Bourns Announces its Smallest Package AEC-Q200 Compliant, Automotive Grade Thick Film Resistors

Bourns has expanded its CR-A-AS resistor family with a new ultra-compact offering: the CR01005A-AS Series. Measuring just 0.4 mm × 0.2 mm × 0.13 mm, it is the smallest AEC-Q200 compliant thick film resistor the company has released to date. Built for space-limited designs and challenging environmental conditions, the series brings together proven reliability, sulfur resistance, and robust electrical performance in a footprint suited for today’s high-density electronics.

Designed for Harsh Environments and Tight Spaces

The CR01005A-AS Series is fully compliant with the ASTM B-809 sulfur resistance standard, helping to reduce the risk of corrosion-induced failures in sulfur-rich environments. This makes it a strong fit for automotive, industrial, and portable consumer applications where long-term stability is essential.

The resistor’s sulfur-resistant film construction is validated through 1,000 hours of exposure at 105°C, and Bourns confirms full compliance with AEC-Q200 reliability standards, including thermal shock, humidity bias, and mechanical stress.

Compact Form, Full Performance

Despite its tiny package, the CR01005A-AS Series delivers dependable performance:

• Resistance range: 1 Ω to 1 MΩ
• Tolerance: ±1% to ±5%
• TCR: as low as ±200 ppm/°C
• Power rating: 0.03125 W at 70°C (linear derating to 0 W at 125°C)
• Max working voltage: 15 V
• Overload voltage: 30 V
• Operating temperature: –55°C to +125°C

Load-life testing shows resistance drift within ±(1% + 0.05 Ω) after 1,000 hours under rated conditions, and solder heat endurance is confirmed with <0.5% resistance change after 10 seconds at 270°C.

Ideal for Automotive and Portable Electronics

The ultra-small footprint supports higher component densities, allowing engineers to shrink device sizes or add functionality to existing board layouts. Applications include:

• Automotive ECUs and sensors
• Smartwatches and wearables
• Smartphones and portable IoT devices
• Industrial modules in high-sulfur environments

Each resistor is supplied on 7" reels with 10,000 parts per reel, making them suitable for automated high-volume assembly lines.

The Bourns CR01005A-AS Series is available now from authorised distributors and is both RoHS compliant and halogen free.

Learn more and read the original article on www.bourns.com

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