RN732ATTD1290D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1290D50 is a 129 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 features moisture-resistant construction and operates across -55°C to 155°C temperature range.

The RN732ATTD1290D50 is classified as obsolete. Locating equivalent or substitute components becomes necessary for ongoing production, maintenance, or redesign activities where original stock is depleted or procurement becomes impractical.

Substiute Parts

RN732ATTD1290D50

KOA Speer Electronics, Inc.In Stock: 777RN732ATTD1290D50 Datasheet

Current PartRFQ

RN73R2ATTD1290D50

KOA Speer Electronics, Inc.In Stock: 802RN73R2ATTD1290D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1290D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 129 Ohms
• Tolerance: ±0.5%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant construction

Allowable Variation:

• Power rating may be equal to or greater than 0.1W
• Packaging format may differ (bulk to Tape & Reel)
• Additional certifications or features may be present

The RN73R2ATTD1290D50 qualifies as a direct substitute based on these criteria. It maintains identical electrical specifications while offering enhanced power rating (0.125W vs 0.1W) and automotive-grade qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1290D50 is the direct substitute for the obsolete RN732ATTD1290D50. Selection of this substitute is based on the following engineering factors:

Product Status: The RN732ATTD1290D50 is obsolete, while the RN73R2ATTD1290D50 maintains active production status, ensuring long-term availability and supply chain continuity.

Electrical Equivalence: Both components share identical resistance (129 Ohms), tolerance (±0.5%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's higher power rating (0.125W vs 0.1W) provides additional thermal margin without affecting circuit performance.

Compliance and Certifications: Both parts are ROHS3 compliant and REACH unaffected. The substitute carries AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications and indicates enhanced reliability screening.

Physical Compatibility: Identical package dimensions (0805 / 2012 Metric) and height specifications ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1290D50 be used as a direct replacement for the RN732ATTD1290D50?

A: Yes. Both components share identical electrical specifications (129 Ohms ±0.5%, ±50ppm/°C, -55°C ~ 155°C operating range) and physical package dimensions (0805 / 2012 Metric). The substitute's higher power rating (0.125W vs 0.1W) is compatible with circuits designed for the original part.

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

A: The RN732ATTD1290D50 is rated at 0.1W (1/10W), while the RN73R2ATTD1290D50 is rated at 0.125W (1/8W). The substitute's higher power rating provides additional thermal dissipation capability and does not create incompatibility with existing circuit designs.

Q: Are there packaging differences between these parts?

A: The RN732ATTD1290D50 is supplied in standard packaging, while the RN73R2ATTD1290D50 is available in Tape & Reel (TR) format. Both use identical 0805 (2012 Metric) package geometry and are mechanically interchangeable on PCBs.

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

A: No. AEC-Q200 certification indicates automotive-grade reliability screening and does not restrict component use in non-automotive circuits. The certification represents an additional quality assurance measure.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1290D50 and RN73R2ATTD1290D50 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) for these components?

A: Both parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.