RN731JTTD6900D10 Equivalent & Substitute Parts

Part Overview

The RN731JTTD6900D10 is a 690 Ohms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.063W (1/16W) in a 0603 (1608 Metric) surface mount package. This component is classified as obsolete product status. Locating equivalent and substitute parts is necessary due to discontinued availability and the need for continued supply chain support in production environments.

Substiute Parts

RN731JTTD6900D10

KOA Speer Electronics, Inc.In Stock: 1006RN731JTTD6900D10 Datasheet

Current PartRFQ

RN73R1JTTD6900D10

KOA Speer Electronics, Inc.In Stock: 1148RN73R1JTTD6900D10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN731JTTD6900D10 is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 690 Ohms
• Tolerance: ±0.5%
• Package / Case: 0603 (1608 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature
• RoHS3 Compliance

Allowable Variation:

• Power rating may be equal or higher than the original 0.063W (1/16W)
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) do not disqualify substitution

The substitute part RN73R1JTTD6900D10 meets all mandatory parameters and provides increased power rating (0.1W / 1/10W) with automotive qualification, making it a valid functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1JTTD6900D10 is a direct functional substitute for the obsolete RN731JTTD6900D10. Selection of the substitute part is supported by the following factors:

Compliance & Certification:

• Both parts maintain ROHS3 compliance and REACH unaffected status
• The substitute part includes AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components

Product Availability:

• The main part (RN731JTTD6900D10) is classified as obsolete
• The substitute part (RN73R1JTTD6900D10) maintains active product status with confirmed inventory availability (1106 Pcs New Original In Stock)

Electrical & Mechanical Compatibility:

• All critical electrical parameters (resistance, tolerance, temperature coefficient, operating temperature range) are identical
• Physical dimensions and package footprint are identical, ensuring direct PCB compatibility
• Power rating increase (0.063W to 0.1W) provides design margin without introducing thermal or dimensional conflicts

Packaging Consideration:

• The substitute part is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes

Frequently Asked Questions (FAQ)

Q: Can RN73R1JTTD6900D10 be used as a direct replacement for RN731JTTD6900D10 on existing PCBs?

A: Yes. Both parts share identical package dimensions (0603 / 1608 Metric), footprint, and electrical specifications (690 Ohms ±0.5%, ±10ppm/°C, -55°C ~ 155°C). The substitute part is mechanically and electrically interchangeable.

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

A: The main part is rated at 0.063W (1/16W), while the substitute is rated at 0.1W (1/10W). The higher power rating of the substitute part does not create compatibility issues; it provides additional thermal margin for the same physical package size.

Q: Does the AEC-Q200 certification on the substitute part affect compatibility?

A: No. AEC-Q200 is an automotive qualification standard that indicates enhanced reliability testing and quality assurance. Its presence on the substitute part does not introduce incompatibility; it represents an additional certification benefit.

Q: Are the tolerance and temperature coefficient specifications identical?

A: Yes. Both parts maintain ±0.5% tolerance and ±10ppm/°C temperature coefficient, ensuring equivalent circuit performance and stability across the operating temperature range of -55°C ~ 155°C.

Q: What is the moisture sensitivity level for both parts?

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

Q: Is the substitute part available in the same packaging format?

A: The substitute part is supplied in Tape & Reel (TR) packaging, which is standard for automated assembly. The main part packaging format was not specified in the original documentation.