RN731ETTP1962B50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP1962B50 is a 19.6 kOhms ±0.1% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) with moisture resistant construction. Manufactured by KOA Speer Electronics, Inc., this part is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	Value
Resistance	19.6 kOhms
Tolerance	±0.1%
Power Rating	0.063W (1/16W)
Composition	Thin Film
Package / Case	0402 (1005 Metric)
Operating Temperature Range	-55°C ~ 155°C
Temperature Coefficient	±50ppm/°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria (Mandatory Match):

Resistance value: 19.6 kOhms
Tolerance: ±0.1%
Power rating: 0.063W (1/16W)
Package: 0402 (1005 Metric)
Composition: Thin Film
Operating temperature range: -55°C ~ 155°C minimum
Moisture Sensitivity Level: 1 (Unlimited)
RoHS3 Compliance

Secondary Considerations (Enhancement Parameters):

Temperature coefficient (lower values indicate better stability)
Automotive AEC-Q200 certification (optional enhancement)
Anti-sulfur features (optional enhancement)
Product status (active preferred over obsolete)

All substitute parts listed meet the mandatory criteria. Parts are grouped by substitution type: direct equivalents maintain identical specifications, while upgrade substitutes offer improved performance characteristics within the same electrical and mechanical envelope.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	Product Status	Inventory (Pcs)
RN731ETTP1962B50	KOA Speer Electronics	19.6k	±0.1%	0.063	±50	-55 ~ 155	No	Obsolete	1123
RN73R1ETTP1962B50	KOA Speer Electronics	19.6k	±0.1%	0.063	±50	-55 ~ 155	Yes	Active	1089
RT0402BRE0719K6L	YAGEO	19.6k	±0.1%	0.063	±50	-55 ~ 155	No	Active	980
AT0402BRD0719K6L	YAGEO	19.6k	±0.1%	0.063	±25	-55 ~ 155	Yes	Active	1019
CPF0402B19K6E1	TE Connectivity	19.6k	±0.1%	0.063	±25	-55 ~ 155	No	Active	1783
ERA-2AEB1962X	Panasonic	19.6k	±0.1%	0.063	±25	-55 ~ 155	Yes	Active	16753
ERA-2APB1962X	Panasonic	19.6k	±0.1%	0.063	±15	-55 ~ 155	Yes	Active	870
ERA-2ARB1962X	Panasonic	19.6k	±0.1%	0.063	±10	-55 ~ 155	Yes	Active	20268
MCS04020D1962BE100	Vishay Beyschlag	19.6k	±0.1%	0.063	±25	-55 ~ 125	No	Active	750
RG1005N-1962-B-T5	Susumu	19.6k	±0.1%	0.063	±10	-55 ~ 155	Yes	Active	979
RG1005P-1962-B-T5	Susumu	19.6k	±0.1%	0.063	±25	-55 ~ 155	Yes	Active	682

Engineering Selection Recommendations

Direct Equivalent (Preferred for Drop-In Replacement): RN73R1ETTP1962B50 from KOA Speer Electronics maintains identical electrical specifications to the original RN731ETTP1962B50 while offering active product status and automotive AEC-Q200 certification. This part provides the most direct substitution path with no design modifications required.

Active Manufacturer Alternatives (General Applications): RT0402BRE0719K6L (YAGEO) and CPF0402B19K6E1 (TE Connectivity) are active production parts meeting all mandatory electrical and mechanical parameters. Both are suitable for non-automotive applications requiring standard thin film resistor performance.

Automotive-Qualified Substitutes (AEC-Q200 Applications): ERA-2AEB1962X, ERA-2APB1962X, and ERA-2ARB1962X from Panasonic, along with RG1005N-1962-B-T5 and RG1005P-1962-B-T5 from Susumu, carry AEC-Q200 certification. These parts are appropriate for automotive and high-reliability applications. The ERA-2ARB1962X and RG1005N-1962-B-T5 offer superior temperature coefficient performance (±10ppm/°C) for precision circuit applications.

Temperature Range Consideration: MCS04020D1962BE100 from Vishay Beyschlag operates to -55°C ~ 125°C, which is narrower than the original specification of -55°C ~ 155°C. This part is suitable only for applications not requiring the full upper temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for RN731ETTP1962B50?

A: Yes, all listed substitute parts are electrically and mechanically compatible. They share identical resistance (19.6 kOhms), tolerance (±0.1%), power rating (0.063W), package (0402), and operating temperature range (-55°C ~ 155°C). No circuit modifications are required for substitution.

Q: What is the difference between the original part and RN73R1ETTP1962B50?

A: RN73R1ETTP1962B50 is the active production equivalent from the same manufacturer (KOA Speer Electronics). It maintains identical specifications but includes automotive AEC-Q200 certification and is available in Tape & Reel packaging. The original RN731ETTP1962B50 is obsolete.

Q: Which substitute should I choose for automotive applications?

A: For automotive applications, select parts with AEC-Q200 certification: RN73R1ETTP1962B50, AT0402BRD0719K6L, ERA-2AEB1962X, ERA-2APB1962X, ERA-2ARB1962X, RG1005N-1962-B-T5, or RG1005P-1962-B-T5. These parts meet automotive reliability standards.

Q: What does temperature coefficient mean, and why does it vary among substitutes?

A: Temperature coefficient (ppm/°C) indicates how much the resistance value changes per degree Celsius. The original part has ±50ppm/°C. Substitute parts with lower values (±10ppm/°C, ±15ppm/°C, ±25ppm/°C) provide better resistance stability across temperature variations. Lower values are beneficial for precision analog circuits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed are RoHS3 compliant and suitable for applications requiring RoHS compliance.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture-related degradation. All parts, including the original and substitutes, have MSL 1 rating, meaning they do not require special moisture-controlled storage conditions.

Q: Can I use MCS04020D1962BE100 if my circuit operates above 125°C?

A: No. MCS04020D1962BE100 has a maximum operating temperature of 125°C, while the original part and most substitutes operate to 155°C. For applications requiring operation above 125°C, select alternatives with -55°C ~ 155°C rating.

Q: What packaging options are available?

A: The original RN731ETTP1962B50 uses standard packaging. Substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. Verify packaging compatibility with your assembly equipment before procurement.

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