The FRSM ultra high precision resistor series from VFR offers a resistance range between 5Ω and 8kΩ, all in a small 0805 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 more than 175°C). They have nominal temperature coefficients of resistance of ±0.05ppm/°C typical between 0°C to +60°C and ±0.2ppm/°C typical between -55°C to +125°C (+25°C reference) with tolerances available down to ±0.01% between 250Ω and 8kΩ.
The FRSM Z1 ultra high precision resistor series is also available as EEE-INST-002 compliant for space use. Please see the separate FRSM EEE (space qualified) product pages for further information.
Non-standard technical requirements such as resistance outside of standard range, lower tolerance or TCR 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 FRSM0805 series:
| Weight | 0.00600 kg |
|---|---|
| Dimensions | 0.64 x 1.27 x 2.03mm |
| Maximum Resistance | 8kΩ |
| Minimum Resistance | 5Ω |
| Package / Size | |
| Packaging | Tape & Reel, Waffle Pack |
| Power Rating | |
| Resistance Value | Custom (5Ω – 10Ω), Custom (10Ω – 25Ω), Custom (25Ω – 50Ω), Custom (50Ω – 100Ω), Custom (100Ω – 250Ω), Custom (250Ω – 8kΩ) |
| Series / Model | |
| Temperature Coefficient | |
| Termination / Connection | Pb (Lead) free, Standard |
| Tolerance |
| SKU | Packaging | Resistance Value | Termination / Connection | Tolerance |
|---|---|---|---|---|
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.02% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.02% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±0.02% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±0.02% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.05% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.05% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±0.05% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±0.05% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.1% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.1% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±0.1% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±0.1% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.5% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±0.5% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±0.5% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±0.5% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Pb (Lead) free | ±1% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Pb (Lead) free | ±1% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (100Ω - 250Ω) | Standard | ±1% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (100Ω - 250Ω) | Standard | ±1% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (10Ω - 25Ω) | Pb (Lead) free | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (10Ω - 25Ω) | Pb (Lead) free | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Tape & Reel | Custom (10Ω - 25Ω) | Standard | ±0.25% |
| Vishay Foil Resistors FRSM0805 Series | Waffle Pack | Custom (10Ω - 25Ω) | Standard | ±0.25% |
| Product name | SKU | Datasheet | ||
|---|---|---|---|---|
| VFR FRSM 303261 Series | VFR FRSM 303261 | View Product | |
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| VFR FRSM 303262 Series | VFR FRSM 303262 | View Product | |
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| VFR FRSM 303263 Series | VFR FRSM 303263 | View Product | |
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| VFR FRSM 303264 Series | VFR FRSM 303264 | View Product | |
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| VFR FRSM 303265 Series | VFR FRSM 303265 | View Product | |
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| VFR FRSM 303266 Series | VFR FRSM 303266 | View Product | |
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| VFR FRSM0603 Series | VFR FRSM0603 | View Product | |
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| VFR FRSM0805 Series | VFR FRSM0805 | View Product | |
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| VFR FRSM1206 Series | VFR FRSM1206 | View Product | |
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| VFR FRSM1506 Series | VFR FRSM1506 | View Product | |
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| VFR FRSM2010 Series | VFR FRSM2010 | View Product | |
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| VFR FRSM2512 Series | VFR FRSM2512 | View Product |
We are very pleased to provide you with a range of videos, please see below for the latest content available.
| VIDEOS | |
|---|---|
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Bulk Metal® Foil Resistors
Bulk Metal® Foil resistors, developed by Dr. Felix Zandman in 1962, are the gold standard for the electronic industry. With essentially zero TCR, zero PCR and extremely robust construction, they are the logical choice for all applications requiring unquestioned reliability and stability. |
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Resistor Stability Put to the Test (Demo Video)
In this video, host Richard Zuratt from VPG puts the stability of the three major resistor technologies — foil, thin, and thick film — to the test. Each resistor type is subjected to an overload pulse and its change in resistance value is recorded. Due to the homogeneous nature of the VPG Bulk Metal® Foil resistor, it is the only of the three to experience no change from the high power pulse. This demonstrated performance makes foil resistors the technology of choice for critical applications where long-term stability and survivability are paramount. |
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|
A head to head comparison of the survival rates of precision thin film nichrome (NiCr) resistors versus VFR Bulk Metal Foil resistors in a high humidity environment.
All resistors that are based on nichrome, which is a category that includes both thin film devices and Bulk Metal Foil resistors, are susceptible to electro-chemical corrosion or etching when placed in a high humidity environment and powered with a very low wattage. But since the nichrome element of a Bulk Metal Foil resistor is hundreds of times thicker than the element in a thin film device with the same value, it will last much longer under these conditions. This video shows the actual etching process and survival times for thin film and foil nichrome resistive elements as they are tested in 100% humidity conditions. |
| VIDEOS | |
|---|---|
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|
| Bulk Metal® Foil Resistors
Bulk Metal® Foil resistors, developed by Dr. Felix Zandman in 1962, are the gold standard for the electronic industry. With essentially zero TCR, zero PCR and extremely robust construction, they are the logical choice for all applications requiring unquestioned reliability and stability. |
|
|
|
|
| Resistor Stability Put to the Test (Demo Video)
In this video, host Richard Zuratt from VPG puts the stability of the three major resistor technologies — foil, thin, and thick film — to the test. Each resistor type is subjected to an overload pulse and its change in resistance value is recorded. Due to the homogeneous nature of the VPG Bulk Metal® Foil resistor, it is the only of the three to experience no change from the high power pulse. This demonstrated performance makes foil resistors the technology of choice for critical applications where long-term stability and survivability are paramount. |
|
|
|
|
| A head to head comparison of the survival rates of precision thin film nichrome (NiCr) resistors versus VFR Bulk Metal Foil resistors in a high humidity environment.
All resistors that are based on nichrome, which is a category that includes both thin film devices and Bulk Metal Foil resistors, are susceptible to electro-chemical corrosion or etching when placed in a high humidity environment and powered with a very low wattage. But since the nichrome element of a Bulk Metal Foil resistor is hundreds of times thicker than the element in a thin film device with the same value, it will last much longer under these conditions. This video shows the actual etching process and survival times for thin film and foil nichrome resistive elements as they are tested in 100% humidity conditions. |
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