RN731ETTP1200D50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP1200D50 is a 120 Ohm ±0.5% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and is currently classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

RN731ETTP1200D50

KOA Speer Electronics, Inc.In Stock: 806RN731ETTP1200D50 Datasheet

Current PartRFQ

RN73R1ETTP1200D50

KOA Speer Electronics, Inc.In Stock: 894RN73R1ETTP1200D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN731ETTP1200D50 is determined by strict equivalence across the following critical parameters:

• Resistance value: 120 Ohms
• Tolerance: ±0.5%
• 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 capability
• RoHS3 compliance

The substitute part RN73R1ETTP1200D50 meets all these electrical and mechanical parameters. The primary distinction is that the substitute part carries automotive AEC-Q200 qualification and maintains active product status, whereas the original part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1ETTP1200D50 is a direct functional equivalent to the RN731ETTP1200D50. Both parts share identical electrical specifications, mechanical dimensions, and environmental ratings. The substitute part maintains active product status with KOA Speer Electronics, Inc., ensuring continued availability and supply chain reliability.

The RN73R1ETTP1200D50 includes automotive AEC-Q200 qualification, which certifies the component for automotive applications. This additional qualification does not restrict use in non-automotive applications and provides enhanced reliability documentation. Both parts are ROHS3 compliant and carry MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can RN73R1ETTP1200D50 be used as a direct replacement for RN731ETTP1200D50?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, package dimensions, and operating temperature range. The substitute part is actively manufactured and available.

Q: What is the significance of the AEC-Q200 qualification on the substitute part?

A: AEC-Q200 is an automotive industry standard qualification that certifies component reliability for automotive applications. This qualification does not restrict the part's use in general industrial or consumer applications. It indicates enhanced quality assurance and testing protocols.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both parts use the 0402 (1005 Metric) package with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm).

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

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints. Standard handling and storage practices apply to both components.

Q: What is the difference between the RN73 and RN73R series designations?

A: The RN73R series includes automotive AEC-Q200 qualification. The RN73 series does not carry this automotive certification. Both series share identical electrical and mechanical specifications for equivalent part numbers.