?d mark ing flame retardant insulating coating electrode ca p lead wire ll c resistive film d trimming line ceramic core rf coat-insulated fusing resistor features ? functions as a resistor in normal condition ? quick fusing protects circuit from excessive overload at an abnormal time ? flame-retardant coating equivalent to ul94 v-0 ? marking: blue body color with color code marking ? products meet eu rohs requirements eu dimensions and construction ratings ordering information type dimensions inches (mm) l c max. d d (nominal) l* rf16 .125.008 (3.20.2) .134 (3.4) .461... (1.7 ) .018 (0.45) 1.18.118 (303) rf25 .248.020 (6.30.5) .280 (7.1) .091.012 (2.30.3) .024 (0.6) rf50 .335.020 (8.50.5) .374 (9.5) .118.012 (3.00.3) rf1 .354.039 (9.01.0) .437 (11.1) .138.020 (3.50.5) .031 (0.8) rf2 .610.039 (15.51.0) .709 (18.0) .236.039 (6.01.0) * lead length changes depending on taping and forming type. +.25 ?0 +.010 ?0 rf 100 j t52 c a product code nominal resistance 3 digits resistance tolerance j: 5% 25 power rating 16: 0.17w 25: 0.25w 50: 0.5w 1: 1w 2: 2w taping & forming see table below terminal surface material c: sncu packaging a: ammo r: reel rated ambient temperature: +70c operating temperature range: ?40 C +155c type power rating resistance rang e e24 j: 5% dielectric withstanding voltage t.c.r. 10 ?6 /k fusing characteristics fusing power fusing time rf16c 0.17 w 1.0 - 1k 3w 2.5w 60 sec 1 - 4.7 5.1 - 1k max. 10w 7.5w 6.25w 3.75w 3w 250v rf25c 0.25w 0.1 - 10k 0.1 - 0.18 0.2 - 0.43 0.47 - 0.91 1 - 4.7 5 .1 - 2.2k 2.4k - 10k 1000: 12.5w 7. 5w 6w r 4.7 rf50c 0.5w 0.1 - 15k 0.1 - 0.43 0.47 - 2 2.2 - 1k 300v 1.1k - 15k 30 sec 350: 30w 25w 15w 12w max. r 5.1 rf1c 1w 0.1 - 10k 0.1 - 0.18 0.2 - 0.43 0.47 - 2 2.2 - 1k 350v 1.1k - 10k rf2c 2w 1.0 - 3k 36w 30w 24w 600v 1 - 3.6 1.1k - 3k 3.9 - 1k rated voltage = power ratingresistance value resistors specifcations given herein may be changed at any time without prior notice. please confrm technical specifcations before you order and/or use. 11/29/11 154 koa speer electronics, inc . ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com
specifcations given herein may be changed at any time without prior notice. please confrm technical specifcations before you order and/or use. 12/30/10 155 koa speer electronics, inc . ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com resistors rf coat-insulated fusing resistor performance characteristics environmental applications fusing characteristics derating curve 100 80 60 40 20 0 -40 -20 02 04 06 08 0 100 120 140 70 160 155 % rated power ambient temperature (c) for resistors operated at an ambient temperature of 70c or above, a power rating shall be derated in accordance with derating curve on the left. performance requirements test items ? r (% +0.05 ) test methods limit typical resistance within specified 25c tolerance t.c.r. within specified t.c.r. room temperature +100c overload (short time) 1% 0.5% rated voltage 2.5 for 5 seconds resistance to 1% 0.5% 350c 10c, 3.5s 0.5s or 260c 5c, 10s 1s soldering heat rapid change 1% 0.5% ?40c (30 min.) / +85c (30 min.) 5 cycles of temperature moisture resistance 5% 2.5% 40c 2c, 90% - 95% rh, 1000 hours 1.5h o n/ 0.5h off cycle endurance at 70c 5% 2.5% 70c 2c, 1000 hours 1.5h o n/ 0.5h off cycle r esistance to solvent no abnormality in the resistor shall be immersed in ipa for 30 sec. appearance. marking shall be easily legible. flame retardant no evidence of flaming flame test : the test flame shall be applied and removed or self-flaming. for each 15 sec respsctively to repeat the cycle 5 times. overload flame retardant: power corresponding to 2, 4, 8, 16 and 32 times the power rating shall be applied for each 1min. until disconnection occurs. 100 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 60 30 10 6 3 1 magnification of power rating rf16 10 rf25 10 rf50 10 rf1 10 rf2 10 fusing time
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