RN73C2A3K74B TE Connectivity Resistor (Resistor Chip) In Stock

Name: RN73C2A3K74B
Brand: TE Connectivity
SKU: RN73C2A3K74B
Availability: InStock

The TE Connectivity RN73C2A3K74B is a 3.74 kΩ thin-film precision surface-mount resistor in an 0805 package, rated at 0.1 W with ±0.1% tolerance and ±10 ppm/°C temperature coefficient. It delivers exceptional accuracy and stability for precision analog, feedback, and voltage divider circuits. Available worldwide RoHS-compliant for medical, instrumentation, and industrial applications requiring minimal drift over temperature.

ACTIVEResistorVerified Jul 2026

Package / Visual Reference

RN73C2A3K74BResistor Chip

Quick Facts

Manufacturer: TE Connectivity
Package: Resistor Chip
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: RN73C2A3K74B Datasheet PDF
Category: Resistor
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of RN73C2A3K74B?

3.74 kΩ ±0.1% tolerance with ±10 ppm/°C TCR for ultra-stable precision resistor networks across wide temperature ranges
0.1 W thin-film construction delivers low excess noise for high-resolution ADC front ends and sensitive analog signal paths
0805 surface-mount package enables automated assembly while maintaining precision performance in compact PCB designs

What is RN73C2A3K74B used for?

The RN73C2A3K74B is used in precision voltage dividers, gain-setting feedback networks, and reference circuits in medical devices, data acquisition systems, and test instrumentation where ±0.1% resistance accuracy directly affects measurement fidelity. Its ±10 ppm/°C temperature coefficient minimizes drift-induced errors across industrial and medical operating temperature ranges. The thin-film construction also provides low excess noise, making it ideal for low-level sensor signal conditioning, precision op-amp circuits, and high-resolution ADC interface designs.

Compliance & Regulatory

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

Where can I find the RN73C2A3K74B datasheet?

RN73C2A3K74B Datasheet Download

Official datasheet from TE Connectivity

What are equivalent replacements for RN73C2A3K74B?

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

Frequently Asked Questions

What accuracy and thermal drift does the RN73C2A3K74B offer for precision voltage divider networks?

The RN73C2A3K74B provides ±0.1% resistance tolerance on its 3.74 kΩ nominal value and a temperature coefficient of ±10 ppm/°C. Over a 100°C operating range this limits drift to an equivalent 1,000 ppm total shift, making it reliable for ratiometric dividers and gain-setting networks in precision instruments measuring voltages as low as a few millivolts.

How does the 0.1 W power rating of the RN73C2A3K74B affect its suitability for signal-level analog circuits?

The 0.1 W continuous rating allows the RN73C2A3K74B to handle up to 100 mW of dissipation, which covers virtually all signal-level applications where resistors in feedback and divider networks carry only microamp to milliamp currents from 3.3 V or 5 V rails. The thin-film construction at this power level also keeps voltage noise well below that of thick-film equivalents, preserving signal integrity in sensitive analog front ends.

When should a designer choose the RN73C2A3K74B thin-film resistor over a thick-film 0805 alternative in a medical device?

The ±10 ppm/°C TCR of the RN73C2A3K74B delivers less than 0.1% total resistance drift over a 100°C range, whereas typical thick-film resistors drift at 100 to 200 ppm/°C. For a 3.74 kΩ current-sense or feedback element in a medical-grade analog front end powered from 5 V rails, the thin-film construction also reduces excess noise, maintaining ADC resolution at 16 bits or better in precision diagnostic equipment.

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