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Document Number: 63061

Revision 17-Aug-04

www.vishay.com

22

VSM0805

Vishay Foil Resistors

• 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

SALES

Bulk Metal

Discrete Surface Mount Chip Resistors

MIL-PRF-55342G

VSM

TEST

CHARACTERISTIC. E

MAXIMUM

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%

± 0.05%

Resistance to Bonding

± 0.20%

± 0.05%

Moisture Resistance

± 0.20%

± 0.10%

Life 2000 hours @ + 70

± 0.50%

± 0.025%

The VSM0805 represents the latest addition and smallest size

to the Precision Bulk Metal

mount chip resistor series. The VSM0805 has a conventional

full wrap around termination.

The BMF technology offers designers the lowest and most

predictable absolute Temperature Coefficient Resistance

available. The TCR is a process capability not a selection

process and for the most part is independent of ohmic value

and lot related variations.

The availability of tight absolute tolerance provides a good cost

solution for the variability of other components when compiling

the total error budget. BMF offers the best stability available;

and is an order of magnitude better than thin film technology.

The noise generated by the resistor is non measurable and its

design and construction make it well suited for high frequency

applications. The BMF is the ultimate resistor component for

analog applications.

VALUE

TIGHTEST

(

TOLERANCE (%)*

250Ω to 12K

± 0.01

100Ω to < 250

± 0.02

50Ω to < 100

± 0.05

25Ω to < 50

± 0.1

10Ω to < 25

± 0.25

5.5Ω to <10

± 0.5

FEATURES

• Nominal TCR: + 0.6ppm/°C (0 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)

• Absolute Tolerance: to ± 0.01%

• Resistance Range: 5.5Ω to 12K

• Load Life Stability: ± 0.025% (2000 hours @ 70°C)

• Shelf Life Stability: 0.005% Maximum ∆R

• Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V)

• Current Noise: < - 40dB

• Non Inductive: < 0.08µH

• Terminal Finishes Available:

Lead (Pb)-free (Sn 99.3% Cu 0.7%)

Tin/Lead Alloy (Sn 62% Pb 36% Ag 2%)

*As shown + 0.01 Ohms to allow for measurement errors at low values.

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

TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE

*Tighter tolerances are available.

Please contact Application

Engineering. Soldering temperatures used during installation may

cause resistance to shift up to 0.05%.

TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS

FIGURE 1 - NOMINAL TCR CURVE

Product may not

be to scale

Maximum

Spread

±2.3 ppm/°C

+125

–55

–50

–25

0

+25

+50

+75

+100

+500

+400

+300

+200

+100

0

–100

–200

–300

–400

–500

Standard

Spread

±2.0 ppm/°C

+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

∆R

R

(ppm)

Nominal Resistance/

Temperature (RT) Curve

+5

ppm

-5 ppm