RN73
thin (metal) film flat chip resistors
EU
features
Nickel chromium thin film resistor element
Products with lead-free terminations meet
EU RoHS requirements
NOT RECOMMENDED FOR NEW DESIGN: REPLACEMENT RN73H, RN73R
Type Dimensions inches (mm)
dimensions and construction
(Inch Size Code)
L Wc d t
L
+.004 +.002
.039 .01
c c
RN73 1E -.002 .02.002 .008.004 -.004 .014.002
(0402) +0.1 (0.50.05) (0.20.1) +0.05 (0.350.05)
(1.0 ) (0.25 )
-0.05 -0.1
W
RN73 1J .063.008 .031.004 .012.004 .012.004 .018.004
Solder
(0603) (1.60.2) (0.80.1) (0.30.1) (0.30.1) (0.450.1)
Plating
+.008
Ni
.012
t .049.008
.079.008 .016.008 -.004 .02.004
RN73 2A
Plating
(1.250.2) +0.2
(2.00.2) (0.40.2) (0.50.1)
(0805)
(0.3 )
-0.1
d
Protective Resistive Inner
Coating Film Electrode RN73 2B .063.008
+.008
.016
(1206) (1.60.2)
.126.008 .02.012 -.004 .024.004
Ceramic
Substrate (3.20.2) (0.50.3) +0.2 (0.60.1)
RN73 2E .098.008
(0.4 )
-0.1
(1210) (2.50.2)
Derating Curve
100 100
80 80
1E, 1J (75C)
2A (80C)
2B (85C)
60 60
2E (95C)
40 40
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 75 85 95 155
Ambient Temperature Terminal Part Temperature
(C) (C)
For resistors operated at an ambient temperature of 70C 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
part temperature in the beginning of our catalog before use.
ordering information
RN73 2B T TE 1002 B 25
Termination Nominal T.C.R.
Type Packaging Tolerance
Size
Material Resistance (ppm/C)
TP: 0402: 7" 2mm pitch punch paper
T: Sn 3 significant A: 0.05% 05
1E
TD: 0603, 0805, 1206, 1210: figures + 1
L: SnPb B: 0.1% 10
1J
7" 4mm pitch punched paper
multiplier
C: 0.25% 25
2A
TDD: 0603, 0805, 1206, 1210:
R indicates
2B D: 0.5% 50
10" paper tape
decimal on
2E F: 1.0% 100
TE: 0805, 1206, 1210:
value <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
KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 29
% Rated Power
% Rated Power
resistorsresistors
RN73
thin (metal) film flat chip resistors
NOT RECOMMENDED FOR NEW DESIGN: REPLACEMENT RN73H, RN73R
applications and ratings
1
Power Rating Rated Absolute Absolute
Resistance Range ( )
Rated T.C.R.
Part @ 70C Terminal Max. Max.
E-24, E-96, E-192*
Ambient (ppm/C)
Designation High Part Working Overload
Temp. Max.
General (A0.05%) (B0.1%) (C0.25%) (D0.5%) (F1.0%)
Power Temp. Voltage Voltage
25 100 - 100k 100 - 100k 10 - 120k 10 - 120k
RN731E 50V 100V
.063W 70C 75C
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 70C 75C 25 1K - 47k 15 - 360k 15 - 360k 10 - 360k 10 - 360k 75V 150V
50 15 - 360k 15 - 360k 10 - 360k 10 - 360k
100 10 - 360k 10 - 360k
5 100 - 100k 100 - 100k
10 100 - 100k 100 - 100k 100 - 100k 100 - 100k 100 - 100k
150V 300V
.1W .125W 70C 25 51 - 100k 15 - 1M 15 - 1M 10 - 1M 10 - 1M
RN732A 80C
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
.125W .25W 70C 85C 25 51 - 300k 15 - 1M 15 - 1M 10 - 1M 10 - 1M 200V 400V
RN732B
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
70C 95C
200V 400V
50 15 - 1M 15 - 1M 10 - 1M 10 - 1M
100 10 - 1M 10 - 1M
1
* No marking on E-192 values Operating Temperature Range: -55C to +155C 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 (%+0.05)
Parameter Limit Typical Test Method
Within specified
Resistance 25C
tolerance
-6
Within specified +25C/+125C: T.C.R. = 5 (X10 /K)
T.C.R.
T.C.R. +25C/-55C and +25C/+125C: 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% 260C 5C, 10 seconds 1 second
Rapid Change of Temperature 0.25% 0.03% -55C (30 minutes), +125C (30 minutes), 300 cycles
General: 0.5% 0.06%
Moisture Resistance 40C 2C, 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%
70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
Endurance at 70C
High Power: 0.5% 0.1%
0.25% 0.1% +125C, 1000 hours
High Temperature Exposure
0.5% 0.25% +155C, 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 1.5k) 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