Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
AR03BTCX2493
Viking Tech
RES 249K OHM 0.1% 1/10W 0603
20340 Pcs New Original In Stock
249 kOhms ±0.1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Thin Film
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (277 Ratings)
AR03BTCX2493
Product Overview
10279549
DiGi Electronics Part Number
AR03BTCX2493-DGManufacturer
Viking Tech
AR03BTCX2493
Description
RES 249K OHM 0.1% 1/10W 0603Inventory
20340 Pcs New Original In Stock
249 kOhms ±0.1% 0.1W, 1/10W Chip Resistor 0603 (1608 Metric) Thin Film
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
AR03BTCX2493 Technical Specifications
Category
Chip Resistor - Surface Mount
Packaging
Tape & Reel (TR)
Series
AR
Product Status
Active
Resistance
249 kOhms
Tolerance
±0.1%
Power (Watts)
0.1W, 1/10W
Composition
Thin Film
Features
-
Temperature Coefficient
±25ppm/°C
Operating Temperature
-55°C ~ 155°C
Package / Case
0603 (1608 Metric)
Supplier Device Package
0603
Ratings
-
Size / Dimension
0.061" L x 0.031" W (1.55mm x 0.80mm)
Height - Seated (Max)
0.022" (0.55mm)
Number of Terminations
2
Failure Rate
-
Base Product Number
AR03BTC
Datasheet & Documents
HTML Datasheet
AR03BTCX2493-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH info available upon request
Additional Information
Other Names
2577-AR03BTCX2493TR
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
包裝用料細心，硬殼包裝保障商品完整，展示出他們對品質的重視。
Dec 02, 2025
Ich empfehle DiGi Electronics gerne weiter, weil sie höchste Qualitätsstandards erfüllen.
Dec 02, 2025
Their products are built with high standards, reflecting their commitment to excellence.
Dec 02, 2025
Their customer support answered all my questions promptly, ensuring I felt confident with my purchase.
Dec 02, 2025
Their stock management contributes significantly to our operational efficiency.
Dec 02, 2025
DiGi Electronics provides comprehensive after-sales support, which gives us confidence in our investment.
Dec 02, 2025
They deliver on price and punctuality every single time.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
When designing in the AR03BTCX2493, how does its ±25ppm/°C temperature coefficient impact precision bias networks in low-drift amplifier circuits compared to standard 100ppm/°C resistors?
The AR03BTCX2493's ±25ppm/°C TCR significantly reduces resistance drift over temperature, making it ideal for precision amplifier biasing where thermal stability is critical. In comparison to standard thick-film 0603 resistors with 100ppm/°C, the AR03BTCX2493 minimizes gain and offset errors in instrumentation or signal conditioning stages operating across industrial temperatures (-40°C to 85°C). Designers should ensure symmetric PCB layout and thermal coupling when using multiple AR03BTCX2493 units to maintain matching performance and avoid degrading the low-drift advantage.
Can the AR03BTCX2493 replace a Vishay PRN06 249kΩ in a high-accuracy voltage reference divider without introducing long-term stability issues?
Yes, the AR03BTCX2493 can effectively replace the Vishay PRN06 249kΩ in voltage reference applications, provided power loading remains below its 0.1W rating. The AR03BTCX2493’s thin-film construction and ±0.1% tolerance offer comparable initial accuracy and better TCR (±25ppm/°C vs PRN06's typically ±50ppm/°C). However, ensure the operating environment avoids prolonged exposure to humidity or contaminants, as the 0603 package is less robust than larger case sizes. For best long-term stability, conformal coating or hermetic sealing may be advisable in harsh conditions.
What are the PCB layout risks associated with using the AR03BTCX2493 in miniaturized 0603-only designs, and how can thermal gradients affect its performance?
Using the AR03BTCX2493 in high-density 0603-only layouts increases sensitivity to thermal gradients across the board due to its low thermal mass. Uneven heating from nearby components can create localized temperature differences, causing resistance shifts even with its low ±25ppm/°C TCR. Mitigate this by avoiding placement near high-power ICs or copper pours that act as heat spreaders, and use symmetrical routing for differential or matched divider configurations. Additionally, ensure adequate spacing for rework and avoid solder wicking on small pads to prevent tombstoning during reflow.
How does the AR03BTCX2493 perform in high-reliability medical sensing applications compared to similar 0603 thin-film resistors like the Panasonic ERJ-U06F249K?
The AR03BTCX2493 matches the ERJ-U06F249K in key specs—both are 0.1% tolerance, ±25ppm/°C thin-film 0603 resistors—making them suitable for medical sensing where accuracy and stability are critical. The AR03BTCX2493 offers a wide operating temperature range (-55°C to 155°C) and MSL 1 rating, ensuring reliability in sterilization cycles and harsh environments. Unlike some competitors, it's RoHS3 compliant without exemptions. For medical designs, validate long-term stability under accelerated aging tests, and prefer AR03BTCX2493 in designs requiring extended temperature margins or where supply chain diversity is needed alongside ERJ-U06F249K.
What derating guidelines should be followed when using the AR03BTCX2493 in automotive under-the-hood circuits exposed to sustained temperatures above 125°C?
For automotive under-the-hood use, derate the AR03BTCX2493 to 50–60% of its 0.1W power rating at temperatures above 125°C to ensure long-term reliability. Although the resistor supports up to 155°C, sustained high temperature accelerates aging, especially in humid or chemically aggressive environments. Operate below 50mW and verify actual board temperature under load, not ambient. Use thick copper traces or thermal vias to dissipate localized heat, and avoid placing AR03BTCX2493 near exhaust components. Additionally, ensure the solder joints meet automotive reliability standards (e.g., IPC-A-610 Class 3) to prevent fatigue failures due to thermal cycling.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AR03BTCX2493 CAD Models
Viking Tech AR03BTCX2493 PCB symbols & footprints
productDetail
