ERA-2HEC6491P Equivalent & Substitute Parts

Part Overview

The ERA-2HEC6491P is a 6.49 kOhms ±0.25% thin film chip resistor in 0402 (1005 Metric) package rated at 1/16W (0.063W). This part is manufactured by Panasonic Electronic Components and is currently classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

ERA-2HEC6491P

Panasonic Electronic ComponentsIn Stock: 764ERA-2HEC6491P Datasheet

Current PartRFQ

ERA-2AEC6491X

Panasonic Electronic ComponentsIn Stock: 805ERA-2AEC6491X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERA-2HEC6491P is determined by the following critical parameters:

• Resistance Value: 6.49 kOhms (exact match required)
• Tolerance: ±0.25% (precision specification)
• Power Rating: 0.063W, 1/16W (electrical stress rating)
• Package Type: 0402 (1005 Metric) (physical and footprint compatibility)
• Composition: Thin Film (performance characteristics)
• Temperature Coefficient: ±25ppm/°C (thermal stability)

The ERA-2AEC6491X qualifies as a direct substitute because it matches all critical electrical and mechanical parameters. The primary distinction is that ERA-2AEC6491X is an active product with automotive AEC-Q200 qualification and an extended upper operating temperature limit.

Parameter Comparison

Engineering Selection Recommendations

The ERA-2AEC6491X is the qualified substitute for the obsolete ERA-2HEC6491P. Both parts are manufactured by Panasonic Electronic Components and share identical electrical specifications and package dimensions. The ERA-2AEC6491X maintains ROHS3 compliance and MSL 1 rating, ensuring compatibility with existing assembly and storage requirements.

The ERA-2AEC6491X offers an extended operating temperature range (-55°C ~ 155°C versus -55°C ~ 125°C) and carries AEC-Q200 automotive qualification. These enhancements provide additional design margin and qualification status without compromising the original design intent. The active product status of ERA-2AEC6491X ensures long-term availability and supply chain stability compared to the obsolete ERA-2HEC6491P.

Frequently Asked Questions (FAQ)

Q: Can ERA-2AEC6491X be used as a direct replacement for ERA-2HEC6491P?

A: Yes. Both parts share identical resistance (6.49 kOhms), tolerance (±0.25%), power rating (0.063W), package (0402), and temperature coefficient (±25ppm/°C). The ERA-2AEC6491X is electrically and mechanically compatible with designs specified for ERA-2HEC6491P.

Q: What is the difference between ERA-2HEC and ERA-2AEC series?

A: The ERA-2AEC series includes AEC-Q200 automotive qualification and an extended upper operating temperature limit of 155°C compared to 125°C for the ERA-2HEC series. Both series use identical thin film composition and precision tolerance specifications.

Q: Are there any package or footprint differences?

A: No. Both ERA-2HEC6491P and ERA-2AEC6491X use the 0402 (1005 Metric) package with identical dimensions (0.039" L x 0.020" W, 1.00mm x 0.50mm) and height (0.016" maximum seated height). PCB footprints are interchangeable.

Q: Why is ERA-2HEC6491P listed as obsolete?

A: The ERA-2HEC6491P has been discontinued by Panasonic Electronic Components. The ERA-2AEC6491X serves as the active replacement, offering equivalent performance with enhanced automotive qualification and extended temperature range.

Q: Are both parts RoHS compliant?

A: Yes. Both ERA-2HEC6491P and ERA-2AEC6491X are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.