design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors e 1 r 2 q 3 4 2 5 a 6 b 7 j 8 1 9 0 10 1 11 product code power rating at 70 c amb. 1412 0.25 w 0.5 w special feature a z standard less than 2 resistance tolerance j 5 % resistance value the ?rst two digits are signi?cant ?gures of resistance and the third one denotes number of zeros following.decimal point is expressed by r as 2.2=2r2. suf?x for packaging and/or cut & formed leads nil p ps e we std.bulk packing p type cut & formed ps type cut & formed radial taped & box radial taped & box 12 metal filmfusing resistors 12 1 w2 w ab z standard less than 2 construction features accurate fusing small size and lightweight uniform quality, consistent per for mance and reliability flame retardant, utilizing exclusive silicon insulation material reference standard eiaj rc-2125 rohs compliant metal film fusing resistors type: erqa erqz (0.25 w, 0.5 w, 1 w, 2 w coating type ) metal alloy ? lm spiraling turns ceramic core end cap lead wire insulative lacquer marking the above example shows a standard metal film fusing resistors, 2 w pow er rat ing, resistance val ue of 100 , tolerance of 5 %, and pack age of stan dard bulk pack ing. explanation of part numbers sep. 2014 02 downloaded from: http:///
design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors 120 100 80 60 40 20 0 ?60 ?40 ?20 0 20 40 60 80 100 120 140 160 180 200 220 ambient temperature (c) rated load (%) ?30 c 70 c 150 c 130 c erq14erq12 erq1erq2 part no. power rating at 70c (w) maximum open circuit voltage (1) (v) maximum overload voltage dielectric with- standing voltage (v) resistance tol er ance (%) resistance range ( ) t.c.r. ( 10 -6 /c) standard resistance values marking method on body mass (weight) [g/pc.] min. max. erq14z 0.25 200 3 times of rated voltage (2) ac 350 j ( 5) 1.0 1.8 350 e24 color code 0.24 erq14a 2.0 470 erq12z 0.5 250 ac 350 j ( 5) 1.0 1.8 350 e24 stamp 0.32 erq12a 2.0 560 color code erq1z 1 250 ac 600 j ( 5) 1.0 1.8 350 e24 stamp 0.64 erq1ab 2.0 560 erq2z 2 250 ac 1000 j ( 5) 1.0 1.8 350 e24 stamp 1.54 erq2ab 2.0 560 (1) maximum open circuit voltage: referring to the maximum value of the voltage applied between terminals of the resistor when the resistor is opened in an electric circuit 1000 times power rating or voltage specified above whichever less is regarded as the maximum open circuit voltage. (2) rated continuous working voltage (rcwv) shall be determined from rcwv= power rating resistance value ratings power derating curve for resistors operated in ambient temperatures above 70 c, power rating shall be derated in accordance with the figure on the right. characteristics speci? cations test methods fusing characteristics rated power res. value ( ) limit 0.25 w 0.5 w 1 to 1.8 open within 30 seconds at 30 times the rated power 1 w2 w open within 30 seconds at 25 times the rated power 0.25 w 0.5 w 1 w2 w 2 to 9.1 open within 30 seconds at 16 times the rated power 0.25 w 10 to 470 open within 30 seconds at 12 times the rated power 0.5 w 1 w2 w 10 to 560 the test potential shall be preadjusted using a dummy re sis tor and then be subjected to the test specimens. the potential shall be readjusted within two seconds to reach the exact value of specified current. this test shall be made under the conditions at 20 c and 65 % rh (or at a temperature of 5 c to 35 c and 45 to 85 % rh, only when any doubt may not be caused), and the use of sta bi lized pow er source is sug gest ed. fus ing time shall be mea sured as the duration un til the circuit cur rent is de creased to a 1/50 the initial test current or less. performance spec i ca tions sep. 2014 02 downloaded from: http:///
