Top View

(for date code print specification please refer to table 2)

Ultra High Precision Foil Wraparound Surface Mount Chip Resistor

with TCR of ± 0.05 ppm/°C and Power Coefficient of 5 ppm at

Rated Power and Load Life Stability of ± 0.005 % (50 ppm)

VSMP Series (0603, 0805, 1206, 1506, 2010, 2018, 2512) (Z-Foil)

Vishay Foil Resistors

Document Number: 63060

www.vishayfoilresistors.com

Revision: 29-Oct-2012

1

INTRODUCTION

VSMP Series is the industry’s first device to provide high

rated power and excellent load life stability along with

extremely low TCR — all in one resistor.

One of the most important parameters influencing stability is

the Temperature Coefficient of Resistance (TCR). Although

the TCR of foil resistors is considered extremely low, this

characteristic has been further refined over the years. The

The Z-Foil technology provides a significant reduction of the

resistive element’s sensitivity to ambient temperature

variations (TCR) and to self heating when power is applied

(Power Coefficient of Resistance, or PCR). Along with the

inherently low PCR and TCR, Z-Foil technology also

provides remarkably improved load life stability, low noise

and tight tolerances.

The VSMP resistor has a full wraparound termination which

assures secure contact during the manufacturing process,

as well as providing stability during multiple thermal cyclings.

Vishay Foil Resistors' (VFR) application engineering

department

is

available

to

advise

and

make

recommendations. For non-standard technical requirements

and special applications, please contact VFR using the

e-mail address in the footer below.

TABLE 1 - TOLERANCE AND TCR VS.

(- 55 °C to + 125 °C, + 25 °C Ref.)

RESISTANCE

VALUE

(

)

TOLERANCE

(%)

TYPICAL TCR AND

MAX. SPREAD

(ppm/°C)

250

to 125K

± 0.01

± 0.2 ± 1.8

100

to < 250

± 0.02

± 0.2 ± 1.8

50

to < 100

± 0.05

± 0.2 ± 2.8

25

to < 50

± 0.1

± 0.2 ± 3.8

10

to < 25

± 0.25

± 0.2 ± 3.8

5 to < 10

± 0.5

± 0.2 ± 7.8

Note

5

 and above 125K, please contact VFR’s application

engineering using the e-mail addresses in the footer below

FEATURES

 Temperature coefficient of resistance (TCR):

0.05 ppm/°C typical (0 °C to + 60 °C)



0.2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.)

 Resistance tolerance: to ± 0.01 %

 Power coefficient “R due to self heating”:

5 ppm at rated power

 Power rating: to 750 mW at + 70 °C (see table 3)

 Load life stability: to ± 0.005 % at 70 °C, 2000 h at rated

power

 Resistance range: 5 to 125 k (for lower or higher

values, please contact us)

 Vishay Foil resistors are not restricted to standard values,

we can supply specific “as required” values at no extra cost

or delivery (e.g. 1K2345 vs. 1K)

(nominal value achieved within 10 ppm of steady state

value)

 Electrostatic discharge (ESD) at least to 25 kV

 Short time overload:  0.005 %

 Non inductive, non capacitive design

 Rise time: 1 ns effectively no ringing

(< - 40 dB)

 Voltage coefficient < 0.1 ppm/V

 Non inductive: < 0.08 µH

 Non hot spot design

 Terminal finishes available: lead (Pb)-free, tin/lead alloy

 Matched sets are available on request

 Prototype quantities available in just 5 working days

or sooner. For more information, please contact

foil@vishaypg.com

FIGURE 1 - POWER DERATING CURVE

100

75

50

25

0

- 75

- 50

- 25

0

+ 25

+ 50

+ 75 + 100 + 125 + 150 + 175

Ambient Temperature (°C)

+ 70 °C

- 55 °C

* Pb containing terminations are not RoHS compliant; exemptions

may apply