Equivalent & Substitute Parts for UP050B393K-A-BZ

Part Overview

The UP050B393K-A-BZ is a 0.039 µF ceramic capacitor rated at 50V with B temperature coefficient, manufactured by Taiyo Yuden in axial through-hole configuration. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. The part maintains general-purpose application suitability with ±10% capacitance tolerance and operates across -25°C to 85°C temperature range.

Substiute Parts

UP050B393K-A-BZ

Taiyo YudenIn Stock: 1115UP050B393K-A-BZ Datasheet

Current PartRFQ

A393K15X7RF5TAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 941A393K15X7RF5TAA Datasheet

DirectRFQ

A393K15X7RF5UAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 970A393K15X7RF5UAA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP050B393K-A-BZ is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 0.039 µF
• Voltage rating: 50V minimum
• Tolerance: ±10%
• Mounting type: Through Hole
• Package configuration: Axial
• Lead style: Straight

Acceptable Variation Parameters:

• Temperature coefficient: Substitute parts utilize X7R coefficient, which provides superior temperature stability compared to the original B coefficient specification
• Operating temperature range: Substitute parts extend the upper operating limit to 125°C, exceeding the original -25°C ~ 85°C range
• Physical dimensions: Substitute parts measure 0.098" Dia x 0.150" L (2.50mm x 3.80mm) versus original 0.087" Dia x 0.126" L (2.20mm x 3.20mm), remaining compatible with standard axial through-hole PCB layouts
• Product status: Substitute parts are active production items from Vishay Beyschlag/Draloric/BC Components

Parameter Comparison

Engineering Selection Recommendations

Both A393K15X7RF5TAA and A393K15X7RF5UAA provide direct functional substitution for the obsolete UP050B393K-A-BZ across all critical electrical parameters. The substitute parts are manufactured by Vishay Beyschlag/Draloric/BC Components and maintain active production status, ensuring long-term availability and supply chain continuity.

Compliance Advantages: The substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The original part's compliance status is not specified in available documentation.

Temperature Performance: The X7R temperature coefficient of substitute parts provides superior capacitance stability across the extended -55°C to 125°C operating range compared to the original B coefficient specification. This enhancement is particularly beneficial for applications requiring consistent performance across wider temperature extremes.

Physical Compatibility: The slightly larger physical dimensions of substitute parts (0.098" Dia x 0.150" L versus 0.087" Dia x 0.126" L) remain compatible with standard through-hole PCB layouts designed for axial ceramic capacitors. PCB footprint verification is required for space-constrained applications.

Packaging Options: A393K15X7RF5TAA is supplied in Tape & Reel format, suitable for automated assembly processes. A393K15X7RF5UAA is supplied in Tape & Box format, appropriate for manual assembly or lower-volume production runs.

Frequently Asked Questions (FAQ)

Q: Can A393K15X7RF5TAA and A393K15X7RF5UAA be used interchangeably with UP050B393K-A-BZ?

A: Both substitute parts are electrically equivalent to the original component across all critical parameters: 0.039 µF capacitance, 50V voltage rating, and ±10% tolerance. The primary differences are packaging format (Tape & Reel versus Tape & Box) and physical dimensions. PCB layout compatibility must be confirmed for space-constrained designs.

Q: What is the significance of the temperature coefficient change from B to X7R?

A: The B temperature coefficient exhibits capacitance variation of ±15% across the -25°C to 85°C range. The X7R coefficient provides ±15% variation across the wider -55°C to 125°C range, delivering superior temperature stability. This represents an improvement in performance characteristics for applications subject to temperature fluctuations.

Q: Are the substitute parts suitable for new production designs?

A: Yes. Both A393K15X7RF5TAA and A393K15X7RF5UAA are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for new product development and manufacturing.

Q: What packaging format should be selected for production?

A: A393K15X7RF5TAA (Tape & Reel) is optimized for automated pick-and-place assembly processes. A393K15X7RF5UAA (Tape & Box) is suitable for manual assembly or lower-volume production environments. Selection depends on manufacturing process requirements and production volume.

Q: Are there physical footprint considerations when substituting these parts?

A: The substitute parts measure 0.098" Dia x 0.150" L compared to the original 0.087" Dia x 0.126" L. Both maintain standard axial through-hole configuration. PCB hole spacing and component clearance must be verified for designs with tight spatial constraints.

Q: What is the moisture sensitivity level of the substitute parts?

A: The substitute parts are classified as Not Applicable for moisture sensitivity level, indicating they do not require special moisture control during storage or handling. This represents a simplification compared to the original part's MSL 1 classification.