73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Features
Thick Film Construction
0.10 – 1 Watt Power Rating @ +70°C
Resistance Range 10 – 910 milliohms
Operating Temperature to +155°C
EIA Standard Package Sizes
Terminal Finish – Matte Tin (e3)
Reflow Capable per JEDEC J-STD-020, +260°C maximum
Tape and Reel Packaging
RoHS Compliant in Accordance with EU Directive 2011/65/EU
- Lead-Free Termination Finish
- Exemption 7(c)-I, Electrical and electronic components containing
lead [Pb] in glass
Applications
Current Detection
Current Limiting
Regulated Battery Circuits
Motor Control
Power Supply
Hard Disk Drives
Inverter/Converter
Industrial Equipment
Infotainment Systems
Description
73Lx & 73Ex Series Current Sensing Resistors are ceramic packaged devices that provides excellent accuracy for
current detection. Each resistor has good electrical and thermal characteristics.
Ordering Information
Pa cka g e
Code
2
Model
73
L
Code
L
E
Type
3-Digit Resistor Code
4-Digit Resistor Code
Res i s tor
V a l ue
R15
Res i s tor
T ol era nce
G
Resistor Value *
Code
2
R15
0.150 ohms
R050
0.050 ohms 2
* See Addendum for Standard EIA Values and Codes
Code
1
2
3
4
Package Size
0402 [1005]
0603 [1608]
0805 [2012]
1206 [3216]
Code
5
6
7
Package Size
1210 [3225]
2010 [5025]
2512 [6432]
Code
F
G
J
Tolerance
±1%
±2%
±5%
Notes:
1. No dashes or spaces to appear in part number.
2. For Type L use 3-digit resistor code only. For Type E use 4-digit resistor code only. The "R" indicates decimal point.
N ot a l l perf orm a nce com bi na ti ons a nd res i s tor va l ues m a y be a va i l a bl e.
Conta ct your l oca l CT S Repres enta ti ve or CT S Cus tom er Servi ce f or a va i l a bi l i ty.
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.
DOC# 008-0337-0 Rev. C
Page 1 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Ordering Information
Part Number Examples
0 . 1 5 0 Oh m s
J
[±5 % ]
73L3R15J
3 -D igit C o d e
G
[±2 % ]
73L3R15G
F
[±1 % ]
---
0 . 2 2 0 Oh m s
73L3R22J
73L3R22G
73L3R22F
0 . 0 5 6 Oh m s
73E3R056J
73E3R056G
73E3R056F
0 . 5 6 0 Oh m s
73L3R56J
73L3R56G
73L3R56F
0 . 0 7 5 Oh m s
73E3R075J
73E3R075G
73E3R075F
0 . 9 1 0 Oh m s
73L3R91J
73L3R91G
73L3R91F
0 . 0 9 1 Oh m s
73E3R091J
73E3R091G
73E3R091F
To ler an c e /
Valu e
To ler an c e /
Valu e
0 . 0 5 0 Oh m s
J
[±5 % ]
73E3R050J
4 -D igit C o d e
G
[±2 % ]
73E3R050G
F
[±1 % ]
73E3R050F
Electrical & Environmental Specifications
Operating Conditions
R at ed
W at t age 1
[W at t s]
R esist an c e
R an ge
[m ili o h m ]
73L1
0.100
200 - 910
73L2
0.100
200 - 910
73L3
0.125
73L4
0.250
Mo d el
Ty p e
200 - 910
100 - 910
200 - 910
100 - 910
200 - 910
73L5
0.500
73L6
0.750
73L7
1.000
100 - 910
200 - 910
100 - 910
