Equivalent & Substitute Parts for UBT1H331MHD8

Part Overview

The UBT1H331MHD8 is a 330 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is designed for automotive applications with a rated lifetime of 10,000 hours at 125°C. The part is currently active in production status with full ROHS3 compliance and REACH compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and operational ratings to ensure direct functional replacement in circuit designs.

Substiute Parts

UBT1H331MHD8

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UBT1H331MHD8

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the UBT1H331MHD8 is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 50 V (exact match required)
• Polarization: Polar (exact match required)

Mechanical Specifications:

• Lead Spacing: 0.197" (5.00 mm) (exact match required)
• Diameter: 0.492" (12.50 mm) (exact match required)
• Height: 0.866" (22.00 mm) maximum (exact match required)
• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)

Performance Characteristics:

• Lifetime: 10,000 Hrs @ 125°C (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (exact match required)
• Ripple Current @ 120 Hz: 665 mA (exact match required)
• Ripple Current @ 100 kHz: 1.33 A (exact match required)
• Impedance: 70 mOhms (exact match required)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (exact match required)
• REACH Status: REACH Affected (exact match required)

Parameter Comparison

Engineering Selection Recommendations

The UBT1H331MHD8 is an active production component with full regulatory compliance. Both the main part and identified substitute maintain identical electrical, mechanical, and compliance specifications. Selection between equivalent parts should be based on:

Product Availability: Verify current inventory status and lead times from authorized distributors.

Compliance Verification: Confirm ROHS3 and REACH compliance status with the supplier for the specific production lot.

Application Suitability: Confirm the component meets automotive application requirements as specified in the original design documentation.

Thermal Management: Verify that the 10,000-hour lifetime rating at 125°C aligns with the actual operating temperature profile in the target application.

Frequently Asked Questions (FAQ)

Q: What makes UBT1H331MHD8 suitable for automotive applications? A: The component is rated for automotive use with a 10,000-hour lifetime at 125°C operating temperature, ROHS3 compliance, and REACH compliance, meeting automotive industry standards for reliability and environmental regulations.

Q: Can I substitute the UBT1H331MHD8 with a different capacitance value? A: No. Substitution requires exact capacitance matching at 330 µF. Different capacitance values will alter circuit performance and are not acceptable substitutes.

Q: Are there any mechanical constraints for PCB mounting? A: Yes. The component requires through-hole mounting with lead spacing of 0.197" (5.00 mm). PCB pad layout must accommodate the radial can package with 0.492" (12.50 mm) diameter and 0.866" (22.00 mm) maximum height.

Q: What is the significance of the 70 mOhms impedance specification? A: The impedance value defines the component's high-frequency performance characteristics. Substitutes must match this specification to maintain circuit stability and ripple current handling at both 120 Hz and 100 kHz operating frequencies.

Q: Does the ±20% tolerance affect circuit design? A: Yes. The ±20% tolerance range must be accounted for in circuit design calculations. Substitutes must maintain identical tolerance specifications to ensure design margin compliance.

Q: What compliance certifications are required for this component? A: The component must maintain ROHS3 compliance and REACH compliance status. Both certifications are mandatory for automotive applications and must be verified with the supplier.