RN73C2A40K2B TE Connectivity Resistor (Resistor Chip) In Stock
TE Connectivity RN73 Series thin-film precision SMD resistor in 0805 case with 40.2 kΩ resistance, ±0.1% tolerance, and ±10 ppm/°C temperature coefficient. Rated at 0.1 W, it delivers stable, accurate performance for precision analog and sensor circuits. Available in stock worldwide with fast shipping.
- Manufacturer
- TE Connectivity
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- RN73C2A40K2B Datasheet PDF
- Category
- Resistor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-precise ±0.1% resistance tolerance on a 40.2 kΩ thin-film element for accurate voltage dividers and reference networks
- Low ±10 ppm/°C temperature coefficient minimizes resistance drift across temperature, ensuring stable circuit performance from -55°C to +155°C
- Compact 0805 (2.0 mm × 1.25 mm) package rated at 0.1 W suits space-constrained PCB designs without sacrificing precision
Applications
The RN73C2A40K2B is ideal for precision analog signal conditioning, instrumentation amplifier gain-setting networks, and high-accuracy voltage dividers where resistance drift must stay within ±10 ppm/°C. Its ±0.1% tolerance makes it suitable for sensor interface circuits, data acquisition front-ends, and medical measurement equipment requiring traceability and repeatability. The 0805 footprint integrates seamlessly into automated SMT assembly processes for high-reliability industrial and medical applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for RN73C2A40K2B:
Frequently Asked Questions
How much will 40.2 kΩ resistance drift over a 100°C temperature change with the RN73C2A40K2B?
With a ±10 ppm/°C coefficient, the 40.2 kΩ RN73C2A40K2B drifts by at most 40.2 Ω over a 100°C temperature span, keeping the total resistance between approximately 40.16 kΩ and 40.24 kΩ. This low drift is critical for precision voltage dividers and gain-setting networks in instrumentation applications.
In which precision measurement or analog circuit designs does the RN73C2A40K2B excel?
The RN73C2A40K2B at 40.2 kΩ with ±0.1% tolerance and ±10 ppm/°C TCR is well-suited for instrumentation amplifier gain networks, Wheatstone bridge reference arms, and ADC input attenuation dividers where errors below 0.1% are required. Its 0805 package also fits compactly in medical diagnostic and data acquisition front-end PCBs.
What power dissipation should designers budget for the RN73C2A40K2B in a 5 V supply rail application?
At 5 V across 40.2 kΩ, the RN73C2A40K2B dissipates approximately 0.62 mW, well within its 0.1 W rated maximum. Even in a 50 V node in a high-voltage measurement front-end, dissipation reaches only 62 mW, still safely below the 100 mW limit, so thermal stress is minimal in most precision circuit applications.
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