RN731JTTD3402F10 Equivalent & Substitute Parts

Part Overview

The RN731JTTD3402F10 is a 34 kOhms ±1% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0603 (1608 Metric) package format with 0.063W (1/16W) power rating. This component features moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

The RN731JTTD3402F10 is classified as obsolete. Identifying equivalent 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

RN731JTTD3402F10

KOA Speer Electronics, Inc.In Stock: 1207RN731JTTD3402F10 Datasheet

Current PartRFQ

RN73R1JTTD3402F10

KOA Speer Electronics, Inc.In Stock: 1095RN73R1JTTD3402F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN731JTTD3402F10 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 34 kOhms
• Tolerance: ±1%
• Package / Case: 0603 (1608 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistance: Required
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power rating than the original 0.063W (1/16W)
• Product Status: Active status preferred for long-term availability
• Certifications: Additional automotive or industrial certifications (such as AEC-Q200) are permissible enhancements

The RN73R1JTTD3402F10 qualifies as a direct substitute based on matching all mandatory parameters while providing an increased power rating of 0.1W (1/10W) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1JTTD3402F10 is the qualified substitute for the obsolete RN731JTTD3402F10 based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical resistance (34 kOhms), tolerance (±1%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's increased power rating of 0.1W (1/10W) compared to the original 0.063W (1/16W) provides enhanced thermal margin without affecting circuit performance.

Physical Compatibility: Both components utilize the 0603 (1608 Metric) package with identical physical dimensions (0.063" L x 0.031" W, 1.60mm x 0.80mm) and maximum seated height (0.022" / 0.55mm), ensuring direct board-level compatibility.

Regulatory Compliance: Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and reliability standards. The substitute includes AEC-Q200 automotive qualification, providing additional assurance for applications requiring automotive-grade components.

Supply Chain Status: The RN73R1JTTD3402F10 maintains active product status with current inventory availability, addressing the obsolescence of the original part and ensuring long-term procurement viability.

Frequently Asked Questions (FAQ)

Q: Can the RN73R1JTTD3402F10 be used as a direct replacement for the RN731JTTD3402F10 in existing designs?

A: Yes. The RN73R1JTTD3402F10 is electrically and physically compatible with the RN731JTTD3402F10. Both components share identical resistance, tolerance, temperature coefficient, operating temperature range, package dimensions, and moisture resistance characteristics. No circuit redesign is required.

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

A: The RN73R1JTTD3402F10 is rated at 0.1W (1/10W) compared to the original 0.063W (1/16W). A higher power rating indicates greater thermal dissipation capability. This substitution is valid because the substitute can safely handle the same or lower power dissipation as the original part, providing additional thermal margin without affecting circuit operation.

Q: Are there packaging differences between these two parts?

A: No. Both the RN731JTTD3402F10 and RN73R1JTTD3402F10 are supplied in 0603 (1608 Metric) package format with identical physical dimensions and termination configuration. The substitute is available in Tape & Reel (TR) packaging, which is standard for production environments.

Q: What does the AEC-Q200 certification on the substitute part indicate?

A: AEC-Q200 is an automotive industry qualification standard for passive components. The RN73R1JTTD3402F10's AEC-Q200 rating indicates compliance with automotive reliability and quality requirements. This certification is an enhancement that does not restrict use in non-automotive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN731JTTD3402F10 and RN73R1JTTD3402F10 are ROHS3 compliant, meeting European Union Restriction of Hazardous Substances regulations. Both components also carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.