RN731ETTP4752D50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP4752D50 is a 47.5 kOhms ±0.5% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) power dissipation. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The RN73 series from KOA Speer Electronics provides moisture-resistant thin film construction suitable for precision applications requiring tight tolerance specifications.

Substiute Parts

RN731ETTP4752D50

KOA Speer Electronics, Inc.In Stock: 1150RN731ETTP4752D50 Datasheet

Current PartRFQ

RN73R1ETTP4752D50

KOA Speer Electronics, Inc.In Stock: 788RN73R1ETTP4752D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN731ETTP4752D50 is determined by strict equivalence across the following parameters: resistance value (47.5 kOhms), tolerance (±0.5%), power rating (0.063W), package type (0402), composition (thin film), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected).

The RN73R1ETTP4752D50 qualifies as a direct substitute because it maintains identical electrical specifications and package dimensions while offering active product status. The addition of AEC-Q200 automotive qualification in the RN73R series represents an enhancement rather than a deviation from the original specifications, as automotive-grade components meet or exceed standard industrial requirements.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1ETTP4752D50 is the appropriate substitute for the obsolete RN731ETTP4752D50. Both components share identical electrical and mechanical specifications, ensuring direct functional equivalence in circuit applications. The RN73R1ETTP4752D50 maintains active product status with current manufacturing support, eliminating supply chain risk associated with obsolete components.

The RN73R series incorporation of AEC-Q200 automotive qualification provides additional reliability assurance without introducing incompatibility. This qualification indicates the component meets automotive industry standards for temperature cycling, moisture resistance, and long-term reliability. For applications not requiring automotive certification, the RN73R1ETTP4752D50 remains fully compatible with designs originally specified for the RN731ETTP4752D50.

Both components comply with ROHS3 and REACH regulations, maintaining regulatory compliance across design transitions.

Frequently Asked Questions (FAQ)

Q: Can the RN73R1ETTP4752D50 be used as a direct replacement for the RN731ETTP4752D50?

A: Yes. The RN73R1ETTP4752D50 provides direct functional equivalence. All critical parameters—resistance value, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range—are identical. The component is pin-compatible and footprint-compatible with no circuit modifications required.

Q: What is the significance of AEC-Q200 qualification in the RN73R1ETTP4752D50?

A: AEC-Q200 is an automotive industry standard qualification that certifies component reliability under automotive operating conditions. This qualification does not restrict use in non-automotive applications; it indicates the component meets or exceeds standard industrial reliability requirements.

Q: Are there any compliance differences between the two parts?

A: No. Both components are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across the substitution.

Q: What is the moisture sensitivity level, and why is it relevant?

A: Both components have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture-controlled storage or handling procedures.

Q: Are the physical dimensions identical?

A: Yes. Both components are 0402 (1005 Metric) package with identical length (0.039" / 1.00mm), width (0.020" / 0.50mm), and maximum seated height (0.016" / 0.40mm). PCB footprints are identical.

Q: Why is the RN731ETTP4752D50 classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The RN73R1ETTP4752D50 represents the active equivalent within the KOA Speer Electronics product line, ensuring continued availability and manufacturing support.