鈥?Resistance Range: 10鈩?to 40K鈩?/div>
鈥?Tolerance: to
鹵
0.01% (See table 1)
鈥?Load Life Stability:
鹵
0.01% maximum
鈭哛
under full rated
power @ + 70擄C for 2000 hours.
鈥?Shelf Life Stability: 50ppm/year (0.005%) maximum
鈭哛
non-hermetically sealed
鈥?Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)
鈥?Current Noise: < 0.010碌V(rms)/volt of applied voltage
鈥?Non Inductive: < 3.0nH
鈥?Terminal Finishes Available:
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
Product may not
be to scale
The VSM1506 Discrete Precision Chip Resistor uses the Bulk
Metal
廬
Foil (BMF) Technology for the resistance element. The
BMF provides inherently a low and predictable temperature
coefficient of resistance (TCR) and remarkable load life stability
for precision analog applications. The predictable TCR
variation is independent of value, date code, time and is
expressed via the curve shown below.
The VSM1506 has a newly designed, robust termination which
insures safe handling during the manufacturing process as
well as providing stability during the multiple thermal cyclings
it will see over its service life.
The load life specification has been improved providing even
greater life stability and the ohmic value has been extended
from 33K to 40K Ohms.
A voltage divider can be fashioned by using two arbitrarily
selected VSM1506s; with a resultant tracking specification of
< 3ppm/擄C.
The VSM1506 replaces the VSM1505 for new designs.
TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE
VALUE
(
鈩?/div>
)
100鈩?to 40K鈩?/div>
50鈩?to < 100鈩?/div>
25鈩?to < 50鈩?/div>
STANDARD TOLERANCE*
(%)
鹵
0.01
鹵
0.05
鹵
0.1
10鈩?to < 25鈩?/div>
鹵
0.25
*Tighter tolerances are available. Please contact Application
Engineering. Soldering temperatures used during installation may
cause resistance to shift up to 0.01%.
FIGURE 1 - NOMINAL TCR CURVE
鈥?5
鈥?0
+500
+400
+300
+200
+100
鈥?5
0
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
TEST
MIL-PRF-55342G
CHARACTERISTIC E
鈭?/div>
R LIMITS
鹵
0.10%
鹵
0.10%
鹵
0.10%
鹵
0.10%
鹵
0.20%
鹵
0.20%
鹵
0.50%
100
63
12
VSM1506
MAXIMUM
鈭?/div>
R LIMITS*
鹵
0.02%
鹵
0.02%
鹵
0.02%
鹵
0.03%
鹵
0.01%
鹵
0.03%
鹵
0.01%
+25
+50
+75
+100
+125
-5
p
+5
pp
m
pm
Thermal Shock
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Bonding
Moisture Resistance
Life 2000 hours @ + 70
擄
C
Power @ + 70
擄
C (mW)
Nominal Resistance/
Temperature (RT) Curve
鈭哛
R
(ppm)
0
鈥?00
鈥?00
鈥?00
鈥?00
鈥?00
Maximum
Spread
鹵2.3
ppm/擄C
+2.2 ppm/擄C
Nominal Chord
Slope (TCR)
鈥?.8 ppm/擄C
Nominal Chord
Slope (TCR)
Standard
Spread
鹵2.0
ppm/擄C
鈥?5擄C / +25擄C / +125擄C are the test points
with +25擄C as the reference temperature
The TCR for values < 100鈩?are influenced by the termination
composition and result in a deviation from this curve. Contact our
application engineering department for detailed specification on low
values
Maximum Voltage (V)
Maximum Weight (mg)
*As shown + 0.01 Ohms to allow for measurement errors at low values.
SALES
鈥?ISRAEL: foilsales.israel@vishay.com
鈥?FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com
鈥?AMERICAS: foilsales.usa@vishay.com
鈥?ASIA/JAPAN: foilsales.asia@vishay.com 鈥?UK/HOLLAND/SCANDANAVIA: foilsales.eunorth@vishay.com 鈥?GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
www.vishay.com
24
For technical questions in the Americas, contact foilsupport1@vishay.com
Document Number: 63071
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Revision 17-Aug-04
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