Precision Foil Chip Resistor

The RESI PZFR Series is a precision foil chip resistor based on Z1 foil resistor technology, designed for applications requiring extremely stable resistance performance. The series is manufactured with foil material bonded to a ceramic substrate using a specialist bonding material, helping compensate for resistance changes caused by temperature variation and enabling ultra-low TCR performance. With a resistance range from 5Ω to 125kΩ, rated power from 0.1W to 0.75W, tightest tolerance of ±0.01% and TCR of ±2 ppm/℃, the PZFR Series is suitable for precision circuits where drift, tolerance and long-term stability are critical. Load life stability is specified at ±0.0025%, with operation from −55°C to +175°C. The resistor is laser trimmed to achieve tight tolerance and is designed to minimise common causes of resistance instability. With foil technology, low inductance and high insulation voltage, the PZFR Series is suitable for advanced electronic systems requiring stable resistance values over time.

Key Features

• Precision foil chip resistor technology
• Based on Z1 foil resistor technology
• Resistance range: 5Ω to 125kΩ
• Rated power: 0.1W to 0.75W
• Tightest tolerance: ±0.01%
• TCR: ±2 ppm/℃
• Load life stability: ±0.0025%
• Operating voltage: 22V to 220V
• Inductance: 0.08μH
• Insulation voltage: 25kV
• Size range: 0603 to 2512
• SMD/SMT mounting
• Operating temperature range: −55°C to +175°C
• RoHS compliant

Application Industries and Use Cases

• Precision Instrumentation: Ultra-stable resistance for measurement, calibration and reference circuits.
• Test & Measurement: High-accuracy resistor networks for laboratory, validation and data acquisition systems.
• Industrial Control: Stable analogue control circuits where low drift and tight tolerance are required.
• Robotics & Automation: Precision sensor feedback, motion control and signal conditioning circuits in compact control electronics.