NMA/NK
Vishay Draloric
Metal Film Resistors,
High Positive TCR (4500 ± 500 for size 0207)
FEATURES
•
High positive Temperature Coefficient
(4500 ± 500 for size 0207)
•
Stable film structure
•
Lead (Pb)-free solder contacts
•
Pure tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
•
Compatible with "Restriction of the use of Hazardous
Substances" (RoHS) directive 2002/95/EC (issue 2004)
•
Temperature sensitive overload limiting
•
Suitable for measuring techniques and temperature
sensing applications
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P
70 °C
W
TEMPERATURE
COEFFICIENT
ppm/K
TOLERANCE
%
RESISTANCE
RANGE
Ω
E-SERIES
NMA0207
0.4
NK2
NK4
0.7
see graph
±5
± 10; ± 20
1R0 - 47R
R10 - 47R
24
4500 ± 500
± 5; ± 10
R10 - 47R
24
Notes
• Coating: 0207: green, NK4: brown
• Further values on request
• Marking: 5th band white
• Rated voltage P
×
R
TECHNICAL SPECIFICATIONS
PARAMETER
Rated Dissipation at 70 °C
Insulation Voltage (1 min)
Insulation Resistance
Thermal Resistance
Category Temperature Range
Terminal Strength, axial
Failure Rate
Weight
UNIT
W
V
eff
Ω
K/W
°C
N
10
-9
/h
g
NMA0207
NK2
0.4
> 700
≥
10
11
≤
220
- 55 to + 155
> 50
< 10
0.22
NK4
0.7
> 500
≥
10
10
≤
130
- 55 to + 155
> 50
< 10
0.7
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For technical questions, contact: ff3dresistors@vishay.com
Document Number: 20121
Revision: 11-Jan-07
NMA/NK
Metal Film Resistors,
High Positive TCR (4500 ± 500 for size 0207)
PART NUMBER AND PRODUCT DESCRIPTION NMA-SERIES
PART NUMBER: NMA0207001508K2500
Vishay Draloric
N
MODEL/SIZE
NMA0207
M
A
0
2
0
7
0
0
1
5
0
8
K
2
5
0
0
SPECIAL
up
to 2 digits
00
= Standard
SPECIAL CHARACTER
0
= neutral
TCR
0
= neutral
see diagram
VALUE
3 digit value
1 digit multiplier
MULTIPLIER
7
= *10
-3
8
= *10
-2
9
= *10
-1
TOLERANCE
J
=±5%
K
= ± 10 %
PACKAGING
25 = A5
D5 = R5
PRODUCT DESCRIPTION: NMA0207 1R5 10
%
A5
NMA0207
MODEL
NMA0207
1R5
RESISTANCE
VALUE
1R0 = 1
Ω
10R = 10
Ω
10
%
TOLERANCE
±
5
%
±
10
%
A5
PACKAGING
1)
R5
A5
Note
1. Please refer to table PACKAGING, page 138.
PART NUMBER AND PRODUCT DESCRIPTION NK-SERIES
PART NUMBER: NK20207001508K2200
N
MODEL/SIZE
NK20207
NK40414
K
2
0
2
0
7
0
0
1
5
0
8
K
2
2
0
0
SPECIAL
up
to 2 digits
00
= Standard
SPECIAL CHARACTER
0
= neutral
TCR
0
= neutral
see diagram
VALUE
3 digit value
1 digit multiplier
MULTIPLIER
7
= *10
-3
8
= *10
-2
9
= *10
-1
TOLERANCE
J
=±5%
K
= ± 10 %
M
= ± 20 %
PACKAGING
22
= A2
41
= A1 G73
FE
= RE
PRODUCT DESCRIPTION: NK2 1R5 10
%
A2
NK2
MODEL
NK2
NK4
1R5
RESISTANCE
VALUE
1R0 = 1
Ω
10R = 10
Ω
10
%
TOLERANCE
±
5
%
±
10
%
±
20
%
A2
PACKAGING
1)
A2
A1 G73
RE
Note
1. Please refer to table PACKAGING, page 138.
Note
• The PART NUMBER shown above is to facilitate the unified part numbering system for ordering products.
Document Number: 20121
Revision: 11-Jan-07
For technical questions, contact: ff3dresistors@vishay.com
www.vishay.com
137
NMA/NK
Vishay Draloric
Metal Film Resistors,
High Positive TCR (4500 ± 500 for size 0207)
PACKAGING
REEL
MODEL
PIECES/REEL
CODE
M.O.Q
PACKAGING UNITS
BOX
M.O.Q.
PACKAGING UNITS
2
1
2
PIECES/BOX
CODE
NMA 0207
5000
NK 2
NK4
2500
RE
1
R5
1
2000
5000
1000
A2
A5
A1
DIMENSIONS
6 mm*
L
L
1
DIMENSIONS
[in millimeters]
D
d
MODEL
D
max
NMA0207/
NK 2
2.5
-0.3
L
L
1 max
7.0
B
d
e
6.3
-0.5
53 ± 1
1)
0.6
7.5
e
B
NK4
4.1
-0.5
12.0
-1.5
16.0
73 ± 1
0.8
15.0
• Taping in acc. with IEC60286-1
• d according to IEC60301
• D and L measured in acc. with IEC60294
Note
1. Also available in 26 mm tape spacing
RATED POWER IN
%
TEMPERATURE COEFFICIENT (10-6/K)
120
100
80
60
40
20
0
- 55
6000
5000
4000
3000
2000
1000
- 25
0
25
50
75
70
100
125
155
175
200
0.1
Ω
1
Ω
AMBIENT TEMP. IN °C
10
Ω
68
Ω
RESISTANCE VALUE R (
Ω
)
DERATING
TEMPERATURE COEFFICIENT
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138
For technical questions, contact: ff3dresistors@vishay.com
Document Number: 20121
Revision: 11-Jan-07
NMA/NK
Metal Film Resistors,
High Positive TCR (4500 ± 500 for size 0207)
PERFORMANCE
TEST
Endurance Test
IEC 60115-1 4.25.1
Endurance at UCT
IEC 60115-1 4.25.3
Damp Heat Steady State
IEC 60115-1 4.24; IEC 60068-2-3
Resistance to Soldering Heat
IEC 60115-1 4.18, IEC 60068-2-20
Robustness of Terminations
IEC 60115-1 4.16
CONDITIONS OF TEST
1000 hours at 70 °C, 1.5 hours “ON”, 0.5 hours “OFF”
TEST RESULTS
≤
± 1.0
%
≤
± 1.0
%
≤
± 1.0
%
Vishay Draloric
1000 hours at 155 °C without load
56 days at 40 °C and 93
%
relative humidity
10 secons at 260 °C solder bath temperature
≤
± 0.25
%
Tensible, bending and torsion
≤
± 0.25
%
APPLICABLE SPECIFICATIONS
• CECC 40000/40100
• EN 1400/IEC60115-1
Document Number: 20121
Revision: 11-Jan-07
For technical questions, contact: ff3dresistors@vishay.com
www.vishay.com
139
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
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1
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