radial metal film leaded resistors EU features • Lead frame construction • High density assembly and excellent self-standing strength • Marking: Blue body color with color dot marking for resistance and tolerance values • Products with lead-free terminations meet EU RoHS requirements. EU RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. dimensions and construction L Trimming Line D Ceramic Core L (max.) Type .197 (5.0) LF1/8 h LF1/4 t Resistive Electrode Film Cap Insulation Coating Lead Terminal .02 (0.5) .098 (2.5) .200±.008 (5.08±0.2) .300±.012 (7.62±0.3) .378 (9.6) LF1/2 H .100±.008 .236±.039 (2.54±0.2) (6.0±1.0) .295 (7.5) LF1/4L Marking Dimensions inches (mm) D (max.) P H LFF1/4 P RK26B2E t .200 (5.08) .010 (0.25) .217 (5.5) .012 (0.3) .118±.020 (3.0±0.5) .217±.020 (5.5±0.5) .200±.012 .197±.039 (5.08±0.3) (5.0±1.0) .100 (2.54) .285 (7.25) h (max.) ordering information - LF, LFF New Part # LF 1/4 C T Product Code LF LFF Power Rating 1/8: 0.125W 1/4: 0.25W 1/4L: 0.25W 1/2: 0.5W T.C.R. (ppm/°C) C: ±50 D: ±100 L: ±200 Termination Surface Material T: Sn T A Taping Packaging T: Taping (1/8W, 1/4W only) Blank: Bulk Ammo (1/8, 1/4 only) For 1/4L, only bulk type is available. 1000 D Nominal Resistance ±2%, ±5%: 2 significant figures + 1 multiplier “R” indicates decimal on value <10Ω ±0.5%, ±1%: 3 significant figures + 1 multiplier “R” indicates decimal on value <100Ω Resistance Tolerance D: ±0.5% F: ±1% G: ±2% J: ±5% ordering information - RK26 New Part # RK26 B 2E T Product Code RK26 T.C.R. (ppm/°C) B: ±350 Power Rating 2E: 0.25W Termination Material T: Sn T A Taping Packaging T: Taping Blank: Bulk Ammo F 1003 Nominal Resistance ±2%, ±5%: 2 significant figures + 1 multiplier “R” indicates decimal on value <10Ω ±0.5%, ±1%: 3 significant figures + 1 multiplier “R” indicates decimal on value <100Ω Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. Tolerance F: ±1% G: ±2% J: ±5% 1/30/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 109 resistors LF, LFF, RK26 resistors LF, LFF, RK26 radial metal film leaded resistors applications and ratings Part Designation T.C.R. (ppm/°C) Max. Power Rating D±0.5% F±1% E-96 E-24,E-96 G±2% E-24 J±5% E-24 Absolute Maximum Working Voltage 45.3 - 562k 4.7 - 1M 1 - 1M 1 - 1M 200V 400V 10 - 1M 10 - 1M 1 - 1M 1 - 1M 250V 500V Resistance Range (Ω) Absolute Maximum Overload Voltage Operating Rated Temperature Ambient Range Temperature C: ±50 LF1/8 D: ±100 0.125W L: ±200 C: ±50 LF1/4 LF1/4L 0.25W D: ±100 L: ±200 +70°C C: ±50 LF1/2 D: ±100 0.5W -55°C to +150°C 10 - 1M 10 - 1M 1 - 1M 1 - 1M 350V 700V — 10 - 100k 10 - 100k — 250V 500V — 100K - 22M 100K - 33M 100K - 33M 500V 700V L: ±200 LFF1/4 0.25W RK26B2E 0.25W C: ±50 D: ±100 B: ±350 -55°C to +155°C environmental applications Derating Curve 100 % Rated Power 80 60 LFF, RK26 40 LF 20 0 -60 -40 -20 -55 0 80 100 120 140 160 70 150 155 Ambient Temperature (°C) 20 40 60 Performance Characteristics Parameter Resistance T.C.R. Overload (Short Time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance @ 70°C Requirement ∆ R ±(% + 0.05Ω) Within specified tolerance Within specified T.C.R. LF, LFF: ±0.5%, RK26: ±1% LF: ±0.25%, LFF: ±0.5%, RK26: ±1% LF, LFF: ±0.5% RK26: ±1% LF: ±1%, LFF: ±2%, RK26: ±5% LF: ±1%, LFF: ±2%, RK26: ±5% Test Method 25°C Room temperature +100°C Rated voltage x 2.5 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 LF: -55°C (30 minutes)/+25°C (10 minutes), +150°C (30 minutes)/+25°C (10 minutes), 5 cycles; LFF, RK26: -55°C (30 minutes)/+25°C (10 minutes), +155°C (30 minutes)/+25°C (10 minutes), 5 cycles 40°C ±2°C, 90-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ±3°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 110 12/29/10 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com