8G16, 8G24 Series Econistor Precision Wire Wound Resistors
Wire wound resistive element on axial leaded through-hole package
0.33W power rating (8G16D model)
Resistance range 1Ω to 1MΩ (8G16: 1Ω–699kΩ; 8G24: up to 1MΩ)
Ultra-low inductance — balanced multiple-π winding with exclusive air-cushion technique
Virtually stress-free resistive element — full load stability across service life
Axial tinned copper leads — compatible with through-hole PCB assembly
Tolerance options ±0.005%, ±0.01% and ±0.1%
TCR 3 ppm/°C (RARA) / ±5 ppm/°C maximum
Thermal EMF to copper join typically less than 0.4 μV/°C
Operating temperature range −55°C to +160°C
What are the 8G16, 8G24 Series Econistor Precision Wire Wound Resistors?
The 8G16 and 8G24 are precision wire wound resistors in the Econistor axial leaded series, engineered to deliver ultra-high resistance accuracy and exceptional long-term stability across temperature and time. Offering tolerances as tight as ±0.005% and a TCR of 3 ppm/°C, the 8G16/8G24 represent the highest-accuracy tier within RARA Electronics’ precision wire wound portfolio. The 8G16 covers resistance values from 1Ω to 699kΩ, while the 8G24 extends the range up to 1MΩ, together making the series one of the broadest-spanning ultra-precision wire wound families available in an axial through-hole form factor.
Both series are constructed using the highest-quality copper alloy wire, drawn from melts of known resistivity and tightly controlled temperature coefficients. The windings employ a balanced multiple-π configuration combined with an exclusive air-cushion technique that produces virtually stress-free resistive elements. The elimination of mechanical stress from the winding is critical to long-term stability: stressed wire wound elements are prone to resistance drift as internal stresses relax over time and temperature cycling, whereas the stress-free construction of the Econistor series ensures the resistance value remains within specification across the full service lifetime of the component. The balanced winding also minimises self-inductance, keeping reactive impedance negligible in DC and precision low-frequency circuits.
A further distinguishing characteristic of the Econistor series is its exceptionally low thermal EMF at the resistance material-to-copper lead junction, typically below 0.4 μV/°C. In circuits measuring small DC voltages or currents, thermoelectric voltages generated at dissimilar-metal junctions introduce systematic errors that are indistinguishable from the measured signal. The low thermal EMF of the 8G16/8G24 ensures that this error source is kept below the noise floor of all but the most extreme nanovolt-level measurement systems, making the Econistor series appropriate for precision potentiometric and bridge circuits where other wire wound types would introduce detectable thermoelectric artefacts.
The 8G16D model is rated to 0.33W continuous power dissipation, and all leads are tinned copper for straightforward compatibility with standard PCB soldering processes. Custom resistance values across the full range can be produced to order. RARA Electronics holds ISO 9001 and IATF 16949 certifications, and the 8G16/8G24 are manufactured to the same quality standards relied upon by major industrial, instrumentation, and metrology customers globally, including Toshiba, Siemens, Rockwell, LG, and Schneider Electric.
8G16, 8G24 Series Econistor Precision Wire Wound Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: 8G16, 8G24
Resistor type: Precision
Description: Wire wound
Power Rating: 0.33W
Resistance (Ω): 1~1M
Tolerance (%): ±0.005, ±0.01, ±0.1
TCR (ppm/C): 3
Applications of the 8G16, 8G24 Series Econistor Precision Wire Wound Resistors
Where RARA precision resistors are deployed in the field.
Calibration laboratories and national metrology institutes — primary and secondary reference resistance standards requiring the tightest available tolerance and traceability to national measurement standards, where the ±0.005% tolerance of the 8G16/8G24 exceeds the capability of all metal film and most wire wound alternatives
RTD temperature simulation resistors — precision resistance values corresponding to Pt100 and Pt1000 sensor outputs across wide temperature spans, used in the calibration and verification of temperature transmitters, data loggers, and process controllers; standard Pt100 simulation values covering −100°C to +400°C are stocked as catalogue items
Test and measurement instrumentation — LCR meters, resistance decades, precision bridges, and parameter analysers where both initial calibration accuracy and long-term stability under repeated use determine the overall instrument specification
Precision potentiometric and DC voltage measurement circuits — Wheatstone and Kelvin bridge networks, guarded divider chains, and nanovoltmeter input attenuators where the low thermal EMF of the Econistor series prevents thermoelectric offsets from corrupting small-signal measurements
Current and voltage measurement networks — shunt resistor circuits, voltage dividers, and instrumentation amplifier gain-setting networks where a resistance error of 0.005% translates directly into a 0.005% measurement error at system level
Feedback and control networks — op-amp feedback paths, DAC output scaling resistors, ADC reference dividers, and PID controller gain-setting networks where low TCR ensures that gain and offset remain stable across the full operating temperature range of the equipment
Medical instrumentation — patient monitoring equipment, diagnostic analysers, infusion pumps, and imaging systems requiring high-accuracy signal conditioning where any resistance tolerance or drift translates directly into clinical measurement uncertainty
Defence and aerospace electronics — avionics, guidance and navigation systems, and mission-critical signal conditioning circuits where resistors must maintain specification across the full military temperature range of −55°C to +125°C without recalibration
High-stability voltage reference circuits — precision zener and bandgap reference networks, including LTZ1000-class ultra-stable reference designs, where the combination of tight tolerance, ultra-low TCR, low noise, and low thermal EMF is required simultaneously
Industrial automation and process control — transmitter and sensor interface circuits, precision signal conditioning modules, and process analysers where resistance stability over extended field service lifetimes eliminates the need for periodic recalibration
Related Products of the 8G16, 8G24 Series Econistor Precision Wire Wound Resistors
Model: 5G10
Resistor type: Precision
Description: Wire wound
Power Rating: 0.2W
Resistance (Ω): 10~200k
Tolerance (%): ±0.01, ±0.1
TCR (ppm/C): 3
Model: MFD
Resistor type: High precision
Description: Leaded metal film
Power Rating: 1/4W, 1/2W
Resistance (Ω): 10~1M
Tolerance (%): ±0.02, ±0.05, ±0.1
TCR (ppm/C): 5~25
Model: GG102
Resistor type: Precision
Description: Wire wound
Power Rating: 0.3W
Resistance (Ω): 10~250k
Tolerance (%): ±0.01, ±0.1
TCR (ppm/C): 3
Model: TNP10P, TNP20P
Resistor type: Precision
Description: Power film
Power Rating: 10W
Resistance (Ω): 0.1~51k
Tolerance (%): ±0.05, ±1
TCR (ppm/C): 5, 10, 25
Why Choose RARA Precision Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Extreme Accuracy
Tolerances as tight as ±0.005% and TCR as low as 3 ppm/°C — across metal film, thin film chip, wire wound, and MELF construction types to suit every precision circuit requirement.
02
Long-Term Stability
Precision resistors are only useful if they stay accurate. RARA precision types are engineered for extended load life — maintaining resistance within specification over thousands of hours of operation.
03
Full Technology Range
From 1/32W SMD thin film chips to 50W high-power precision wire wound types — one precision resistor family covering every power level and form factor from a single ISO-certified supplier.
04
Global Track Record
Trusted by Toshiba, Siemens, Rockwell, LG, and Schneider Electric — deployed in instrumentation, medical, and industrial measurement systems across six continents.