design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors l f d f d ll 3 max. s l f 0.650.05 f d 0.8 1.20.2 4.01.0 h 3.5 max. s l f 0.800.05 f d 1.0 1.40.2 4.01.5 h 1st signi?cant ?gure multipier resistance tolerance white colorshows fuse resistor 2nd signi?cant ?gure q 105 1w 100 j 71 1 q shows fuse resistor symbol power rating manufacturingseries no. date code (year, month, week) resistance value and tolerance erq aj p erq zj p erq abjp s erq zjp s part no. dimensions (mm) l 0 d 0 d erq14 6.3 +1.5 2.3 0.5 30.0 3.0 0.65 0.05 erq12 9.0 +1.5 2.8 0.5 30.0 3.0 0.65 0.05 erq1 12.0 +1.5 4.0 1.0 30.0 3.0 0.80 0.05 erq2 15.0 1.5 5.5 1.0 38.0 3.0 0.80 0.05 ?1.0?1.0 ?1.0 part no. power rating at 70 c (w) standard q?ty/packing (pcs.) dimensions (mm) l 0 ds h erq14 j p 0.25 2,000 6.3 +1.5 2.3 0.5 10.0 1.5 4.0 1.5 erq12 j p 0.5 2,000 9.0 +1.5 2.8 0.5 12.5 1.5 4.0 1.5 ?1.0?1.0 part no. power rating at 70 c (w) standard q?ty/packing (pcs.) dimensions (mm) l 0 ds h erq1 jp s 1 1,000 12.0 +1.5 4.0 1.0 15.0 1.5 6.0 1.5 erq2 jp s 2 1,000 15.0 1.5 5.5 1.0 20.0 2.0 6.5 1.5 ?1.0 type erq14, erq12 (0.25 w, 0.5 w) type erq1, erq2 (1w, 2w) dimensions in mm (not to scale) explanation of marking cut & formed type sep. 2014 02 downloaded from: http:///
design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors p 0 f d 0 f d w h 1 p 1 f pp 2 d a insulatedlead w 1 h 0 a b c marking p 1 p a b f p 2 h 1 h 0 w 1 w f d f d p 0 f d 0 erq aj e erq zj e (14a/14z, 12a/12z, 1ab/1z) radial tape packaging methods erq a/zjw e (14a/14z, 12a/12z, 1ab/1z) dimensions (mm) dimensions (mm) dimensions (mm) dimensions (mm) dimensions (mm) p 12.71.0 w 18.00.5 h 1 14a/14z 12 max. a 14a/14z 6.35 +0.65 d 14a/14z 2.30.5 p 0 12.70.3 w 1 9.00.5 12a/12z 15.5 max. 12a/12z 9.0 +1.5 12a/12z 2.80.5 p 1 3.850.70 1ab/1z 19 max. 1ab/1z 12.0 +1.5 1ab/1z 4.01.0 p 2 6.351.00 h 0 16.00.5 0 d 0.650.05 f 5.00.8 0 d 0 4.00.2 ?0.35 ?1.0 ?1.0 part number dimensions (mm) standard quantity (pcs./box) abc erq14aj e erq14zj e 46 130 335 2,000 pcs./box erq12aj e erq12zj e 46 130 335 2,000 pcs./box erq1abj e erq1zj e 49 100 335 1,000 pcs./box dimensions (mm) dimensions (mm) p 14a/14z 12.71.0 h 1 14a/14z 6.5 +0.6 12a/12z, 1ab/1z 30.01.0 12a/12z 6.5 +1.0 p 0 14a/14z 12.70.3 1ab/1z 6.5 +1.0 12a/12z, 1ab/1z 15.00.3 0 d 0 4.00.2 p 1 14a/14z 6.351.00 a 14a/14z 6.35 +0.65 12a/12z, 1ab/1z 7.51.0 12a/12z 9.0 +1.5 p 2 14a/14z 3.850.70 1ab/1z 12.0 +1.5 12a/12z, 1ab/1z 3.750.50 b 14a/14z 11.2 max. f 14a/14z 5.0 +0.6 12a/12z 14 max. 12a/12z, 1ab/1z 7.5 +0.6 1ab/1z 17 max. w 18.00.5 0 d 14a/14z 2.3 +0.5 w 1 9.00.5 12a/12z 2.80.5 h 0 14a/14z 16.00.5 1ab/1z 4.01.0 12a/12z 18.01.0 0 d 14a/14z 0.650.05 1ab/1z 18.01.0 12a/12z, 1ab/1z 0.800.05 0 ?0.35 ?1.0 ?1.0 ?0.3 ?0.2?0.2 00 for panasert au to mat ic insertion machine radial taped & box for panasert au to mat ic insertion machine radial taped & box sep. 2014 02 downloaded from: http:///
design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors measuring point 600 500 400 300 200 100 0 0123456789101112 14a 12a 1ab 2ab multiple of the power rating temperature rise t (k) 2.0 to 9.1 ( ) 10 to 560 ( ) erq12a 200 100 50 30 10 5 1 0 791 21 62 0 2 5 3 0 fusing time (s) multiple of the power rating 2.0 to 9.1 ( ) 10 to 470 ( ) erq14a 200 100 50 30 10 5 1 0 791 21 62 0 2 5 3 0 multiple of the power rating fusing time (s) 2.0 to 9.1 ( ) 10 to 560 ( ) erq1ab 200 100 50 30 10 5 1 0 791 21 62 0 2 5 3 0 multiple of the power rating fusing time (s) 2.0 to 9.1 ( ) 10 to 560 ( ) erq2ab 200 100 50 30 10 5 1 0 791 21 62 0 2 5 3 0 multiple of the power rating fusing time (s) this data is for reference only, specifications should be verified in written form with the engineering division. fusing characteristics (constant voltage cir cuit) hot spot temperature (for reference) sep. 2014 02 downloaded from: http:///
design and specifications are each subject to change without notice. ask factory for the current technical specifications before purchase and/or use. should a safety concern arise regarding this product, please be sure to contact us immediately. metal film fusing resistors t pp (vp) safety precautions p p : pulse limit power (w) v p : pulse limit voltage (v) : pulse continuous time (s) t : period (s) v r : rated voltage (v) p : rated power (w) r : resistance value ( ) v p max. : max. pulse limit voltage (v) part no. k v p max. (v) erq14a 0.6 200 erq12a 0.6 250 erq1ab 0.6 250 erq2ab 0.4 250 withstand pulse limit power is calculated by the next meth od. p p = k p t/ v p = k p r t/ reference to the right about a fixed number of v p max. t>1(s) t=1(s) t/ >100 t/ =100 p p safety precautions (common precautions for fixed resistors) ? when using our products, no matter