RN732ATTD11R4D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD11R4D50 is a 11.4 Ohms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format with 0.1W power rating. This component is classified as obsolete product status. Due to its obsolete designation, locating equivalent or substitute parts with active production status and compatible electrical and mechanical specifications is necessary for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD11R4D50

KOA Speer Electronics, Inc.In Stock: 885RN732ATTD11R4D50 Datasheet

Current PartRFQ

RN73R2ATTD11R4D50

KOA Speer Electronics, Inc.In Stock: 856RN73R2ATTD11R4D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD11R4D50 is determined by strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 11.4 Ohms
• Tolerance: ±0.5%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistance: Required
• RoHS3 Compliance: Required

Allowable Variation:

• Power rating may be equal to or greater than 0.1W
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) may be present in substitute parts

The substitute part RN73R2ATTD11R4D50 meets all mandatory matching parameters and represents an active production alternative with enhanced automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD11R4D50 is a direct functional substitute for the RN732ATTD11R4D50. Selection criteria are based on the following engineering factors:

Product Status Consideration: The RN732ATTD11R4D50 is obsolete, whereas RN73R2ATTD11R4D50 maintains active production status. This transition ensures long-term component availability and supply chain stability.

Electrical Equivalence: Both parts maintain identical resistance (11.4 Ohms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). Electrical performance is equivalent.

Power Rating: The substitute part provides 0.125W (1/8W) compared to the original 0.1W (1/10W). This represents a 25% increase in power dissipation capability, which is compatible with applications designed for the original part.

Mechanical Compatibility: Both parts share identical 0805 (2012 Metric) package dimensions, footprint, and termination configuration. Direct PCB layout substitution is possible without design modification.

Compliance and Certifications: Both parts are ROHS3 compliant and REACH unaffected. The substitute part includes AEC-Q200 automotive qualification, providing additional reliability assurance for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD11R4D50 replace RN732ATTD11R4D50 in existing designs?

A: Yes. The substitute part maintains identical electrical specifications (11.4 Ohms ±0.5%, ±50ppm/°C, -55°C ~ 155°C operating range) and mechanical package (0805 2012 Metric). The increased power rating (0.125W vs. 0.1W) is compatible with applications designed for the original part. PCB layout modification is not required.

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

A: RN732ATTD11R4D50 is rated at 0.1W (1/10W), while RN73R2ATTD11R4D50 is rated at 0.125W (1/8W). The substitute part can dissipate 25% more power. This difference does not affect compatibility; the substitute part is suitable for all applications within the original part's power specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both RN732ATTD11R4D50 and RN73R2ATTD11R4D50 are ROHS3 compliant and REACH unaffected.

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

A: AEC-Q200 is an automotive industry qualification standard. The substitute part RN73R2ATTD11R4D50 includes this certification, indicating compliance with automotive reliability and quality requirements. This certification is not present on the original part but does not restrict its use in non-automotive applications.

Q: Are the physical dimensions identical?

A: Yes. Both parts are 0805 (2012 Metric) package with dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). Footprint compatibility is confirmed.

Q: Why is the original part obsolete?

A: Product obsolescence is determined by manufacturer production decisions. The substitute part RN73R2ATTD11R4D50 from the same manufacturer (KOA Speer Electronics, Inc.) maintains active production status and provides equivalent electrical and mechanical performance.