resistance value [ohm] / „r“ represents decimal point
type
Isabellenhütte Heusler GmbH & co. KG // sales.components@isabellenhuette.de //
Issue 14-July-2014
// current valid issue: see www.isabellenhuette.de
1 /4
ISA-PLAN
®
// PrecISIoN reSIStorS
VMS //
Size 2512
Recommended solder profile
Reflow- and IR-soldering
temperature
time
°C
sec
260
peak
255
40
217
90
Tape and reel information
Specification
tape width
reel size
Parts per reel
Packaging weight net
mm
inch
pcs
g
DIN eN 60286-3
12
13
9000
539
Available standard resistance values and tolerances*
Resistance values Tolerance 1 % Tolerance 2 %
r005
r0068
r010
r012
r015
r020
r022
r025
r027
r030
r033
r039
r040
r047
r050
r056
r068
r082
r100
r120
r150
r200
r220
r240
r270
r330
r470
r500
r680
1r00
Tolerance 5 %
* Further values and tolerances on request
= available
Isabellenhütte Heusler GmbH & co. KG // sales.components@isabellenhuette.de //
Issue 14-July-2014
// current valid issue: see www.isabellenhuette.de
2 /4
ISA-PLAN
®
// PrecISIoN reSIStorS
VMS //
Size 2512
Temperature dependence of the electrical resistance
dr/r20 [%]
1,0
0,8
0,6
0,4
0,2
0,0
-0,2
-0,4
-0,6
-0,8
-1,0
-40
-20
0
20
40
60
80
100
120
140
160
Power derating curve
P/P
Nom
1,25
1
0,75
0,5
0,25
0
0
20
40
60
80
100
120
140
160
180
terminal temperature t
K
[°c]
temperature [°c]
Limiting curve
typical temperature dependence of a VMS resistor
Stability < 0.7 %
Improved stability < 0.5 %
Mechanical dimensions and pcb-layout proposal (Reflow-soldering) [mm] / Drawing Z-YE-497
Layout if tc < 20 ppm/K is required for r in
between 30 and 80 mohm
Type
VMS
L
W
H
A
0.9
±0.2
B
0.5
±0.2
6.35
±0.3
3.05
±0.2
0.4
±0.15
Solder pad type
VMS
l
7.5
w
3.6
a
1.55
b
2.6
c
1.0
Isabellenhütte Heusler GmbH & co. KG // sales.components@isabellenhuette.de //
Issue 14-July-2014
// current valid issue: see www.isabellenhuette.de
3 /4
ISA-PLAN
®
// PrecISIoN reSIStorS
VMS //
Size 2512
Maximum pulse energy respectively pulse power for permanent operation
10000
10000
1000
100
1000
10
3
100
1
Pulse energy [J]
10
0,1
1
0,01
0,1
0,001
0,01
0,0001
0,0001
0,001
0,01
0,1
1
10
100
Pulse width [sec]
this curve is only valid for the resistance value r005. the shape of the curve in the range below 0.1 sec will be different for other resistance values.
therefore a separate qualification should be made for pulse power close to the above curve.
Specification
Parameters
temperature cycling
Low temperature Storage
resistance to Soldering Heat
Moisture resistance
Mechanical Shock
Vibration, High Frequency
operational Life
High temperature exposure
Bias Humidity
Test conditions
2000 cycles (-55 °c to +150 °c)
-65 °c for 24 h
260 °c for 10 sec / 8h steam aging
MIL-StD-202 method 106
100 g, 6 ms half sine
20 g, 10-2000 Hz
2000 h, t
K
max at rated power
2000 h / 170 °c
+85 °c, 85 r.F., 1000 h, powered
Specified values
±0.5 %
±0.1 %
±0.3 %
±0.3 %
±0.2 %
±0.2 %
±1.0 %, t
K
= 95 °c
±1.0 %
±0.5 %
Disclaimer //
All products, product specifications and data are subject to change without notice.
the product specifications do not expand or otherwise modify Isabellenhütte’s terms and conditions of sale, including but not limited to, the war-
ranty expressed therein. Isabellenhütte makes no warranty, representation or guarantee other than as set forth in its terms and conditions of sale.
Information provided in datasheets and/or specifications may vary from actual results in different applications. Any statements made by Isabel-
lenhütte regarding the suitability of products for certain types of applications are based on its knowledge of typical requirements that are often
placed on its products. It is the customer’s responsibility to validate that a particular product with the properties described in the product specifi-
cation is suitable for use in the application intended.
No license, express or implied, or otherwise, to any intellectual property rights is granted by this document.
Any and all liability arising out of the application or use of any product shall be as set forth in Isabellenhütte’s terms and conditions of sale.
Isabellenhütte Heusler GmbH & co. KG // sales.components@isabellenhuette.de //
Issue 14-July-2014
// current valid issue: see www.isabellenhuette.de
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