The Susumu RG1005P-6492-C-T10 is a precision thin film chip resistor engineered for automotive and harsh environment applications requiring tight tolerance control and long-term stability. This component delivers 64.9 kOhms resistance with ±0.25% tolerance in the compact 0402 (1005 Metric) footprint, measuring 1.00mm × 0.50mm × 0.40mm maximum height. The thin film construction provides superior temperature coefficient performance at ±25ppm/°C across the -55°C to 155°C operating range, maintaining consistent electrical characteristics under thermal cycling conditions common in automotive electronics and industrial control systems.
Qualified to AEC-Q200 automotive standards, this resistor incorporates anti-sulfur protection that prevents resistance drift in sulfur-containing atmospheres found in certain geographic regions and industrial environments. The 0.063W power rating in the 0402 package enables surface mount designs where space constraints demand high component density without sacrificing reliability. This precision resistor serves effectively in voltage divider networks, precision current sensing applications, feedback loops for voltage regulators, and signal conditioning circuits where accurate resistance values directly impact system performance and measurement accuracy.
The thin film technology employed in this component offers inherent advantages over thick film alternatives, including lower noise characteristics, better long-term stability, and tighter initial tolerance without trimming. These properties make the RG1005P-6492-C-T10 particularly suitable for analog front-end circuitry, precision measurement instrumentation, and temperature-compensated reference designs. The component's MSL-1 moisture sensitivity rating simplifies PCB assembly processes by eliminating special dry storage requirements and enabling flexible production scheduling. RoHS3 and REACH compliance ensures compatibility with current environmental regulations for global manufacturing.
The dual-terminal configuration with standard 0402 pad layout integrates seamlessly into automated pick-and-place assembly processes while maintaining mechanical stability during reflow soldering. This resistor's combination of precision tolerance, low temperature coefficient, automotive qualification, and anti-sulfur protection addresses demanding applications in engine control units, battery management systems, ADAS sensor circuits, and industrial automation equipment where component reliability directly impacts system uptime and safety performance.
When automotive-grade precision resistors reach obsolescence, design continuity and supply chain stability become primary concerns for ongoing production. The Susumu RG1005P-6492-C-T10, a 64.9kΩ thin film resistor in 0402 package with ±0.25% tolerance and AEC-Q200 qualification, has transitioned to obsolete status while remaining available in limited inventory. This situation prompts evaluation of functionally equivalent alternatives that maintain circuit performance within automotive temperature ranges and harsh environmental conditions.
Potential replacement candidates include RT0402CRD0764K9L and RT0402BRD0764K9L from Yageo, ERA-2AEB6492X from Panasonic, RG1005P-6492-W-T5 from Susumu's own product line, and MCS04020D6492BE100 from Vishay. Each option presents distinct tradeoffs in tolerance specification, temperature coefficient behavior, and anti-sulfur protection levels that directly impact long-term reliability in corrosive environments.
RG1005P-6492-C-T10 (1)
Original Component Baseline Characteristics
The RG1005P-6492-C-T10 establishes performance requirements through several interconnected parameters. Its 64.9kΩ resistance value with ±0.25% tolerance enables precision voltage division and current sensing in automotive control circuits where analog accuracy affects system calibration. The thin film construction method produces low noise characteristics and minimal voltage coefficient compared to thick film alternatives.
AEC-Q200 qualification confirms the component withstands automotive stress testing including temperature cycling from -55°C to 155°C, moisture resistance, and mechanical shock. The ±25ppm/°C temperature coefficient limits resistance drift to approximately 0.325% across the full 210°C operational range, which maintains circuit accuracy in underhood applications where ambient temperatures fluctuate significantly.
Anti-sulfur coating protects the resistive element from sulfur-bearing atmospheric contaminants commonly found in industrial environments and certain geographic regions. Without this protection, sulfur compounds can penetrate the resistor body and corrode internal silver conductors, causing resistance drift or open circuits over months to years of exposure.
The 0402 footprint (1.00mm × 0.50mm) balances miniaturization with manufacturing yield in automated assembly processes. Power dissipation rating of 0.063W at 70°C requires derating calculations for applications operating near thermal limits, as the component's maximum operating temperature of 155°C leaves limited margin in high-temperature environments.
Yageo RT0402CRD0764K9L Analysis
This Yageo component provides identical 64.9kΩ resistance in 0402 package with ±0.25% tolerance matching. The thin film construction maintains comparable noise performance and voltage coefficient characteristics suitable for precision analog applications. AEC-Q200 qualification ensures automotive stress test compliance across the same -55°C to 155°C range.
Temperature coefficient specification of ±100ppm/°C represents the primary technical difference. This translates to approximately 1.3% resistance drift across the full temperature range, four times greater than the original Susumu component. For voltage dividers or current sense applications where the resistor pair tracks thermally, matched temperature coefficients may cancel drift effects. However, absolute resistance accuracy degrades in circuits where the resistor operates at different temperatures from its paired components.
