RN731ETTP9420C50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP9420C50 is a 942 Ohm ±0.25% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W). Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction and operates across -55°C to 155°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

RN731ETTP9420C50

KOA Speer Electronics, Inc.In Stock: 1051RN731ETTP9420C50 Datasheet

Current PartRFQ

RN73R1ETTP9420C50

KOA Speer Electronics, Inc.In Stock: 868RN73R1ETTP9420C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Resistance value: 942 Ohms (exact match required)
• Tolerance: ±0.25% (exact match required)
• Power rating: 0.063W, 1/16W (exact match required)
• Package: 0402 (1005 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Moisture resistance: Required feature
• Number of terminations: 2 (exact match required)

The RN73R1ETTP9420C50 meets all substitution criteria while offering active product status and automotive-grade AEC-Q200 certification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1ETTP9420C50 is the direct substitute for the obsolete RN731ETTP9420C50. Both components are manufactured by KOA Speer Electronics, Inc. and maintain identical electrical and mechanical specifications across all critical parameters. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability. The addition of AEC-Q200 automotive qualification on the substitute part provides enhanced reliability documentation without compromising compatibility. Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements across applications.

Frequently Asked Questions (FAQ)

Q: Can RN73R1ETTP9420C50 be used as a direct replacement for RN731ETTP9420C50?

A: Yes. Both parts share identical resistance (942 Ohms), tolerance (±0.25%), power rating (0.063W), package (0402), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). Electrical and mechanical compatibility is complete.

Q: What is the primary difference between these two parts?

A: The RN73R1ETTP9420C50 is an active product with AEC-Q200 automotive qualification, while the RN731ETTP9420C50 is obsolete. The substitute part provides ongoing supply availability and automotive-grade reliability documentation.

Q: Are there packaging differences between the main part and substitute?

A: No. Both parts use 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 height).

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity level). ECCN and HTSUS classifications are identical.

Q: Is the AEC-Q200 qualification on the substitute part a requirement for my application?

A: AEC-Q200 qualification is an additional feature on the substitute part. If your application does not require automotive-grade certification, this does not affect substitution eligibility. The electrical and mechanical parameters remain identical.