RN732ATTD4591D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591D50 is a 4.59 kOhms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across -55°C to 155°C temperature range.

The RN732ATTD4591D50 carries an Obsolete product status. Identifying equivalent 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

RN732ATTD4591D50

KOA Speer Electronics, Inc.In Stock: 985RN732ATTD4591D50 Datasheet

Current PartRFQ

RN73R2ATTD4591D50

KOA Speer Electronics, Inc.In Stock: 1027RN73R2ATTD4591D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD4591D50 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 4.59 kOhms
• Tolerance: ±0.5%
• 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: Higher power ratings (0.125W or greater) are acceptable substitutes, as they provide equal or superior capability within the same physical package
• Product Status: Active status parts are preferred over Obsolete status for long-term availability
• Certifications: Additional certifications (such as AEC-Q200) do not disqualify a part from substitution

The RN73R2ATTD4591D50 qualifies as a direct substitute based on matching all mandatory parameters while offering increased power rating (0.125W vs. 0.1W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4591D50 is the qualified substitute for the obsolete RN732ATTD4591D50 based on the following engineering criteria:

Product Status Consideration: The RN732ATTD4591D50 is classified as Obsolete, creating supply chain risk. The RN73R2ATTD4591D50 maintains Active product status, ensuring continued availability and manufacturing support from KOA Speer Electronics, Inc.

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute part includes AEC-Q200 automotive qualification, which provides additional quality assurance without introducing incompatibility.

Electrical and Mechanical Compatibility: The substitute part maintains identical resistance value (4.59 kOhms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and physical dimensions (0805 package, 2.00mm x 1.25mm). The increased power rating (0.125W vs. 0.1W) represents a capability enhancement within the same package footprint.

Packaging Consideration: The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume production environments and compatible with automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4591D50 be used as a direct replacement for the RN732ATTD4591D50 in existing designs?

A: Yes. The RN73R2ATTD4591D50 is electrically and mechanically compatible. Both parts share identical resistance value, tolerance, temperature coefficient, operating temperature range, and 0805 package dimensions. The substitute's higher power rating (0.125W vs. 0.1W) does not create incompatibility.

Q: What is the significance of the higher power rating in the substitute part?

A: The RN73R2ATTD4591D50 is rated for 0.125W (1/8W) compared to the original 0.1W (1/10W). This represents increased power dissipation capability within the same physical package. In applications where the original 0.1W rating was adequate, the higher rating provides additional thermal margin without affecting electrical performance or circuit behavior.

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

A: No. AEC-Q200 certification indicates enhanced quality and reliability testing. This certification does not restrict use in non-automotive applications and does not introduce incompatibility. The part remains suitable for all applications where the original RN732ATTD4591D50 was specified.

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

A: Yes. Both parts are packaged in 0805 (2012 Metric) format with dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints and assembly processes require no modification.

Q: What is the difference between the packaging formats mentioned?

A: The RN732ATTD4591D50 packaging format is not specified in the provided data. The RN73R2ATTD4591D50 is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. Tape & Reel packaging is compatible with standard SMD assembly equipment and processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD4591D50 and RN73R2ATTD4591D50 are ROHS3 compliant and carry REACH Unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and use.