RN73C2A18K7B TE Connectivity Resistor (Resistor Chip) In Stock

Name: RN73C2A18K7B
Brand: TE Connectivity
SKU: RN73C2A18K7B
Availability: InStock

RN73C2A18K7B is a TE Connectivity RN73 thin-film 0805 precision resistor offering 18.7 kΩ at ±0.1% tolerance and ±10 ppm/°C. It dissipates 0.1 W and suits precision instrumentation. In stock with worldwide shipping.

ACTIVEResistorVerified Jul 2026

Package / Visual Reference

RN73C2A18K7BResistor Chip

Quick Facts

Manufacturer: TE Connectivity
Package: Resistor Chip
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: RN73C2A18K7B Datasheet PDF
Category: Resistor
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of RN73C2A18K7B?

18.7 kΩ resistance with ±0.1% tight tolerance ensures high accuracy in precision voltage dividers, bridge circuits, and reference networks
Ultra-low ±10 ppm/°C temperature coefficient minimises resistance drift across the full operating temperature range in instrumentation designs
0.1 W (100 mW) rating in a compact 0805 SMD footprint balances thermal performance with board-space efficiency
Thin-film construction delivers superior long-term stability and lower current noise than equivalent thick-film resistors in measurement-grade circuits

What is RN73C2A18K7B used for?

The RN73C2A18K7B is engineered for precision analog and instrumentation applications — including medical measurement equipment, industrial pressure transducers, precision power supplies, and test-and-measurement instruments — where 18.7 kΩ resistance must hold ±0.1% accuracy over a wide temperature range. Its ±10 ppm/°C TCR minimises resistance shift with temperature, ensuring that factory calibration remains valid across the full operating range without correction. The 0805 SMD format integrates smoothly into dense multilayer PCBs using standard lead-free reflow soldering processes.

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)

Where can I find the RN73C2A18K7B datasheet?

RN73C2A18K7B Datasheet Download

Official datasheet from TE Connectivity

What are equivalent replacements for RN73C2A18K7B?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What resistance value, tolerance, and temperature coefficient does the RN73C2A18K7B offer for precision circuit design?

The RN73C2A18K7B is an 18.7 kΩ thin-film chip resistor with ±0.1% resistance tolerance and ±10 ppm/°C temperature coefficient of resistance (TCR). Over a 50 °C temperature swing this TCR limits resistance change to under 10 Ω, keeping voltage divider ratios and feedback network gains well within the precision budget of most instrumentation-grade analog designs.

Which precision measurement and bridge circuits benefit most from the RN73C2A18K7B's thin-film accuracy?

Wheatstone bridge circuits in industrial pressure and strain transducers, precision op-amp feedback networks in medical instrumentation, and ADC voltage reference dividers in test equipment all gain from the RN73C2A18K7B's ±0.1% tolerance and ±10 ppm/°C TCR. For applications where resistor drift must remain below 50 ppm over the operating range, the RN73 thin-film series is significantly more reliable than standard thick-film alternatives.

How does the thin-film RN73C2A18K7B compare to a thick-film 0805 resistor of the same 18.7 kΩ value?

Thin-film construction in the RN73C2A18K7B achieves ±0.1% tolerance and ±10 ppm/°C TCR, while typical thick-film 0805 resistors are rated ±1% with TCR values of 100 ppm/°C or higher. Across a 50 °C temperature span, the thick-film device may drift by up to 94 Ω compared to under 10 Ω for the RN73C2A18K7B, a difference that directly affects ADC accuracy and bridge balance in precision measurement systems.

When is the RN73C2A18K7B preferred over a 0.1% tolerance through-hole metal-film resistor in a new PCB design?

The RN73C2A18K7B is the preferred choice when the PCB uses a reflow-only SMT assembly process, as its 0805 footprint eliminates the selective soldering or manual insertion step required for through-hole parts. Its ±10 ppm/°C TCR also typically outperforms the 50 ppm/°C to 100 ppm/°C specification common in through-hole metal-film resistors, providing better temperature stability in precision analog signal chains at the same 0.1 W power rating.

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