Ultra High Precision Foil Wraparound Surface Mount Chip Resistor

with Extended Pads for High Power/High Temperature Applications

up to +225°C, Load Life Stability of 0.05% ,TCR to ± 1ppm/°C

Document Number: 63211

www.vishayfoilresistors.com

Revision: 20-Mar-12

1

INTRODUCTION

Vishay Foil Resistors (VFR) introduces a new line of Ultra

surface mount chip resistors with extended pads for high

+200 °C).

The new extended pad designs also exhibit better heat

dissipation, thus enabling higher power usage (Working

wraparound termination that ensures safe handling during

the manufacturing process, as well as providing stability

during multiple thermal cyclings.

The FRSH is available in any value within the specified

resistance range. VFR's application engineering department

is available to advise and make recommendations. For

non-standard

technical

requirements

and

special

TABLE 1 - TOLERANCE AND TCR VS.

(- 55 °C to + 200 °C, + 25 °C Ref.)

RESISTANCE

VALUE

(

)

TOLERANCE

(%)

TCR Typical

(ppm/°C)

250

to 125K

± 0.02

±2.5

100

to < 250

± 0.05

50

to < 100

± 0.1

25

to < 50

± 0.25

10 to < 25

± 0.5

Note

,

please contact VFR's application engineering department by

sending an e-mail to the address in the footer below.

FEATURES

 Temperature coefficient of resistance (TCR):

±1 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.)



±2.5 ppm/°C typical (- 55 °C to + 200 °C, + 25 °C

ref.)

 Resistance range: 10 to 125 k(for higher 

and lower values, please contact VFR's

application engineering department)

 Resistance tolerance: to ± 0.02 %

to 330mW at + 200 °C

 Long term stability: to ± 0.05 % at + 225 °C for 2000h,

no power

 Load life stability: to ± 0.05 % at + 200 °C for 2000h, at

working power

 Vishay Foil resistors are not restricted to standard values;

specific "as required" values can be supplied at no extra

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

 Thermal stabilization time < 1 s (nominal value achieved

within 10 ppm of steady state value)

 Electrostatic discharge (ESD) at least to 25 kV

 Non inductive, non capacitive design

 Rise time: 1 ns effectively no ringing

 Current noise: 0.010 µV (RMS)/Volt of applied voltage 

(< - 40 dB)

 Voltage coefficient: < 0.1 ppm/V

 Non inductive: < 0.08 µH

 Non hot spot design

 Terminal finishes available: 

High temperature solder

 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

+200 +225 +250

+175

Ambient Temperature (°C)

+70°C

-55°C