UP050B392K-NACZ Equivalent & Substitute Parts

Part Overview

The UP050B392K-NACZ is a 3900 pF 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 design support and procurement continuity. The part operates across a temperature range of -25°C to 85°C and is suitable for general-purpose applications.

Substiute Parts

UP050B392K-NACZ

Taiyo YudenIn Stock: 1014UP050B392K-NACZ Datasheet

Current PartRFQ

SA051C392KAR

KYOCERA AVXIn Stock: 940SA051C392KAR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP050B392K-NACZ is determined by the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value: 3900 pF
• Tolerance: ±10%
• Mounting type: Through Hole
• Package type: Axial
• Lead style: Straight

Allowable Variations:

• Voltage rating may exceed the original specification (50V minimum required)
• Temperature coefficient may differ (B vs. X7R) provided operating temperature range encompasses the original -25°C to 85°C window
• Physical dimensions may vary within mechanical compatibility constraints
• Product status may transition from obsolete to active

The substitute part SA051C392KAR meets all mandatory criteria while providing enhanced voltage rating and improved temperature stability characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SA051C392KAR serves as a direct functional substitute for the obsolete UP050B392K-NACZ based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical capacitance (3900 pF) and tolerance (±10%), ensuring equivalent circuit performance. The substitute's 100V rating provides additional voltage margin beyond the original 50V specification, enhancing design robustness.

Thermal Performance: The SA051C392KAR's X7R temperature coefficient and extended operating range (-55°C ~ 125°C) encompass the original component's operating window (-25°C ~ 85°C), ensuring thermal stability across all specified conditions.

Mechanical Compatibility: Both parts utilize identical through-hole axial mounting with straight leads, permitting direct board-level substitution without PCB redesign.

Regulatory Compliance: The SA051C392KAR carries active product status with ROHS3 compliance and REACH unaffected designation, supporting current manufacturing and environmental standards. The original component's EAR99 ECCN classification is maintained.

Procurement Advantage: Active inventory status of the substitute part (847 pcs) ensures supply continuity compared to the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can SA051C392KAR be used as a direct replacement for UP050B392K-NACZ without circuit modification?

A: Yes. Both components share identical capacitance (3900 pF), tolerance (±10%), mounting type (through-hole axial), and lead configuration (straight). The substitute's higher voltage rating (100V vs. 50V) and extended temperature range do not require circuit changes and provide additional design margin.

Q: What is the significance of the temperature coefficient difference (B vs. X7R)?

A: Temperature coefficient B exhibits capacitance variation of ±5% across the -25°C to 85°C operating range. X7R provides tighter capacitance stability (±15% across -55°C to 125°C). For applications operating within the original -25°C to 85°C window, both coefficients deliver acceptable performance. X7R offers superior stability for extended temperature applications.

Q: Are the physical dimensions compatible for PCB mounting?

A: The substitute part dimensions (0.091" Dia x 0.118" L) are comparable to the original (0.087" Dia x 0.126" L). Both components fit standard through-hole axial footprints. Verify PCB hole spacing and component clearance for specific board layouts.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The SA051C392KAR carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards. The original component's EAR99 ECCN classification is maintained.

Q: What is the inventory status for procurement planning?

A: The substitute part SA051C392KAR maintains active product status with 847 pcs in stock, ensuring supply availability. The original UP050B392K-NACZ is obsolete with 953 pcs remaining in inventory.

Q: Are there packaging differences between the main part and substitute?

A: The original part is supplied in standard packaging, while the substitute (SA051C392KAR) is packaged in Tape & Reel (TR) format. TR packaging is standard for automated assembly processes and does not affect component electrical or mechanical properties.