RN732ATTD9103C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD9103C50 is a 910 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction 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

RN732ATTD9103C50

KOA Speer Electronics, Inc.In Stock: 914RN732ATTD9103C50 Datasheet

Current PartRFQ

RN73R2ATTD9103C50

KOA Speer Electronics, Inc.In Stock: 751RN73R2ATTD9103C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD9103C50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 910 kOhms
• Tolerance: ±0.25%
• Package type: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture resistance: Required
• RoHS3 compliance: Required

Allowable Variation:

• Power rating: Substitute parts may have equal or higher power rating (0.1W or greater)
• Product status: Active status preferred for long-term availability
• Additional certifications: Automotive AEC-Q200 qualification is permissible as an enhancement

The RN73R2ATTD9103C50 meets all mandatory parameters with an increased power rating of 0.125W (1/8W) and active product status, making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD9103C50 is the direct substitute for the obsolete RN732ATTD9103C50. Selection is based on the following engineering criteria:

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Product Status: The substitute part carries Active product status, providing assured long-term availability and supply chain continuity compared to the obsolete main part.

Electrical Equivalence: Identical resistance (910 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C) ensure direct functional replacement in circuit applications.

Power Rating Enhancement: The substitute's increased power rating (0.125W versus 0.1W) provides additional thermal margin without affecting circuit performance or requiring PCB layout modifications. The identical 0805 package footprint and physical dimensions ensure drop-in compatibility.

Automotive Qualification: The AEC-Q200 automotive qualification of the substitute part represents an enhancement for applications requiring automotive-grade reliability, with no negative impact on non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD9103C50 directly replace RN732ATTD9103C50 in existing designs?

A: Yes. Both parts share identical resistance value (910 kOhms), tolerance (±0.25%), package (0805), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). The substitute's higher power rating (0.125W) and active product status make it a direct functional replacement.

Q: What is the significance of the higher power rating in the substitute part?

A: The RN73R2ATTD9103C50 is rated for 0.125W compared to the main part's 0.1W. This provides additional thermal headroom for the same circuit application. No circuit redesign is required; the substitute operates safely within the original design specifications.

Q: Are there any PCB layout or footprint differences?

A: No. Both parts use the 0805 (2012 Metric) package with identical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and maximum seated height (0.024" / 0.60mm). PCB layouts are fully compatible without modification.

Q: Does the AEC-Q200 automotive qualification affect non-automotive applications?

A: No. AEC-Q200 qualification represents an additional quality and reliability standard. Non-automotive applications are unaffected and benefit from the enhanced qualification level.

Q: What is the moisture sensitivity level, and does it differ between parts?

A: Both parts carry MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to both components.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RN732ATTD9103C50 and RN73R2ATTD9103C50 are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.