RN732ATTD4591C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591C50 is a 4.59 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0805 (2012 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

The RN732ATTD4591C50 carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732ATTD4591C50

KOA Speer Electronics, Inc.In Stock: 905RN732ATTD4591C50 Datasheet

Current PartRFQ

RN73R2ATTD4591C50

KOA Speer Electronics, Inc.In Stock: 939RN73R2ATTD4591C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD4591C50 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.59 kOhms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant construction

Allowable Variation Parameters:

• Power Rating: The substitute part may have equal or higher power dissipation capacity
• Product Status: Active status parts are acceptable replacements for Obsolete parts
• Packaging Format: Different packaging configurations (Tape & Reel vs. other formats) do not affect electrical compatibility
• Additional Certifications: Automotive AEC-Q200 qualification does not preclude substitution

The RN73R2ATTD4591C50 meets all mandatory matching criteria and represents a valid substitute with enhanced power rating (0.125W vs. 0.1W) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4591C50 is a direct functional substitute for the RN732ATTD4591C50. Both components share identical electrical specifications for resistance value, tolerance, temperature coefficient, and operating temperature range. The substitute part maintains the same 0805 package footprint and thin film construction.

The RN73R2ATTD4591C50 offers two significant advantages:

1. Active Product Status: The substitute part is currently in active production, ensuring long-term supply availability and eliminating obsolescence risk associated with the main part.

2. Enhanced Power Rating: The substitute provides 0.125W (1/8W) power dissipation capacity compared to the 0.1W (1/10W) rating of the main part. This higher rating provides additional thermal margin in applications without requiring design modifications.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The substitute part includes Automotive AEC-Q200 qualification, which does not restrict its use in non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4591C50 be used as a direct replacement for the RN732ATTD4591C50 without circuit modifications?

A: Yes. The RN73R2ATTD4591C50 is electrically and mechanically compatible. Both parts have identical resistance (4.59 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and 0805 package dimensions. No circuit modifications are required.

Q: What is the difference in power rating between these parts?

A: The main part (RN732ATTD4591C50) is rated for 0.1W (1/10W), while the substitute (RN73R2ATTD4591C50) is rated for 0.125W (1/8W). The substitute provides 25% additional power dissipation capacity. If the original design operates below 0.1W, the higher rating of the substitute presents no compatibility issues.

Q: Does the Automotive AEC-Q200 certification on the substitute part affect its use in non-automotive applications?

A: No. Automotive AEC-Q200 qualification indicates enhanced reliability testing and quality standards. This certification does not restrict the part's use in non-automotive applications and represents an additional quality assurance measure.

Q: Are the physical dimensions identical between the main part and substitute?

A: Yes. Both parts are packaged in the 0805 (2012 Metric) format with identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are interchangeable.

Q: What is the significance of the product status difference?

A: The main part carries Obsolete status, indicating discontinued production. The substitute part is Active, meaning it is currently manufactured and available through normal supply channels. This ensures long-term component availability for production and field service applications.

Q: Are moisture sensitivity levels the same for both parts?

A: Yes. Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. Storage and handling procedures are identical.