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 Type L (ref.) Dimensions inches (mm) C (max.) D d (nom.) MFS1/4 +.02 .126 -.008 +0.5 (3.2 -0.2 ) .133 (3.4) .066 +.016 -.004 (1.7 +0.4 -0.1 ) .018 (0.45) MF1/4 .248.02 (6.30.5) .280 (7.1) .091.012 (2.30.3) .024 (0.6) MFS1/2 .248.02 (6.30.5) .280 (7.1) .091.012 (2.30.3) .024 (0.6) MF1/2C MF1/2D .354.04 (9.01.0) .437 (11.1) .138 +.016 -.02 +0.4) -0.5 .024 (0.6) MF1/2L .354.04 (9.01.0) .437 (11.1) .138.016 (3.50.4) .024/.031 (0.6)/(0.8) MF1 .610.02 (15.50.5) .721 (18.3) .217.02 (5.50.5) .031 (0.8) RK1/4 .248.02 (6.30.5) .280 (7.1) .091.012 (2.30.3) .024 (0.6) RK1/2 .374.04 (9.51.0) .437 (11.1) .138.016 (3.50.4) .024 (0.6) RK1 .610.04 (15.51.0) .720 (18.3) .217.02 (5.50.5) .031 (0.8) dimensions and construction L Trimming Line D l Ceramic Core d Marking Resistive Film End Cap Lead Wire Insulation Coating C Derating Curve Surface Temperature Rise Temperature Rise (C) 100 % Rated Power 80 60 40 20 0 -60 -40 -20 -55 0 20 40 60 80 100 120 140 70 Ambient Temperature (C) 160 155 70 MFS1/2 60 MF1/2 MF1 MFS1/4 50 40 MF1/4 30 20 10 0 0 25 50 75 100 % Rated Power Type MF MFS RK 1/4 Power Rating 1/4: 0.25W 1/2: 0.50W 1: 1W For further information on packaging, please refer to Appendix C. L T.C.R. E: 25 C: 50 D: 100 L: 200 G: 250 B: 350 1.10.118 (28.03.0) +.012 -.016 +3.0) (28.0 -4.0 1.10 1.10.118 (28.03.0) +.012 -.016 +3.0) (38.0 -5.0 1.50 0.94 min. (24.0 min.) 1.50.118 (38.03.0) * Lead length changes depending on taping and forming. ordering information MF (3.5 l* C T52 8 Termination Material C: SnCu Taping and Forming 1/4: T26, T52, VT, VTP, VTE, MT, M, U, M10, M12.5 1/2: T26, T52, VTP, VTE, M12.5, M15 1: T521 Lead Diameter MF1/2L: T52 & Bulk Only: 6: 0.6mm 8: 0.8mm Blank: All others sizes & packaging R Packaging A: Ammo R: Reel R20 J Nominal Resistance +2%: 2 significant figures + 1 multiplier +0.5%,+1%: 3 significant figures + 1 multiplier "R" indicates decimal on value <100 Tolerance B: 0.1% C: 0.25% D: 0.5% F: 1% G: 2% J: 5% applications and ratings 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 Voltage Voltage E-24 E-96 E-96 E-24 E-192 E-24 E-96 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. 11/27/18 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 163 leaded resistors * * * * * 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 Voltage Voltage E-24 E-96 E-96 E-24 E-192 E-24 E-96 E-24 MF1/4C C: 50 -- -- D: 100 -- -- L: 200 -- 10- 2.21M 10 - 2.21M -- -- -- 1.0 - 10 0.51 - 10 -- -- 10 - 1M 10 - 2.21M 10 - 2.2M C: 50 -- -- D: 100 -- -- MF1/2L L: 200 -- -- MF1C C: 50 47.5 - 1.0M 47.5 - 2.49M MF1/4D 500V 0.25W MF1/4L MFS1/2C MFS1/2D 0.50W 500V leaded resistors MF1/2C MF1/2D 700V 0.50W MF1D 1W 700V MF1E C: 50 D: 100 RK1/4D RK1/4L 0.25W 500V -- 350V 700V -- 350V 700V 10 - 4.99M 10 - 5.05M 10 - 5.11M -- 1.0 - 10 0.51 - 10 10 - 5.11M 1.0 - 6.81M -- -- 47.5 - 1.0M 47.5 - 2.49M 47.5 - 4.64M 47.5 - 5.11M -- -- 3.09M - 25M -- -- -- -- D: 100 -- -- -- L: 200 -- -- -- -- 3.3M - 33M 3.3M - 33M RK1/4B B: 350 -- -- -- 100k - 25M 100k - 33M 100k - 33M RK1/2D D: 100 -- -- -- 5.11M - 33M -- -- RK1/2L 500V 250V -- D: 100 E: 25 -- 700V 0.50W RK1/2B L: 200 -- -- -- -- 6.2M - 33M 6.2M - 33M B: 350 -- -- -- 100k - 35M 100k - 51M 100k - 51M 100k - 100M 100k - 100M RK1BC 1W 1000V B: 350 -- -- -- 100k - 51M RK1/2G* 0.50W 700V G: 250 -- -- -- -- -- 1M - 12M 350V 700V 500V 700V 700V 1000V 1000V 1500V 350V 700V -55C to +155C * Discharge path resistor environmental applications Performance Characteristics Parameter Resistance T.C.R. Requirement R (% + 0.05) Limit Typical Within specified -- tolerance Within specified -- T.C.R. Overload (Short Time) RK: 1%, RK1/2G: 2.5% RK: 0.6%, RK1/2G: 1% MF: 0.5% MF: 0.3% Resistance to Solder Heat RK: 1%; RK1/2G: 5%; RK: 0.5%; RK1/2G: 1% MFS: 0.75%; MF1/4, MFS1/4: 0.4%; MF1/4, MFS1/2, MF1/2: 0.5%, MFS1/2, MF1/2: 0.25% Dielectric Withstanding Voltage Insulation Resistance Rapid Change of Temperature Moisture Resistance Endurance at 70C Resistance to Solvent Impulse Not less than 10,000M No breakdown -- -- RK,MF: 1%; RK1/2G: 5% MF: 0.3%; RK: 0.5%, RK1/2G: 1% RK: 5%; RK1/2G: 10%; MFS1/4: 1.5%; MF1/4, MFS1/2, MF1/2: 1% RK: 5%; RK1/2G: 10%; MFS1/4: 1.5%; MF1/4, MFS1/2, MF1/2: 1% No abnormality in appearance. Marking shall be easily legible No such abnormalities as short-circuit, burnout, breakdown, etc. RK: 2%; RK1/2G: 5%; MFS1/4: 1%; MF1/4, MFS1/2, MF1/2: 0.75% RK: 2%; RK1/2G: 5%; MFS1/4: 1%; MF1/4, MFS1/2, MF1/2: 0.75% Test Method 25C Room temperature, +100C, RK: +25C/+125C Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is less; MFS1/2: Rated voltage x 2 or max. overload voltage for 5 seconds, whichever is less 260C 5C, 10 seconds 1 second or 350C 10C, 3.5 seconds 0.5 second 1 minute 100V, 1 minute -55C (30 minutes), +155C (30 minutes), 5 cycles 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle -- The resistor shall be immersed for 5 seconds in IPA -- Discharge from 1000pF capacitor 50 pulses. Internal 2.5 seconds. Charge voltage: 1.25kV (RK1/4), 2.5kV (RK1/2) and 6kV (RK1) Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 164 2/20/17 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com