RT1210FRD072K43L YAGEO 2.43kΩ 0.5W Chip Resistor

ElecSuppliers Part Number GuideAug 22, 2026

RT1210FRD072K43L is a YAGEO RT series thick film chip resistor with a resistance of 2.43 kΩ, tolerance of ±1% and rated power of 0.5 W. The component uses the 1210 surface-mount package and is designed for electronic circuits requiring stable resistance and moderate power handling in a compact PCB footprint.

The RT series is widely used for general-purpose and automotive electronic applications, with multiple resistance values, tolerances and package sizes available. The RT1210FRD072K43L configuration combines the 1210 package with a relatively uncommon 2.43 kΩ resistance value, providing an option for circuits that require a specific resistance rather than a standard rounded value.

RT1210FRD072K43L Key Specifications

RT1210FRD072K43L has a nominal resistance of 2.43 kΩ and a tolerance of ±1%. Its rated power is 0.5 W, while the resistance temperature coefficient is specified at ±100 ppm/°C.

The component uses a 1210 package, which is approximately 3.2 mm × 2.5 mm in imperial dimensions. Compared with smaller 0603 or 0805 resistors, the 1210 package provides more PCB area and generally offers better power-handling capability.

The specified operating temperature range is -55°C to +155°C, providing a relatively wide temperature range for industrial and automotive electronics.

2.43kΩ 1% Thick Film Resistor

The 2.43 kΩ resistance value can be useful in voltage-divider, feedback, biasing and current-limiting circuits where a standard 2.4 kΩ or 2.49 kΩ resistor would not provide the required electrical characteristics.

The ±1% tolerance provides tighter resistance accuracy than a typical ±5% general-purpose resistor. This can be important in analog circuits, sensing circuits and control systems where the resistance value directly affects the operating point.

The ±100 ppm/°C temperature coefficient describes the expected resistance change as temperature changes. For precision applications, engineers should consider the combined effects of initial tolerance, temperature coefficient, operating temperature and long-term resistance drift.

RT1210FRD072K43L Power Rating

The 0.5 W power rating makes RT1210FRD072K43L suitable for applications where a small resistor needs to dissipate more power than a typical 1/8 W or 1/4 W chip resistor.

However, the 0.5 W specification should be treated as a rated maximum under defined conditions rather than a guaranteed continuous operating point in every PCB design.

Actual resistor temperature depends on PCB copper area, board material, ambient temperature, component spacing and surrounding heat sources. Engineers should use the manufacturer's power derating characteristics when the resistor operates at elevated temperatures.

For example, if the resistor is used continuously close to its maximum rated power, additional thermal margin may be required to maintain reliability over the intended service life.

RT1210FRD072K43L Applications

RT1210FRD072K43L can be used in automotive electronics, industrial control systems, power management circuits, signal conditioning, voltage dividers and general-purpose electronic equipment.

The 2.43 kΩ value is useful when a circuit has been designed around a specific resistance ratio. In a voltage-divider circuit, for example, changing from 2.43 kΩ to a nearby standard value can alter the resulting output voltage.

The 1210 package also makes the resistor suitable for PCB assemblies where moderate power dissipation and compact surface-mount construction are both required.

RT1210FRD072K43L Package and PCB Design

The 1210 package provides a larger physical footprint than common 0603 and 0805 chip resistors. This can be advantageous for thermal management because more PCB copper can be used around the component to help dissipate heat.

During PCB layout, the recommended land pattern should be followed to ensure reliable soldering. Excessively small pads can make assembly more difficult, while unnecessarily large pads may affect thermal behavior and solder-joint formation.

The component is supplied as a surface-mount resistor, making it compatible with standard automated pick-and-place and reflow soldering processes.

RT1210FRD072K43L Automotive and Industrial Use

The RT series is available in configurations intended for demanding applications, including automotive electronics. For applications that require automotive-qualified components, the exact manufacturer qualification and ordering code should always be verified rather than assuming that every RT series resistor has identical qualification status.

In automotive control units, resistors can be found throughout power supplies, sensor interfaces, communication circuits and control logic. A 1210 resistor rated for 0.5 W can be useful in locations where electrical or thermal stress is higher than that encountered by small signal resistors.

Industrial equipment can have similar requirements, particularly where electronic assemblies operate over a wide temperature range or are exposed to continuous electrical loading.

RT1210FRD072K43L Replacement Considerations

When replacing RT1210FRD072K43L, the key parameters are the 2.43 kΩ resistance, ±1% tolerance, 0.5 W power rating, 1210 package and required temperature characteristics.

A replacement with the same resistance but a lower power rating may not be suitable. Likewise, replacing the 1210 component with a smaller package can change the thermal behavior of the circuit even when the electrical resistance is identical.

For automotive applications, the replacement's qualification status should also be verified.

The complete RT1210FRD072K43L ordering code should therefore be used during procurement to avoid selecting a visually similar resistor with different electrical or reliability characteristics.

RT1210FRD072K43L for Precision Resistance Requirements

RT1210FRD072K43L combines a 2.43 kΩ resistance value, ±1% tolerance and 0.5 W rated power in a 1210 surface-mount package.

The component is a practical choice when a circuit requires a specific resistance value with moderate power capability. Its relatively wide operating temperature range also makes the 1210 RT series suitable for many industrial and automotive electronic designs.

For new designs, engineers should evaluate resistance tolerance, temperature coefficient, power dissipation and PCB thermal conditions together. For replacement applications, matching the complete RT1210FRD072K43L specification helps maintain the original circuit's electrical and mechanical performance.