MF, MFS, RK - KOA Speer

1 MFMFSRK featuresMF, MFS, RKgeneral purpose metal film leaded resistordimensions and constructionCeramic CoredDMarkingResistiveFilmInsulation CoatingTrimming LineEndCapLeadWireLlCL (ref.)MF1 .02( ).280( ).091 .012( ).024( ) .118( ).024( ).138 .016( ).437( ).354 .04( ).138 .016( ).437( ).354 .04( )MF1/2 CMF1 ( )/( )MF1/2 LTypeC (max.) D d (nom.) l*Dimensions inches (mm)1/4:T26, T52, VT, VTP, VTE, MT, M, U, M10, : T26, T52, VTP, VTE, , M151: T521ordering information+2%: 2 significantfigures + 1 multiplier+ ,+1%: 3 significant figures+ 1 multiplier R indicates decimal on value<100 1/4: : : 1WC:SnCuB: : : : 1%G: 2%J: 5%MF1/4 CTerminationMaterialMF1/2L: T52& Bulk Only:6: : : Allothers sizes& packaging8 LeadDiameterTypePowerRatingNominalResist anceToleranceTaping andFormingT52R20A: AmmoR.

2 ReelPackagingRJFor further information onpackaging, please refer toAppendix : 25C: 50D: 100L: 200G: 250B: .008( ).133( ).018( ).024( ).091 .012( ).280( ).248 .02( )MFS1 +. ( + ) ( ) .118( ) .118( ).217 .02( ).721( ).610 .02( ) MF1 EURK1 .02( ).280( ).091 .012( ).024( ).024( ).138 .016( ).437( ).374 .04( )RK1 ( ).217 .02( ).720( ).610 .04( ) min.( min.)AbsoluteMaximumOverloadVoltageAbsol uteMaximumWorkingVoltagePartDesignationP owerRating@ 70 Capplications and (ppm/ C)Resistance Range ( )(B )E-96(C )E-96(D )E-24 E-192(F )E-24 E-96 OperatingTemperatureRange(G )E-24(J )E-24 MFS1/4C MFS1 -562k10 - 1MD: 100C.

3 50300V 250V 500V-55 Cto+155 CDerating Curve% Rated Power10080604020-60 -4004060 80 1001607020 Ambient Temperature( C)0-55120155-20140 Surface Temperature RiseTemperature Rise ( C)70504030200255075% Rated Power01001060 MFS1/2MF1/2 MF1/4 MFS1/4MF1 * Lead length changes depending on taping and Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

4 8/08/18resistors 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, MFS1/2170 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 given herein may be changed at any time without prior notice.

5 Please confirm technical specifications before you order and/or use. 2/20/17resistorsMF, MFS, RKgeneral purpose metal film leaded resistorPerformance Characteristicsenvironmental applications AbsoluteMaximumOverloadVoltageAbsoluteMa ximumWorkingVoltagePartDesignationPowerR ating@ 70 Capplications and ratings (continued)MinimumDielectricWithstanding Voltage MF1/4C MF1/4D MF1/2D MF1/2C MF1D MF1C 10- - - - - - - - - - - - - D: 100C: 50C: 50D: 100E: 25C: 50D.

6 (ppm/ C)Resistance Range ( )(B )E-96(C )E-96(D )E-24 E-192 (F )E-24 E-96 OperatingTemperatureRange-55 Cto+155 C (G )E-24 (J )E-24 MF1 - 10L: - 10 MF1/2L - 10L: - 10 350V 700V700V MFS1/2D MFS1/2C10 - 1M 10 - C: 50D: 700V10 - RK1 - 33M L: 200L: 200D: 100 - 33M - 33M RK1/4D - 25MD: 100 700V 500V 500V - 33M - 33M RK1/4L 100k - 25M B: 350100k - 33M 100k - 33M RK1/4B RK1/2L RK1BC1W 100k - 51M G: 250B: 350100k - 100M100k - 100M1000V 700V700V 1M - 12M 100k - 35M B: 350100k - 51M 100k - 51M RK1/2B RK1/2G** Discharge path resistorParameterRequirement R (% + ) LimitTypicalTest Method Resistance 25 C Room temperature, +100 C, RK: +25 C/+125 CWithin specifiedtoleranceWithin Overload (Short Time) Rated voltage x or max.

7 Overload voltage for 5 seconds, whichever is less; MFS1/2: Rated voltage x 2 or max. overload voltage for 5 seconds, whichever is lessRK: 1%, RK1/2G: : : , RK1/2G: 1%MF: Resistance to Solder Heat 260 C 5 C, 10 seconds 1 second or 350 C 10 C, seconds secondRK: 1%; RK1/2G: 5%;MFS: ; MF1/4,MFS1/2, MF1/2: ,RK: ; RK1/2G: 1%MFS1/4: ; MF1/4,MFS1/2, MF1/2: Dielectric Withstanding Voltage 1 minuteNo breakdown Insulation Resistance 100V, 1 minuteNot less than 10,000M Rapid Change of Temperature -55 C (30 minutes), +155 C (30 minutes), 5 cyclesRK,MF: 1%; RK1/2G: 5%MF: ; RK: ,RK1/2G: 1% Moisture Resistance 40 C 2 C, 90 - 95% RH, 1000 hours, hr ON, hr OFF cycleRK: 5%; RK1/2G: 10%;MFS1/4: ; MF1/4,MFS1/2, MF1/2: 1%RK: 2%; RK1/2G: 5%;MFS1/4: 1%.

8 MF1/4,MFS1/2, MF1/2: Endurance at 70 C 70 C 2 C, 1000 hours, hr ON, hr OFF cycleRK: 5%; RK1/2G: 10%;MFS1/4: ; MF1/4,MFS1/2, MF1/2: 1%RK: 2%; RK1/2G: 5%;MFS1/4: 1%; MF1/4,MFS1/2, MF1/2: Resistance to Solvent The resistor shall be immersed for 5 seconds in IPANo abnormality in appearance. Marking shall be easily legible Impulse Discharge from 1000pF capacitor 50 pulses. Internal seconds. Charge voltage: (RK1/4), (RK1/2) and 6kV (RK1)No such abnormalities as short-circuit, burnout,breakdown, etc.

9