MR/MRS/TMR Series
Low Resistance Value Resistor – Molded 2 and 4 Leads
Features:
•
•
•
•
•
•
•
•
Stackpole Electronics, Inc.
Resistive Product Solutions
Metal element resistors
Tinned copper leads
Low temperature coefficient
Molded bodies
TMR – Kelvin Bridge Test
MRS high stability version
Cut and formed product is available on selected sizes - contact factory for details
RoHS compliant
Electrical Specifications
Type / Code
MR1
(2)
MR3
(3)
MR5
(4)
MR10
TMR3
TMR5
(1)
(2)
(3)
(4)
Power Rating
Dielectric
Resistance Temperature
Short Time Overload
(Watts)
Strength
Coefficient
@ 70ºC
1W
3W
(1)
±50 to ±400 ppm/ºC
5 seconds at
5W
500 VAC
5x rated power
10W
3W
±40 ppm/ºC
5W
TCR is value dependent. Contact factory for specific data.
MR1 values 0.05Ω and below are non-magnetic and non-inductive
MR3 values 0.1Ω and below are non-magnetic and non-inductive
MR5 values 0.15Ω and below are non-magnetic and non-inductive
Ohmic Range (Ω) and
Tolerance
1%, 5%
0.01 - 0.1
0.005 - 0.2
0.005 - 0.3
0.01 - 0.5
0.005 - 0.2
0.005 - 0.3
Mechanical Specifications
MR
Type / Code
MR1
MR3
MR5
MR10
TMR3
TMR5
A
Body Length
0.385
9.78
0.560
14.22
0.925
23.50
1.925
48.90
0.625
15.88
0.940
23.88
±
±
±
±
±
±
±
±
±
±
±
±
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
B
Body Diameter
0.135
3.43
0.205
5.21
0.330
8.38
0.475
12.07
0.205
5.21
0.330
8.38
±
±
±
±
±
±
±
±
±
±
±
±
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
0.015
0.38
C
Lead Length (Bulk)
(1)
1.375
34.93
1.375
34.93
1.375
34.93
1.375
34.93
1.375
34.93
1.375
34.93
±
±
±
±
±
±
±
±
±
±
±
±
0.125
3.18
0.125
3.18
0.125
3.18
0.125
3.18
0.125
3.18
0.125
3.18
TMR
D
Lead Diameter
0.032
0.81
0.032
0.81
0.036
0.91
0.036
0.91
0.032
0.81
0.036
0.91
±
±
±
±
±
±
±
±
±
±
±
±
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
E
Lead Spacing
(Ref.)
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
-
0.125
3.18
0.200
5.08
(1) See Packaging Specification for lead length dimension for tape and reel packaged product
Rev Date: 08/30/2017
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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MR/MRS/TMR Series
Low Resistance Value Resistor – Molded 2 and 4 Leads
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70ºC - 1,000 hrs.
Resistance to Soldering Heat
Short Time Overload
Dielectric Withstanding Voltage
Operating Temperature Range: -55ºC to +275ºC
Test Results
±5%
±2%
±5%
±2%
±2%
±2%
Power Derating Curve:
100
-55ºC
70ºC
Percent Rated Power (%)
80
60
40
20
0
-60
275ºC
0
50
100
150
200
Ambient Temperature (ºC)
250
300
TCR x Resistance:
(ppm/ºC)
400
350
300
250
200
150
100
50
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
MR1, MR3
MR5, MR10
(Ohms)
Rev Date: 08/30/2017
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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marketing@seielect.com
MR/MRS/TMR Series
Low Resistance Value Resistor – Molded 2 and 4 Leads
Stackpole Electronics, Inc.