what sort of equipment they might be used for, be sure to make a written agreement on the specifications with us in advance. the design and specifications in this catalog are subject to change without prior notice. ? do not use the products beyond the specifications described in this catalog. ? this catalog explains the quality and performance of the products as individual components. before use, check and evaluate their operations when installed in your products. ? install the following systems for a failsafe design to ensure safety if these products are to be used in equip ment where a defect in these products may cause the loss of human life or other significant dam age, such as damage to vehicles (automobile, train, vessel), traffic lights, medical equipment, aerospace equipment, electric heating appliances, combustion/gas equipment, rotating equipment, and disaster/crime prevention equipment. ? systems equipped with a protection circuit and a protection device ? systems equipped with a redundant circuit or other system to prevent an unsafe status in the event of a sin gle fault (1) precautions for use ? these products are designed and manufactured for general and standard use in general elec tron ic equipment (e.g. av equipment, home electric appliances, office equipment, information and communication equipment) ? these products are not intended for use in the following special conditions. before using the products, carefully check the effects on their quality and performance, and determine whether or not they can be used. 1. in liquid, such as water, oil, chemicals, or organic solvent 2. in direct sunlight, outdoors, or in dust 3. in salty air or air with a high concentration of corrosive gas, such as cl 2 , h 2 s, nh 3 , so 2 , or no 2 4. electric static discharge (esd) environment these components are sensitive to static electricity and can be damaged under static shock (esd). please take measures to avoid any of these environments. smaller components are more sensitive to esd environment. 5. electromagnetic environment avoid any environment where strong electromagnetic waves exist. 6. in an environment where these products cause dew condensation 7. sealing or coating of these products or a printed circuit board on which these products are mounted, with resin or other materials ? these products generate joule heat when energized. carefully position these products so that their heat will not affect the other components. ? carefully position these products so that their temperatures will not exceed the category temperature range due to the effects of neighboring heat-generating components. do not mount or place heat-generating components or inflammables, such as vinyl-coated wires, near these products. ? note that non-cleaning solder, halogen-based highly active flux, or water-soluble flux may deteriorate the performance or reliability of the products. ? carefully select a flux cleaning agent for use after soldering. an unsuitable agent may deteriorate the performance or reliability. in particular, when using water or a water-soluble cleaning agent, be careful not to leave water residues. otherwise, the insulation performance may be deteriorated. (2) precautions for storage the performance of these products, including the solderability, is guaranteed for a year from the date of ar riv al at your company, provided that they remain packed as they were when delivered and stored at a tem per a ture of 5 c to 35 c and a relative humidity of 45 % to 85 %. even within the above guarantee periods, do not store these products in the following conditions. otherwise, their electrical performance and/or solderability may be deteriorated, and the packaging materials (e.g. taping materials) may be deformed or deteriorated, resulting in mounting failures. 1. in salty air or in air with a high concentration of corrosive gas, such as cl 2 , h 2 s, nh 3 , so 2 , or no 2 2. in direct sunlight package markings include the product number, quantity, and country of origin. in principle, the country of origin should be indicated in english. sep. 2014 01 downloaded from: http:///
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