insulated super miniature precision metal film resistor EU features •Super high precision resistors with a wide resistance range of 100Ω – 5.11MΩ respond to tolerance ±0.01% and T.C.R. ±5×10−6/K • Extremely stable resistors with less variation ±0.01%/year • Designated resistances (marking in 4-digit effective figures) of tolerances ±0.01% – ±0.25% are available •Marking: black body color and alphanumeric marking •Products meet EU RoHS requirements dimensions and construction Dimensions inches (mm) Type Lead Wire L D SF1/8 .413±.016 (10.5±0.4) .142±.016 (3.6±0.4) SF1/4 .630±.016 (16.0±0.4) .217±.020 (5.5±0.5) SF1/2 .787±.020 (20.0±0.5) .264±.020 (6.7±0.5) ød Outer Case Trimming Line Electrode Resin for Cap Sealing Ceramic Core L Resistive Film D d (Nominal) .026 (0.65) l 1.50±.118 (38±3) .031 (0.8) ordering information SF 1/8 Y C 1003 B Product Code Power Rating T.C.R. (×10-6/K) Terminal Surface Material Nominal Resistance Resistance Tolerance 1/8: 0.125W 1/4: 0.25W 1/2: 0.5W Y: ±5 T: ±10 C: SnCu 4 digits* T : ±0.01% Q: ±0.02% A: ±0.05% B: ±0.1% C: ±0.25% D: ±0.5% * It becomes a real number when a nominal resistance is 4 or more digits of significant figures. Contact us when you have control request for environmental hazardous material other than the substance specified by EU RoHS. ratings Type PowerT.C.R. -6 Rating (×10 /K) SF1/8YC 0.125W SF1/8TC SF1/4YC 0.25W SF1/4TC SF1/2YC 0.5W SF1/2TC Resistance Range (Ω) T:±0.01%Q:±0.02% A:±0.05% B:±0.1% C:±0.25% D:±0.5% E24, E96E24, E96E24, E96E24, E96E24, E96E24, E96 Y: ±5 100 - 200k 100 - 200k 100 - 200k 100 - 200k 100 - 200k 100 - 200k T: ±10 100 - 511k 100 - 511k 100 - 511k 100 - 511k Y: ±5 100 - 511k 100 - 511k 100 - 511k 100 - 511k 100 - 511k 100 - 511k T: ±10 100 - 1M 100 - 1M 100 - 1M 100 - 1M Y: ±5 100 - 1M 100 - 1M 100 - 1M 100 - 1M 100 - 1M 100 - 1M T: ±10 100 - 3.57M 100 - 5.11M 100 - 5.11M 100 - 5.11M Max. Max. Working Overload VoltageVoltage 250V 300V 350V 500V 600V 700V Rated Ambient Temperature: +70°C Operating Temperature Range: −25°C – +85°C Rated voltage = √Power Rating×Resistance value or Max. working voltage, whichever is lower. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/30/11 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 133 resistors SF resistors SF insulated super miniature precision metal film resistor environmental applications Derating Curve 100 % Rated Power 80 60 40 20 0 -40 -20 0 20 40 -25 60 80 70 100 85 Ambient Temperature (°C) For resistors operated at an ambient temperature of 70°C or above, a power rating shall be derated in accordance with the above derating curve. Performance Characteristics Performance Requirements Test Items ∆R±% Resistance Within specified tolerance Test Methods 25°C T.C.R. Within specified T.C.R. SF1/8 R≤200kΩ: +25°C/-15°C and +25°C/+65°C, R>200kΩ: +25°C/+65°C SF1/4 R≤511kΩ: +25°C/-15°C and +25°C/+65°C, R>511kΩ: +25°C/+65°C SF1/2 R≤1MΩ: +25°C/-15°C and +25°C/+65°C, R>1MΩ: +25°C/+65°C Overload (Short Time) 0.05 Rated voltage ×2.5 or Max. overload voltage whichever is lower, for 5s. Resistance to Soldering Heat 0.05 350°C ±10°C, 3s +0.5s/-0s or 260°C ±5°C, 10s±1s Rapid Change of Temperature 0.05 -25°C (30min.)/ +85°C (30min.), 5 cycles Moisture Resistance 0.240°C ±2°C, 90%–95%RH, 1000h 1.5h ON/0.5h OFF cycle Endurance at 70°C 0.2 70°C ±3°C, 1000h 1.5h ON/0.5h OFF cycle Variation Per Year Normal temperature and humidity for a year 0.01/Year Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 134 12/24/13 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com