UP025B331K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP025B331K-A-BZ is a 330 pF ceramic capacitor rated at 50V with B temperature coefficient, manufactured by Taiyo Yuden in axial through-hole configuration. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part maintains ROHS3 compliance and operates across a temperature range of -25°C to 85°C, serving general-purpose applications in electronic circuits requiring stable capacitance values.

Substiute Parts

UP025B331K-A-BZ

Taiyo YudenIn Stock: 850UP025B331K-A-BZ Datasheet

Current PartRFQ

A331K15X7RF5UAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1109A331K15X7RF5UAA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP025B331K-A-BZ is based on matching the following critical electrical and mechanical parameters:

Electrical Parameters:

• Capacitance value of 330 pF
• Voltage rating of 50V or higher
• Tolerance of ±10%
• Temperature coefficient stability (B or equivalent performance class)

Mechanical Parameters:

• Through-hole axial mounting configuration
• Straight lead style
• Physical dimensions compatible with standard PCB layouts

Compliance Parameters:

• ROHS3 compliance status
• Moisture sensitivity level appropriate for storage and handling

The substitute part A331K15X7RF5UAA meets these criteria with equivalent electrical specifications and compatible physical form factor, while offering extended operating temperature range and active product status.

Parameter Comparison

Engineering Selection Recommendations

The A331K15X7RF5UAA serves as a direct electrical substitute for the obsolete UP025B331K-A-BZ based on matched capacitance, voltage rating, and tolerance specifications. Both parts maintain ROHS3 compliance and through-hole axial mounting compatibility.

Key Considerations:

The substitute part features X7R temperature coefficient classification, which provides superior capacitance stability across temperature variations compared to the B coefficient of the original part. The extended operating temperature range of -55°C to 125°C exceeds the original specification of -25°C to 85°C, offering broader environmental applicability.

Physical dimensions differ between the two parts. The substitute A331K15X7RF5UAA measures 0.098" diameter by 0.150" length (2.50mm x 3.80mm), compared to the original 0.079" diameter by 0.091" length (2.00mm x 2.30mm). PCB layout verification is required to confirm that the larger substitute component accommodates existing through-hole spacing and clearance requirements.

The substitute part maintains active product status with established supply chain availability, addressing the obsolescence constraint of the original part. Both parts carry identical ECCN and HTSUS classifications, maintaining regulatory consistency for procurement and export documentation.

Frequently Asked Questions (FAQ)

Q: Can the A331K15X7RF5UAA be used as a direct replacement for UP025B331K-A-BZ?

A: Yes, the A331K15X7RF5UAA is electrically equivalent with matching 330 pF capacitance, ±10% tolerance, and 50V voltage rating. Both parts are through-hole axial components with straight leads. Physical dimensions differ, requiring PCB layout verification for lead spacing and component clearance compatibility.

Q: What is the difference between B and X7R temperature coefficients?

A: B temperature coefficient specifies capacitance change limits across a defined temperature range. X7R is a higher-performance classification providing tighter capacitance stability across a wider temperature range (-55°C to 125°C versus -25°C to 85°C). For general-purpose applications, X7R offers enhanced reliability across extended environmental conditions.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts maintain ROHS3 compliance and carry identical ECCN (EAR99) and HTSUS (8532.23.0060 and 8532.24.0040 respectively) classifications. No regulatory barriers exist for substitution in compliant applications.

Q: What is the impact of the larger physical dimensions of the substitute part?

A: The substitute part measures 0.098" diameter by 0.150" length compared to the original 0.079" diameter by 0.091" length. Verification of PCB through-hole spacing, lead clearance, and component placement is required before implementation. Standard axial component spacing typically accommodates this size difference.

Q: Why is the original part classified as obsolete?

A: The UP025B331K-A-BZ is marked obsolete by the manufacturer, indicating discontinued production and limited availability. The A331K15X7RF5UAA maintains active product status with established supply chain support, ensuring long-term procurement reliability.

Q: Does moisture sensitivity affect storage or handling requirements?

A: The original part carries MSL 1 (Unlimited), indicating no moisture sensitivity constraints. The substitute part carries Not Applicable MSL status, indicating superior moisture resistance. Both parts require standard component storage practices without specialized humidity control.