200 - 910
100 - 910
R esist an c e
To ler an c e
[% ]
G = ±2
J = ±5
G = ±2
J = ±5
F = ±1
G = ±2
J = ±5
F = ±1
G = ±2
J = ±5
F = ±1
G = ±2
J = ±5
F = ±1
G = ±2
J = ±5
F = ±1
G = ±2
J = ±5
Tem p er at u r e
C o effic ien t
Op er at in g
Tem p er at u r e
R an ge
W o r k in g
Vo lt age
[m ax im u m V]
Ov er lo ad
Vo lt age
[m ax im u m ]
-55°C to +155°C
V=√(P*R)
100V
Op er at in g
Tem p er at u r e
R an ge
W o r k in g
Vo lt age
[m ax im u m V]
Ov er lo ad
Vo lt age
[m ax im u m ]
-55°C to +155°C
---
---
±300ppm/°C
±300ppm/°C
±200ppm/°C
±100ppm/°C
±200ppm/°C
±100ppm/°C
±200ppm/°C
±100ppm/°C
±200ppm/°C
±200ppm/°C
1. @ +70°C
R at ed
W at t age 1
[W at t s]
R esist an c e
R an ge
[m ili o h m ]
7 3 E3
0.250
50 - 91
7 3 E4
0.500
50 - 91
7 3 E6
1.000
50 - 91
Mo d el
Ty p e
R esist an c e
To ler an c e
[% ]
F = ±1
J = ±5
F = ±1
J = ±5
F = ±1
J = ±5
Tem p er at u r e
C o effic ien t
±100ppm/°C
±100ppm/°C
±100ppm/°C
1. @ +70°C
DOC# 008-0337-0 Rev. C
Page 2 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Electrical & Environmental Specifications
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.
E = Rated Voaltge [V]
E = √ PxR
P = Rated Power [W]
R = Nomimal Resistance [Ω]
Environmental Parameters
Max im u m D elt a R [% ]
Test D esc r ip t io n
Th er m al C y c le
Sh o r t Tim e Ov er lo ad
Test
5.00
2.50
5 cycles -55°C to +125°C
2½ times rated working voltage for 5 seconds
Mo ist u r e R esist an c e
3.00
240 hours; +40°C, 90% RH
H igh Tem p er t u r e Ex p o su r e
3.00
1,000 hours @ +155°C, no load
L o ad L ife
5.00
1,000 hours @ +70°C, rated load
R esist an c e t o So ld er H eat
3.00
10 seconds @ +260°C solder
R esist an c e t o So lv en t s
---
Isopropyl alcohol, Freon TMC
So ld er ab ilit y
---
RMA Flux, +230°C, 5 seconds dip, 95% coverage
DOC# 008-0337-0 Rev. C
Page 3 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Mechanical Specifications
Package Drawing/Dimensions
D im en sio n s
[m m ]
Mo d el
Ty p e
P ac k age
Code
I n c h [m m ]
L
W
t
c
d
73L1
0402 [1005]
1.00 ±0.05
0.50 ±0.05
0.35 ±0.05
0.20 ±0.10
0.25 ±0.10
73L2
0603 [1608]
1.60 ±0.15
0.25 ±0.20
0.25 ±0.20
0805 [2012]
2.00
0.40 ±0.20
0.40 ±0.20
1206 [3216]
3.20
0.50 ±0.20
0.40 ±0.20
0.50 ±0.20
0.55 ±0.10
73L5
1210 [3225]
3.20
0.50 ±0.20
0.50 ±0.20
73L6
7 3 E6
2010 [5025]
5.00 ±0.15
2.50 ±0.15
0.56 ±0.15
0.60 ±0.25
0.25 ±0.25
0.60 ±0.20
0.60 ±0.25
73L7
2512 [6432]
6.30 ±0.15
3.20 ±0.15
0.56 ±0.15
0.60 ±0.25
0.60 ±0.25
73L3
7 3 E3
73L4
7 3 E4
0.80
+0.20
-0.10
+0.10
-0.15
+0.10
-0.15
1.25
1.60
2.60
+0.20
-0.10
+0.20
-0.10
+0.10
-0.15
+0.10
-0.15
0.50
0.50
0.55
0.55
+0.15
-0.05
+0.15
-0.05
+0.15
-0.05
+0.15
-0.05
Notes
1. Terminal Details
Base Metal - Silver [Ag] or Cooper [Cu] plate.
