LVM / NVM / WVM Series
Stackpole Electronics, Inc.
Ceramic Housed Vertical Mount Resistor
Resistive Product Solutions
Features:
•
•
•
•
•
•
•
•
Flameproof inorganic construction
High temperature potting compound
LVM – Low resistance wire or ribbon element
NVM – Non-inductively Ayrton Perry winding
WVM – Precision wirewound element
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Electrical Specifications
Power Rating
Voltage Rating
Type / Code
TCR (ppm/°C)
(W)
(V)
@ 70ºC
LVM5
5
± 50 ppm to ± 400 ppm
√ P*R
LVM7
7
depending on value
LVM10
10
NVM5
5
350
< 1 Ω = ± 90 ppm
NVM7
7
500
1 Ω to 10 Ω = ± 50 ppm
NVM10
10
700
> 10 Ω = ± 20 ppm
WVM5
5
350
< 1 Ω = ± 90 ppm
WVM7
7
500
1 Ω to 10 Ω = ± 50 ppm
WVM10
10
700
> 10 Ω = ± 20 ppm
Maximum Working Voltage is limited by √ P*R unless specified otherwise.
Resistance Temperature Coefficient Standard
Ohmic Range (Ω) and Tolerance
0.5%
-
1%
5%
0.01 - 0.1
0.02 - 0.15
0.02 - 0.15
0.1 - 2.4 K
0.1 - 3.9 K
0.1 - 3.9 K
-
10%
-
0.1 - 5 K
0.1 - 8 K
0.1 - 8 K
Mechanical Specifications
LVM:
WVM:
Type/Code
LVM5, NVM5, WVM5
LVM7, NVM7, WVM7
LVM10, NVM10, WVM10
A
0.382
9.70
0.382
9.70
0.480
12.19
±
±
±
±
±
±
B
0.039
0.99
0.039
0.99
0.039
0.99
0.988
25.10
1.520
38.61
1.374
34.90
±
±
±
±
±
±
C
0.059
1.50
0.059
1.50
0.059
1.50
0.520
13.21
0.520
13.21
0.634
16.10
±
±
±
±
±
±
D
0.039
0.99
0.039
0.99
0.039
0.99
0.201
5.11
0.201
5.11
0.299
7.59
±
±
±
±
±
±
Lead Diameter
0.059
1.50
0.059
1.50
0.059
1.50
0.031
0.79
0.036
0.91
0.036
0.91
±
±
±
±
±
±
0.002
0.05
0.002
0.05
0.002
0.05
Lead Length
0.138
3.51
0.138
3.51
0.138
3.51
±
±
±
±
±
±
Unit
0.020 inches
0.51
mm
0.020 inches
0.51
mm
0.020 inches
0.51
mm
Performance Characteristics
Test
Moisture Resistance
Thermal Shock
Load Life @ 70C - 1000 hours
Resistance to Soldering Heat
Short Time Overload - 5 X Pn for 5 seconds
Dielectric Withstanding Voltage
Operating temperature range is -55ºC to +275ºC
Rev Date: 11/30/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
Test Result
± 5%
± 2%
± 5%
± 2%
± 2%
± 2%
1
www.seielect.com
marketing@seielect.com
LVM / NVM / WVM Series
Stackpole Electronics, Inc.
Ceramic Housed Vertical Mount Resistor
Resistive Product Solutions
Power Derating Curve:
Recommended Solder Profile
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Wave Soldering
Description
Maximum
Recommended
Preheat Time
80 seconds
70 seconds
Temperature Diff.
140°C
120°C
Solder Temp.
260°C
250°C
Dwell Time at Max.
10 seconds
5 seconds
Ramp DN (°C/sec)
N/A
N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Minimum
60 seconds
100°C
240°C
*
N/A
Convection IR Reflow
Description
Maximum
Recommended
Minimum
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
*
60 seconds
*
10 seconds
*
Rev Date: 11/30/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com
LVM / NVM / WVM Series
Stackpole Electronics, Inc.
Ceramic Housed Vertical Mount Resistor
Resistive Product Solutions
Recommended Lead Free Resistor Reflow Profile
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 3). 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 as
amended by Directive (EU) 2015/863/EU as regards the list of restricted substances.
RoHS Compliance Status
Standard
Product
Series
LVM
NVM
WVM
Description
Package /
Termination
Type
Standard
Series
RoHS
Compliant
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free
Effective Date
Code
(YY/WW)
Radial
YES
100% Matte SN
Jan-06
06/01
Radial
YES
100% Matte Sn
Always
Always
Radial
YES
100% Matte Sn
Jan-06
06/01
Ceramic Housed Vertical Mount
Low Resistance Resistor
(Ribbon Element)
Ceramic Housed Vertical Mount Wirewound
Resistor (Standard WW)
Ceramic Housed Vertical Mount
Wirewound Resistor
(Precision Wirewound)
“Conflict Metals” Commitment
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.
Rev Date: 11/30/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
www.seielect.com
marketing@seielect.com
LVM / NVM / WVM Series
Stackpole Electronics, Inc.
Ceramic Housed Vertical Mount Resistor
Resistive Product Solutions
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
L
Product Series
Code
Description
LVM Ribbon Element
Non-inductive
NVM
WVM Precision WW
V
Power Rating
Size
W
5
5
7
7
10
10
M
5
Tolerance
Code Tol
D 0.5%
1%
F
J
5%
K
10%
Rev Date: 11/30/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
J
B
Code Description
B
Bulk
4
R
1
0
Packaging
Size
Quantity
LVM5, NVM5, WVM5
1000
LVM7, NVM7, WVM7
800
LVM10, NVM10, WVM10
500
0
Resistance Value
Four characters with the
multiplier used
as the decimal holder.
"L" used as multiplier of 10-3
0.01 ohm = 10L0
0.1 ohm = R100
100 ohm = 100R
5 Kohm = 5K00
www.seielect.com
marketing@seielect.com
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