RN731ETTP7151F50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP7151F50 is a 7.15 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Resistance	7.15 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

Resistance value: 7.15 kOhms (exact match required)
Package / Case: 0402 (1005 Metric) (exact match required)
Power rating: minimum 0.063W (1/16W)
Composition: Thin Film
Operating temperature range: minimum -55°C ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Tolerance Flexibility: Substitute parts with tolerance specifications equal to or tighter than ±1% are acceptable. Parts with ±0.5%, ±0.25%, or ±0.1% tolerance exceed the original specification and provide enhanced precision.

Temperature Coefficient: Parts with temperature coefficient of ±50ppm/°C or better (lower absolute value) are acceptable substitutes.

Automotive and Enhanced Features: Parts with AEC-Q200 automotive qualification, anti-sulfur properties, or moisture resistance features are upgrades that maintain full compatibility while providing additional reliability attributes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Product Status	Features
RN731ETTP7151F50	KOA Speer Electronics	7.15 kΩ	±1%	0.063	±50	0402	Obsolete	Moisture Resistant
RN73R1ETTP7151F50	KOA Speer Electronics	7.15 kΩ	±1%	0.063	±50	0402	Active	Automotive AEC-Q200, Moisture Resistant
RT0402FRE077K15L	YAGEO	7.15 kΩ	±1%	0.063	±50	0402	Active	—
AT0402DRE077K15L	YAGEO	7.15 kΩ	±0.5%	0.063	±50	0402	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant
MCS04020C7151FE000	Vishay Beyschlag/Draloric/BC Components	7.15 kΩ	±1%	0.063	±50	0402	Active	Anti-Sulfur
RNCF0402BTC7K15	Stackpole Electronics Inc	7.15 kΩ	±0.1%	0.1	±50	0402	Active	Automotive AEC-Q200
RNCF0402DTC7K15	Stackpole Electronics Inc	7.15 kΩ	±0.5%	0.1	±50	0402	Active	Automotive AEC-Q200
RT0402BRE077K15L	YAGEO	7.15 kΩ	±0.1%	0.063	±50	0402	Active	—
RT0402CRE077K15L	YAGEO	7.15 kΩ	±0.25%	0.063	±50	0402	Active	—
RT0402DRE077K15L	YAGEO	7.15 kΩ	±0.5%	0.063	±50	0402	Active	—
RT0402FRD077K15L	YAGEO	7.15 kΩ	±1%	0.063	±25	0402	Active	—

Engineering Selection Recommendations

Direct Replacement (Equivalent Tolerance and Features): RN73R1ETTP7151F50 from KOA Speer Electronics is the primary equivalent. It maintains the original ±1% tolerance and 0.063W power rating while adding automotive AEC-Q200 qualification. Product status is active, ensuring continued availability.

Standard Substitutes (Matching Core Specifications): RT0402FRE077K15L (YAGEO) and MCS04020C7151FE000 (Vishay) are functionally equivalent with ±1% tolerance and 0.063W power rating. Both are active products with full RoHS3 compliance and MSL 1 rating.

Enhanced Precision Substitutes (Tighter Tolerance): RT0402BRE077K15L, RT0402CRE077K15L, and RT0402DRE077K15L (YAGEO) offer tolerance specifications of ±0.1%, ±0.25%, and ±0.5% respectively, providing improved accuracy while maintaining the 0402 package and 0.063W power rating. These are suitable for applications requiring higher precision.

High-Reliability Substitutes (Increased Power Rating): RNCF0402BTC7K15 and RNCF0402DTC7K15 (Stackpole Electronics) provide 0.1W (1/10W) power rating with ±0.1% and ±0.5% tolerance respectively. Both carry AEC-Q200 automotive qualification. The increased power rating provides thermal margin for demanding applications.

Temperature Coefficient Consideration: RT0402FRD077K15L features a ±25ppm/°C temperature coefficient, which is superior to the original ±50ppm/°C specification, offering improved temperature stability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with tighter tolerance than the original ±1%? A: Yes. Parts with ±0.5%, ±0.25%, or ±0.1% tolerance are fully compatible and provide enhanced precision. Tighter tolerance specifications exceed the original requirement and do not compromise circuit functionality.

Q: What is the significance of AEC-Q200 qualification on substitute parts? A: AEC-Q200 is an automotive industry standard qualification. Parts bearing this certification have undergone rigorous reliability testing. For non-automotive applications, AEC-Q200 qualified parts provide additional assurance of quality and reliability but are not required for compatibility.

Q: Are parts with higher power ratings (0.1W vs. 0.063W) compatible? A: Yes. Higher power ratings are compatible and provide additional thermal margin. The 0402 package dimensions remain identical. A 0.1W rated part can be used in place of a 0.063W rated part without any circuit modifications.

Q: Does the 0402 package dimension vary between manufacturers? A: No. The 0402 (1005 Metric) package is a standardized IPC specification. All parts listed maintain identical footprint dimensions: 0.039" L × 0.020" W (1.00mm × 0.50mm). PCB layout compatibility is guaranteed across all substitutes.

Q: What is MSL 1 (Unlimited) moisture sensitivity? A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts carry MSL 1 rating, ensuring identical moisture management requirements.

Q: Can I substitute a part with a lower temperature coefficient? A: Yes. A lower temperature coefficient (e.g., ±25ppm/°C vs. ±50ppm/°C) indicates better temperature stability and is a compatible upgrade. The operating temperature range remains -55°C ~ 155°C across all listed parts.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All parts listed in this reference carry ROHS3 compliance certification, matching the original component's environmental compliance status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message