general purpose metal film leaded resistor EU features • Semi-precision metal film resistors • The discharge path resistor is recognized by UL 1676 and c-UL (CAS-C22.2 No.1-M94). (File No. E159326) (RK only) • Meets requirements of MIL-R-22684 • Suitable for automatic machine insertion • MFS two times the power rating of the standard body type • Marking: Blue-gray body color with color-coded bands • Products with lead-free terminations meet EU RoHS and China RoHS requirements • AEC-Q200 Qualified: MF1/4, MFS1/4, MFS1/2 dimensions and construction L Trimming Line D l Ceramic Core Type L (ref.) Dimensions inches (mm) C (max.) D d (nom.) 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 80 100 120 140 160 70 155 Ambient Temperature (°C) 70 MFS1/2 60 MF1/2 MF1 MFS1/4 50 40 MFS1/4 .126±.008 (3.2±0.2) .133 (3.4) MF1/4 .248±.02 (6.3±0.5) .280 (7.1) .091±.012 (2.3±0.3) .024 (0.6) MFS1/2 .248±.02 (6.3±0.5) .280 (7.1) .091±.012 (2.3±0.3) .024 (0.6) MF1/2 .354±0.4 (9.0±1.0) .437 (11.1) .138±.016 (3.5±0.4) .024 (0.6) MF1 .610±.02 (15.5±0.5) .721 (18.3) .217±.02 (5.5±0.5) .031 (0.8) RK1/4 .248±.02 (6.3±0.5) .280 (7.1) .091±.012 (2.3±0.3) .024 (0.6) RK1/2 .374±.04 (9.5±1.0) .437 (11.1) .138±.016 (3.5±0.4) .024 (0.6) RK1 .610±.04 (15.5±1.0) .720 (18.3) .217±.02 (5.5±0.5) .031 (0.8) MF1/4 30 20 10 0 0 25 50 75 100 +.007 -.004 +0.2) -0.1 .066 (1.7 l* .018 (0.45) 1.10±.118 (28.0±3.0) 1.50±.118 (38.0±3.0) 0.94 min. (24.0 min.) 1.50±.118 (38.0±3.0) % Rated Power * Lead length changes depending on taping and forming. ordering information New Part # MF 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 applications and ratings C Termination Material C: SnCu T52 R Taping and Forming Packaging 1/4: T26, T52, VT, VTP, VTE, MT, M, U, M10, M12.5 1/2: T26, T52, VTP, VTE, M12.5, M15 1: T521 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 <100Ω Tolerance B: ±0.1% C: ±0.25% D: ±0.5% F: ±1% G: ±2% J: ±5% Minimum Absolute Absolute Resistance Range (Ω) Power 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 Voltage Voltage E-24 E-96 E-96 E-24 E-192 E-24 E-96 E-24 -55°C MFS1/4C C: ±50 49.9 to 0.25W 300V — — 10 - 1M — — 250V 300V 562k MFS1/4D D: ±100 +155°C Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/18/12 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 109 resistors MF, MFS, RK resistors MF, MFS, RK general purpose metal film leaded resistor applications and ratings (continued) Minimum Absolute Absolute Resistance Range (Ω) Power 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 Voltage Voltage E-24 E-96 E-24 E-96 E-24 E-192 E-24 E-96 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 MF1/2C MF1/2D 700V 0.50W MF1D 1W 700V MF1E C: ±50 D: ±100 RK1/4D RK1/4L 250V 500V — 350V 700V — 350V 700V 10 - 4.99M 10 - 5.05M 10 - 5.11M — — 1.0 - 10 0.51 - 10Ω 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 E: ±25 — — — 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 — — 0.25W RK1/2L 500V 0.50W 700V 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 -55°C to +155°C * Discharge path resistor environmental applications Performance Characteristics Parameter Resistance T.C.R. Requirement ∆ R ±(% + 0.05Ω) 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 70°C Resistance to Solvent Impulse No breakdown Not less than 10,000MΩ — — 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 25°C Room temperature, +100°C 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 260°C ± 5°C, 10 seconds ± 1 second or 350°C ± 10°C, 3.5 seconds ± 0.5 second 1 minute 100V, 1 minute -55°C (30 minutes), +155°C (30 minutes), 5 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 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. 110 2/01/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com