RN732ATTD1200D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1200D50 is a 120 Ohms ±0.5% 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 RN732ATTD1200D50 is classified as Obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design flexibility permits the use of functionally compatible alternatives that meet or exceed the original specifications.

Substiute Parts

RN732ATTD1200D50

KOA Speer Electronics, Inc.In Stock: 1078RN732ATTD1200D50 Datasheet

Current PartRFQ

RN73R2ATTD1200D50

KOA Speer Electronics, Inc.In Stock: 985RN73R2ATTD1200D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1200D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 120 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 feature

Allowable Variation:

• Power Rating: The substitute part may have equal or higher power rating than the original 0.1W specification, provided all other electrical and mechanical parameters remain identical.

The RN73R2ATTD1200D50 meets all mandatory matching parameters and provides an increased power rating of 0.125W (1/8W), making it a valid substitute for applications where the original 0.1W rating is sufficient or where additional power dissipation capability is beneficial.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1200D50 is a direct substitute for the RN732ATTD1200D50 based on the following engineering criteria:

Product Status Consideration: The RN732ATTD1200D50 is classified as Obsolete, while the RN73R2ATTD1200D50 maintains Active status. This transition to an active product ensures long-term availability and supply chain continuity.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment. The RN73R2ATTD1200D50 carries additional Automotive AEC-Q200 qualification, which provides enhanced reliability assurance without compromising general-purpose applications.

Electrical and Mechanical Compatibility: All critical electrical parameters—resistance value, tolerance, temperature coefficient, and operating temperature range—are identical. Physical dimensions and package format are equivalent, ensuring direct PCB footprint compatibility.

Power Rating Enhancement: The RN73R2ATTD1200D50 provides 0.125W (1/8W) power rating compared to the original 0.1W (1/10W). This increased rating does not create incompatibility; rather, it provides additional thermal margin for the same application requirements.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1200D50 be used as a direct replacement for the RN732ATTD1200D50 on existing PCBs?

A: Yes. Both parts share identical package dimensions (0805 / 2012 Metric), footprint, and electrical specifications (120 Ohms ±0.5%, ±50ppm/°C, -55°C ~ 155°C operating range). PCB layout modifications are not required.

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

A: The RN73R2ATTD1200D50 is rated at 0.125W (1/8W) versus the original 0.1W (1/10W). This higher rating indicates greater power dissipation capability. For circuits designed around the original 0.1W specification, the substitute part operates within its thermal limits with additional margin, presenting no compatibility issues.

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

A: No. AEC-Q200 qualification represents an additional reliability standard that exceeds general-purpose requirements. Parts qualified to automotive standards are suitable for general-purpose applications without restriction.

Q: Are there any differences in moisture sensitivity or environmental performance?

A: Both parts carry Moisture Sensitivity Level 1 (Unlimited) and feature moisture-resistant construction. Environmental performance characteristics are equivalent across the specified operating temperature range of -55°C to 155°C.

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

A: The RN73R series (represented by RN73R2ATTD1200D50) incorporates Automotive AEC-Q200 qualification and maintains Active product status. The RN73 series (represented by RN732ATTD1200D50) is classified as Obsolete. Both series share identical electrical and mechanical specifications for equivalent resistance values and tolerances.