Charcroft Z-Foil and S-Foil Resistors
We all know the fantastic Vishay range of bulk foils, but we now have something much better - the CAR resistor. Composed of Vishay’s Bulk Metal™ Z-foil technology, it offers improved sound quality and combines low noise with low inductance/capacitance, making it unrivalled for applications requiring low noise and distortion-free performance. This unique "naked Z-foil resistor" design, without a case or encapsulation, adds dimensionality to reduce signal distortion and increase clarity in signal processing.
These resistors are handmade in the UK. You may feel they carry a high price tag, but discerning DIYers do not think twice about spending similar amounts on capacitors. Well, resistors are just as important. Hi-fi Collective is proud to be the first to bring you the fantastic Charcroft Audio Resistor.
NEW!!! - we now have stock of the CARS from Charcroft. These are available in values over 100K, built on the same size chip as the CAR resistors. The CARS are S-foils rather than Z-foils. The S-foils use two different alloy types, C and K. The TCR of C foil decreased with increasing temperature, whilst the K foil increased. Over the full temperature range of -55 to +125 C, the S-foils vary by +-2.0ppm/C. The latest generation Z-foils have a TCR variation of only ±0.2 ppm/C over -55 to +125 °C, which is a factor of 10 times more stable. Also, note that the power rating of the CARS and S-foils is 0.25W, with a tolerance of 0.1% - available in 120K, 150K, 180K, and 220K.
Specification:
- Temperature coefficient of resistance (TCR) - 55°C to + 125°C, 25°C ref.:± 0.2 ppm/°C typical
- Rated power: to 0.4 W at + 70°C
- Tolerance: to ± 0.1 %
- Resistance range: 10ohm to 100K
- Non-inductive, non-capacitive design
- Non-hot spot design
- Current noise: < - 40 dB
- Rise time: 1 ns without ringing
- Electrostatic discharge (ESD) above 25 000 V
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PRICES (1 off)
2R to 4R7 - £32.02 +vat +p&p
5R1 to 9R1 - £22.35 +vat +p&p
10R to 100R - £18.50+vat +p&p
110R to 9K1 - £15.25 +vat +p&p
10K to 47K - £17.50+vat +p&p
50K to 100K - £28.70 +vat +p&p