Data sheet E 2/4.936 - 10499 CNS 020 021 high precision resistors The models CNS 020 and CNS 021 resistors incorporate an ultrastable thin film element into the RCK02 form factor thereby extending the existing range capability. CNS 020 8,1 8,1 2,54 max. 6,62 max. 0,508 3,17 min. 0,254 0,508 5,08 Thin film products 2,54 max. 6,62 max. 3,17 min. 4 ELECTRICAL DIAGRAM CNS 021 0,254 3,81 Dimensions in mm SPECIFICATIONS PERFORMANCE MECHANICAL .. SUBSTRATE... RESISTIVE ELEMENT... TERMINAL LEADS... PROTECTION... REQUIREMENTS alumina passivated nichrome Sn Pb on Cu alloy epoxy coating ELECTRICAL... OHMIC VALUE RANGE... 100 kΩ... 10 MΩ (lower on request) RESISTANCE TOLERANCE... ± 0,01 % tightest ± 1% looset TEMPERATURE COEFFICIENT ... OF RESISTANCE... ± 10 ppm/°C standard (–55°C, +125°C) ± 5 ppm/°C on request (0°C, +70°C) POWER RATING... 0,25 W at +70°C 0,125 W at +125°C derating 0 W at +155°C MAXIMUM WORKING VOLTAGE... 300 V (higher on request) CLIMATIC ... OPERATING TEMPERATURE... RANGE... –55°C +155°C CONDITIONS OVERLOAD 2,5 Un / 5 s U max. < 2 Un ± 0,01 % ± 0,05 % 0,01 % –55°C/+155°C 5 cycles CEI 68-2-14 Test Na ± 0,01 % ± 0,05 % 0,01 % TERMINAL STRENGTH CEI 68-2-21 Test Ua (pulling) Ub (bending) Uc (twisting) ± 0,01 % ± 0,02 % 0,01 % RESISTANCE TO SOLDER HEAT +260°C / 10 s CEI 68-2-20A Test Tb (met 1A) ± 0,01 % ± 0,02 % 0,01 % VIBRATION 10 Hz to 500 Hz 10 g. 6 hours met B4 CEI 68-2-6 Test Fc ± 0,01 % ± 0,02 % 0,01 % CLIMATIC SEQUENCE –55°C / +155°C 6 cycles 95% RH 85mbar CEI 68-2-61 ± 0,05 % I. Resist. >102 MΩ – 0,05 % MOISTURE 56 days 95% RH + 40°C CEI 68-2-3 ± 0,05 % I. Resist. >102 MΩ – 0,02 % LOAD LIFE 1000 hours Pn at 70°C 90’ / 30’ ± 0,05 % ± 0,05 % 0,05 % 1000 hours / +155°C CEI 68-2-2 Test B ± 0,05 % – 0,05 % TEMPERATURE CYCLING MARKING In clear : series, model, SFERNICE trademark and manufacturing code. On back side : ohmic value (in Ω), tolerance (in %). HIGH TEMPERATURE STORAGE MIL NFC 83-220 CECC 40 300 R-55182E ORDERING PROCEDURE SERIES MODEL OHMIC VALUE TOLERANCE CNS 020 100 kΩ ± 0,02% 020 021 4-46 DRIFTS max. TESTS ±0,01 % ±0,02 % ±0,05 % ±0,1 %0 ±1 %