Equivalent & Substitute Parts for ERJ-PA2F6491X

Part Overview

The ERJ-PA2F6491X is a 6.49 kOhms ±1% thick film chip resistor manufactured by Panasonic Electronic Components. This 0402 (1005 Metric) package component is rated for 0.25W (1/4W) power dissipation and meets AEC-Q200 automotive qualification standards with pulse withstanding capability. The part is currently active in production with 776 units in stock. Equivalent substitute parts are necessary for supply chain continuity, design flexibility, and sourcing optimization when the primary manufacturer part becomes unavailable or when alternative suppliers offer improved lead times or inventory availability.

Substiute Parts

ERJ-PA2F6491X

Panasonic Electronic ComponentsIn Stock: 857ERJ-PA2F6491X Datasheet

Current PartRFQ

CRCW04026K49FKEDHP

Vishay DaleIn Stock: 2543CRCW04026K49FKEDHP Datasheet

DirectRFQ

RCS04026K49FKED

Vishay DaleIn Stock: 6421RCS04026K49FKED Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-PA2F6491X is determined by strict equivalence across the following critical parameters:

• Resistance value: 6.49 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 0402 (1005 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Automotive Rating: AEC-Q200 (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The substitute parts CRCW04026K49FKEDHP and RCS04026K49FKED, both manufactured by Vishay Dale, meet all critical electrical and mechanical parameters. A secondary consideration is power rating: the ERJ-PA2F6491X is rated at 0.25W (1/4W), while both Vishay Dale substitutes are rated at 0.2W (1/5W). This represents a lower power dissipation capability in the substitute parts and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both CRCW04026K49FKEDHP and RCS04026K49FKED are valid substitutes for the ERJ-PA2F6491X based on electrical equivalence and compliance certifications. All three parts maintain identical resistance, tolerance, package, composition, temperature coefficient, operating temperature range, AEC-Q200 automotive qualification, and RoHS3 compliance status.

The primary design consideration is power dissipation capability. The ERJ-PA2F6491X supports 0.25W continuous power rating, while both Vishay Dale substitutes support 0.2W. Circuit designs operating at power levels between 0.2W and 0.25W must be evaluated to confirm that the lower power rating of the substitute parts remains within acceptable thermal margins.

Both Vishay Dale parts are currently in active production with significantly higher inventory availability (2485 and 6328 units respectively) compared to the Panasonic part (776 units), providing improved supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can CRCW04026K49FKEDHP or RCS04026K49FKED be used as direct replacements for ERJ-PA2F6491X in all applications?

A: Both parts are electrically and mechanically equivalent with respect to resistance value, tolerance, package, composition, temperature coefficient, operating temperature range, and automotive qualification. The critical difference is power rating: the substitutes are rated at 0.2W versus the original 0.25W. Applications operating below 0.2W continuous power dissipation can use these substitutes without modification. Applications requiring the full 0.25W rating must be re-evaluated.

Q: What is the difference between CRCW04026K49FKEDHP and RCS04026K49FKED?

A: Both parts are manufactured by Vishay Dale and share identical electrical specifications, package, and compliance certifications. CRCW04026K49FKEDHP belongs to the CRCW-HP series, while RCS04026K49FKED belongs to the RCS e3 series. The series designation reflects different product lines within Vishay Dale's thick film resistor portfolio. Electrical performance and substitution capability are equivalent.

Q: Are all three parts suitable for automotive applications?

A: Yes. The ERJ-PA2F6491X, CRCW04026K49FKEDHP, and RCS04026K49FKED all carry AEC-Q200 automotive qualification and are rated for the identical operating temperature range of -55°C to 155°C. All three parts meet automotive reliability and qualification standards.

Q: What is the significance of the 0402 package designation?

A: The 0402 package (1005 Metric) is a surface-mount chip resistor with dimensions of 1.00mm length by 0.50mm width and a maximum seated height of 0.40mm. All three parts use this identical package, ensuring mechanical compatibility with PCB layouts and assembly processes.

Q: Are there any compliance or environmental differences between these parts?

A: No. All three parts are ROHS3 compliant, REACH unaffected, carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications, and maintain Moisture Sensitivity Level 1 (unlimited shelf life). Compliance and environmental status are equivalent across all three parts.