page-1 approval sheet for wire wound resistors knp series 1% & 5% yageo corporation headquarters: 3f, no.233-1, pao chiao rd., hsin tien, taipei, taiwan, r.o.c. tel: 886-2-2917-7555 fax: 886-2-2917-4286 4 url: www.yageo.com.tw
page-2 1. product: wire wound resistors (normal & miniature style) green body color 2. part number: part number of the wire wound resistor is identified by the name, power, tolerance, packing, temperature coefficient, special type and resistance value. example knp 100 j t - 73- 100r (1) (2) (3) (4) (5) (6) (7) series power resistance packing temperature special resistance name rating tolerance style coefficient type value of resistance (1) style: knp series (2) power rating : -25=1/4w 50s=1/2ws -50=1/2w 1ws=1ws 100=1w 2ws=2ws 200=2w 3ws=3ws 300=3w 400=4w 5ws=5ws 500=5w 7ws=7ws (3) tolerance: f= 1% j= 5% (4) packaging type : r paper taping reel t tape on box packing b bulk packing (5) temperature coefficient (6) special type 52- = 52mm 73- = 73mm 91- = 91mm m = m-type forming for bulk mb = mb-type forming f = f-type forming for bulk fk = fk-type forming ffk = ffk-type forming fkk = fkk-type forming (7) resistance value e24 series example 0r1 1r 10r 100r
page-3 3. band-code: co l o r1 s t band 2nd band multiplier t o leran c e black 00 1 brown 1110 1 ( f ) red 22100 2 ( g ) orange 331k yellow 4 4 green 55 blue 66 v iolet 7 7 grey 8 8 white 9 9 gold 0.1 5 (j ) s ilver 0.01 4. electrical characteristics normal style style knp-25 knp-50 knp100 knp200 knp300 knp400 knp500 power rating at 70 1/4w 1/2w 1 w 2 w 3w 4 w 5 w standard value range 5% 1 ~22 0.1 ~47 0.1 ~100 0.1 ~150 0.1 ~330 0.1 ~330 0.1 ~390 maximum value range 5% 100 1k 2k 3k9 4k7 4k7 5k1 dielectric withstanding voltage 200v 300v minimum value range 5% 0.1 0.05 operating temp. range - 40 to + 200 temperature coefficient 300 ppm / miniature style style knp50s knp1ws KNP2WS knp3ws knp5ws knp7ws power rating at 70 1/2w 1 w 2 w 3w 5 w 7 w standard value range 5% 1 ~22 0.1 ~47 0.1 ~100 ~150 0.1 ~330 0.1 ~390 maximum value range 5% 100 1k 2k 3k9 4k7 5k1 dielectric withstanding voltage 200v 300v minimum value range 5% 0.1 0.05 operating temp. range - 40 to + 200 temperature coefficient 300 ppm / standard resistance is as the above list , below or over this resistance on request.
