0.30.05 0.50.1 l p h h d insulation coating marking trimming line ceramic core electrode cap terminal resistive film rf26 coat-insulated fusing resistors (l-style) features ? function s as a resistor in normal condition ? quick fusing protects circuit from excessive overload ? high density mounting and excellent self-standing strength with l-shape leads frame (lead pitch. 5.08mm) ? flame - retardant coating equivalent to ul94 v-0 ? marking : b lue body color with color dot marking ? products meet eu rohs requirements eu d imensions and construction applications and ratings ordering information type dimensions inches (mm ) l max. d max. p h h max. rf26 2e .285 (7.25) .100 (2.54) .200.012 (5.080.3) .197.039 (5.01) .217 (5.5) rated ambient temperature: +70c operating temperature range: -40c - +155c rated voltage = power ratingresistance value t .c.r. (10 ?6 / k) b: 350 pro duct co de power rating 2e: 0.25w packaging a: ammo nominal resistance 3 digits resistance tolerance j: 5% terminal surface material t: sn rf26 b 2e t taping & forming t: taping t a 100 j power rating resistance range ( ) j: 5% fusing characteristics t.c.r. ( 10 ?6 /k ) dielectric withstanding voltage taping & qty/ammo ( pcs ) fusing power fusing time t 0.25w 0.1 - 1k ( e24 ) 10w 0.1 - 0.18 7. 5w 0.2 - 0.43 6.25w 0.47 - 0.91 3.75w 1.0 - 4.7 3w 5.1 - 1k 30 sec max. 350 250v 2,000 resistors specifcations given herein may be changed at any time without prior notice. please confrm technical specifcations before you order and/or use. 11/29/11 156 koa speer electronics, inc . ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com
resistors specifcations given herein may be changed at any time without prior notice. please confrm technical specifcations before you order and/or use. 12/14/09 157 koa speer electronics, inc . ? 199 bolivar drive ? bradford, pa 16701 ? usa ? 814-362-5536 ? fax: 814-362-8883 ? www.koaspeer.com rf26 coat-insulated fusing resistors (l-style) 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. i-r characteristics rf26b2e 0.22? 100 60 30 10 6 3 1 10 fusing time (s) rf26b2e 10? 100 60 30 10 6 3 1 magnification to power rating magnification to power rating fusing time (s) 20 30 40 50 10 20 30 40 50 rf26b2e 0.22? 100 60 30 10 6 3 1 10 fusing time (s) rf26b2e 10? 100 60 30 10 6 3 1 magnification to power rating magnification to power rating fusing time (s) 20 30 40 50 10 20 30 40 50 performance characteristics performance requirements test items ? r (% +0.05 ) test methods limit typica l 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 3 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.
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