Vishay Foil Resistors FRSM 303261 Series

  • VFR

Product Features

  • Ultra high precision FRSM wrap-around chip resistor
  • EEE-INST-002 and MIL-PRF-55342 tested for space and military applications
  • 0603 package size
  • Voltage rating of 14V
  • Excellent stability, noise and ESD withstanding properties
  • Non-inductive: 0.08µH
  • Tin/lead alloy terminations
  • Aerospace


  • Aerospace
  • Test and Measurement
  • Non-compliant


This FRSM ultra high precision resistor series from VFR is tested to EEE-INST-002 and MIL-PRF-55342, specifically for space and military applications. The 303261 series offers a resistance range between 100Ω and 2kΩ, in a small 0603 surface-mount package with wrap-around terminations. These resistors utilise VFR’s newest Z-1 Bulk Metal® foil resistor technology for improved load life stability (up to 25ppm) and higher working temperatures (balanced temperature characteristics over a range from -55°C to +150°C). They have nominal temperature coefficients of resistance of ±0.2ppm/°C typical between -55°C to +125°C (+25°C reference) with tolerances available down to ±0.01% between 250Ω and 2kΩ.

  • Ultra-high precision wrap-around bulk foil chip resistor
  • EEE-INST-002 and MIL-PRF-55342 tested for space and military applications
  • Available in any resistance between 100Ω and 2kΩ
  • 0603 package
  • Tolerances as low as ±0.01% over the resistance range of 250Ω up to 2kΩ
  • Power coefficient “ΔR due to self-heating” of 5ppm at rated power
  • TCR as low as ±0.2ppm/°C between -55° and +125°C, +25°C ref.
  • Voltage rating 14V
  • Power rating of 0.05W at +70°C
  • Load life stability of ±0.02% after 2000h at 70°C at rated power
  • Thermal stabilization time <1s (nominal value achieved within 10ppm of steady-state value)
  • Electrostatic discharge (EDS) of at least to 25kV
  • Short time overload of ≤0.005% typical
  • Rise time as low as 1ns, effectively no ringing
  • Current noise of <0.010µVRMS/V of applied voltage (<-40dB)
  • Non-hot spot design
  • Terminal finishes available: tin/lead alloy


Non-standard technical requirements such as resistance outside of the standard range, higher temperature application up to 240°C or better performance characteristics are available upon request. Please contact us for further information and availability.


The below table gives full specifications for each resistor model available including the 303261 series:

FRSM Z-1 resistors` Specifications



Weight 0.00400 kg
Dimensions 1.60 × 0.81 × 0.64 mm
Minimum Resistance

Maximum Resistance

Series / Model


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Power Rating

Resistance Value


Temperature Coefficient




Package / Size

Vishay Foil Resistors FRSM 303261 Series

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