Leaded ResistoRs Flame-Proof & Non-Inductive Type Wirewound Resistors Normal & Miniature Style NKN Series Feat URes Power Rating 1/2W, 1W, 2W, 3W, 4W, 5W, 7W Resistance Tolerance 5% T.C.R. 300ppm/C Flameproof Multi-layer Coating Meets UL-94V-0 Flameproof Feature Meets Overload Test UL-1412 iNt Rod UCtio N de Rati NG CURVe The resistor element is a resistive wire which is For resistors operated in ambient temperatures above 40C, power rating must be derated wound in a single layer on a ceramic rod, with in accordance with the curve below. tinned connecting wires of electrolytic copper 40 70 200 275 C Rated Load (%) welded to the end-caps. The ends of the 100 3W-7W resistive wire and the leads are connected to 80 the caps by welding. The resistors are coated 1/2W-3WS 60 with layers of green color flame-proof lacquer. 40 The 5th color band is black to represent NKN 20 series. 50 100 150 200 250 300 Ambient Temperature (C) di MeNsio Ns Unit: mm st YLe di MeNsio N Normal Miniature L d H d NKN-50 NKN1WS 9.00.5 3.30.3 262.0 0.550.05 d NKN100 NKN2WS 11.51.0 4.50.5 352.0 0.80.05 NKN200 NKN3WS 15.51.0 5.00.5 332.0 0.80.05 H L D NKN300 th color code: black NKN5WS 17.51.0 6.50.5 322.0 0.80.05 NKN400 NKN500 NKN7WS 24.51.0 8.00.5 382.0 0.80.05 eLeCt RiCa L CHa Ra Cte Risti Cs No RMa L st YLe st YLe NKN-50 NKN100 NKN200 NKN300 NKN400 NKN500 Power Rating at 40C 3W 4W 5W Power Rating at 70C 1/2W 1W 2W Voltage Proof 250V 400V Resistance Range 0.08 - 15 0.05 - 40 0.03 - 90 0.1 - 120 0.18 - 220 Operating Temp. Range -40C to +200C Temperature Coefficient 300ppm/C Note: Special value is available on request MiNiat URe st YLe st YLe NKN1Ws NKN2Ws NKN3Ws NKN5Ws NKN7Ws Power Rating at 40C 5W 7W Power Rating at 70C 1W 2W 3W Voltage Proof 250V 400V Resistance Range 0.08 - 15 0.05 - 40 0.03 - 90 0.1 - 120 0.18 - 220 Operating Temp. Range - 40C to +200C Temperature Coefficient 300ppm/C Note: Special value is available on request eNViRo NMeNta L CHa Ra Cte Risti Cs PeRFo RMa NCe test test M et Hod a PPRaise Short Time Overload IEC 60115-1 4.13 10 times rated power for 5 Sec. 2.0%+0.05 Voltage Proof IEC 60115-1 4.7 in V-block for 60 Sec., test voltage by type By type Temperature Coefficient IEC 60115-1 4.8 -55C to +155C By type Insulation Resistance IEC 60115-1 4.6 in V-block for 60 Sec. >100M Solderability IEC 60115-1 4.17 2355C for 30.5 Sec. 95% Min. coverage No deterioration of Solvent Resistance of Marking IEC 60115-1 4.30 IPA for 50.5 Min. with ultrasonic coatings and markings Robustness of Terminations IEC 60115-1 4.16 Direct load for 10 Sec. in the direction of the terminal leads 2.5kg (24.5N) Damp Heat Steady State IEC 60115-1 4.24 402C, 90-95% RH for 56 days, loaded with 0.1 times RCWV 5.0%+0.05 Endurance at 70C IEC 60115-1 4.25 702C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off) 5.0%+0.05 Temperature Cycling IEC 60115-1 4.19 -55C Room Temp. +155C Room Temp. (5 cycles) 1.0%+0.05 Resistance to Soldering Heat IEC 60115-1 4.18 2603C for 101 Sec., immersed to a point 30.5mm from the body 1.0%+0.05 No evidence of flaming Accidental Overload Test IEC 60115-1 4.26 4 times RCWV for 1 Min. or arcing Note: Rated Continuous Working Voltage (RCWV) = Power Rating x Resistance Value