5340 Series Precision Calibration Resistors
Precision calibration resistor in leaded through-hole package
0.5W power rating
Resistance range 1mΩ to 1kΩ
Tolerance ±0.01%
TCR 5ppm/°C
Designed as a primary calibration and secondary reference standard
Suitable for metrological, laboratory, and high-accuracy instrumentation use
What are the 5340 Series Precision Calibration Resistors?
The 5340 is a precision calibration resistor engineered to the tightest accuracy requirements in the RARA Electronics precision resistor family. With a tolerance of ±0.01% and a temperature coefficient of resistance (TCR) of 5 ppm/°C, the 5340 is classified as a calibration-grade component — meaning its resistance value is stable and accurate enough to serve as a reference standard against which other resistors, instruments, and measurement systems can be verified. The resistance range spans 1mΩ to 1kΩ, covering the values most commonly required in laboratory and metrological reference applications. Power rating is 0.5W, consistent with a component intended for low-power signal and measurement environments rather than power dissipation duties.
The combination of ±0.01% tolerance and 5 ppm/°C TCR positions the 5340 as a secondary reference standard — a step above general-purpose precision resistors, but complementing the ultra-tight wire wound types (5G10 and 8G16 at ±0.005% and 3 ppm/°C) in the RARA calibration lineup. This makes the 5340 suitable for applications where traceability to national measurement standards is required but the extreme performance of the highest-grade wire wound types is not necessary. The low TCR ensures that the resistance value remains consistent across the operating temperature range of laboratory and metrology environments, where even small deviations in component value would introduce systematic measurement error.
The 5340 is part of a broader RARA precision resistor portfolio spanning metal film, thin film chip, MELF, wire wound, and high-power precision construction types, covering tolerances from ±0.005% to ±1% and TCR values from 3 ppm/°C to 100 ppm/°C. The 5340 occupies the calibration-standard tier of this range, designed specifically for use as a reference element in instrumentation and verification systems. RARA precision resistors are supplied to customers including Toshiba, Siemens, Rockwell, LG, and Schneider Electric, and are deployed in measurement, medical, and industrial applications across six continents.
5340 Series Precision Calibration Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: 5340
Resistor type: Precision
Description: Calibration
Power Rating: 0.5W
Resistance (Ω): 1m~1k
Tolerance (%): ±0.01
TCR (ppm/C): 5
Applications of the 5340 Series Precision Calibration Resistors
Where RARA precision resistors are deployed in the field.
Calibration laboratory reference standards — secondary resistance standards for instrument verification and traceability to national measurement authorities
Metrology and standards equipment — reference elements in precision resistance measurement bridges and comparator circuits
Test and measurement instrument calibration — resistance reference in multimeter, LCR meter, and resistance meter calibration rigs
Current and voltage measurement circuits — shunt resistor networks, Wheatstone bridge circuits, and voltage divider references where resistance error maps directly to measurement error
Instrumentation amplifier input networks — precision gain-setting and reference networks in high-accuracy signal conditioning chains
Op-amp feedback and control networks — feedback resistors, DAC output scaling, and ADC reference dividers requiring stable, accurate gain-setting elements
Medical instrumentation — signal conditioning in patient monitoring equipment, diagnostic analyzers, and laboratory instruments where resistance accuracy affects clinical measurement results
Defense and aerospace electronics — avionics and guidance system reference networks requiring stable performance across extended temperature ranges
Industrial process measurement — precision sensing and feedback elements in industrial control systems where long-term stability under load is required
Related Products of the 5340 Series Precision Calibration Resistors
Model: RMF
Resistor type: Precision
Description: High power 4 terminal
Power Rating: 10W
Resistance (Ω): 0.5~200
Tolerance (%): ±0.1~±5
TCR (ppm/C): 5, 10, 15, 20, 30
Model: 400 Series
Resistor type: High Voltage
Description: Precision, Non-Inductive
Low TCR
Power Rating: 3.8W~20W
Supply voltage: 15kV~90kV
Resistance (Ω): 1k~1T
Tolerance (%): ±0.05 to ±10
TCR (ppm/C): 5, 10, 15, 25, 50, 100
Model: LM
Resistor type: High precision
Description: Plate
Power Rating: 1/8W-1W
Resistance (Ω): 500k~1G
Tolerance (%): ±0.1, ±0.25, ±0.50
TCR (ppm/C): 25, 50, 100
Model: RH/RHF
Resistor type: Precision
Description: High power wire wound
Power Rating: 1W~50W
Resistance (Ω): 1m~600k
Tolerance (%): ±0.01, ±1
TCR (ppm/C): 30, 50, 100
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.
