ERA-2HEC4641X Equivalent & Substitute Parts

Part Overview

The ERA-2HEC4641X is a 4.64 kOhms ±0.25% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W). This part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement. The ERA-2AEC4641X serves as a direct substitute, offering identical electrical specifications with extended operating temperature range and automotive qualification.

Substiute Parts

ERA-2HEC4641X

Panasonic Electronic ComponentsIn Stock: 1133ERA-2HEC4641X Datasheet

Current PartRFQ

ERA-2AEC4641X

Panasonic Electronic ComponentsIn Stock: 864ERA-2AEC4641X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERA-2HEC4641X is determined by strict equivalence across the following parameters:

• Resistance value: 4.64 kOhms
• Tolerance: ±0.25%
• Power rating: 0.063W (1/16W)
• Package type: 0402 (1005 Metric)
• Composition: Thin Film
• Temperature coefficient: ±25ppm/°C
• Physical dimensions and termination count

The ERA-2AEC4641X meets all these criteria. The substitute part maintains identical electrical performance while offering an extended maximum operating temperature of 155°C (versus 125°C for the main part) and includes AEC-Q200 automotive qualification. Both parts are ROHS3 compliant with MSL rating of 1.

Parameter Comparison

Engineering Selection Recommendations

The ERA-2AEC4641X is the appropriate substitute for the obsolete ERA-2HEC4641X. Both parts share identical electrical and mechanical specifications, ensuring direct functional compatibility. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain stability. The AEC-Q200 automotive qualification of the ERA-2AEC4641X provides additional reliability assurance and does not restrict use in non-automotive applications. The extended operating temperature range (-55°C ~ 155°C versus -55°C ~ 125°C) of the substitute part provides enhanced thermal margin for demanding environments.

Frequently Asked Questions (FAQ)

Q: Can ERA-2AEC4641X be used as a direct replacement for ERA-2HEC4641X?

A: Yes. Both parts are identical in resistance value (4.64 kOhms), tolerance (±0.25%), power rating (0.063W), package (0402), and temperature coefficient (±25ppm/°C). Physical dimensions and termination configuration are identical, enabling direct PCB-level substitution without design modification.

Q: What is the difference between ERA-2HEC4641X and ERA-2AEC4641X?

A: The primary differences are product status and automotive qualification. ERA-2HEC4641X is obsolete; ERA-2AEC4641X is active. ERA-2AEC4641X includes AEC-Q200 automotive qualification and operates to 155°C maximum versus 125°C for the main part. Electrical performance is identical.

Q: Are there any package or footprint differences?

A: No. Both parts 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" / 0.40mm maximum seated). PCB footprints are interchangeable.

Q: Is ERA-2AEC4641X suitable for non-automotive applications?

A: Yes. AEC-Q200 qualification does not restrict use in non-automotive circuits. The automotive qualification indicates enhanced reliability testing and is applicable across all application categories.

Q: What is the inventory status of these parts?

A: ERA-2HEC4641X (obsolete): 1114 pcs available. ERA-2AEC4641X (active): 853 pcs available.