RN731ETTP34R4F50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP34R4F50 is a 34.4 Ohm ±1% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) with moisture resistant construction. This part is manufactured by KOA Speer Electronics, Inc. and carries an Obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

RN731ETTP34R4F50

KOA Speer Electronics, Inc.In Stock: 824RN731ETTP34R4F50 Datasheet

Current PartRFQ

RN73R1ETTP34R4F50

KOA Speer Electronics, Inc.In Stock: 969RN73R1ETTP34R4F50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN731ETTP34R4F50 is determined by strict equivalence across the following critical parameters:

• Resistance value: 34.4 Ohms
• Tolerance: ±1%
• Power rating: 0.063W (1/16W)
• Package: 0402 (1005 Metric)
• Composition: Thin Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance: Required
• RoHS3 compliance: Required
• MSL rating: 1 (Unlimited)

The substitute part RN73R1ETTP34R4F50 meets all these parameters while offering an Active product status and additional AEC-Q200 automotive qualification. This substitution is valid because all electrical and mechanical specifications remain identical, with the substitute providing enhanced qualification without compromising the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1ETTP34R4F50 is the direct substitute for the obsolete RN731ETTP34R4F50. Both parts are manufactured by KOA Speer Electronics, Inc. and share identical electrical and mechanical specifications. The substitute part carries Active product status, ensuring long-term availability and supply chain continuity.

The RN73R1ETTP34R4F50 includes AEC-Q200 automotive qualification, which represents an enhancement over the original part without introducing any design incompatibility. This qualification is additive and does not restrict the part's use in non-automotive applications. Both parts maintain ROHS3 compliance and MSL 1 rating, supporting unrestricted moisture handling and storage.

For applications requiring component replacement or new production, the RN73R1ETTP34R4F50 is the recommended selection due to its Active status and equivalent performance across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can RN73R1ETTP34R4F50 be used as a direct replacement for RN731ETTP34R4F50?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 34.4 Ohm resistance, ±1% tolerance, 0.063W power rating, 0402 package, thin film composition, ±50ppm/°C temperature coefficient, and -55°C to 155°C operating range. The substitute part is fully compatible with existing designs.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. RN731ETTP34R4F50 is Obsolete, while RN73R1ETTP34R4F50 is Active. The substitute part includes AEC-Q200 automotive qualification, which is an additional certification that does not affect compatibility with non-automotive applications.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) with a maximum seated height of 0.016" (0.40mm). They are fully interchangeable at the PCB assembly level.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or use.

Q: Is RoHS compliance the same for both parts?

A: Yes. Both parts are ROHS3 compliant, meeting the same environmental and regulatory requirements.

Q: Can the substitute part be used in automotive applications?

A: Yes. The RN73R1ETTP34R4F50 carries AEC-Q200 qualification, making it suitable for automotive use. It can also be used in non-automotive applications without restriction.