RN732BTTD3443D100 Equivalent & Substitute Parts

Part Overview

The RN732BTTD3443D100 is a 344 kOhms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.125W (1/8W) in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732BTTD3443D100

KOA Speer Electronics, Inc.In Stock: 849RN732BTTD3443D100 Datasheet

Current PartRFQ

RN73R2BTTD3443D100

KOA Speer Electronics, Inc.In Stock: 1193RN73R2BTTD3443D100 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732BTTD3443D100 is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 344 kOhms
• Tolerance: ±0.5%
• Package / Case: 1206 (3216 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature

Allowable Variation Parameters:

• Power Rating: The substitute part may have equal or higher power rating (0.125W or greater)
• Product Status: Active status parts are acceptable replacements for obsolete parts
• Packaging Format: Different packaging configurations (Tape & Reel vs. bulk) are interchangeable for the same component
• Additional Certifications: Automotive AEC-Q200 qualification is an enhancement that does not restrict substitution

The RN73R2BTTD3443D100 meets all mandatory matching criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2BTTD3443D100 is a direct substitute for the RN732BTTD3443D100 based on the following engineering criteria:

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility. The substitute part carries additional Automotive AEC-Q200 qualification, which represents enhanced reliability screening and does not restrict its use in non-automotive applications.

Product Status Transition: The main part is classified as obsolete, while the substitute is active production status. Selection of the RN73R2BTTD3443D100 ensures continued component availability and supply chain sustainability.

Electrical and Mechanical Equivalence: Identical resistance value (344 kOhms), tolerance (±0.5%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C) guarantee functional equivalence in circuit applications. The increased power rating (0.25W vs. 0.125W) provides additional thermal margin without affecting circuit performance.

Physical Compatibility: Identical 1206 (3216 Metric) package dimensions and termination configuration ensure direct PCB footprint compatibility and assembly process compatibility.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2BTTD3443D100 be used as a direct replacement for the RN732BTTD3443D100 in existing designs?

A: Yes. The substitute part maintains identical electrical specifications (344 kOhms ±0.5%, ±100ppm/°C, -55°C ~ 155°C operating range) and physical package (1206 / 3216 Metric). The increased power rating (0.25W vs. 0.125W) is a non-restrictive enhancement that does not affect circuit operation.

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

A: The RN73R2BTTD3443D100 is rated at 0.25W (1/4W) compared to the main part's 0.125W (1/8W). This higher rating provides additional thermal dissipation capability. In applications where the original 0.125W rating was adequate, the higher rating presents no disadvantage and may improve thermal performance margins.

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

A: No. AEC-Q200 qualification represents additional reliability screening and quality assurance. This certification does not restrict the part's use in non-automotive applications and indicates enhanced component reliability.

Q: Are the physical dimensions and PCB footprints identical?

A: Yes. Both parts are packaged in 1206 (3216 Metric) format with identical dimensions: 0.126" L x 0.063" W (3.20mm x 1.60mm) and maximum seated height of 0.028" (0.70mm). PCB footprints and assembly processes are fully compatible.

Q: What is the difference between the packaging formats listed?

A: The main part (RN732BTTD3443D100) is supplied in standard packaging, while the substitute (RN73R2BTTD3443D100) is supplied in Tape & Reel (TR) format. Both formats contain identical components; the difference is in the delivery and handling method. Tape & Reel format is standard for automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732BTTD3443D100 and RN73R2BTTD3443D100 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.