VSM1506
Vishay Foil Resistors
Bulk Metal® Foil Technology
Discrete High Precision Surface Mount Chip Resistor
FEATURES
• High Precision, Low TCR
• Temperature Coefficient of Resistance:
Nominal TCR: + 0.6ppm/°C (0°C to + 25°C)
- 0.6ppm/°C (+ 25°C to + 60°C)
Product may not
be to scale
+ 2.2ppm/°C (- 55°C to + 25°C)
- 1.8ppm/°C (+ 25°C to + 125°C)
• Resistance Range: 10Ω to 40KΩ
• Tolerance: to ± 0.01% (See table 1)
• Load Life Stability: ± 0.01% maximum ∆R under full rated
The VSM1506 Discrete Precision Chip Resistor uses the Bulk
power @ + 70°C for 2000 hours.
Metal® Foil (BMF) Technology for the resistance element. The
• Shelf Life Stability: 50ppm/year (0.005%) maximum ∆R
non-hermetically sealed
• Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)
• Current Noise: < 0.010µV(rms)/volt of applied voltage
• Non Inductive: < 3.0nH
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.
• Terminal Finishes Available:
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
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.
TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE
VALUE
(Ω)
STANDARD TOLERANCE*
(%)
The load life specification has been improved providing even
greater life stability and the ohmic value has been extended
from 33K to 40K Ohms.
100Ω to 40KΩ
50Ω to < 100Ω
25Ω to < 50Ω
10Ω to < 25Ω
± 0.01
± 0.05
± 0.1
A voltage divider can be fashioned by using two arbitrarily
selected VSM1506s; with a resultant tracking specification of
< 3ppm/°C.
± 0.25
*Tighter tolerances are available. Please contact Application
Engineering. Soldering temperatures used during installation may
cause resistance to shift up to 0.01%.
The VSM1506 replaces the VSM1505 for new designs.
FIGURE 1 - NOMINAL TCR CURVE
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
TEST
MIL-PRF-55342G
VSM1506
–55
CHARACTERISTIC E MAXIMUM
–50
–25
0
+25
+50
+75
+100
+125
+500
+400
+300
+200
+100
∆R LIMITS
± 0.10%
± 0.10%
± 0.10%
± 0.10%
± 0.20%
± 0.20%
± 0.50%
∆R LIMITS*
± 0.02%
± 0.02%
± 0.02%
± 0.03%
± 0.01%
± 0.03%
± 0.01%
+5 ppm
Thermal Shock
-5 ppm
Nominal Resistance/
Temperature (RT) Curve
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Bonding
Moisture Resistance
∆R
0
R
Maximum
(ppm)
Spread
–100
±2.3 ppm/°C
–200
–300
Standard
Spread
±2.0 ppm/°C
–1.8 ppm/°C
Nominal Chord
Slope (TCR)
+2.2 ppm/°C
Nominal Chord
Slope (TCR)
–400
–500
–55°C / +25°C / +125°C are the test points
with +25°C as the reference temperature
Life 2000 hours @ + 70°C
Power @ + 70°C (mW)
Maximum Voltage (V)
Maximum Weight (mg)
100
63
The TCR for values < 100Ω 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
12
*As shown + 0.01 Ohms to allow for measurement errors at low values.
SALES
• ISRAEL: foilsales.israel@vishay.com
• FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com
• AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDANAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
www.vishay.com
24
Document Number: 63071
Revision 17-Aug-04