page-4 5. derating curve 6. dimensions d h l d style dimension normal miniature l d h d knp-25 knp50s 6.3 0.5 2.4 0.2 28 2.0 0.6 0.05 knp-50 knp1ws 9.0 0.5 3.3 0.3 26 2.0 0.6 0.05 knp100 KNP2WS 11.5 1.0 4.5 0.5 35 2.0 0.8 0.05 knp200 knp3ws 15.5 1.0 5.0 0.5 33 2.0 0.8 0.05 knp300 knp400 knp5ws 17.5 1.0 6.5 1.0 32 2.0 0.8 0.05 knp500 knp7ws 24.5 1.0 8.5 1.0 38 2.0 0.8 0.05 knp1ws ( for mb type ) d 0.8 0.05 mm 7. environmental characteristics (1) short time over load test at 2.5 times of the rated voltage applied for 5 seconds, the resistor should be free from defects after the resistor is released from load for about 30 minutes short time overload voltage = value resistance ng power rati * 5 . 2 the change of the resistance value should be within 2.0 % + 0.05 (2) dielectric withstanding voltage the resistor is placed on the metal v block. apply a table i dielectric withstanding between the terminals connected together with the block for about 60 seconds. the resistor shall be able to withstand without breakdown or flashover. rated load (%) 20 100 80 60 40 20 20 60 100 140 200 260 275 300 ambient temperature ()
page-5 (3) temperature coefficient test test of resistors above room temperature 100c 2c ( testing temperature 115c to 130c ) at the constant temperature silicon plate for over 5 minutes. then measure the resistance value. the temperature coefficient is calculated by the following equation and its value should be within the range of requested. 6 0 0 0 10 t t 1 r r r t coefficien e temperatur sistor re ? ? = r resistance value under the testing temperature r 0 resistance value at the room temperature t the testing temperature t o room temperature (4) insulation resistance apply test terminal on lead and resistor body. the test resistance should be high than 100m ohm. (5) solderability immerse the specimen into the solder pot at 235 5 c for 5 0.5 seconds. at least 95% solder coverage on the termination. (6) resistance to solvent the specimen into the appropriate solvent of ipa condition of ultrasonic machine for 1 minutes. the specimen is no deterioration of coatings and color code. (7) terminal strength direct load ? resistors shall be held by one terminal and the load shall be gradually applied in the direction of the longitudinal axis of the resistor unit the applied load reacheds 5 pounds the load shall be held for 10 seconds. the load of weight shall be R 2.5 kg ( 24.5n ). (8) rated load at 4 times of the rated voltage applied for 30 minutes, the resistor should be free from defects after the resistor is released from load for about 30 minutes the change of the resistance value shall be within 1.0% + 0.05 (9) load life in humidity place the specimen in a test chamber at 40 2 c and 90 ~ 95 % relative humidity. apply the rated voltage to the specimen at the 1.5 hours on and 0.5 hour off cycle. the total length of test is 1,000 hours the change of the resistance value shall be within 5 % + 0.05 (10) load life test placed in the constant temperature chamber of 70 3 c the resistor shall be connected to the lead wire at the point of 25mm. length with each terminal, the resistors shall be arranged not much effected mutually by the temperature of the resistors and the excessive ventilation shall not be performed, for 90 minutes on and 30 minutes off under this condition the rated d.c. voltage is applied continuously for 1000+48/-0 hours then left at no-load for 1hour, measured at this time the resistance value the change of the resistance value shall be within 5 % + 0.05 . there shall be no remarkable change in the appearance and the color code shall be legible after the test.
