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The Vishay Precision Group Foil Resistors portfolio is comprised of discrete resistors and resistor networks in surface mount and through-hole (leaded) configurations, precision trimming potentiometers, and discrete chips for use in hybrid circuits. Bulk Metal® foil technology, first introduced by Vishay in 1962, still out-performs all other resistor technologies available for applications that require precision and stability. Vishay Precision Group's unique, ultra-precision Bulk Metal foil resistor products provide extremely low temperature coefficient of resistance (TCR) and exceptional long-term stability through temperature extremes.




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Vishay Precision Group Featured Products

Vishay Precision Group VCS101 Series Current Sensing Resistors

Vishay Precision Group's VCS101 Series Current Sensing Resistors are Bulk Metal® resistors that can serve as a low ohm, high power resistive shunt or as a medium power current sensing resistor. Features of the VCSxxx Series Current Sensing Resistors from Vishay Precision Group include TCR of ±20ppm/ºC, resistance range of 0.005Ω to 0.25Ω (higher values available), maximum operating temperature of 175ºC, 4 leads for Kelvin connection, maximum current of 15A, and power rating to 1.5W at +25ºC (free air).

Vishay Precision Group SMNZ (Z-Foil) Series Resistor Network

Vishay Precision Group's SMNZ Z-Foil Resistor Network consists of 4 independent Bulk Metal®Z-Foil resistors in a small standard molded epoxy package with 50 MIL lead pitch (JEDEC MS-012 package). Features of the SMNZ Series Resistor Network from Vishay Precision Group include extremely low TCR (absolute and tracking), excellent load life stability, tight tolerance (absolute and matching), excellent ratio stability, low current noise, low voltage coefficient, and non-sensitivity to ESD - all in the same resistor.

Vishay Precision Group S Series Bulk Metal®Foil Resistors

Vishay Precision Group's S Series Resistors were constructed with Vishay's Bulk Metal® Foil (BMF) technology that exhibits better performance than all other resistor technologies available today for applications that require high precision and high stability. The S resistor series from Vishay Precision Group is virtually insensitive to destabilizing factors and its solid alloy construction offers the desirable bulk properties of its parent material, making it intrinsically stable and noise-free. Features of the S Series Foil Resistors include low TCR, excellent load life stability, tight tolerance, fast response time, low current noise, low thermal EMF and low voltage coefficient.

Vishay Precision Group VCS1625Z Series Current Sensing Resistors

Vishay Precision Group's VCS1625Z Series Current Sensing Resistors are ultra high precision Z-Foil surface mount resistors with TCR of ±0.05ppm/ºC and power coefficient of 5ppm at rated power. VCS1625Z Series Current Sensing Resistors from Vishay Precision Group also feature resistance range of 0.3Ω to 10Ω, power rating of 0.5W at +70ºC, current rating up to 5A maximum, and electrostatic discharge (ESD) up to 25,000V. Applications that utilize VCS1625Z series current sensing resistors include military, medical, automatic test equipment (ATE), airborne (in heads-up display systems), high precision instrumentation, and electron beam recording equipment.

Vishay Precision Group DSMZ Series Voltage Dividers (Z-Foil)

Vishay Precision Group's DSMZ Series Voltage Dividers are surface mount dividers that provide a matched pair of Bulk Metal® Z-Foil Resistors in a small epoxy molded package, an integrated construction that provides improved performance and better real estate utilization over discrete resistors and matched pairs. The DSMZ Series from Vishay Precision Group offers low TCR(both absolute and tracking), low PCR, excellent load life stability, tight tolerance match, excellent ratio stability, low thermal EMF, and low current noise - all in one package. Other DSMZ Series features include resistance range of 100Ω to 10kΩ per resistor, TCR tracking of <0.1ppm/ºC, PCR of ±5ppm at rated power and stability of ±0.005%(50ppm).

Vishay Precision Group SMR1DZ/SMR3DZ Series Z-Foil Resistors

Vishay Precision Group's SMR1DZ/SMR3DZ Series Z-Foil Resistors are ultra high precision, molded surface mountable resistors that offer low TCR, tight tolerance, and long-term stability. The SMR1DZ/SMR3DZ Series resistors from Vishay Precision Group utilize ultra high precision Bulk Metal® Z-Foil technology that provides a significant reduction of the resistor's sensitivity to ambient temperature variations (TCR) and to self heating when power is applied (power coefficient). Features of SMR1DZ/SMR3DZ Series Resistors include resistance range of 5Ω to 80kΩ, tolerance to ±0.01%, flexible terminations, TCR down to ±0.05ppm/ºC, low noise, low thermal EMF, and load life stability of ±0.005% (50ppm).

