RN732ATTD3003D25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3003D25 is a 300 kOhms ±0.5% thin film chip resistor in 0805 (2012 Metric) package with 0.1W power rating. This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part features moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

Substiute Parts

RN732ATTD3003D25

KOA Speer Electronics, Inc.In Stock: 771RN732ATTD3003D25 Datasheet

Current PartRFQ

RN73R2ATTD3003D25

KOA Speer Electronics, Inc.In Stock: 1152RN73R2ATTD3003D25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3003D25 is determined by the following critical parameters:

Electrical Parameters:

• Resistance value: 300 kOhms (must match exactly)
• Tolerance: ±0.5% (must match exactly)
• Temperature Coefficient: ±25ppm/°C (must match exactly)
• Operating Temperature Range: -55°C ~ 155°C (must match or exceed)

Mechanical Parameters:

• Package / Case: 0805 (2012 Metric) (must match for PCB compatibility)
• Composition: Thin Film (must match for performance characteristics)
• Number of Terminations: 2 (must match)

Functional Parameters:

• Features: Moisture Resistant (must be present)

The substitute part RN73R2ATTD3003D25 satisfies all critical substitution criteria. While the power rating differs (0.125W versus 0.1W), the higher power rating of the substitute represents a functional upgrade that does not compromise circuit performance in applications designed for the original 0.1W specification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3003D25 is the direct substitute for the obsolete RN732ATTD3003D25. Selection of this substitute is supported by the following factors:

Product Status: The substitute part maintains Active status, ensuring long-term availability and supply chain continuity compared to the Obsolete main part.

Compliance & Certifications: Both parts maintain ROHS3 compliance and REACH Unaffected status. The substitute additionally carries AEC-Q200 automotive qualification, providing enhanced reliability documentation for applications requiring automotive-grade components.

Electrical & Mechanical Compatibility: All critical electrical parameters (resistance, tolerance, temperature coefficient, operating temperature range) are identical. Mechanical compatibility is assured through identical package dimensions, termination count, and physical footprint.

Power Rating Consideration: The substitute's 0.125W power rating exceeds the original 0.1W specification. This represents a functional upgrade that provides additional thermal margin without introducing compatibility issues in circuits designed for the lower power rating.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD3003D25 be used as a direct replacement for RN732ATTD3003D25 on existing PCBs?

A: Yes. Both parts share identical package dimensions (0805 / 2012 Metric), footprint, and termination configuration. PCB layout modifications are not required.

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

A: The substitute's higher power rating provides additional thermal dissipation capability. In applications designed for 0.1W operation, the 0.125W substitute will operate at lower junction temperature, enhancing reliability without affecting circuit function.

Q: Are the electrical characteristics identical between the two parts?

A: Yes. Resistance (300 kOhms), tolerance (±0.5%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C) are identical across both parts.

Q: Why does the substitute have AEC-Q200 qualification while the main part does not?

A: AEC-Q200 is an automotive industry qualification standard. The substitute part RN73R2ATTD3003D25 belongs to the RN73R series, which includes automotive-grade variants. This qualification is an additional feature that does not affect compatibility with non-automotive applications.

Q: What is the packaging difference between the two parts?

A: The main part RN732ATTD3003D25 is supplied in standard packaging. The substitute RN73R2ATTD3003D25 is supplied in Tape & Reel (TR) format, which is standard for high-volume manufacturing and automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both RN732ATTD3003D25 and RN73R2ATTD3003D25 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.