page-6 (11) temperature cycling test the temperature cycle shown in the following table shall be repeated 5 times consecutively. the measurement of the resistance value is done before the first cycle and after ending the fifth cycle, leaving in the room temperature for about 1 hour temperature cycling conditions: step temperature(c) time (minute) 1 -55 3 30 2 25 3 2 ~ 3 3 155 3 30 4 25 3 2 ~ 3 the change of the resistance value shall be within 1.0 % + 0.05 after the test the resistor shall be free from the electrical or mechanical damage. (12) resistance to soldering heat the terminal lead shall be dipped into the solder pot at 350 10 c for 3 0.5 seconds up to 2 ~ 2.5 mm. the change of the resistance value shall be within 1.0 % + 0.05 (13) overload flame retardant at 4 times of the rated voltage applied for 1 minute overload test voltage = value resistance ng power rati * 4 the resistor shall be able to no evidence of flaming arcing. 8. packing methods bandolier for axial leads style dimenions unit: mm normal miniature a a b1-b2 s(spacing) t (max. deviation of spacing) 52.4 1.0 1.0 knp-25 knp50s 6 0.5 26.0 1.0 1.0 5 knp-50 knp1ws 6 0.5 52.4 1.0 1.0 5 73.0 1.5 1.5 1 mm per 10 spacing knp100 KNP2WS 6 0.5 52.4 1.5 1.0 5 0.5 mm per 5 spacing knp200 knp300 knp400 knp3ws knp5ws 6 0.5 73.0 1.5 52.4 1.5 1.5 1.0 10 91.0 1.5 1.5 knp500 knp7ws 6 0.5 73.0 1.5 1.5 10
page-7 9. tape on reel packing style tape on reel normal miniature across flange ( a ) qty per reel knp-25 knp50s 72 5,000 knp-50 knp1ws 72 2,500 knp100 KNP2WS 95 2,000 knp200 knp3ws 95 1,000 knp300 knp400 knp5ws 95 1,000 knp500 knp7ws 95 250 10. tape on box packing style standard lead length short lead length qty per box normal miniature w ( a ) h ( b ) l ( c ) w ( a ) h ( b ) l ( c ) knp-25 knp50s 81 104 260 48 102 255 5,000 knp-50 knp1ws 73 45 258 1,000 knp100 KNP2WS 103 78 260 81 91 260 1,000 knp200 knp3ws 103 94 260 81 91 260 1,000 knp300 knp400 knp5ws 103 78 260 81 91 260 500 knp500 knp7ws 116 79 255 103 78 260 250
page-8 11. special type ( fo rming dimensions ) m type style dimensions unit mm normal miniature l d d p h knp-25 knp50s 6.3 0.5 2.4 0.2 0.6 0.05 10.0 1 10.0 1 knp-50 knp1ws 9.0 0.5 3.3 0.3 0.6 0.05 12.5 1 10.0 1 knp100 KNP2WS 11.5 1.0 4.5 0.5 0.8 0.05 15.0 1 12.5 1 knp200 knp3ws 15.5 1.0 5.0 0.5 0.8 0.05 20.0 1 15.0 1 knp300 knp400 knp5ws 17.5 1.0 6.5 0.5 0.8 0.05 25.0 1 15.0 1 knp500 knp7ws 24.5 1.0 8.0 0.5 0.8 0.05 30.0 1 15.0 1 mb type style dimensions unit mm normal miniature l d d p h 1 h 2 t knp-25 knp50s 6.3 0.5 2.4 0.2 0.6 0.05 10.0 1 6..0 1 5..0 1 1.2 0.2 knp-50 9.0 0.5 3.3 0.3 0.6 0.05 12.5 1 6.0 1 5..0 1 1.2 0.2 knp1ws 9.0 0.5 3.3 0.3 0.8 0.05 12.5 1 6.0 1 5..0 1 1.4 0.2 knp100 KNP2WS 11.5 1.0 4.5 0.5 0.8 0.05 15.0 1 6.0 1 5..0 1 1.4 0.2 knp200 knp3ws 15.5 1.0 5.0 0.5 0.8 0.05 20.0 1 10.0 1 5..0 1 1.4 0.2 knp500 knp7ws 24.5 1.0 8.0 0.5 0.8 0.05 30.0 1 15.0 1 5..0 1 1.4 0.2
page-9 f type style dimensions unit mm normal miniature l d d p h h max e max knp100 KNP2WS 11.5 1.0 4.5 0.5 0.8 0.05 6.0 1 5.0 1 20 3.5 knp200 knp3ws 15.5 1.0 5.0 0.5 0.8 0.05 6.0 1 5.0 1 25 3.5 fk type ffk type fkk type style dimensions unit mm normal miniature l d d p h h max e max knp100 KNP2WS 11.5 1.0 4.5 0.5 0.8 0.05 6.0 1 10.0 1 25 3.5 knp200 knp3ws 15.5 1.0 5.0 0.5 0.8 0.05 6.0 1 10.0 1 30 3.5 12. plant address a. taiwan hsin tien plant 1f, no.5, lane 560, chung cheng road, hsin tien taipei, taiwan, roc ( ?h? 560 5 ? 1 ) tel. 886-2-2218-2139 fax. 886-2-2218-2138 b. china dongguan plant 7-1, gaoli road, gaoli industrial zone tangxia zhen, dongguan, guangdong, china ( V|?|?BI^ 7-1 ? ) tel. 86-769-772 0275 fax. 86-769-772 0295
page-10 c. china mudu plant no.158, fengjiang road, no.1 building of nanbangind.zone, mu du new district, suzhou, china ( K?K?^?^ 158 ??II^ 1 ? ) tel. 86-512-66518889 fax. 86-512-66519889
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