Key Features
nUp to 2 Watts at 70°C
nValues down to R10
n8 chip sizes
nIdeal for current
detection
nValue marked on resistor
nSizes 0201 to 2512
n0402, 0603, 0805, 1206,
2512 stocked in
distribution
nNew Higher Power Version
now available
Applications
nAudio
nCommunications
nAutomotive
nLow voltage power supplies
nPower management
applications
SMD Low Ohmic - Current Sense Resistors
Type RL73 Series
1
1773269 CIS WR 02/2012 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Characteristics - Electrical - Standard Power
TE Connectivity are pleased to offer this thick film chip resistor for current sensing positions.
It has a special metal glaze resistive element and a nickel barrier layer beneath the solder to
prolong terminal life. Following the developments by semiconductor manufacturers in the
production of a range of IC's for battery charge management and low voltage power
supplies, the RL73 Series satisfies the demand for a low ohmic shunt resistor to act as a
current sensor.
Type TCR Power rating Resistance TDF TD TE Tape
@ 70°C Range
RL73X1H 1000PPM 0.05W R10 - R13 1000 5000 -- Paper tape
RL73V1H 600PPM 0.05W R15 - R47 1000 5000 -- Paper tape
RL73N1H 300PPM 0.05W R51 - R91 1000 5000 -- Paper tape
RL73N1E 300PPM 0.0625W R10 - R91 1000 5000 -- Paper tape
RL73N1J 300PPM 0.1W R10 - R91 1000 5000 -- Paper tape
RL73H2A 100PPM 0.125W R10 - R91 1000 5000 -- Paper tape
RL73K2A 200PPM 0.125W R10 - R91 1000 5000 -- Paper tape
RL73H2B 100PPM 0.25W R10 - R91 1000 5000 -- Paper tape
RL73K2B 200PPM 0.25W R10 - R91 1000 5000 -- Paper tape
RL73H2E 100PPM 0.5W R10 - R91 1000 5000 -- Paper tape
RL73K2E 200PPM 0.5W R10 - R91 1000 5000 -- Paper tape
RL73H2H 100PPM 0.75W R10 - R91 1000 -- 4000 Embossed plastic tape
RL73K2H 200PPM 0.75W R10 - R91 1000 -- 4000 Embossed plastic tape
RL73H3A 100PPM 1W R10 - R91 1000 -- 4000 Embossed plastic tape
RL73K3A 200PPM 1W R10 - R91 1000 -- 4000 Embossed plastic tape
SMD Low Ohmic - Current Sense Resistors
Type RL73 Series
2
1773269 CIS WR 02/2012 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Characteristics - Electrical - High power version
Type TCR Power rating Resistance TDF TD TE Tape
@ 70°C Range
RLP73M1E 400PPM 0.125W R051 - R10 1000 5000 -- Paper
RLP73N1E 300PPM 0.125W R110 - R47 1000 5000 -- Paper
RLP73K1E 200PPM 0.125W R51 - 1R0 1000 5000 -- Paper
RLP73M1J 400PPM 0.125W R051 - R10 1000 5000 -- Paper
RLP73N1J 300PPM 0.125W R110 - R47 1000 5000 -- Paper
RLP73K1J 200PPM 0.125W R51 - 1R0 1000 5000 -- Paper
RLP73M2A 400PPM 0.25W R051 - R10 1000 5000 -- Paper
RLP73N2A 300PPM 0.25W R110 - R47 1000 5000 -- Paper
RLP73K2A 200PPM 0.25W R51 - 1R0 1000 5000 -- Paper
RLP73V2B 600PPM 0.5W R010 - R020 1000 5000 -- Paper
RLP73M2B 400PPM 0.5W R022 - R047 1000 5000 -- Paper
RLP73N2B 300PPM 0.5W R051 - R091 1000 5000 -- Paper
RLP73K2B 200PPM 0.5W R10 - 1R0 1000 5000 -- Paper
RLP73V3A 600PPM 2W R010 - R020 1000 -- 4000 Plastic
RLP73M3A 400PPM 2W R022 - R047 1000 -- 4000 Plastic
RLP73N3A 300PPM 2W R051 - R091 1000 -- 4000 Plastic
RLP73K3A 200PPM 2W R10 - 1R0 1000 -- 4000 Plastic
Operating Voltage=√(P*R) ; Overload Voltage=2.5*√(P*R) ; Operating Current=√(P/R)
Maximum operating temperature -55°C to +155°C
* Recommended Circuit Board Design
For resistors operated in ambient temperatures above 70°C, power rating must be derated in accordance with this curve.