The "CRD" designation indicates Yageo's standard automotive thin film series without specialized anti-sulfur coating. In sulfur-free environments such as sealed automotive modules with conformal coating, this omission presents minimal risk. Deployment in unsealed industrial control panels or geographic regions with high atmospheric sulfur content requires environmental assessment, as the absence of anti-sulfur protection introduces a long-term reliability uncertainty not present in the original specification.
Power rating of 0.063W matches the original component, requiring identical thermal derating calculations. The component's widespread availability and competitive pricing position it as a direct functional replacement where the temperature coefficient relaxation and environmental protection differences align with application requirements.
Yageo RT0402BRD0764K9L Evaluation
The RT0402BRD0764K9L maintains 64.9kΩ resistance with ±0.1% tolerance, tightening the resistance specification by 60% compared to the original ±0.25% tolerance. This improvement benefits precision measurement circuits where initial accuracy directly affects calibration range or eliminates trim requirements in production.
Temperature coefficient of ±50ppm/°C falls between the original Susumu component (±25ppm/°C) and the RT0402CRD0764K9L (±100ppm/°C). Across the -55°C to 155°C range, this produces approximately 0.65% thermal drift, representing a 2× degradation from the original specification. Applications with narrow operating temperature ranges or those implementing software temperature compensation can absorb this difference without functional impact.
The "BRD" product code similarly indicates standard thin film construction without anti-sulfur coating. Combined with the tighter initial tolerance, this component suits sealed automotive applications where environmental exposure is controlled and the improved initial accuracy reduces manufacturing variation.
The tolerance-temperature coefficient tradeoff presents a selection decision point: applications limited by initial accuracy benefit from the ±0.1% specification despite the relaxed temperature coefficient, while circuits operating across wide temperature ranges without compensation require the lower drift rate of alternative options.
Panasonic ERA-2AEB6492X Characteristics
Panasonic's ERA-2AEB6492X delivers 64.9kΩ resistance in 0402 format with ±0.1% tolerance matching the tighter specification of the RT0402BRD0764K9L. The ERA-2A series specifically targets automotive applications with AEC-Q200 qualification and thin film construction optimized for low noise and voltage coefficient performance.
Temperature coefficient of ±25ppm/°C exactly matches the original Susumu component, preserving thermal stability across the full -55°C to 155°C operating range. This combination of improved initial tolerance and maintained temperature coefficient makes the ERA-2AEB6492X suitable for precision applications where both parameters affect overall circuit accuracy.
Anti-sulfur protection is incorporated in the ERA-2A series construction, addressing long-term reliability in harsh environments. The sulfur-resistant design combines with improved tolerance to provide a direct upgrade path from the original specification, assuming power dissipation and mechanical requirements remain satisfied.
Power rating of 0.063W maintains consistency with the original component. The ERA-2A series employs Panasonic's automotive-grade electrode and passivation design, which provides moisture resistance and mechanical robustness for high-reliability applications including powertrain control modules and safety systems.
Susumu RG1005P-6492-W-T5 Compatibility
The RG1005P-6492-W-T5 originates from the same Susumu RG series as the original component, differing primarily in packaging tape format (T5 versus T10 reel size) and potentially minor process improvements reflected in the "W" suffix versus "C" suffix designation. Electrical specifications including 64.9kΩ resistance, ±0.25% tolerance, and ±25ppm/°C temperature coefficient remain identical.
Anti-sulfur protection and AEC-Q200 qualification carry forward from the RG series baseline design. The thin film resistive element, electrode structure, and passivation layers follow the same manufacturing process, ensuring consistent noise performance, voltage coefficient, and long-term stability characteristics.
This option provides the closest match to the original component, eliminating tolerance or temperature coefficient compromises present in alternative manufacturers' offerings. The packaging difference affects only procurement and assembly logistics, with T5 reels typically holding 5,000 pieces versus 10,000 pieces for T10 reels, potentially impacting inventory management for high-volume production.
Availability verification becomes the primary selection factor, as the RG series has transitioned to limited production status. If supply continuity cannot be guaranteed for the product lifecycle, the Susumu option serves as a short-term bridge solution while qualifying alternatives with broader availability.
Vishay MCS04020D6492BE100 Profile
Vishay's MCS04020D6492BE100 delivers 64.9kΩ resistance in 0402 package through the MCSV series thin film construction. The ±0.1% tolerance specification tightens initial accuracy while the temperature coefficient of ±25ppm/°C maintains thermal stability matching the original component.
This combination positions the Vishay component similarly to the Panasonic ERA-2AEB6492X, providing improved initial tolerance without sacrificing temperature stability. AEC-Q200 qualification confirms automotive stress test compliance across -55°C to 155°C operation.
