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 r esle isad te Dimensions inches (mm) od dimensions and construction r Type L (ref.) C (max.) D d (nom.) l* s .126 +.02 .066 +.016 D Trimming Line L Ceramic Core l MFS1/4 (3.2 +-0.0.50)8 .(133.43) (1.7 +-0.0.40)4 (.00.1458) -0.2 -0.1 d .248±.02 .280 .091±.012 .024 1.10±.118 MF1/4 (6.3±0.5) (7.1) (2.3±0.3) (0.6) (28.0±3.0) .248±.02 .280 .091±.012 .024 MFS1/2 Marking Resistive End Lead (6.3±0.5) (7.1) (2.3±0.3) (0.6) Film Cap Wire Insulation Coating MF1/2C .354±.04 .437 .138 +-.0.0126 .024 1.10 +-..001126 C MF1/2D (9.0±1.0) (11.1) (3.5 +0.4) (0.6) (28.0 +3.0) -0.5 -4.0 .354±.04 .437 .138±.016 .024/.031 1.10±.118 Derating Curve Surface Temperature Rise MF1/2L (9.0±1.0) (11.1) (3.5±0.4) (0.6)/(0.8) (28.0±3.0) 100 70 MFS1/2 .610±.02 .721 .217±.04 .031 1.50 +-..001126 % Rated Power486000 mperature Rise (°C)5432600000 MMMMFFFF11S1// 124/ 4 RMKF11/4 (..(1236547..3845±±±±00...00.5524)) (..(1247883..1307)) ..01((5293..1853±±±±..1000..0311))26 ..((000022..8644)) (0(23.498..040 mm-+53.ii0.nn0)..) 20 Te10 RK1/2 (9.5±1.0) (11.1) (3.5±0.4) (0.6) 0 0 -60 -40 -20 0 20 40 60 80 100 120 140 160 0 25 50 75 100 .610±.04 .720 .217±.02 .031 1.50±.118 -55 70 155 RK1 Ambient Temperature % Rated Power (15.5±1.0) (18.3) (5.5±0.5) (0.8) (38.0±3.0) (°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% MFS 1/2: 0.50W C:±50 VTP, VTE, MT, & Bulk Only: R: Reel figures + 1 multiplier C:±0.25% RK 1: 1W D:±100 M, U, M10, 6: 0.6mm +0.5%,+1%: D:±0.5% M12.5 3 significant figures L: ±200 8: 0.8mm F: ±1% 1/2: T26, T52, + 1 multiplier Fpaocr kfuargtihnegr, ipnlfeoarmsea trieofne ro tno GB::±±235500 VMT1P2,. 5V, TME1, 5 Bo&tl hapenarkcs:k Asaiglzliensg “dRe”c iimndailc aotne sv alue GJ:: ±±25%% Appendix C. 1: T521 <100Ω applications and ratings Power Minimum Resistance Range (Ω) Absolute Absolute Operating Part Dielectric T.C.R. Maximum Maximum Rating Temperature Designation Withstanding (ppm/°C) (B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) (G±2.0%) (J±5.0%) Working Overload @ 70°C Range Voltage E-96 E-96 E-24 E-192 E-24 E-96 E-24 E-24 Voltage Voltage MFS1/4C C: ±50 -55°C 0.25W 300V — — 49.9 - 10 - 1M — — 250V 500V to MFS1/4D D: ±100 562k +155°C Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/19/19 144 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

MF, MFS, RK general purpose metal film leaded resistor applications and ratings (continued) Power Minimum Resistance Range (Ω) Absolute Absolute Operating Part Dielectric T.C.R. Maximum Maximum Rating Temperature Designation Withstanding (ppm/°C) (B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) (G±2.0%) (J±5.0%) Working Overload @ 70°C 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 MF1/4L L: ±200 — — — 1.0 - 10 0.51 - 10 MFS1/2C C: ±50 0.50W 500V — — 10 - 1M 10 - 2.21M 10 - 2.2M — 350V 700V MFS1/2D D: ±100 s MMFF11//22DC 0.50W 700V DC:: ±±15000 —— —— 10 - 5.05M 1100 -- 45..9119MM — — 350V 700V edtor ds MF1/2L L: ±200 — — — 1.0 - 10 0.51 - 10Ω easi -55°C le MF1C C: ±50 5.1 - 2.0M 5.1 - 2.49M to r 5.1 - 5.11M 1.0 - 6.81M — — +155°C MF1D 1W 700V D: ±100 — — 350V 700V MF1E E: ±25 5.1 - 2.0M 5.1 - 2.49M 5.1 - 4.64M 1.0 - 5.11M — — RK1/4D D: ±100 — — — 3.09M - 25M — — RK1/4L 0.25W 500V L: ±200 — — — — 3.3M - 33M 3.3M - 33M 500V 