52 koa speer electronics, inc. ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com specifications given herein may be changed at any time without prior notice. please confirm technical specifications before you order and/or use. 11/13/08 BLR ceramic case surface mount resistor features ? suitable to detect large current due to ultra low resistances ? flame retardant resistor in a ceramic case ? all custom-made products ? automatic mounting is available ? products with lead-free terminations meet eu rohs and china rohs requirements resistors eu dimensions and construction ordering information j: 5% k: 10% n: no surface treatment 3 digits 1l: 1w 2l: 2w 3l: 15w te: embossed plastic 1, 2: 1,000 pieces/reel 3: 750 pieces/reel BLR type power rating nominal resistance resistance tolerance termination material packaging new part # 1l te 50l j n size code .512.019 (130.5) .709.019 (180.5) .748.039 (191.0) .248.019 (6.30.5) CC .118.012 (3.00.03) .551.039 (141.0) .760.039 (19.31.0) .217.019 (5.50.5) .323.019 (8.20.5) CC .236.006 (6.00.5) .205.019 (5.20.5) .362 (9.2) CC .012 (0.3) 1l 2l 3l t w1 h w2 w l1 l dimensions inches (mm) CC .098.039 (2.51.0) .118.039 (3.01.0) t t h ceramic case electrode cement resistor element l1 l w1 w 1l & 2l t ceramic case cement resistor element l1 l electrode h heat sink w1 w w2 t 3l 1733 reader's spreads pg1-203:document 1/27/09 4:05 pm page 50
53 koa speer electronics, inc. ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com specifications given herein may be changed at any time without prior notice. please confirm technical specifications before you order and/or use. 1/08/09 BLR ceramic case surface mount resistor pms 300 neg. black neg. resistors operating temperature range rated ambient temperature resistance range* part designation power rating t.c.r. (ppm/c) max. applications and ratings BLR1l 1w BLR2l 2w BLR3l 15w** 8m - 50m 100 8m - 50m -40c to +180c +70c * please consult with us in advance about resistance value for custom-made products ** it is assumed to be used on aluminum circuit board derating curve environmental applications % rated po wer 100 80 60 40 20 -40 -20 0 2 06 08 01 001 201 60 70 40 ambient temperature (c) 0 140 180 performance characteristics parameter requirement ? r limit typical test method resistance 25c within specified tolerance CC t.c.r. room temp. +100c up within specified value CC cold resistance -55c, 1000 hours 5.0% 2.0% heat resistance +125c, 1000 hours 5.0% 2.0% moisture resistance 40c 2c, power rating x 1/10, 90% - 95% rh, 1000 hours, 1.5 hr on, 0.5 hr off cycle 5.0% 2.0% long life 70c 2c, 1000 hours 1.5 hr on, 0.5 hr off cycle 5.0% 2.0% 8m - 50m resistance tolerance j: 5% k: 10% 1733 reader's spreads pg1-203:document 1/27/09 4:05 pm page 51
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