0 20 40 60 80 100 120 140 160 180
100
80
60
40
20
0
Power Ratio (%)
Ambient Temperature (°C)
Power Derating Curve
Characteristics - Environmental
Item Requirement Test Method
Temperature Coefficient As Specification -55°C ~ +125°C, 25°C is the reference temperature
of Resistance (TCR):
Short Time Overload: ±(0.5%+0.05Ω) RCWV*2.5 or Max. overload voltage for 5 seconds
for higher Power rating: ±(1.0% + 0.05Ω)
Insulation Resistance: ≥10G Max. overload voltage for 1 minute
±(1.0%+0.05Ω) 70 ±2°C, Max. working voltage for 1000 hrs with
Endurance: 1.5 hrs “ON” and 0.5 hrs “OFF”
Damp Heat with Load: ±(0.5%+0.05Ω) 40 ±2°C, 90-95% R.H. max. working voltage
for 1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF”
Dry Heat: ±(0.5%+0.05Ω) at +155°C for 1000 hrs
Bending Strength: As Spec. Bending once for 5 seconds 2010, 2512 sizes: 2mm
Other sizes: 3mm
Solderability: 95% min. coverage 245 ±5°C for 3 seconds
Resistance to Soldering Heat: ±(0.5%+0.05Ω) 260 ±5°C for 10 seconds
Voltage Proof: No breakdown or flashover 1.42 times RCWV (RMS) for 1 minute
Leaching: Individual leaching area ≤5% 260±5°C for 30 seconds
Total leaching area ≤10%
Thermal Shock: ±(0.5%+0.05Ω) -55°C to +155°C, 5 cycles
Reference Standards: IEC 60115-1, 60068-2-58; JIS-C 5201-1
Storage Temperature: 25±3°C; Humidity < 80%RH
SMD Low Ohmic - Current Sense Resistors
Type RL73 Series
3
1773269 CIS WR 02/2012 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Dimensions
Part Number LWCD t
RL73 1H (0201) 0.58 ±0.05 0.29 ±0.05 0.15 ±0.05 0.12 ±0.05 0.23 ±0.05
RL(P)73 1E (0402) 1.00 ±0.05 0.50 ±0.05 0.20 ±0.10 0.25 ±0.10 0.32 ±0.10
RL(P)73 1J (0603) 1.60 ±0.10 0.80 ±0.10 0.30 ±0.20 0.30 ±0.20 0.45 ±0.10
RL(P)73 2A (0805) 2.00 ±0.15 1.25 ±0.15 0.40 ±0.25 0.30 ±0.20 0.55 ±0.10
RL(P)73 2B (1206) 3.10 ±0.10 1.55 ±0.15 0.40 ±0.25 0.50 ±0.30 0.55 ±0.10
RL(P)73 2E (1210) 3.10 ±0.10 2.50 ±0.15 0.50 ±0.25 0.50 ±0.30 0.55 ±0.10
RL(P)73 2H (2010) 5.00 ±0.20 2.50 ±0.15 0.50 ±0.25 0.60 ±0.30 0.60 ±0.15
RL73 3A (2512) 6.35 ±0.20 3.10 ±0.15 0.55 ±0.25 0.60 ±0.30 0.60 ±0.10
RLP73 3A (2512) <R10 6.35 ±0.20 3.15 ±0.15 0.55 ±0.25 0.60 ±0.30 0.74 ±0.10
RLP73 3A (2512) ≥R10 6.35 ±0.20 3.15 ±0.15 2.10 ±0.10 0.60 ±0.30 0.74 ±0.10
L
D
W
t
C
1. Alumina Substrate
2. Bottom Electrode (Ag)
3. Top Electrode (Ag-Pd)
4. Edge Electrode (NiCr)
5. Barrier Layer (Ni)
6. External Electrode (Sn)
7. Resistor Layer (NiCr)
8. Overcoat (Epoxy)
9. Marking
Recommend Land Pattern
Type AB C
RL73 1H (0201) 0.25 0.3 0.40 ±0.2
RL(P)73 1E (0402) 0.5 0.5 0.60 ±0.2
RL(P)73 1J (0603) 0.8 1.0 0.90 ±0.2
RL(P)73 2A (0805) 1.0 1.0 1.35 ±0.2
RL(P)73 2B (1206) 2.0 1.15 1.70 ±0.2
RL(P)73 2E (1210) 2.0 1.15 2.50 ±0.2
RL(P)73 2H (2010) 3.6 1.4 2.50 ±0.2
RL73 3A (2512) 4.9 1.6 3.10 ±0.2
RLP73 3A (2512) <R10 4.9 1.6 3.10 ±0.2
RLP73 3A (2512) ≥R10 1.0 3.55 3.10 ±0.2
SMD Low Ohmic - Current Sense Resistors
Type RL73 Series
1773269 CIS WR 02/2012 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
4
Packaging Quantity & Reel Specifications
Type øA øB øC WT
Paper Embossed
Tape Plastic Tape