700V RK1/4B B: ±350 — — — 100k - 25M 100k - 33M 100k - 33M RK1/2D D: ±100 — — — 5.11M - 33M — — RK1/2L 0.50W 700V L: ±200 — — — — 6.2M - 33M 6.2M - 33M 700V 1000V RK1/2B B: ±350 — — — 100k - 35M 100k - 51M 100k - 51M RK1BC 1W 1000V B: ±350 — — — 100k - 51M 100k - 100M 100k - 100M 1000V 1500V RK1/2G* 0.50W 700V G: ±250 — — — — — 1M - 12M 350V 700V * Discharge path resistor environmental applications Performance Characteristics Requirement ∆R ±(% + 0.05Ω) Parameter Limit Typical Test Method Within specified Resistance — 25°C tolerance Within specified T.C.R. — Room temperature, +100°C, RK: +25°C/+125°C 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% 260°C ± 5°C, 10 seconds ± 1 second or Resistance to Solder Heat MFS: ±0.75%; MF1/4, MFS1/4: ±0.4%; MF1/4, MFS1/2, MF1/2: ±0.5%, MFS1/2, MF1/2: ±0.25% 350°C ± 10°C, 3.5 seconds ± 0.5 second Dielectric Withstanding Voltage No breakdown — 1 minute Insulation Resistance Not less than 10,000MΩ — 100V, 1 minute RK,MF: ±1%; MF: ±0.3%; RK: ±0.5%, Rapid Change of Temperature -55°C (30 minutes), +155°C (30 minutes), 5 cycles RK1/2G: ±5% RK1/2G: ±1% RK: ±5%; RK1/2G: ±10%; RK: ±2%; RK1/2G: ±5%; Moisture Resistance MFS1/4: ±1.5%; MF1/4, MFS1/4: ±1%; MF1/4, 40°C ± 2°C, 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 70°C MFS1/4: ±1.5%; MF1/4, MFS1/4: ±1%; MF1/4, 70°C ± 2°C, 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 Resistance to Solvent appearance. Marking — 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. Impulse as short-circuit, burnout, — breakdown, etc. 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. 12/19/19 145 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: K OA Speer: MF1/4CLT52R5761F MF1/2DLT52R2372F MF1DL2430F MF1/4CLT52R47R5F MF1/4DLT52R4422F MF1/2DLT52R1331F MF1/2CLT52R2802F MF1/2CLT52R2803F MF1/4ELT52R4273B MF1/4DLT52R1911F MF1/4CLT52R1742F MF1/4DLT52R3R48F MF1/4DL6R.49F MF1/4DLT52R1913F MF1/2DLT52R1333F MF1/4CLT52R47R0F MF1/4DLT52R1912F MFS1/4DLT52R2001F MF1/4DLT52R5R60F MFS1/4DLT52R2003F MFS1/4DLT52R2002F MF1/4DLT52R6811F MF1/4DLT52R27R0F MF1/2CLT52R3572F MFS1/4DLT52R2000F MF1/4DLT52R5R62F MF1/4DLT52R27R4F MF1/4DL1183F MF1/2CLT52R3651F MF1/4CLT52R5491F MF1/4CLT52R8062F MF1/4DLT52R2R49F MF1/4DL6R81F MF1/2CL2001F MF1/4CL2002F MF1/4DL2001F MF1/4EL2002F MF1/4DL2004F MF1/2CL2004F MF1/4CL2004F MF1/4DLT52R1302F MF1/4CLT52R8061F MF1/2DL2001F MF1/2CLT52R3162F MF1/4CL2001D MF1/4CLT52R8060F MF1/4DLT52R3831F MF1/2CLT52R1742F MF1/2CL2002F MF1/2CLT52R1822F MF1/2DL2002F MF1/2CLT52R1824F MF1/4CL2000F MF1/4DCT52R3R16F MF1/4DL2000F MF1/2CLT52R1821F MF1/2CL2000F MF1/4DL2002F MF1/2CLT52R1820F MF1/4CL2001F MFS1/4DLT52R5622F MF1/2CLT52R47R5F MF1/2DL2000F MF1/2DL2004F MF1/2DLT52R1912F MF1/4CLT52R1242F MF1/4DLT52R1334F MF1/2CLT52R4750F MF1/2DLT52R1821F MF1/2DLT52R33R2F MF1/2DLT52R3323F MF1/2DLT52R3321F MF1/4DLT52R3740F MF1/2DLT52R1823F MF1/4DL1874F MF1/4DLT52R2260F MF1/4CLT52R2803F MF1/4DLT52R2262F MF1/4DLT52R3742F MF1/4CLT52R4222F MF1/2CLT52R8662F MF1/4DLT52R1330F MF1/4DLT52R2264F MF1/2DLT52R3241F MF1/2CLT52R1693F MF1/2DLT52R3322F MF1/4DLT52R2263F MF1/4DLT52R3741F MF1/4DLT52R3743F MF1/4DLT52R3902F MF1/2CLT52R1692F MF1/4CLT52R1243F MF1/2DLT52R1822F MF1/2DLT52R1824F MF1/2DLT52R3320F MF1/4DL1021F MF1/4DL2050F MF1/4DL1304F MF1/4CLT52R1103F MF1/4DLT52R3090F