VFCD1505 Z-Foil Resistors

Ultra-high-precision Z-Foil surface-mount flip chip voltage divider

Image of Vishay Foil Resistors' Ultra-High-Precision Z-Foil Surface-Mount Flip Chip Voltage DividerVishay Precision Group's Bulk Metal® Z-foil (BMZF) technology outperforms all other resistor technologies available today for applications that require ultra high precision and ultra high stability.

The new Z-foil technology provides a significant reduction of the resistive element’s sensitivity to changes of temperature due to ambient temperature variations (TCR) and to self heating when power is applied (power coefficient).

Model VFCD1505 offers low TCR (both absolute and tracking), excellent load life stability, tight tolerance, excellent ratio stability, low thermal EMF and low current noise, all in one package. 0.05 ppm/°C absolute TCR removes errors due to temperature gradients.

The VFCD1505 surface mount divider provides tight tolerance matching and TCR tracking between 2 resistors simultaneously etched on one piece of foil on a common substrate. The electrical specifications of this integrated construction offers improved performances and better real estate utilization over discrete resistors and matched pairs.

Key Benefits
  • Flip chip termination minimizes the board space required
  • The new voltage divider is built on Vishay’s breakthrough "Z- foil" technology, which provides a significant reduction of the resistive component’s sensitivity to ambient applied power changes
  • Almost instantaneous thermal stabilization time of < 1 second
  • Integrated construction offers improved performances and better real estate utilization over discrete resistors and matched pairs
  • Either side of the divider can have a resistance specified from 1 kΩ to 10 kΩ 
  • Vishay Precision Group's resistors are not restricted to standard values, and can be supplied with "as required" values (e.g. 7 kΩ vs. 7.6543 kΩ) at no extra cost or delivery time
  • Screening in accordance with EEE-INST-002 is available (MIL-PRF 55342)
  • Features a non-inductive (< 0.08 µH), non-capacitive design
  • Offers the utmost in ESD immunity, withstanding electrostatic discharges up to 25 kV, for increased reliability
Key Applications
  • High-precision instrumentation amplifiers
  • Bridge networks
  • Differential amplifiers
  • Ratio arms in bridge circuits
  • Medical and test equipment
  • Military
  • Aerospace
Specifications
  • Thermal stabilization time of < 1 second
  • Temperature Coefficient of Resistance (TCR):
    • Absolute
      • ±0.05 ppm/°C from 0°C to +60°C
      • ±0.2 ppm/°C from -55°C to +125°C, +25°C ref.
    • Tracking
      • 0.1 ppm/°C
  • PCR tracking ("ΔR due to self heating") of ±5 ppm at rated power
  • Load life stability ratio of ±0.005% (50 ppm) for 2000 hours at +70°C
  • Tolerance matching of ±0.01% (available down to ±0.005%)
  • ESD immunity up to 25 kV
  • Resistance range from 1 kΩ to 10 kΩ
  • Power rating of 0.1 W at +70°C (divided between the two resistors proportionally to their value)
  • Voltage coefficient of < 0.1 PPM/V
  • Current noise of < -40 dB
  • Thermal EMF of 0.05 µV/°C
  • Rise time of 1.0 ns, effectively without ringing

Z-Foil Surface-Mount Flip Chip

ImageManufacturer Part NumberDescriptionCircuit TypeResistance (Ohms)Available Quantity
Y1685V0001TT9W datasheet linkRES NETWORK 2 RES 10K OHM 1505Y1685V0001TT9WRES NETWORK 2 RES 10K OHM 1505Voltage Divider10k1153 - Immediate
Y1685V0001TT9W product page link
Y1685V0005TT9W datasheet linkRES NETWORK 2 RES MULT OHM 1505Y1685V0005TT9WRES NETWORK 2 RES MULT OHM 1505Voltage Divider5k, 10k106 - Immediate
Y1685V0005TT9W product page link
Published: 2009-02-11