RN732ATTD4530D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4530D50 is a 453 Ohm thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features ±0.5% tolerance, moisture resistance, and operates across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD4530D50

KOA Speer Electronics, Inc.In Stock: 1189RN732ATTD4530D50 Datasheet

Current PartRFQ

RN73R2ATTD4530D50

KOA Speer Electronics, Inc.In Stock: 803RN73R2ATTD4530D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4530D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 453 Ohms
• Tolerance: ±0.5%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance capability
• RoHS3 compliance

Allowable Variation:

• Power rating may be equal or higher (0.1W or greater)
• Product status may differ (active vs. obsolete)
• Packaging format (bulk vs. tape & reel) may vary
• Additional certifications (AEC-Q200) do not disqualify substitution

The RN73R2ATTD4530D50 meets all mandatory matching criteria while offering enhanced power rating (0.125W vs. 0.1W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4530D50 serves as a direct functional substitute for the obsolete RN732ATTD4530D50. Both components share identical electrical specifications (453 Ohms, ±0.5% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical dimensions and termination count).

The substitute part offers the following advantages:

• Active Product Status: The RN73R2ATTD4530D50 is currently in active production, ensuring long-term availability and supply chain continuity.
• Enhanced Power Rating: The 0.125W (1/8W) rating provides 25% additional power dissipation capacity compared to the 0.1W original specification, supporting designs with higher thermal margins.
• Automotive Qualification: AEC-Q200 certification qualifies this component for automotive applications, expanding its deployment scope.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Selection of the RN73R2ATTD4530D50 is appropriate for all applications previously specified for the RN732ATTD4530D50, with no circuit redesign required.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4530D50 be used as a direct replacement for the RN732ATTD4530D50?

A: Yes. Both components share identical resistance (453 Ohms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), package format (0805), and operating temperature range (-55°C ~ 155°C). The substitute part is electrically and mechanically compatible with no circuit modifications necessary.

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

A: The RN732ATTD4530D50 is rated at 0.1W (1/10W), while the RN73R2ATTD4530D50 is rated at 0.125W (1/8W). The higher power rating of the substitute part does not affect compatibility; it simply provides additional thermal dissipation capacity.

Q: Are there packaging differences between these parts?

A: The main part (RN732ATTD4530D50) is supplied in standard packaging, while the substitute (RN73R2ATTD4530D50) is available in Tape & Reel (TR) format. Both use identical 0805 (2012 Metric) package geometry with matching dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and height (0.024" / 0.60mm maximum).

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

A: No. AEC-Q200 certification indicates automotive-grade qualification and does not restrict use in general industrial or consumer applications. The substitute part meets or exceeds all specifications of the original component.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RN732ATTD4530D50 and RN73R2ATTD4530D50 are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: Why is the original part listed as obsolete?

A: The RN732ATTD4530D50 has been discontinued by the manufacturer. The RN73R2ATTD4530D50 represents the active production equivalent, ensuring continued availability for new designs and replacement procurement.