RK73H2HTTE4871F Equivalent & Substitute Parts

Part Overview

The RK73H2HTTE4871F is a 4.87 kOhms ±1% 0.75W chip resistor manufactured by KOA Speer Electronics in the 2010 (5025 Metric) package format. This thick film resistor is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is currently in active production status. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and automotive certifications align with the original component requirements.

Substiute Parts

RK73H2HTTE4871F

KOA Speer Electronics, Inc.In Stock: 1158RK73H2HTTE4871F Datasheet

Current PartRFQ

ERJ-12SF4871U

Panasonic Electronic ComponentsIn Stock: 12394ERJ-12SF4871U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H2HTTE4871F are identified based on strict equivalence across the following critical parameters:

• Resistance value: 4.87 kOhms
• Tolerance: ±1%
• Power rating: 0.75W
• Package format: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Physical dimensions: 0.197" L x 0.098" W (5.00mm x 2.50mm), Height 0.028" max
• Termination count: 2
• RoHS compliance: ROHS3

The ERJ-12SF4871U from Panasonic Electronic Components meets all these electrical and mechanical specifications, establishing it as a parametric equivalent for direct substitution in automotive applications.

Parameter Comparison

Engineering Selection Recommendations

The RK73H2HTTE4871F from KOA Speer Electronics is the primary component choice for new automotive designs. This part maintains active production status and full AEC-Q200 automotive qualification with ROHS3 compliance.

The ERJ-12SF4871U from Panasonic Electronic Components is electrically and mechanically equivalent and carries identical AEC-Q200 automotive certification and ROHS3 compliance. However, this part is designated as "Not For New Designs," indicating it is in mature or declining production phase. Selection of the Panasonic substitute should be limited to legacy system support, field replacements, or applications where existing inventory constraints necessitate alternative sourcing.

Both parts satisfy identical electrical performance requirements, dimensional specifications, and automotive regulatory requirements. The choice between them should be driven by design phase (new vs. legacy), supply chain availability, and procurement strategy rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF4871U be used as a direct replacement for RK73H2HTTE4871F in automotive applications?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance (4.87 kOhms ±1%), power rating (0.75W), package format (2010), temperature coefficient (±100ppm/°C), operating range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. Physical dimensions and termination configuration are identical.

Q: What is the significance of the "Not For New Designs" status on the Panasonic part?

A: This designation indicates the ERJ-12SF4871U is in mature production phase with no planned development or enhancement. It remains available for existing applications and field replacements but should not be selected for new product development. The KOA RK73H2HTTE4871F, with active status, is the recommended choice for new designs.

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

A: No. Both parts carry identical ROHS3 compliance, AEC-Q200 automotive qualification, and Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental certifications are equivalent.

Q: Does package format differ between these resistors?

A: No. Both parts use the 2010 (5025 Metric) package with identical physical dimensions: 0.197" L x 0.098" W (5.00mm x 2.50mm) and maximum seated height of 0.028" (0.70mm). PCB layout and assembly processes require no modification.

Q: What factors should determine selection between these two parts?

A: Selection should be based on design phase (new vs. legacy), supply chain availability, and production status. For new automotive designs, the KOA RK73H2HTTE4871F is the appropriate choice. The Panasonic ERJ-12SF4871U is suitable for legacy system support and field replacements where the original part is unavailable.