VSM1506 Datasheet, PDF (1/2 Pages) Vishay Siliconix – Bulk Metal Foil Technology Discrete High Precision Surface Mount Chip Resistor

VSM1506
Vishay Foil Resistors
Bulk Metal^® Foil Technology
Discrete High Precision Surface Mount Chip Resistor
Product may not
be to scale
The VSM1506 Discrete Precision Chip Resistor uses the Bulk
Metal^® 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/°C.
The VSM1506 replaces the VSM1505 for new designs.
FIGURE 1 - NOMINAL TCR CURVE
–55
–50
+500
+400
+300
+200
+100
∆R
R0
(ppm)
–100
–200
–300
–400
–500
–25
0
-5 _ppm
+25
+50
+75 +100 +125
+5 ^ppm
Nominal Resistance/
Temperature (RT) Curve
+2.2 ppm/°C
Nominal Chord
Slope (TCR)
–1.8 ppm/°C
Nominal Chord
Slope (TCR)
–55°C / +25°C / +125°C are the test points
with +25°C as the reference temperature
Maximum
Spread
±2.3 ppm/°C
Standard
Spread
±2.0 ppm/°C
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
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)
+ 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
power @ + 70°C for 2000 hours.
• 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
• Terminal Finishes Available:
Lead (Pb)-free (Sn 99.3% Cu 0.7%)
Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)
TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE
VALUE
(Ω)
STANDARD TOLERANCE*
(%)
100Ω to 40KΩ
± 0.01
50Ω to < 100Ω
± 0.05
25Ω to < 50Ω
± 0.1
10Ω to < 25Ω
± 0.25
*Tighter tolerances are available. Please contact Application
Engineering. Soldering temperatures used during installation may
cause resistance to shift up to 0.01%.
TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS
TEST
MIL-PRF-55342G VSM1506
CHARACTERISTIC E MAXIMUM
∆R LIMITS
∆R LIMITS*
Thermal Shock
± 0.10%
± 0.02%
Low Temperature Operation
± 0.10%
± 0.02%
Short Time Overload
± 0.10%
± 0.02%
High Temperature Exposure
± 0.10%
± 0.03%
Resistance to Bonding
± 0.20%
± 0.01%
Moisture Resistance
± 0.20%
± 0.03%
Life 2000 hours @ + 70°C
± 0.50%
± 0.01%
Power @ + 70°C (mW)
100
Maximum Voltage (V)
63
Maximum Weight (mg)
12
*As shown + 0.01 Ohms to allow for measurement errors at low values.
SALES
• ISRAEL: [e-mail] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [e-mail] • AMERICAS: [e-mail]
• ASIA/JAPAN: [e-mail] • UK/HOLLAND/SCANDANAVIA: [e-mail] • GERMANY/CZECH REPUBLIC/AUSTRIA: [e-mail]
www.vishay.com
24
For technical questions in the Americas, contact [e-mail]
Document Number: 63071
For technical questions in Asia/Japan/Europe/Africa/Israel, contact [e-mail]
Revision 17-Aug-04