RN73 s r thin (metal) film flat chip resistors o t s si e EU r features • Nickel chromium thin film resistor element • Products with lead-free terminations meet EU RoHS requirements NOT RECOMMENDED FOR NEW DESIGN: REPLACEMENT RN73H, RN73R dimensions and construction Type Dimensions inches (mm) (Inch Size Code) L W c d t L c c RN73 1E .039 +-..000042 .02±.002 .008±.004 .01 +-..000024 .014±.002 (0402) (1.0 +0.1 ) (0.5±0.05) (0.2±0.1) (0.25 +0.05) (0.35±0.05) -0.05 -0.1 W RN73 1J .063±.008 .031±.004 .012±.004 .012±.004 .018±.004 Solder Plating (0603) (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.3±0.1) (0.45±0.1) t NPliating RN73 2A .079±.008 .049±.008 .016±.008 .012 +-..000084 .02±.004 (0805) (2.0±0.2) (1.25±0.2) (0.4±0.2) (0.3 +0.2) (0.5±0.1) -0.1 d Protective Resistive Inner Coating Film Electrode RN73 2B .063±.008 Ceramic (1206) .126±.008 (1.6±0.2) .02±.012 .016 +-..000084 .024±.004 Substrate RN73 2E (3.2±0.2) .098±.008 (0.5±0.3) (0.4 +0.2) (0.6±0.1) (1210) (2.5±0.2) -0.1 Derating Curve 100 100 80 80 er er 12EA, (18J0 °(C75)°C) Pow60 Pow60 22BE ((8955°°CC)) d d e e Rat40 Rat40 % % 20 20 0 0 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -40 -20 0 20 40 60 80 100 120 140 -55 70 155 -55 758595 155 Ambient Temperature Terminal PartTemperature (°C) (°C) For resistors operated at an ambient temperature of 70°C or above, a For resistors operated terminal part temperature of described for each size power rating shall be derated in accordance with the above derating curve. or above, a power rating shall be derated in accordance with derating curve. Please refer to “Introduction of the derating curves based on the terminal ordering information part temperature” in the beginning of our catalog before use. RN73 2B T TE 1002 B 25 Termination Nominal T.C.R. Type Size Material Packaging Resistance Tolerance (ppm/°C) 1E T: Sn TP: 0402: 7" 2mm pitch punch paper 3 significant A:±0.05% 05 1J L: SnPb TD: 0603, 0805, 1206, 1210: figures + 1 B:±0.1% 10 7" 4mm pitch punched paper multiplier 2A C:±0.25% 25 TDD: 0603, 0805, 1206, 1210: “R” indicates 2B 10" paper tape decimal on D:±0.5% 50 2E TE: 0805, 1206, 1210: value <100Ω F: ±1.0% 100 7" embossed plastic TED: 0805, 1206, 1210: 10" embossed plastic For further information on packaging, please refer to Appendix A Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 9/30/19 29 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

RN73 r e s thin (metal) film flat chip resistors is t o NOT RECOMMENDED FOR NEW DESIGN: REPLACEMENT RN73H, RN73R rs applications and ratings Power Rating1 Rated Rated T.C.R. Resistance Range (Ω) Absolute Absolute Part @ 70°C Ambient Terminal (ppm/°C) E-24, E-96, E-192* Max. Max. Designation High Part Working Overload General Power Temp. Temp. Max. (A±0.05%) (B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) Voltage Voltage ±25 — 100 - 100k 100 - 100k 10 - 120k 10 - 120k RN731E .063W — 70°C 75°C 50V 100V ±50 — 100 - 100k 100 - 100k 10 - 120k 10 - 120k ±5 1K - 47k 100 - 47k — — — ±10 1K - 47k 100 - 47k 100 - 47k 100 - 47k 100 - 47k RN731J .063W .1W 70°C 75°C ±25 1K - 47k 15 - 360k 15 - 360k 10 - 360k 10 - 360k 75V 150V ±50 — 15 - 360k 15 - 360k 10 - 360k 10Ω - 360k ±100 — — — 10 - 360k 10 - 360k ±5 100 - 100k 100 - 100k — — — ±10 100 - 100k 100 - 100k 100 - 100k 100 - 100k 100 - 100k RN732A .1W .125W 70°C 80°C ±25 51 - 100k 15 - 1M 15 - 1M 10 - 1M 10 - 1M 150V 300V ±50 — 15 - 1M 15 - 1M 10 - 1M 10 - 1M ±100 — — — 10 - 1M 10 - 1M ±5 100 - 300k 100 - 300k — — — ±10 100 - 300k 100 - 300k 100 - 300k 100 - 300k 100 - 300k RN732B .125W .25W 70°C 85°C ±25 51 - 300k 15 - 1M 15 - 1M 10 - 1M 10 - 1M 200V 400V ±50 — 15 - 1M 15 - 1M 10 - 1M 10 - 1M ±100 — — — 10 - 1M 10 - 1M ±10 100 - 510k 100 - 510k 100 - 510k 100 - 510k 100 - 510k ±25 51 - 510k 15 - 1M 15 - 1M 10 - 1M 10 - 1M RN732E .25W — 70°C 95°C 200V 400V ±50 — 15 - 1M 15 - 1M 10 - 1M 10 - 1M ±100 — — — 10 - 1M 10 - 1M * No marking on E-192 values Operating Temperature Range: -55°C to +155°C 1Reliability performance is different. Please confirm the performance table. If any questions should arise whether to use the “Rated Ambient Temperature” or the “Rated Terminal Part Temperature”, please give priority to the “Rated Terminal Part Temperature.” Prior to use and for more details refer to “Introduction of the derating curves on the terminal part temperature” in the beginning of the catalog. environmental applications Performance Characteristics Requirement ∆ R ±(%+0.05Ω) Parameter Limit Typical Test Method Within specified Resistance — 25°C tolerance Within specified +25°C/+125°C: T.C.R. = ±5 (X10-6/K) T.C.R. — T.C.R. +25°C/-55°C and +25°C/+125°C: all others General: ±0.1% ±0.01% Overload (Short time) Rated Voltage x 2.5 or Max. overload voltage, whichever is less for 5 seconds High Power: ±0.5% ±0.03% Resistance to Solder Heat ±0.1% ±0.04% 260°C ± 5°C, 10 seconds ± 1 second Rapid Change of Temperature ±0.25% ±0.03% -55°C (30 minutes), +125°C (30 minutes), 300 cycles General: ±0.5% ±0.06% Moisture Resistance 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle High Power: ±0.5% ±0.07% General: ±0.25% ±0.02% Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle High Power: ±0.5% ±0.1% ±0.25% ±0.1% +125°C, 1000 hours High Temperature Exposure ±0.5% ±0.25% +155°C, 1000 hours Precautions for Use • The properly and electrostatically measured taping materials are used for the components, but attention should be paid to the fact that there is some danger the parts absorb on the top tapes to cause a failure in the mounting and the parts are destructed by static electricity (1kV and more: 1J, 2A, 2B, 2E 0.5kV and more: 1E, Human Body Model 100pF 1.5kΩ) to change the resistance in the conditions of an excessive dryness or after the parts are given vibration for a long time as they are packaged on the tapes. Similarly, care should be given not to apply the excessive static electricity when mounting on the boards. • Ionic impurities such as flux etc. that are attached to these products or those mounted onto a PCB, negatively affect their moisture resistance, corrosion resistance, etc. The flux may contain ionic substances like chlorine, acid, etc. while perspiration and saliva include ionic impurities like sodium (Na?), chlorine (Cl−) etc. Therefore these kinds of ionic substances may induce electrical corrosion when they invade into the products. Either thorough washing or using RMA solder and flux are necessary since lead free solder contains ionic substances. Washing process is needed, before putting on moisture proof material in order to prevent electrical corrosion. The upper electrodes could be peeled off when a heat-resistant masking tape is attached to the mounted chip resistors and then detached from them. It is confirmed that the adhesiveness gets stronger due to ● the exposure to heat under mounting. Accordingly, we recommend the use of masking tape be refrained. If the use of heat-resistant masking tape is unavoidable, please make sure that the adhesives on the tape do not directly come in contact with the product. When high-pressure shower cleaning is implemented, there is a possibility of exfoliation of the top electrodes caused by the water pressure stress so please avoid the implementation. ●If the implementation is unavoidable, then please evaluate the products beforehand. ● For Surface Temperature Rise Graph see Environmental Applications. Additional environmental applications can also be found at www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 9/30/19 30 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

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