Barrier Plating – Nickel [Ni].
Finish Plating – Matte Tin [Sn].
Recommended Pad Layout
Mo d el
Ty p e
73L1
73L2
73L3
7 3 E3
73L4
7 3 E4
73L5
73L6
7 3 E6
73L7
A
0.60
1.00
D im en sio n s
[m m ]
B
2.00
3.00
C
0.70
1.20
1.20
4.00
1.65
2.20
5.00
2.00
2.20
5.00
2.90
3.20
6.60
3.00
4.20
8.20
3.70
DOC# 008-0337-0 Rev. C
Page 4 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Mechanical Specifications
Marking Information
Mo d el
Ty p e
73L1
73L2
73L3
73L4
73L5
73L6
73L7
7 3 E3
7 3 E4
73L7
None
Rxx or Rxxx = "R" is the decimal point and 2 or 3 digits are
significant values. See resistor table for codes.
None
Packaging
Tape and Reel Information
Paper Tape
Mo d el
Ty p e
73L1
73L2
73L3
7 3 E3
73L4
7 3 E4
73L5
[mm]
A
B
t
0.70 ±0.08
1.10 ±0.20
1.20 ±0.08
1.90 ±0.20
0.50 ±0.10
0.70 ±0.10
1.65 ±0.20
2.40 ±0.20
0.80 ±0.20
+0.10
-0.15
2.90 ±0.10
+0.10
-0.15
3.60 ±0.10
2.00
DOC# 008-0337-0 Rev. C
3.57
Embossed Tape
Mo d el
Ty p e
73L6
7 3 E6
73L7
[mm]
A
B
t
2.905 ±0.10
5.30 ±0.10
1.00 ±0.10
3.40 ±0.10
6.60 ±0.10
1.00 ±0.10
0.80 ±0.20
0.80 ±0.20
Page 5 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Packaging
Tape and Reel Information
Reel
Mo d el
Ty p e
73L1
73L2
73L3
7 3 E3
73L4
7 3 E4
73L5
73L6
7 3 E6
73L7
[mm]
Qu an t it y
P er R eel
10,000
5,000
13.0 ±1.4
13.0 ±1.4
5,000
13.0 ±1.4
5,000
13.0 ±1.4
5,000
13.0 ±1.4
4,000
17.0 ±1.4
4,000
17.0 ±1.4
DOC# 008-0337-0 Rev. C
W
M
A
B
C
D
180
2.5 ±0.6
13.5 ±0.6
21.9 ±0.6
60
Page 6 of 7
©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.
73Lx & 73Ex Series
Current Sensing Resistor – Flat Terminal Chip
Addendum
Standard EIA Codes and Resistor Values – E-24 [3-Digit Resistor Code for F,G&J Tolerances]
C OD E
OH MS
C OD E
OH MS
C OD E
OH MS
R10
0.100
R27
0.270
R68
0.680
R11
0.110
R30
0.300
R75
0.750
R12
0.120
R33
0.330
R82
0.820
R13
0.130
R36
0.360
R91
0.910
R15
0.150
R39
0.390
R16
0.160
R43
0.430
R18
0.180
R47
0.470
R20
0.200
R51
0.510
R22
0.220
R56
0.560
R24
0.240
R62
0.620
C OD E
OH MS
Standard EIA Codes and Resistor Values – E-24 [4-Digit Resistor Code for F,G&J Tolerances]
C OD E
OH MS
R050
0.050
R051
0.051
R056
0.056
R062
0.062
R068
0.068
R075
0.075
R082
0.082
R091
0.091
C OD E
DOC# 008-0337-0 Rev. C
OH MS
C OD E
OH MS
C OD E
OH MS
Page 7 of 7
©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.
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