ERA-8ARB2491V Equivalent & Substitute Parts

Part Overview

The ERA-8ARB2491V is a 2.49 kOhms ±0.1% thin film chip resistor in 1206 (3216 Metric) package manufactured by Panasonic Electronic Components. This component is rated for automotive applications under AEC-Q200 standard with a power rating of 0.25W (1/4W) and operating temperature range of -55°C to 155°C. The part is currently in active production status with 1328 units available in stock. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and performance optimization options for circuit implementations requiring this resistance value and package configuration.

Substiute Parts

ERA-8ARB2491V

Panasonic Electronic ComponentsIn Stock: 1394ERA-8ARB2491V Datasheet

Current PartRFQ

ERA-8ARW2491V

Panasonic Electronic ComponentsIn Stock: 4612ERA-8ARW2491V Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERA-8ARB2491V is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 2.49 kOhms
• Package type: 1206 (3216 Metric)
• Power rating: 0.25W (1/4W)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C to 155°C
• Automotive rating: AEC-Q200

Allowable Variation:

• Tolerance: May be equal to or tighter (lower) than ±0.1%

The ERA-8ARW2491V qualifies as a substitute part because it maintains all mandatory parameters while providing improved tolerance specification (±0.05% versus ±0.1%), representing an upgrade path for applications requiring higher precision.

Parameter Comparison

Engineering Selection Recommendations

Both the ERA-8ARB2491V and ERA-8ARW2491V are active production components manufactured by Panasonic Electronic Components with full AEC-Q200 automotive qualification. Both parts maintain identical mechanical and thermal specifications, ensuring direct PCB compatibility without layout modifications.

The ERA-8ARW2491V represents an upgrade option due to its tighter tolerance specification (±0.05% versus ±0.1%), providing enhanced precision for applications where resistance value accuracy is critical. This substitute maintains all compliance certifications including ROHS3 and REACH Unaffected status.

Selection between these parts should be based on application tolerance requirements and inventory availability. The ERA-8ARW2491V offers higher stock availability (4548 units versus 1328 units), which may provide supply chain advantages for high-volume production.

Frequently Asked Questions (FAQ)

Q: Can ERA-8ARW2491V be used as a direct replacement for ERA-8ARB2491V?

A: Yes. Both parts share identical resistance value, package type, power rating, temperature coefficient, operating temperature range, and AEC-Q200 automotive qualification. The ERA-8ARW2491V features improved tolerance (±0.05% versus ±0.1%), making it a compatible upgrade.

Q: What is the difference between these two parts?

A: The primary difference is tolerance specification. ERA-8ARB2491V has ±0.1% tolerance, while ERA-8ARW2491V has ±0.05% tolerance. All other electrical and mechanical parameters are identical.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both parts use identical 1206 (3216 Metric) package dimensions and footprint specifications. No PCB redesign is required for substitution.

Q: Do both parts meet automotive standards?

A: Yes. Both ERA-8ARB2491V and ERA-8ARW2491V carry AEC-Q200 automotive qualification and are ROHS3 compliant.

Q: Which part should be selected for high-precision applications?

A: The ERA-8ARW2491V with ±0.05% tolerance is suitable for applications requiring tighter resistance value accuracy compared to the ±0.1% tolerance of ERA-8ARB2491V.

Q: Are moisture sensitivity considerations different between these parts?

A: No. Both parts have identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no special moisture handling requirements.