Fiche technique pour 73M1 Series

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©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
DOC# 008-0336-0 Rev. C Page 1 of 5
73M1 Series
Current Sensing Resistor – 1 Watt
Features
Metal Plate Construction – Copper Alloy
1 Watt Power Rating @ +70°C
Resistance Range 3 – 100 milliohms
Operating Temperature to +180°C
Surface Mount Package
Terminal Finish – Matte Tin [e3]
Reflow Capable per JEDEC J-STD-020, +260°C Maximum
Tape and Reel Packaging
Applications
Current Detection
Current Limiting
Regulated Battery Circuits
Motor Control
Power Supply
Hard Disk Drives
Inverter/Converter
Industrial Equipment
Infotainment Systems
Description
73M1 Series Current Sensing Resistor is a metal plate packaged device that provides excellent accuracy for
current detection. Each resistor has good electrical and thermal characteristics by using a special metallic resistor
material.
Ordering Information
73M
Code Code
1 G
F
Code
R050
Notes:
1. No dashes or spaces to appear in part number.
R050
F
Tolerance
Resistor Value *
0.050 ohms
±2%
±1%
* See Addendum for Standard EIA Values and Codes
Model
Not all performance combinations and resistor values may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
This product is specified for use only in standard commercial applications. Supplier disclaims all
express and implied warranties and liability in connection with any use of this product in any non-
commercial applications or in any application that may expose the product to conditions that are
outside of the tolerances provided in its specification.
1 Watt Rating
Resistor
Value
Resistor
Tolerance
Type
1
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
73M1 Series
Current Sensing Resistor – 1 Watt
DOC# 008-0336-0 Rev. C Page 2 of 5
Ordering Information
Part Number Examples
Electrical & Environmental Specifications
Operating Conditions
Power Derating Curve – Typical
With the rated ambient temperature set to +70°C, the maximum power [maximum current for 0Ω product] at a temperature of no more
than rated ambient temperature shall be equal to the rated power [rate current for 0Ω product]. The maximum power at a temperature
exceeding the rated ambient temperature shall be a value determined by reducing the rated power according to the power reduction
curve in the figure below.
Rated Voltage
The rated voltage shall be the DC or AC [effective power frequency] voltage corresponding to the rated power and shall be determined
with the formula shown below. If the determined rated voltage exceeds the maximum operating voltage specified in Operating Conditions
table, the maximum operating voltage shall be the rated voltage.
G
[±2%]
F
[±1%]
5m Ohms 73M1R005G 73M1R005G
8m Ohms 73M1R008G 73M1R008G
15m Ohms --- 73M1R015F
100m Ohms --- 73M1R100F
Tolerance /
Value
4-Digit Code
Model
Type
Rated
Power
[Watts]
Resistance
Range
[ohms]
Resistance
Tolerance
[%]
Temperature
Coefficient
Rated Ambient
Temperature
Operating
Temperature
Range
0.003 - 0.009 ±1, ±2
0.010 - 0.100 ±1
73M1
1.0
0.003Ω ≤ R < 0.005Ω: ±300ppm/°C
0.005Ω ≤ R < 0.010Ω: ±180ppm/°C
0.010Ω ≤ R ≤ 0.100Ω: ±100ppm/°C
-55°C to +180°C
+70°C
Ambient Temperature [°C]
20
0
-55
0
+70
+180
Rated Power Ratio [%]
100
80
60
40
E = Rated Voaltge [V]
E = √PxR
P = Rated Power [W]
R = Nomimal Resistance [Ω]
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©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
73M1 Series
Current Sensing Resistor – 1 Watt
DOC# 008-0336-0 Rev. C Page 3 of 5
Electrical & Environmental Specifications
Environmental Parameters
Mechanical Specifications
Package Drawing/Dimensions
Notes
Recommended Pad Layout
Maximum Delta R [%]
73M1
Short Time Overload ±0.5 2 times rated working voltage for 5 seconds
Moisture Resistance ±2.0 1,000 hours @ +40°C, 95% RH, cycle 1.5h ON & 0.5h OFF
Load Life ±2.0 1,000 hours @ +70°C, rated load, cycle 1.5h ON & 0.5h OFF
Resistance to Solder Heat ±0.5 5 seconds @ +260°C solder
Test
Test Description
L W t a bc/d
73M1 6.2 ±0.3 3.1 ±0.2 1.2 Max. 2.5 ±0.2 0.8 ±0.2 1.2 ±0.3
Dimensions
[mm]
Model
Type
A B C
73M1 3.30 7.50 3.10
Model
Type
Dimensions
[mm]
1. Terminal Details
Base Metal – Copper [Cu] 80m Ohm < R and Brass R ≤ 80m Ohm
Barrier Plating – Nickel [Ni]
Finish Plating – Matte Tin [Sn]
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©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
73M1 Series
Current Sensing Resistor – 1 Watt
DOC# 008-0336-0 Rev. C Page 4 of 5
Mechanical Specifications
Marking Information
Packaging
Tape and Reel Information
Model
Type
1Rxxx = "R" is the decimal point and 3 digits [E24] are significant values.
See resistor tables for codes.
2t = Tolerance; F = 1% & G = 2%.
Rxxx
3Z = Product type.
tZYM
4YM = Date Code.
Y = Year
M = Month; 1 - 9 is for January through September,
O, N and D for October through December respectively.
73M1
Part Marking
Embossed Tape [mm]
Model
Type A B C D E F G H J L M
73M1 3.5 ±0.1 6.6 ±0.1 12.0 ±0.2 5.5 ±0.1 1.75 ±0.10 8.0 ±0.1 2.0 ±0.1 4.0 ±0.1 1.5 ±0.2 1.5
+0.1
-0.0
1.3 ±0.1 0.30 ±0.05
K
Reel [mm]
Model
Type
Quantity
Per Reel
A
73M1 1,000 15.4
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©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
73M1 Series
Current Sensing Resistor – 1 Watt
DOC# 008-0336-0 Rev. C Page 5 of 5
Addendum
Standard EIA Codes and Resistor Values – E-24 [4-Digit Resistor Code for G&F Tolerances]
CODE OHMS CODE OHMS CODE OHMS CODE OHMS
R003 0.003 R013 0.013 R036 0.036 R068 0.068
R004 0.004 R015 0.015 R039 0.039 R075 0.075
R005 0.005 R016 0.016 R040 0.040 R082 0.082
R006 0.006 R018 0.018 R043 0.043 R091 0.091
R007 0.007 R020 0.020 R047 0.047 R100 0.100
R008 0.008 R022 0.022 R050 0.050
R009 0.009 R024 0.024 R051 0.051
R010 0.010 R027 0.027 R056 0.056
R011 0.011 R030 0.030 R062 0.062
R012 0.012 R033 0.033 R067 0.067