UP050B392K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP050B392K-A-BZ is a 3900 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 equivalent substitute components for ongoing design support and procurement continuity. Substitute parts must maintain the same capacitance value and tolerance while meeting or exceeding the voltage and temperature performance specifications of the original design.

Substiute Parts

UP050B392K-A-BZ

Taiyo YudenIn Stock: 883UP050B392K-A-BZ Datasheet

Current PartRFQ

A392K15X7RF5UAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 895A392K15X7RF5UAA Datasheet

DirectRFQ

SA051C392KAR

KYOCERA AVXIn Stock: 940SA051C392KAR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP050B392K-A-BZ is determined by the following critical parameters: capacitance value (3900 pF), tolerance (±10%), voltage rating (minimum 50V), mounting type (through hole), and package configuration (axial with straight leads).

The identified substitute parts maintain identical capacitance and tolerance specifications. Both substitutes feature improved temperature coefficient performance (X7R versus B) and extended operating temperature ranges (-55°C ~ 125°C versus -25°C ~ 85°C). The A392K15X7RF5UAA maintains the 50V rating with enhanced temperature stability, while the SA051C392KAR provides increased voltage headroom at 100V. Physical dimensions vary slightly between parts, requiring verification of board layout compatibility. Both substitutes are active products with current manufacturing status and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

A392K15X7RF5UAA is the direct functional equivalent for applications requiring 50V operation. This part maintains voltage parity with the original design while providing superior temperature stability through X7R coefficient and extended operating range. Active product status ensures long-term availability and supply chain continuity. ROHS3 compliance and current manufacturing support this selection for new designs and legacy system maintenance.

SA051C392KAR is suitable for applications where increased voltage margin is beneficial. The 100V rating provides additional design headroom without affecting circuit performance at 50V operation. Compact physical dimensions (0.091" diameter) offer potential board space advantages. Active status and full RoHS3 compliance support procurement reliability. This part is optimal for designs requiring enhanced voltage derating or future specification upgrades.

Both substitutes are active products with established supply chains, eliminating obsolescence risk associated with the original UP050B392K-A-BZ. Selection between substitutes depends on physical space constraints and voltage margin requirements specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the A392K15X7RF5UAA directly replace the UP050B392K-A-BZ in existing designs?

A: Yes. Both parts share identical capacitance (3900 pF), tolerance (±10%), and voltage rating (50V). The A392K15X7RF5UAA features improved temperature coefficient (X7R) and extended operating range (-55°C ~ 125°C). Physical dimensions differ slightly (0.098" diameter versus 0.087" diameter), requiring board layout verification.

Q: What is the advantage of the SA051C392KAR over the A392K15X7RF5UAA?

A: The SA051C392KAR provides 100V voltage rating compared to 50V, offering increased design margin. Physical size is more compact (0.091" diameter). Both parts maintain identical capacitance and tolerance. Selection depends on available board space and voltage derating requirements.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both A392K15X7RF5UAA and SA051C392KAR are ROHS3 compliant. The original UP050B392K-A-BZ compliance status is not specified in available documentation.

Q: Do the substitute parts have different lead spacing?

A: Lead spacing specifications are not provided for any of the three parts. Physical diameter and length dimensions differ, which may affect board layout compatibility. Mechanical verification against PCB hole patterns is required before implementation.

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

A: Temperature coefficient designations define capacitance variation across operating temperature ranges. B coefficient indicates ±15% capacitance change over -25°C ~ 85°C. X7R coefficient indicates ±15% capacitance change over -55°C ~ 125°C, providing wider temperature stability. Both substitutes employ X7R for enhanced performance across extended temperature ranges.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Substitution suitability for high-frequency applications depends on circuit-specific requirements not provided in component specifications. Frequency response, impedance characteristics, and ESR performance must be evaluated against application requirements.

Q: What packaging formats are available for the substitute parts?

A: A392K15X7RF5UAA is supplied in Tape & Box (TB) format. SA051C392KAR is supplied in Tape & Reel (TR) format. Packaging selection affects procurement quantities and handling procedures.