Vishay Precision Group/Foil Resistors Accutrim™1260 Series Trimming Potentiometers

Vishay Precision Group/Foil Resistor Accutrim™1260 Series (RJ24 Style) Trimming Potentiometers from s incorporate the Bulk Metal® Foil resistive element which possesses a unique inherent temperature and load-life stability. The 3/8" square, ultra-high precision 1260 series trimming potentiometers from Vishay Precision Group/Foil Resistors offer a resistance range of 5Ω to 10kΩ, resistance tolerances of ±5% and ±10%, electrostatic discharge (ESD) up to 25,000V, power rating of 0.25W at +85ºC, and an "O"-ring which prevents ingress of fluids during any board cleaning operation. VPG/Foil Resistors trimmers have an advanced, virtually backlash-free adjustment mechanism that makes them easy to set quickly and accurately.

Vishay Precision Group/Foil Resistors Accutrim™1240 Series Trimmers

Vishay Precision Group/Foil Resistors Accutrim™1240 Series (RJ26 Style) Trimming Potentiometers have the Bulk Metal® Foil resistive element which possesses a unique inherent temperature and load-life stability. In addition, the ultra high-precision, 1/4" square 1240 series trimmers feature an advanced, virtually backlash-free adjustment mechanism for easy and accurate set-up that remains stable. Features of 1240 series trimming potentiometers include resistance range of 5Ω to 10kΩ, power rating of 0.25W at +85ºC, electrostatic discharge (ESD) up to 25,000V, and smooth, unidirectional resistance with leadscrew adjustment. The 1240 series trimmers were designed to meet the requirements of MIL-PRF-39035, Char H.

Vishay Precision Group/Foil Resistors CSM High Precision Resistors

Vishay Precision Group/Foil Resistors CSM Series Resistors offer Bulk Metal® Technology and high precision. The surface mount CSM Series Resistors from Vishay Precision Group/Foil Resistors have a resistance range of 1mΩ to 200mΩ, resistance tolerance of ±0.1%, rated power up to 3W, maximum current up to 54A, and maximum temperature coefficient of resistance (TCR) of ±15ppm/ºC (-55ºC to +125ºC, +25ºC ref.) In addition, when compared to typical current sense resistors, CSM series resistors offer an improved load-life stability of ±0.2% at +70ºC for 2000 hours at rated power as opposed to the ≥1% per 2000 hour workload offered by other current sense resistors. As a result, CSM series resistors are ideal for tightened-stability voltage division and precision current sensing applications in switching linear power supplies, power amplifiers, measurement instrumentation, bridge networks, and medical and test equipment.

Vishay Precision Group Z201 Series Z-Foil Resistor

Vishay Precision Group's Z201 Series Z-Foil Resistor is an improved version of earlier models of Bulk Metal® Foil Resistors. The Ultra High Precision Z201 Series Z-Foil Resistor from Vishay Precision Group has a TCR slope of 0.2 ppm/ºC (-55ºC to +125ºC, +25ºC ref.) and offers improved characteristics over the original S102C Series. The Z-Foil technology incorporated into Z201 Series Resistors provides a significant reduction of the resistive component's sensitivity to ambient temperature variations (TCR) and applied power changes (PCR). Features of Z201 Series Resistors include resistance tolerance to ±0.005%; rated power of 0.6W at 70ºC, 0.3 W at 125ºC; resistance range of 10Ω to 100kΩ; temperature coefficient of resistance (TCR): ±0.05 ppm/ºC typical (0ºC to +60ºC), ±0.2 ppm/ºC typical (-55ºC to +125ºC, +25ºC ref.); and power coefficient of resistance "ΔR due to self heating": ±5ppm at rated power.

Vishay Precision Group VSMP Series Resistors

Vishay Precision Group's VSMP Series Z-Foil Wraparound SMD Chip Resistor, available in case sizes 0603, 0805, and 1206, is the industry's first device to provide high rated power, excellent load life stability, and extremely low TCR in one resistor. The VSMP Series Z-Foil Wraparound SMD Chip Resistor from Vishay Precision Group uses ultra high precision Bulk Metal®Z-foil technology that 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). The Z-foil technology incorporated into the VSMP Series resistors also provides improved load life stability, low noise, and availability of tight tolerance. VSMP Series Z-foil resistors have a full wraparound termination which ensures safe handling during the manufacturing process and provides stability during multiple thermal cyclings. Features of VSMP Series Foil Wraparound SMD Chip Resistors include TCR of 0.05 ppm/ºC typical (0ºC to +60ºC), 0.2 ppm/ºC typical (-55ºC to +125ºC, +25ºC ref.); load life stability to ±0.005% at 70ºC, 2000 hours at rated power; resistance range: 100Ω to 5kΩ (case size 0603) and 10Ω to 125kΩ (case sizes 0805, 1206); tolerance to ±0.01%; power coefficient "ΔR due to self heating":5ppm at rated power; and power ratings to 750mW at +70ºC(case sizes 0805, 1206) and to 100mW at +70ºC (case size 0603).

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