MF, MFS, RK general purpose metal film leaded resistor EU features Semi-precision metal film resistors Meets requirements of MIL-R-22684 Suitable for automatic machine insertion MFS two times the power rating of the standard body type Products with lead-free terminations meet EU RoHS and China RoHS requirements AEC-Q200 Qualified: MF1/4, MFS1/4, MFS1/2 dimensions and construction Dimensions inches (mm) Type L (ref.) C (max.) D d (nom.) l* L l +.007 D Trimming Line Ceramic Core .066 -.004 .126.008 .133 .018 MFS1/4 d +0.2 (3.20.2) (3.4) (0.45) (1.7 ) -0.1 .248.02 .280 .091.012 .024 MF1/4 (6.30.5) (7.1) (2.30.3) (0.6) Marking Resistive End Lead 1.10.118 .248.02 .280 .091.012 .024 Film Cap Wire MFS1/2 (28.03.0) (6.30.5) (7.1) (2.30.3) (0.6) Insulation Coating C MF1/2C .354.04 .437 .138.016 .024 MF1/2D (9.01.0) (11.1) (3.50.4) (0.6) .024/.031 .354.04 .437 .138.016 MF1/2L Derating Curve Surface Temperature Rise (0.6)/(0.8) (9.01.0) (11.1) (3.50.4) MFS1/2 100 70 .610.02 .721 .217.02 .031 1.50.118 MF1 60 MF1/2 (15.50.5) (18.3) (5.50.5) (0.8) (38.03.0) 80 MF1 50 MFS1/4 .248.02 .280 .091.012 .024 60 40 RK1/4 MF1/4 (6.30.5) (7.1) (2.30.3) (0.6) 30 0.94 min. 40 (24.0 min.) 20 .374.04 .437 .138.016 .024 RK1/2 20 (9.51.0) (11.1) (3.50.4) (0.6) 10 0 0 .610.04 .720 .217.02 .031 1.50.118 -60 -40 -200420060 80 100 120 140 160 025 50 75 100 RK1 -55 70 155 (15.51.0) (18.3) (5.50.5) (0.8) (38.03.0) Ambient Temperature % Rated Power (C) * Lead length changes depending on taping and forming. ordering information MF 1/4 L C T52 8 R R20 J Power Termination Taping and Lead Nominal Type T.C.R. Packaging Tolerance Rating Material Forming Diameter Resistance MF 1/4: 0.25W E: 25 C: SnCu 1/4: T26, T52, VT, MF1/2L: T52 A: Ammo +2%: 2 significant B: 0.1% VTP, VTE, MT, figures + 1 multiplier MFS 1/2: 0.50W C: 50 & Bulk Only: R: Reel C: 0.25% M, U, M10, +0.5%,+1%: RK 1: 1W D: 100 6: 0.6mm D: 0.5% M12.5 3 significant figures L: 200 8: 0.8mm F: 1% 1/2: T26, T52, + 1 multiplier G:250 Blank: All G:2% VTP, VTE, R indicates For further information on others sizes B: 350 M12.5, M15 J: 5% decimal on value packaging, please refer to & packaging 1: T521 <100 Appendix C. applications and ratings Minimum Absolute Absolute Resistance Range ( ) Power Operating Part Dielectric T.C.R. Maximum Maximum Rating Temperature Designation Withstanding (ppm/C) Working Overload (B0.1%) (C0.25%) (D0.5%) (F1.0%) (G2.0%) (J5.0%) 70C Range Voltage Voltage Voltage E-96 E-96 E-24 E-192 E-24 E-96 E-24 E-24 -55C MFS1/4C C: 50 49.9 - to 0.25W 300V 10 - 1M 250V 500V 562k MFS1/4D D: 100 +155C Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 8/08/18 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 169 % Rated Power Temperature Rise (C) resistorsresistors MF, MFS, RK general purpose metal film leaded resistor applications and ratings (continued) Minimum Absolute Absolute