RL73 1H (0402) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 1E (0402) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 1J (0603) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 2A (0805) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 2B (1206) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 2E (1210) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 9.5 ±0.1 11.5 ±1.0 1000 / 5000 -
RL(P)73 2H (2010) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 13.5 ±1.0 15.5 ±1.0 - 1000 / 4000
RL(P)73 3A (2512) 178.0 ±1.0 60.0 +1.0 13.5 ±0.7 13.5 ±1.0 15.5 ±1.0 - 1000 / 4000
Paper Tape Specification
Type A B W E F P0P1P2øD0T
RL73 1H 0.38 ±0.05 0.68 ±0.05 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 2.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.42 ±0.20
RL(P)73 1E 0.65 ±0.10 1.15 ±0.10 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 2.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.45 ±0.10
RL(P)73 1J 1.10 ±0.10 1.90 ±0.10 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 4.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.70 ±0.10
RL(P)73 2A 1.60 ±0.10 2.40 ±0.20 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 4.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.85 ±0.10
RL(P)73 2B 1.90 ±0.10 3.50 ±0.20 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 4.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.85 ±0.10
RL(P)73 2E 2.90 ±0.10 3.50 ±0.20 8.0 ±0.20 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 4.00 ±0.05 2.00 ±0.05 1.50+0.1,-0 0.85 ±0.10
RL73 H 2A R10 F TD
Common Part
RL73
RLP73
TCR
X -1000PPM
V - 600PPM
N - 300PPM
H - 100PPM
K - 200PPM
M - 400PPM
See above for
applicability
Size
1H -0201
1E -0402
1J -0603
2A -0805
2B -1206
2E -1210
2H -2010
3A -2512
Resistor Value
0.1 Ohm
(100milliOhm)
R10
0.91 Ohm
(910 milliOhm)
R91
Tolerance
F - ±1%
J - ±5%
Packaging
TDF -1000 REEL
TD -5000 REEL
TE -4000 REEL
See above for
applicability
How to Order
SMD Low Ohmic - Current Sense Resistors
Type RL73 Series
Embossed Plastic Tape Specifications
Type A B W E F P0P1P2øD0T
RL(P)73 2H 2.80±0.10 5.50±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
RL73 3A 3.50±0.10 6.70±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
RLP73 3A 3.38±0.10 6.68±0.10 12.0±0.30 1.75±0.10 5.5±0.01 4.00±0.10 4.00±0.10 2.00±0.05 1.50+0.05 1.45±0.20
5
TE Connectivity, TE connectivity (logo) and TE (logo) are trademarks.
Other logos, product and Company names mentioned herein may be trademarks of their respective owners.
While TE has made every reasonable effort to ensure the accuracy of the information in this datasheet, TE does not guarantee that it is error-free, nor does TE make any other
representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any adjustments to the information contained herein
at any time without notice. TE expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantability
or fitness for a particular purpose. The dimensions in this datasheet are for reference purposes only and are subject to change without notice. Specifications are subject to change
without notice. Consult TE for the latest dimensions and design specifications.
