X60003CIG3-50 Equivalent & Substitute Parts

Part Overview

The X60003CIG3-50 is a Series Voltage Reference IC manufactured by Renesas Electronics Corporation, designed to provide a fixed 5V output with ±0.05% tolerance in a SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part delivers 10 mA output current with low noise characteristics (30µVp-p across 0.1Hz to 10Hz), suitable for precision analog applications requiring stable voltage references.

Substiute Parts

X60003CIG3-50

Renesas Electronics CorporationIn Stock: 1050X60003CIG3-50 Datasheet

Current PartRFQ

MAX6035AAUR50+T

Analog Devices Inc./Maxim IntegratedIn Stock: 4388MAX6035AAUR50+T Datasheet

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MAX6035BAUR50+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1433MAX6035BAUR50+T Datasheet

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MAX6105EUR+T

Analog Devices Inc./Maxim IntegratedIn Stock: 25311MAX6105EUR+T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the X60003CIG3-50 is determined by the following critical parameters:

Core Compatibility Requirements:

• Fixed 5V output voltage
• SOT-23-3 package (identical mechanical and electrical footprint)
• Surface mount configuration
• Minimum 5 mA output current capability
• Operating temperature range overlap with -40°C to 85°C

Tolerance and Precision Considerations: The X60003CIG3-50 specifies ±0.05% tolerance. Substitute parts with wider tolerances (±0.2%, ±0.4%, ±0.5%) remain functionally compatible in applications where the tighter tolerance is not a design requirement. However, tolerance degradation must be evaluated against circuit specifications.

Electrical Parameter Flexibility:

• Temperature coefficient variance is acceptable if circuit design accounts for thermal drift
• Input voltage range differences are acceptable if the application supply remains within the substitute part's specified range
• Supply current differences are acceptable in low-power applications where quiescent current is not critical
• Noise specifications may vary; substitutes with higher noise require evaluation against analog signal integrity requirements

Compliance and Availability: All three substitute parts are active products from Analog Devices Inc./Maxim Integrated with RoHS3 compliance, addressing the obsolescence of the original Renesas component.

Parameter Comparison

Engineering Selection Recommendations

MAX6035AAUR50+T (±0.2% Tolerance) Select this substitute when tolerance requirements allow ±0.2% accuracy. This part offers the closest tolerance match to the original X60003CIG3-50 while maintaining active product status and RoHS3 compliance. The extended input voltage range (6.9V ~ 33V) provides greater design flexibility. Temperature coefficient of 30ppm/°C represents minimal degradation from the original 20ppm/°C specification.

MAX6035BAUR50+T (±0.5% Tolerance) This option is suitable for applications where ±0.5% tolerance is acceptable. It provides the same 10 mA output current as the original part and maintains RoHS3 compliance. The wider tolerance and higher temperature coefficient (75ppm/°C) require circuit-level evaluation but offer cost advantages and extended input voltage range.

MAX6105EUR+T (±0.4% Tolerance, 5 mA Output) This substitute is appropriate for applications requiring 5 mA or less output current. The ±0.4% tolerance and 75ppm/°C temperature coefficient fall between the other options. The input voltage range (5.2V ~ 12.6V) closely matches the original part's 5.1V ~ 9V specification, making it suitable for designs with constrained supply voltages. RoHS3 compliance is confirmed.

Compliance Advantage: All three substitute parts are RoHS3 compliant, addressing the non-compliant status of the obsolete X60003CIG3-50. This compliance is mandatory for new designs in regulated markets.

Frequently Asked Questions (FAQ)

Q: Can MAX6105EUR+T replace X60003CIG3-50 in all applications? A: MAX6105EUR+T is compatible with applications requiring 5 mA or less output current. If the original design draws the full 10 mA specification, this substitute cannot provide adequate current. Verify actual circuit current draw before selection.

Q: What is the impact of tolerance differences on circuit performance? A: The X60003CIG3-50 specifies ±0.05% tolerance, while substitutes range from ±0.2% to ±0.5%. This affects output voltage accuracy. For precision analog circuits (ADC references, precision DACs), tolerance degradation may require recalibration or circuit redesign. For general-purpose applications, the difference is typically negligible.

Q: Are all substitute parts pin-compatible with the original? A: Yes. All substitute parts use the SOT-23-3 package (TO-236-3, SC-59), ensuring identical pinout and mechanical compatibility. Direct PCB replacement is possible without layout modifications.

Q: How does the temperature coefficient affect long-term stability? A: The original part specifies 20ppm/°C; substitutes range from 30ppm/°C to 75ppm/°C. Over a 50°C temperature swing, the MAX6035AAUR50+T introduces approximately 0.15% additional drift, while MAX6035BAUR50+T and MAX6105EUR+T introduce approximately 0.375% drift. Evaluate against circuit temperature stability requirements.

Q: What is the significance of RoHS3 compliance? A: RoHS3 compliance is required for products sold in the European Union and many other regulated markets. The original X60003CIG3-50 is non-compliant, making substitution with RoHS3-compliant parts necessary for regulatory compliance in new designs.

Q: Can I use a substitute with a wider input voltage range in a 5V supply application? A: Yes. The MAX6035 series accepts 6.9V ~ 33V input, which encompasses typical 5V supply rails with tolerance margins. The wider input range provides design flexibility without compromising performance in lower-voltage applications.

Q: Which substitute offers the best noise performance? A: The X60003CIG3-50 specifies 30µVp-p noise (0.1Hz to 10Hz). MAX6105EUR+T provides 60µVp-p, while MAX6035 series parts specify 68µVp-p. For noise-sensitive applications, MAX6105EUR+T is the preferred substitute, though all three introduce higher noise than the original part.