RN732ATTD3920F10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3920F10 is a 392 Ohms ±1% thin film chip resistor rated at 0.1W (1/10W) in 0805 (2012 Metric) package format, manufactured by KOA Speer Electronics, Inc. This component features moisture-resistant construction and operates across the temperature range of -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

RN732ATTD3920F10

KOA Speer Electronics, Inc.In Stock: 1105RN732ATTD3920F10 Datasheet

Current PartRFQ

RN73R2ATTD3920F10

KOA Speer Electronics, Inc.In Stock: 831RN73R2ATTD3920F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3920F10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 392 Ohms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant Feature

Allowable Variation Parameters:

• Power Rating: May be equal to or greater than 0.1W
• Product Status: Active status preferred for obsolete parts
• Packaging Format: May differ (e.g., Tape & Reel vs. bulk)
• Additional Certifications: May include automotive or industrial qualifications

The substitute part RN73R2ATTD3920F10 meets all mandatory matching parameters while offering enhanced power rating (0.125W) and active product status with AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RN73R2ATTD3920F10

The RN73R2ATTD3920F10 is the direct equivalent for the obsolete RN732ATTD3920F10. This substitute maintains all critical electrical and mechanical specifications while offering the following advantages:

• Active Product Status: Currently manufactured and stocked, ensuring long-term availability and supply chain continuity
• Enhanced Power Rating: 0.125W rating provides margin above the original 0.1W specification, suitable for applications with variable load conditions
• Automotive Qualification: AEC-Q200 certification indicates compliance with automotive reliability standards, applicable to general industrial and automotive applications
• Identical Physical Footprint: 0805 package dimensions and termination configuration ensure direct PCB compatibility without layout modifications
• Regulatory Compliance: ROHS3 compliant with REACH unaffected status, maintaining environmental and regulatory alignment

The substitute part is suitable for direct replacement in all applications where the original RN732ATTD3920F10 was specified.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD3920F10 be used as a direct replacement for RN732ATTD3920F10?

A: Yes. The RN73R2ATTD3920F10 is a direct substitute. Both parts share identical resistance value (392 Ohms), tolerance (±1%), package format (0805), composition (thin film), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute features a higher power rating (0.125W vs. 0.1W) and active manufacturing status.

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

A: The main part is rated at 0.1W (1/10W), while the substitute is rated at 0.125W (1/8W). The higher rating on the substitute provides additional thermal margin and is fully compatible with applications designed for the lower-rated original part.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). No PCB layout modifications are required.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive industry standard qualification indicating the component meets reliability and performance requirements for automotive applications. This certification is an additional qualification feature of the substitute part and does not restrict its use in non-automotive applications.

Q: Why is the original part listed as obsolete?

A: Product obsolescence indicates the manufacturer has discontinued production of the RN732ATTD3920F10. The RN73R2ATTD3920F10 substitute is actively manufactured and represents the current equivalent offering from KOA Speer Electronics, Inc.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RN732ATTD3920F10 and RN73R2ATTD3920F10 are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited), ensuring compliance with environmental regulations and handling requirements.