ERA-2HEC3741P Equivalent & Substitute Parts

Part Overview

The ERA-2HEC3741P is a 3.74 kOhms ±0.25% thin film chip resistor in 0402 (1005 Metric) package rated at 1/16W (0.063W). This part is classified as obsolete and requires identification of suitable alternatives for new designs or production continuity. The ERA-2HEC series has been superseded by newer product lines offering enhanced specifications and active manufacturing status.

Substiute Parts

ERA-2HEC3741P

Panasonic Electronic ComponentsIn Stock: 730ERA-2HEC3741P Datasheet

Current PartRFQ

ERA-2AEC3741X

Panasonic Electronic ComponentsIn Stock: 1123ERA-2AEC3741X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERA-2HEC3741P is determined by the following critical parameters:

• Resistance value: 3.74 kOhms (exact match required)
• Tolerance: ±0.25% (precision specification)
• Power rating: 0.063W minimum
• Package: 0402 (1005 Metric) form factor
• Composition: Thin film construction
• Temperature coefficient: ±25ppm/°C or better
• RoHS3 compliance

The ERA-2AEC3741X meets all substitution criteria as an active product with identical electrical specifications and package dimensions. The primary distinction is the addition of AEC-Q200 automotive qualification and an extended upper operating temperature limit.

Parameter Comparison

Engineering Selection Recommendations

The ERA-2AEC3741X is the direct substitute for ERA-2HEC3741P applications. Both parts share identical electrical and mechanical specifications, ensuring pin-compatible and functionally equivalent operation. The ERA-2AEC3741X offers the advantage of active product status with continued manufacturing support and availability.

The ERA-2AEC3741X includes AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications. The extended operating temperature range to 155°C provides additional thermal margin for applications operating near the upper limit of the ERA-2HEC3741P specification.

Selection between these parts should be based on supply chain requirements and application environment. For new designs or production continuity, the ERA-2AEC3741X is the recommended choice due to active manufacturing status and enhanced specifications.

Frequently Asked Questions (FAQ)

Q: Can ERA-2AEC3741X replace ERA-2HEC3741P in existing designs?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, package, and temperature coefficient specifications. Direct substitution is possible without circuit modification.

Q: What is the significance of AEC-Q200 qualification on the ERA-2AEC3741X?

A: AEC-Q200 is an automotive industry qualification standard. This certification does not restrict use in non-automotive applications and indicates enhanced reliability testing and quality assurance processes.

Q: Does the extended temperature range of ERA-2AEC3741X affect non-automotive applications?

A: No. The extended operating range to 155°C is a superset of the ERA-2HEC3741P specification (-55°C ~ 125°C). Applications operating within the original temperature range experience no adverse effects.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use identical 0402 (1005 Metric) packaging with matching dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm).

Q: What is the basis for substitution compatibility?

A: Substitution is based on matching resistance value (3.74 kOhms), tolerance (±0.25%), power rating (0.063W), package form factor (0402), composition (thin film), temperature coefficient (±25ppm/°C), and environmental compliance (RoHS3).