RN732ATTD3280C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3280C25 is a 328 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 ±0.25% 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

RN732ATTD3280C25

KOA Speer Electronics, Inc.In Stock: 1112RN732ATTD3280C25 Datasheet

Current PartRFQ

RN73R2ATTD3280C25

KOA Speer Electronics, Inc.In Stock: 800RN73R2ATTD3280C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD3280C25 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 328 Ohms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±25ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistance: Required

Allowable Variation Parameters:

• Power Rating: May be equal or higher than 0.1W
• Product Status: Active status preferred for obsolete parts
• Certifications and Features: May include additional qualifications (e.g., AEC-Q200)

The substitute part RN73R2ATTD3280C25 meets all mandatory matching criteria while offering enhanced power rating (0.125W vs. 0.1W) and automotive qualification (AEC-Q200), with active product status ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RN73R2ATTD3280C25

The RN73R2ATTD3280C25 is the direct equivalent for RN732ATTD3280C25 replacement. Selection rationale:

• Electrical Equivalence: Identical resistance (328 Ohms), tolerance (±0.25%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C) ensure direct functional substitution in circuit applications.

• Package Compatibility: Both parts utilize 0805 (2012 Metric) package format with identical physical dimensions (0.079" L x 0.049" W, 0.024" max height), enabling direct PCB footprint compatibility without layout modifications.

• Power Rating Enhancement: The substitute's 0.125W rating exceeds the original 0.1W specification, providing thermal margin in applications operating at or near the original power limit.

• Compliance Status: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, preserving environmental and handling requirements.

• Product Availability: RN73R2ATTD3280C25 holds active product status with 707 units in stock, ensuring procurement continuity compared to the obsolete RN732ATTD3280C25.

• Automotive Qualification: The substitute includes AEC-Q200 certification, providing additional reliability assurance for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD3280C25 directly replace RN732ATTD3280C25 without circuit redesign?

A: Yes. Both parts share identical electrical specifications (328 Ohms, ±0.25% tolerance, ±25ppm/°C temperature coefficient, -55°C to 155°C operating range) and package format (0805 2012 Metric). Direct substitution is permissible without circuit modification.

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

A: The substitute's 0.125W rating provides additional thermal headroom. Applications operating at or near the original 0.1W specification benefit from reduced thermal stress and extended component life. This represents an enhancement, not a limitation.

Q: Are there packaging differences between the main part and substitute?

A: No. Both parts are supplied in 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, maximum seated height 0.024"). The substitute is available in Tape & Reel (TR) packaging, which is standard for production quantities.

Q: Does AEC-Q200 certification on the substitute affect compatibility?

A: No. AEC-Q200 is an additional qualification that does not alter electrical or mechanical characteristics. Applications not requiring automotive qualification are unaffected; applications requiring automotive-grade components benefit from this certification.

Q: What is the impact of product status (Obsolete vs. Active) on selection?

A: The main part's obsolete status creates long-term procurement risk. The substitute's active status ensures continued manufacturing and availability, supporting design longevity and supply chain stability.

Q: Are moisture sensitivity and RoHS compliance identical between parts?

A: Yes. Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating and ROHS3 compliance, preserving handling, storage, and environmental requirements.