The MCS series incorporates moisture-resistant construction and mechanical reinforcement for harsh environment deployment. Anti-sulfur protection is not explicitly called out in standard MCSV series specifications, requiring verification with Vishay technical documentation or direct inquiry for applications where sulfur exposure represents a reliability concern.
Power rating of 0.063W aligns with other options in this comparison. Vishay's global distribution network and established automotive supply chain relationships support long-term availability for production applications requiring multi-year component sourcing stability.
Performance Comparison Summary
Tolerance and temperature coefficient represent the primary discriminating factors across replacement options. The original Susumu RG1005P-6492-C-T10 establishes a ±0.25% tolerance with ±25ppm/°C temperature coefficient baseline. The Yageo RT0402CRD0764K9L maintains tolerance while relaxing temperature coefficient to ±100ppm/°C. The RT0402BRD0764K9L tightens tolerance to ±0.1% while compromising temperature coefficient to ±50ppm/°C.
Both the Panasonic ERA-2AEB6492X and Vishay MCS04020D6492BE100 improve tolerance to ±0.1% while preserving the ±25ppm/°C temperature coefficient, offering net specification improvements over the original component. The Susumu RG1005P-6492-W-T5 maintains identical specifications with only packaging format differences.
Anti-sulfur protection separates components for harsh environment applications. The original Susumu, Panasonic ERA-2AEB6492X, and Susumu RG1005P-6492-W-T5 explicitly provide sulfur-resistant construction. The Yageo options lack this feature, limiting deployment to controlled environments. The Vishay MCS04020D6492BE100 requires verification for sulfur resistance confirmation.
All components meet AEC-Q200 automotive qualification and operate across -55°C to 155°C. Power ratings uniformly specify 0.063W, requiring identical thermal derating considerations. Footprint compatibility at 0402 (1.00mm × 0.50mm) ensures mechanical interchangeability without PCB redesign.
Thermal Performance Validation Approach
Using the Panasonic ERA-2AEB6492X as a validation example demonstrates the verification process applicable to any replacement component. Initial resistance measurement at 25°C establishes the baseline value, which should fall within the ±0.1% tolerance window (64.8351kΩ to 64.9649kΩ for this component).
Temperature cycling from -55°C to 155°C while monitoring resistance reveals the actual temperature coefficient behavior. At -55°C (80°C below reference), the ±25ppm/°C specification allows resistance change up to ±0.13% (±84Ω). At 155°C (130°C above reference), permitted drift extends to ±0.21% (±136Ω). Measured values should remain within these boundaries across multiple thermal cycles to confirm specification compliance.
For circuits where the resistor dissipates significant power, thermal derating calculations apply. At 0.063W maximum power and typical 0402 thermal resistance of 200°C/W from junction to ambient, self-heating reaches approximately 12.6°C at full power. In a 125°C ambient automotive environment, junction temperature reaches 137.6°C, remaining within the 155°C maximum rating with 17.4°C margin. Applications requiring operation near 155°C ambient must reduce power dissipation proportionally.
Circuit-level validation requires measuring the actual voltage or current the resistor controls. For voltage divider applications, output voltage at multiple temperatures confirms that temperature coefficient drift remains within acceptable limits. Current sensing circuits benefit from comparison between the original and replacement resistor under identical thermal conditions, verifying that measurement accuracy degrades within tolerable bounds.
Selection Decision Framework
Applications requiring maximum thermal stability across the full automotive temperature range should prioritize components maintaining the ±25ppm/°C temperature coefficient. This narrows selection to the Panasonic ERA-2AEB6492X, Vishay MCS04020D6492BE100, or Susumu RG1005P-6492-W-T5. Among these, the Panasonic and Vishay options provide improved ±0.1% initial tolerance, reducing manufacturing variation.
Harsh environment deployment including potential sulfur exposure requires verified anti-sulfur protection. The Panasonic ERA-2AEB6492X and Susumu RG1005P-6492-W-T5 explicitly meet this requirement. The Vishay MCS04020D6492BE100 necessitates confirmation, while the Yageo options suit sealed or controlled environments only.
Cost-sensitive applications operating in narrow temperature ranges can accept the temperature coefficient compromise of the Yageo RT0402BRD0764K9L, gaining improved ±0.1% tolerance at ±50ppm/°C drift. This suits sealed automotive applications where the temperature range spans 40°C to 80°C rather than the full specification range, limiting absolute drift to manageable levels.
Long-term supply chain stability favors manufacturers with established automotive component programs and global distribution. Panasonic's ERA-2A series and Vishay's MCSV series represent ongoing production lines with multi-year availability commitments, while the Susumu RG series faces continued obsolescence risk.
