RN73
ultra precision 0.05%, 0.1%, 1% tolerance
thin film chip resistor
resistors EU
features
• Nickel chromium thin film resistor element
• Products with lead-free terminations meet
EU RoHS requirements
dimensions and construction Type Dimensions inches (mm)
(Inch Size Code) L W c d t
c L c .039 +.004 .01 +.002
RN73 1E -.002 .02±.002 .008±.004 -.004 .014±.002
(0402) (1.0 +0.1 ) (0.5±0.05) (0.2±0.1) (0.25 +-00..015) (0.35±0.05)
-0.05
W Solder RN73 1J .063±.008 .031±.004 .012±.004 .012±.004 .018±.004
Plating (0603) (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.3±0.1) (0.45±0.1)
t Ni .079±.008 .049±.008 .016±.008 .012 +.008 .02±.004
Plating RN73 2A -.004
(0805) (2.0±0.2) (1.25±0.2) (0.4±0.2) (0.3 +0.2 ) (0.5±0.1)
d Protective Resistive Inner -0.1
Coating Film Electrode RN73 2B .063±.008 +.008
Ceramic (1206) .126±.008 (1.6±0.2) .02±.012 .016 -.004 .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 1E, 1J (75°C)
Power Power 2A (80°C)
60 60 2B (85°C)
2E (95°C)
Rated 40 Rated 40
% %
20 20
0 20 120 0
-60 -40 -20 0 40 60 80 100 140
-60 -40 -20 0 20 40 60 80 100 120 140
-55 70 155 -55 75 85 95 155
Ambient Temperature Terminal Part Temperature
(°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
Type Size Termination Packaging Nominal Tolerance T.C.R.
Material Resistance (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
2A 7" 4mm pitch punched paper multiplier C: ±0.25% 25
2B TDD: 0603, 0805, 1206, 1210: “R” indicates D: ±0.5% 50
10" paper tape decimal on
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. 11/06/17
38 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
RN73
ultra precision 0.05%, 0.1%, 1% tolerance
thin film chip resistor
applications and ratings resistors
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 Temp. Part Max. Working Overload
General Power Temp. (A±0.05%) (B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) Voltage Voltage
RN731E .063W — 70°C 75°C ±25 — 100 - 100k 100 - 100k 10 - 120k 10 - 120k 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
RN732E .25W — 70°C 95°C ±25 51 - 510k 15 - 1M 15 - 1M 10 - 1M 10 - 1M
±50 — 15 - 1M 15 - 1M 10 - 1M 10 - 1M 200V 400V
±100 — — — 10 - 1M 10 - 1M
* No marking on E-192 values Operating Temperature Range: -55°C to +155°C 1 Reliability 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
Resistance Within specified — 25°C
tolerance
T.C.R. Within specified — +25°C/+125°C: T.C.R. = ±5 (X10-6/K)
T.C.R. +25°C/-55°C and +25°C/+125°C: all others
Overload (Short time) General: ±0.1% ±0.01% 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
Moisture Resistance General: ±0.5% ±0.06% 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
High Power: ±0.5% ±0.07%
Endurance at 70°C General: ±0.25% ±0.02% 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
High Power: ±0.5% ±0.1%
High Temperature Exposure ±0.25% ±0.1% +125°C, 1000 hours
±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.
• Please pay attention that the top of an iron does not direct touch to the components. There is a risk that may cause a change in resistance. Take care that another risk may happen that the protecting coat is
carbonized in an instant when touched directly by the top of the iron, also climatic-proof for electric corrosion or insulation of protecting coat may be dropped down. Be sure not to give high temperature on the
top of the iron as it will degrade the protecting coat.
• Avoid storing components under direct sun rays, high temperature/humidity. Direct sun rays will cause quality change of taping and difficulty of keeping appropriate peeling strength. 5~35°C/35~75%RH, there is
no deterioration of solderability for 12 months, but take special care for storing, because condensation, dust, and toxic gas like hydrogen sulfide, sulfurous acid gas, hydrogen chloride, etc. may drop solderability.
● 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.
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. 2/23/16
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 39
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RN731JTTD3203B25 RN731JTTD3203B50 RN731JTTD3203C25 RN731JTTD3203C50 RN731JTTD3203D100
RN731JTTD3203D25 RN731JTTD3203D50 RN731JTTD3203F100 RN731JTTD3203F25 RN731JTTD3203F50
RN731JTTD3240B05 RN731JTTD3240B10 RN731JTTD3240B50 RN731JTTD3240C10 RN731JTTD3240C25
RN731JTTD3240C50 RN731JTTD3240D10 RN731JTTD3240D100 RN731JTTD3240D25 RN731JTTD3240D50
RN731JTTD3240F100 RN731JTTD3240F25 RN731JTTD3241A05 RN731JTTD3241A10 RN731JTTD3241A25
RN731JTTD3241B05 RN731JTTD3241C10 RN731JTTD3241C25 RN731JTTD3241C50 RN731JTTD3241D10
RN731JTTD3241D100 RN731JTTD3241D25 RN731JTTD3241D50 RN731JTTD3241F100 RN731JTTD3242A05
RN731JTTD3242A10 RN731JTTD3242A25 RN731JTTD3242B05 RN731JTTD3242B10 RN731JTTD3242C10
RN731JTTD3242C25 RN731JTTD3242C50 RN731JTTD3242D10 RN731JTTD3242D100 RN731JTTD3242D50
RN731JTTD3242F10 RN731JTTD3242F100 RN731JTTD3242F25 RN731JTTD3242F50 RN731JTTD3243B25
RN731JTTD3243C25 RN731JTTD3243C50 RN731JTTD3243D100 RN731JTTD3243D25 RN731JTTD3243D50