease of soldering the outer layer of these end term inations is tin (lead free) alloy. fig 1. consctruction of a chip-r array (convex type ) fig 2. consctruction of a chip-r array (concave t ype)
approval sheet page 3 of 9 asc_wa04/06_v15 oct.2010 quick reference data item general specification series no. wa04y(convex) wa04x(convex) wa06x(convex) wa06w(convex) wa06t(con cave) size 0402x2 (1005x2) 0402x4 (1005x4) 0603x4 (1608x4) 0602x8 (1605x8) 060 3x4 (1608x4) resistance tolerance 5% 1% 5% 1% 5% 1% 5% 1% 5% resistance range 3 w ~ 1m w , jumper 10 w ~ 1m w 3 w ~ 1m w jumper 10 w ~ 1m w 1 w ~ 10m w jumper, 10 w ~ 100k w , 10 w ~ 100k w jumper, 10 w ~ 1m w , 10 w ~ 1m w , jumper tcr (ppm/ c) 10 w r 1m w r<10 w , r>1m w 300 400 200 - 200 -300~+500 100 - 200 -300~+500 200 - 200 - 200 - 200 - max. dissipation at t amb =70 c 1/16 w 1/16 w 1/10 w 1/16 w 1/10 w max. operation voltage (dc or rms) 25v 50v 50v 50v 50v max. overload voltage 50v 100v 100v 100v 100v climatic category 55/155/56 55/155/56 55/155/56 note : 1. climatic category refer to iec 60068 2. this is the maximum voltage that may be continuo usly supplied to the resistor element, see iec publ ication 60115-8 3. max. operation voltage : so called rcwv (rated cont inuous working voltage) is determined by value resistance power rated rcwv = or max. rcwv listed above, whichever is lower. dimensions (unit : mm) wa04y l 1.00 0.10 w 1.00 0.10 t 0.35 0.10 p 0.65 0.10 a 0.34 0.10 ta 0.20 0.15 tb 0.25 0.17 t t b w l a t a p
approval sheet page 4 of 9 asc_wa04/06_v15 oct.2010 wa04x wa06x l 2.00 0.10 3.20 0.10 w 1.00 0.10 1.60 0.10 t 0.45 0.10 0.50 0.10 p 0.50 0.05 0.80 0.10 a 0.40 0.10 0.60 0.10 b 0.20 0.10 0.30 0.10 c 0.30 0.05 0.40 0.10 g 0.25 0.10 0.30 0.20 wa06w l 4.00 0.20 w 1.60 0.15 t 0.45 0.10 b 0.30 0.20 g 0.30 0.20 d 0.20 0.10 p 0.50 0.20 h1 0.40 0.20 h2 0.30 0.10 wa06t l 3.20+0.20/-0.10 w 1.60+0.20/-0.10 t 0.60 0.10 p 0.80 0.10 a 0.60 0.15 b 0.35 0.15 c 0.50 0.15 g 0.50 0.15
approval sheet page 5 of 9 asc_wa04/06_v15 oct.2010 marking 3-digits marking for e24 series 1% ,5% products each resistor is marked with a three digits code on the protective coating to designate the nominal re sistance value. for values up to 9.1 the r is used as a deci mal point. for values of 10.0 or greater the first 2 digits apply to the resistance value and third indicate th e number of zeros to follow. example resistance 4.7 w 10 w 100 w 6800 w 47000 w 3-digits marking 4r7 100 101 682 473 no marking for wa04y chip resistors array and e96 s eries resistance. functional description product characterization standard values of nominal resistance are taken fro m the e24 series for resistors with a tolerance of 5%, the values of the e24 series are in accordance with iec publication 60063 standard values of nominal resistance are taken fro m the e24/e96 series for resistors with a tolerance of 1%, the values of the e24/e96 series are in accorda nce with iec publication 60063 derating the power that the resistor can dissipate depends o n the operating temperature; see fig.3. figure 3 maximum dissipation in percentage of rated power as a function of the ambient temperature construction r1=r2=r3=r4
approval sheet page 6 of 9 asc_wa04/06_v15 oct.2010 mounting due to their rectangular shapes and small tolerance s, surface mountable resistors are suitable for han dling by automatic placement systems. chip placement can be on ceramic substrates and pri nted-circuit boards (pcbs). electrical connection to the circuit is by individu al soldering condition. the end terminations guarantee a reliable contact. soldering condition the robust construction of chip resistors allows th em to be completely immersed in a solder bath of 26 0 c for 10 seconds. therefore, it is possible to mount surface mount resistors on one side of a pcb and other dis crete components on the reverse (mixed pcbs). surface mount resistors are tested for solderabilit y at 235 c during 2 seconds. the test condition for no leaching is 260 c for 30 seconds. typical examples of soldering pro cesses that provide reliable joints without any damage are given in fig 4. fig 4. infrared soldering profile for chip resistor s array
