plate-shaped high precision metal film resistor EU features * Ultra precision T.C.R. up to 2.5 ppm/C, tolerance to 0.01% * Wide resistance range from 10 to 1M * Marking: Black body color with laser marking * Products with lead-free terminations meet EU RoHS and China RoHS requirements dimensions and construction D L Outer Coating Film Substrate Type L (max.) MRS1/8 .220 (5.6) MRS1/4 h MRS1/3 Solder Electrode Lead Frame .020 (0.5) H .295 (7.5) Dimensions inches (mm) D (max.) P H .100.008 (2.540.2) .098 (2.5) .200.008 (5.080.2) h (max.) .118.02 (3.00.5) .244 (6.2) .150.008 .315.079 (3.810.2) (8.02.0) .354 (9.0) .010.020 (0.250.5) P ordering information Lead Free MRS 1/3 Product Code Size 1/8: 0.125W 1/4: 0.25W 1/3: 0.3W Please contact factory for other available terminations S D 1002 T T.C.R. (ppm) S: 2.5 Y: 5 T: 10 E: 25 Terminal Surface Material D: SnAgCu Nominal Resistance 3 significant figures + 1 multiplier "R" indicates decimal on values <100 Resistance Tolerance T: 0.01% Q: 0.02% A: 0.05% B: 0.1% C: 0.25% D: 0.5% Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/19/11 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 129 resistors MRS MRS applications and ratings T.C.R. Power (ppm/C) T: .01% Rating Max. E96 Y: 5 -- 0.125W T: 10 -- E: 25 -- Y: 5 -- 0.25W T: 10 -- E: 25 -- S: 2.5 100-100k 0.3W Y: 5 100-100k T: 10 100-100k Type MRS1/8 MRS1/4 MRS1/3 Absolute Absolute Rated Operating Maximum Maximum Ambient Temperature Working Overload Temperature Range Voltage Voltage Resistance Range () Q: .02% A: .05% B: .1% C: .25% D: .5% E96 E24/E96 & 25, 50 *10n -- 100-250k 100-250k 100-250k 100-250k -- 100-250k 100-510k 30-510k 30-510k -- 100-250k 100-510k 10-510k 10-510k -- 100-510k 100-510k 100-510k 100-510k -- 100-510k 100-1M 30-1M 30-1M -- 100-510k 100-1M 10-1M 10-1M 30.1-100k 30.1-100k 30.1-100k -- -- 30.1-100k 10-100k 10-100k -- -- 30.1-100k 10-100k 10-100k -- -- 200V 400 250V +70C 500 -55C to +125C 200V * MRS1/3 is available only in E96 series. environmental applications Derating Curve Surface Temperature Rise 100 100 Temperature Rise (C) 80 % Rated Power resistors plate-shaped high precision metal film resistor 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 70 Ambient Temperature (C) 75 50 MRS1/8 25 0 100 120 140 125 MRS1/4 0 25 50 75 100 % Rated Power Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Soldering Heat Rapid Change of Temperature Dielectric Withstanding Voltage Endurance at 70C Requirement R (% + 0.05) Within specified tolerance Within specified T.C.R. 0.05% 0.1%: MRS1/8, 1/4 0.05%: MRS1/3 0.1%: MRS1/8, 1/4 0.05%: MRS1/3 0.5%: MRS1/8, 1/4 0.05%: MRS1/3 0.1%: MRS1/8, 1/4 0.05%: MRS1/3 Insulation Resistance 0.1%: MRS1/8, 1/4 0.05%: MRS1/3 10,000M and more Resistance to Solvent No abnormality in appearance. Marking shall be easily legible. Moisture Resistance Test Method 25C +25C/+65C Rated voltage x 2.5 or max. overload voltage whichever is lower, for 5 seconds 350C 10C, 3.5 seconds 0.5 second MRS1/8, 1/4: -55 +0-5C (30 minutes), +125 +3-0C (30 minutes), 5 cycles MRS1/3: -55 +0-5C (30 minutes), +125 +3-0C (30 minutes), 50 cycles 500V (a.c.) for 1 minute between terminals and coatings 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 40C 2C, 90 ~ 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 500V (d.c.) for 1 minute Soaking in 2-propanol of +20C~25C for 180 seconds 10 seconds Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 130 11/29/11 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com