Resistive Product Solutions
Packaging Specifications
Series
Code
1
3
A max
.(1)
3.311
84.10
3.484
88.50
3.850
97.80
4.764
121.00
6.299
160.00
6.614
168.00
B max
13.504
343.00
13.504
343.00
13.504
343.00
13.504
343.00
13.504
343.00
13.504
343.00
C
0.197 ± 0.020
5.00 ± 0.50
0.394 ± 0.020
10.00 ± 0.50
0.394 ± 0.020
10.00 ± 0.50
0.394 ± 0.020
10.00 ± 0.50
0.394 ± 0.020
10.00 ± 0.50
0.394 ± 0.020
10.00 ± 0.50
D
(2)
2.063 ± 0.079
52.40 ± 2.00
2.063 ± 0.079
52.40 ± 2.00
2.875 ± 0.079
73.03 ± 2.00
4.310 ± 0.079
109.47 ± 2.00
2.063 ± 0.079
52.40 ± 2.00
2.063 ± 0.079
52.40 ± 2.00
Tape
0.250
6.35
0.250
6.35
0.250
6.35
0.250
6.35
0.250
6.35
0.250
6.35
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
MR
5
10
3
TMR
5
Dimension "E": This is a non-critical dimension that does not have a tolerance in the standard.
Range of diameters is from 0.547 inches (13.90 mm) to 1.500 inches (38.10 mm).
(1) Reference value only. The "A" dimension shall be governed by the overall length of the taped component.
The distance between flanges shall be 0.059 inches (1.50 mm) to 0.315 (8.00 mm) greater than the overall component.
(2) The given dimension "D" expresses the standard width spacing. A 26mm narrow spacing is available as option "N" packaging code.
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to
meet the various regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions
on Hazardous Substances” (RoHS 2). As part of this ongoing program, we periodically update this document with the
status regarding the availability of our compliant components. All our standard part numbers are compliant to EU
Directive 2011/65/EU of the European Parliament.
RoHS Compliance Status
Standard
Product
Series
MR
TMR
Description
Package /
Termination
Type
Axial
Kelvin
Axial
Kelvin
Standard
Series
RoHS
Compliant
YES
YES
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
Jan-06
Jan-06
Lead-Free
Effective Date
Code
(YY/WW)
06/01
06/01
Low Resistance Value Leaded Resistor -
Molded 2 Leads
Low Resistance Value Leaded Resistor -
Molded 4 Leads
100% Matte Sn
100% Matte Sn
Rev Date: 08/30/2017
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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marketing@seielect.com
MR/MRS/TMR Series
Low Resistance Value Resistor – Molded 2 and 4 Leads
“Conflict Metals” Commitment
Stackpole Electronics, Inc.
Resistive Product Solutions
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region”
of the Eastern Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals
used in the electronics industry is very complex, we work closely with our own suppliers to verify to the extent possible
that the materials and products we supply do not contain metals sourced from this conflict region. As such, we are in
compliance with the requirements of Dodd-Frank Act regarding Conflict Minerals.
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High
Concern) free and compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation,
Authorization and Restriction of Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH
Substance Candidate List.
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We
continually strive to improve our effect on the environment. We observe all applicable laws and regulations regarding
the protection of our environment and all requests related to the environment to which we have agreed. We are
committed to the prevention of all forms of pollution.
How to Order
1
2
3
4
5
6
7
8
9
M
R
3
F
T
R
1
0
0
Product Series
MR
2 Leads
TMR
4 Leads
MRS
High Stability
Size
1
3
5
10
Power
1W
3W
5W
10W
Tolerance
Code Tol
F
1%
J
5%
Packaging
Code Description
Size
MR1
MRS3
T
Tape and Reel
MR3
MR5
MR10
MR1, MR3, MR5
B
Bulk
MR10
TMR 3, 5
Quantity
2,000
1,000
750
500
250
1,000
500
100
Resistance Value
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier of
10
-3
for any value under
0.1 ohm.
0.005 ohm = 5L00
0.01 ohm = 10L0
0.2 ohm = R200
Rev Date: 08/30/2017
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
4
www.seielect.com
marketing@seielect.com
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