document number: 53033 revision 11-mar-03 www.vishay.com 40 PRA 100,135,182 vishay thin film surface mount networks vishay thin film ? france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ? germany +49.9287.710 fax: +49 9287.70435 ? israel +972.3. 557.0945 fax: +972.3.558.9121 ? italy + 39.2.300.11919 fax: +39.2.300.11999 ? japan +81.3.5464.6411 fax: +81.3.5464.6433 ? singapore +65.788.6668 fax: +65. 788.0988 ? sweden +46.8.594.70590 fax: +46.8.594.70581 ? uk +44 191 514 8237 fax: +44 1953 457 722 ? usa: (610) 407-4800 fax: (610) 640 -9081 e fg c d b a termination features ? very short deliveries even on specials ? high stability passivated nichrome resistive layer ? tight t.c.r. (10ppm/ c) and t.c.r. tracking (to 1ppm/ c) ? very low noise and voltage coefficient ? ratio tolerance to 0.01% ? pre-tinned or gold terminations over nickel barrier number of resistors: 2 to 8 r1 = r2 =.... r8 i : independent resistors electrical diagram land pattern r1 r2 r7 r8 dimensions dim. PRA 100 PRA 135 PRA 182 mm mil mm mil mm mil a 1.6 63 1.85 72 3 118 b 0.4 16 0.4 16 0.4 16 c 0.65 25.5 1.05 41 1.3 51 d 0.25 10 0.25 10 0.25 10 e* e = (n x f) 0.2mm e = (n x f) 8mil f 1 40 1.35 53.1 1.82 72 g 0.38 15 0.38 15 0.38 15 p 0.7 27.5 1.05 41.3 1.52 59.8 q 0.3 12 0.3 12 0.3 12 r 1 40 1 40 1 40 s 0.6 23.5 0.8 31.5 1.8 70.8 *e depends on number of resistors + 0.2 - 0.1 + 0.2 - 0.1 + 0.2 - 0.1 PRA 100 i 2 10k ? 0.5 % 0.1% b model schematic number ohmic value absolute ratio termination of resistors tolerance tolerance PRA 100 i : independent 2 to 8 for different ohmic 0.1 % 0.1% b : tinned over PRA 135 resistors values on a given 0.5 % 0.05% nickel barrier PRA 182 c : common point network a specific 0.02% resistors part number is issued 0.01% (e.g. cnwxxx) ordering information r r f p s q number of resistors: 2 to 8 r1 = r2 =.... r8 c : one common point n resistors r1 r2 r7 r8 e fg c d b a high precision resistor arrays PRA arrays can be used in most applications requiring a matched pair (or set) of resistor elements. the networks provide 1ppm/ c t.c.r. tracking, a ratio tolerance as tight as 0.01% and outstanding stability. they are available in 1 mm, 1.35mm and 1.82mm pitch. + 0.2 - 0 + 0.2 - 0 + 0.2 - 0 + 0.2 - 0.2 + 0.2 - 0.2 + 0.2 - 0.2 + 0.15 - 0.15 + 0.15 - 0.15 + 0.35 - 0.15
www.vishay.com 41 PRA 100,135,182 vishay thin film document number: 53033 revision 11-mar-03 surface mount networks vishay thin film ? france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ? germany +49.9287.710 fax: +49 9287.70435 ? israel +972.3.557.0945 fax: +972.3.558.9121 ? italy + 39.2.300.11919 fax: +39.2.300.11999 ? japan +81.3.5464.6411 fax: +81.3.5464.6433 ? singapore +65.788.6668 fax: +65.788.0988 ? sweden +46.8.594.70590 fax: +46.8.594.70581 ? uk +44 191 514 8237 fax: +44 1953 457 722 ? usa: (610) 407-4800 fax: (610) 640-9081 electrical specifications resistance range : PRA 100......100 ? to 200k ? PRA 135......100 ? to 300k ? PRA 182......100 ? to 1m ? tolerances : absolute... 0.5% to 0.1% ratio...0.1% - 0.05% - 0.02% - 0.01% temperature coefficient : absolute...... 10ppm/ c (- 40 c +125 c) ratio......2ppm/ c (1ppm/ c on request) power rating : PRA 100......100mw/resistor at + 70 c PRA 135......100mw/resistor at + 70 c PRA 182......125mw/resistor at + 70 c operating temperature range : - 55 c to + 155 c noise : - 35 db voltage coefficient : 0.01ppm/v limiting voltage : PRA 100.......35v PRA 135.......75v PRA 182......100v high precision resistor arrays % rated power drifts tests conditions absolute per ratio cecc requirements (typical values) overload 2.5un/2s 0.05% rn + 0.05 ? 0.01% rn climatic sequences - 55 c + 155 c/5 moisture cycles 0.1% rn + 0.05 ? 0.01% rn thermal shock - 55 c + 155 c/5 cycles 30 0.05% rn + 0.05 ? 0.01% rn load life 1000h/pn at + 70 c 0.1% rn + 0.05 ? 0.02% rn resistance to solder heat 260 c/10s 0.05% rn + 0.05 ? 0.01% rn moisture resistance 0.01pn at + 40 c 93% rh 0.1% rn + 0.05 ? 0.01% rn high temperature storage 1000h/no load at + 155 c 0.1% rn + 0.05 ? 0.02% rn rn : nominal resistance performance special features resistance values can be different on a given network (r max. /r min. as high as 300) with no tooling charge and short delivery. please, consult vishay sfernice for ohmic values, tolerances and also temperature coefficient (e.g. 1ppm/ c) outside the standard range. packaging several types of packaging are available: tube, waffle- pack and tape and reel marking on the primary package, printed information includes vishay s.a. trademark series and model, schematic number of resistors, ohmic value, absolute tolerance, ratio tolerance, type of termination: b tinned over nickel barrier or g gold over nickel barrier. mechanical specifications substrate : alumina technology : thin film film : nickel chromium with mineral passivation terminations : b type : pre-tinned over nickel barrier 100 0 0 70 155 ambient temperature in degrees celsius power rating
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