RN732ATTD5563F100 Equivalent & Substitute Parts

Part Overview

The RN732ATTD5563F100 is a 556 kOhms ±1% 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 moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Substiute Parts

RN732ATTD5563F100

KOA Speer Electronics, Inc.In Stock: 863RN732ATTD5563F100 Datasheet

Current PartRFQ

RN73R2ATTD5563F100

KOA Speer Electronics, Inc.In Stock: 680RN73R2ATTD5563F100 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD5563F100 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 556 kOhms
• Tolerance: ±1%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±100ppm/°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 the original 0.1W specification, provided the package dimensions remain unchanged
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) may be present in substitute parts without affecting compatibility

The RN73R2ATTD5563F100 qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD5563F100 is the direct substitute for the obsolete RN732ATTD5563F100. Selection of this substitute is based on the following engineering factors:

Electrical Equivalence: Both parts maintain identical resistance (556 kOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's higher power rating (0.125W versus 0.1W) presents no compatibility constraint and provides additional thermal margin.

Mechanical Compatibility: Package dimensions, footprint, and termination configuration are identical between the main part and substitute, ensuring direct PCB layout compatibility without redesign.

Compliance Status: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, maintaining regulatory and environmental requirements.

Product Availability: The substitute part is active and currently in production, eliminating supply chain risk associated with the obsolete main part. The substitute carries AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD5563F100 be used as a direct replacement for RN732ATTD5563F100 in existing designs?

A: Yes. The substitute part is electrically and mechanically equivalent. Identical resistance, tolerance, temperature coefficient, package dimensions, and operating temperature range ensure direct compatibility. No circuit redesign or PCB layout modification is required.

Q: What is the significance of the higher power rating (0.125W vs. 0.1W) in the substitute part?

A: The substitute's higher power rating indicates greater thermal capacity. In applications where the original 0.1W part was operating within its power budget, the 0.125W substitute will operate at lower junction temperature, providing improved reliability margin. This represents an enhancement, not a limitation.

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

A: No. AEC-Q200 is an additional qualification that does not restrict component use. The substitute meets or exceeds all specifications of the original part and is suitable for any application where the main part was specified.

Q: Are the physical dimensions and PCB footprints identical?

A: Yes. Both parts are 0805 (2012 Metric) package 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). No PCB layout changes are necessary.

Q: What is the difference between the RN73 and RN73R series designations?

A: The RN73R series represents an updated product line with enhanced specifications and active manufacturing status. The RN732ATTD5563F100 (RN73 series) is obsolete, while RN73R2ATTD5563F100 (RN73R series) is the current active equivalent from the same manufacturer.

Q: Are moisture sensitivity levels equivalent between the two parts?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage and handling requirements are identical.