approval sheet page 7 of 9 asc_wa04/06_v15 oct.2010 test and requirements(jis c 5201-1 : 1998) essentially all tests are carried out according to the schedule of iec publication 115-8, category lct / uct /56(rated temperature range : l ower c ategory t emperature, u pper c ategory t emperature; damp heat, long term, 56 days). the testing also meets t he requirements specified by eia, eiaj and jis. the tests are carried out in accordance with iec pu blication 68, "recommended basic climatic and mecha nical robustness testing procedure for electronic compone nts" and under standard atmospheric conditions acco rding to iec 60068-1, subclause 5.3. unless otherwise spe cified, the following value supplied : temperature: 15 c to 35 c. relative humidity: 45% to 75%. air pressure: 86kpa to 106 kpa (860 mbar to 1060 mb ar). all soldering tests are performed with midly activa ted flux. requirement test procedure resistor jumper dc resistance clause 4.5 dc resistance values measured at the test voltages s pecified below : <10 w @0.1v,<100 w @0.3v,<1k w @1.0v,<10k w @3v, <100k w @10v, <1m w @25v, <10m w @30v within the specified tolerance < 50m w temperature coefficient of resistance (t.c.r) clause 4.8 natural resistance change per change in degree cent igrade. ( ) 6 1 2 1 1 2 10 - - t t r r r (ppm/ c) t 1 : 20c+5c-1c r 1 : resistance at reference temperature r 2 : resistance at test temperature refer to quick reference data n/a short time overload (s.t.o.l) clause 4.13 permanent resistance change after a 5second applicat ion of a voltage 2.5 times rcwv or the maximum overload volta ge specified in the above list, whichever is less. d r/r max. (2%+0.10 w ) < 50m w resistance to soldering heat(r.s.h) clause 4.18 un-mounted chips completely immersed for 10 1second in a sac solder bath at 260 5 o c r/r max. (1%+0.05 ) no visible damage < 50m w solderability clause 4.17 un-mounted chips completely immersed for 20.5 seco nd in a sac solder bath at 235 5 good tinning (>95% covered) no visible damage temperature cycling clause 4.19 30 minutes at -55 c 3 c, 2~3 minutes at 20c+5c-1c, 30 minutes at +155 c 3 c, 2~3 minutes at 20c+5c-1c, total 5 continuous cycles r/r max. (1%+0.05 ) no visible damage < 50m w load life (endurance) clause 4.25 1000 +48/-0 hours, loaded with rcwv or vmax in chambe r controller 70 2 o c, 1.5 hours on and 0.5 hours off r/r max. (3%+0.10 ) for 10 r<1m ; r/r max. (5%+0.10 ) for r<10 , r 1m < 50m w load life in humidity clause 4.24 1000 +48/-0 hours, loaded with rcwv or vmax in humidi ty chamber controller at 40 c 2 c and 90~95% relative humidity, 1.5hours on and 0.5 hours off r/r max. (3%+0.10 ) for 10 r<1m ; r/r max. (5%+0.10 ) for r<10 , r 1m < 50m w adhesion clause 4.32 pressurizing force: 5n, test time: 10 1sec. no remarkable damage or removal of the terminations. insulation resistance clause 4.6 apply the maximum overload voltage (dc) for 1minute r R 10g dielectric withstand voltage clause 4.7 apply the maximum overload voltage (ac) for 1 minute no breakdown or flashover
approval sheet page 8 of 9 asc_wa04/06_v15 oct.2010 test condition for jumper (0 w ww w ) item wa04y wa04x wa06x wa06w wa06t power rating at 70 c 1/16w 1/16w 1/10w 1/16w 1/10w resistance max.50m w max.50m w max.50m w max.50m w max.50m w rated current 1a 1a 1a 2a 1a peak current 1.5a 1.5a 3a 3a 3a operating temperature -55~155 c -55~155 c -55~155 c -55~155 c -55~155 c catalogue numbers the resistors have a catalogue number starting with . wa x xxxx x x l size code 06: 0603 (1608) 04:0402(1005) type code x : x 4, convex y : x 2, convex w :x 8, convex t : x 4, concave resistance code 5% e24 : 2 significant digits followed by no. of zeros and a blank 4.7 w =4r7_ 10 w =100_ 220 w =221_ jumper =000_ (_ means a blank) 1%, e24+e96 : 3 significant digits followed by no. of zeros 100 w =1000 37.4k w =3742 tolerance f: 1% j : 5% p : jumper packaging code t : 7 reel taping b : bulk termination code l = sn base (lead free) wa06x, wa06t 1. reeled tape packaging : 8mm width paper taping 5 000pcs per reel. 2. bulk packaging : 5000pcs per polybag wa06w 1. reeled tape packaging : 12mm width paper taping 5000pcs per reel. 2. bulk packaging : 5000pcs per polybag wa04x, wa04y 1. reeled tape packaging : 8mm width paper t aping 10,000pcs per reel.
approval sheet page 9 of 9 asc_wa04/06_v15 oct.2010 packaging paper tape specifications (unit :mm) symbol a b w f e wa06x,wa06t 3.60 0.20 2.00 0.20 wa04x 2.20 0.20 1.20 0.20 3.50 0.20 wa04y 1.15 0.10 1.15 0.10 8.00 0.30 3.50 0.05 1.75 0.10 wa06w 2.0 0.0 20.4 +- 12.0 0.0 80.1 +- 12.00 0.10 5.50 0.05 1.75 0.10 symbol p1 p0 f d t wa06x,wa06t 4.00 0.10 max. 1.0 wa04x max. 0.6 wa04y 2.00 0.05 1.0 0.0 50.1 +- f 0.45 0.05 wa06w 4.00 0.10 4.00 0.10 ? d1.550.05 0.80 0.05 reel dimensions symbol a b c d wa06x,wa04y,wa04x,wa06t f 178.0 2.0 f 60.0 1.0 13.0 0.2 9.0 0.5 wa06w f 178.0 2.0 f 60.0 1.0 13.0 0.2 12.4 1.0
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