Resistance Range ( ) Power Operating Part Dielectric T.C.R. Maximum Maximum Rating Temperature Designation Withstanding (ppm/C) (B0.1%) (C0.25%) (D0.5%) (F1.0%) (G2.0%) (J5.0%) Working Overload 70C Range Voltage E-96 E-96 E-24 E-192 E-24 E-96 E-24 E-24 Voltage Voltage MF1/4C C: 50 10- 2.21M 10 - 2.21M MF1/4D 0.25W 500V D: 100 250V 500V 1.0 - 10 0.51 - 10 MF1/4L L: 200 MFS1/2C C: 50 10 - 1M 10 - 2.21M 10 - 2.2M 0.50W 500V 350V 700V MFS1/2D D: 100 10 - 4.99M MF1/2C C: 50 10 - 5.05M 10 - 5.11M MF1/2D 0.50W 700V D: 100 350V 700V 1.0 - 10 0.51 - 10 MF1/2L L: 200 -55C 47.5 - 1.0M 47.5 - 2.49M MF1C C: 50 to 10 - 5.11M 1.0 - 6.81M +155C MF1D 1W 700V D: 100 350V 700V 47.5 - 1.0M 47.5 - 2.49M 47.5 - 4.64M 47.5 - 5.11M MF1E E: 25 3.09M - 25M RK1/4D D: 100 RK1/4L 0.25W 500V L: 200 3.3M - 33M 3.3M - 33M 500V 700V 100k - 25M RK1/4B B: 350 100k - 33M 100k - 33M 5.11M - 33M RK1/2D D: 100 RK1/2L 0.50W 700V L: 200 6.2M - 33M 6.2M - 33M 700V 1000V 100k - 35M 100k - 51M 100k - 51M RK1/2B B: 350 100k - 100M 100k - 100M 100k - 51M RK1BC 1W 1000V B: 350 1000V 1500V RK1/2G* 0.50W 700V G: 250 1M - 12M 350V 700V * Discharge path resistor environmental applications Performance Characteristics Requirement R (% + 0.05 ) Parameter Limit Typical Test Method Within specified Resistance 25C tolerance Within specified T.C.R. Room temperature, +100C, RK: +25C/+125C T.C.R. RK: 1%, RK1/2G: 2.5% RK: 0.6%, RK1/2G: 1% Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is less Overload (Short Time) MF: 0.5% MF: 0.3% MFS1/2: Rated voltage x 2 or max. overload voltage for 5 seconds, whichever is less RK: 1% RK1/2G: 5% RK: 0.5% RK1/2G: 1% 260C 5C, 10 seconds 1 second or MFS: 0.75% MF1/4, MFS1/4: 0.4% MF1/4, Resistance to Solder Heat 350C 10C, 3.5 seconds 0.5 second MFS1/2, MF1/2: 0.5%, MFS1/2, MF1/2: 0.25% Dielectric Withstanding Voltage No breakdown 1 minute Not less than 10,000M Insulation Resistance 100V, 1 minute RK,MF: 1% MF: 0.3% RK: 0.5%, Rapid Change of Temperature -55C (30 minutes), +155C (30 minutes), 5 cycles RK1/2G: 5% RK1/2G: 1% RK: 5% RK1/2G: 10% RK: 2% RK1/2G: 5% MFS1/4: 1.5% MF1/4, MFS1/4: 1% MF1/4, Moisture Resistance 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle MFS1/2, MF1/2: 1% MFS1/2, MF1/2: 0.75% RK: 5% RK1/2G: 10% RK: 2% RK1/2G: 5% Endurance at 70C MFS1/4: 1.5% MF1/4, MFS1/4: 1% MF1/4, 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle MFS1/2, MF1/2: 1% MFS1/2, MF1/2: 0.75% No abnormality in appearance. Marking Resistance to Solvent The resistor shall be immersed for 5 seconds in IPA shall be easily legible No such abnormalities Discharge from 1000pF capacitor 50 pulses. Internal 2.5 seconds. as short-circuit, burnout, Impulse Charge voltage: 1.25kV (RK1/4), 2.5kV (RK1/2) and 6kV (RK1) breakdown, etc. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 2/20/17 170 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com