UP050B122K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP050B122K-A-BZ is a 1200 pF ceramic capacitor rated for 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. Substitute parts must maintain electrical performance across the specified operating range while meeting current manufacturing and compliance standards.

Substiute Parts

UP050B122K-A-BZ

Taiyo YudenIn Stock: 821UP050B122K-A-BZ Datasheet

Current PartRFQ

A122K15X7RF5TAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1168A122K15X7RF5TAA Datasheet

DirectRFQ

A122K15X7RF5UAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 942A122K15X7RF5UAA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts A122K15X7RF5TAA and A122K15X7RF5UAA are functionally equivalent to UP050B122K-A-BZ based on the following criteria:

Matched Electrical Parameters:

• Capacitance: 1200 pF (exact match)
• Voltage Rating: 50V (exact match)
• Tolerance: ±10% (exact match)

Mechanical Compatibility:

• Mounting Type: Through Hole Axial (exact match)
• Lead Style: Straight (exact match)
• Package/Case: Axial (exact match)

Temperature Coefficient Consideration: The main part specifies B temperature coefficient (-25°C ~ 85°C operating range). Substitute parts employ X7R temperature coefficient with extended operating range (-55°C ~ 125°C). X7R provides superior temperature stability and broader operational envelope, making it functionally superior for general purpose applications.

Packaging Differentiation:

• A122K15X7RF5TAA: Tape & Reel (TR) packaging
• A122K15X7RF5UAA: Tape & Box (TB) packaging

Both substitutes are manufactured by Vishay Beyschlag/Draloric/BC Components and carry Active product status with current compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility: Both A122K15X7RF5TAA and A122K15X7RF5UAA are direct functional equivalents for UP050B122K-A-BZ in general purpose applications. The core electrical specifications (capacitance, voltage, tolerance) are identical, and mechanical compatibility is confirmed through matching axial through-hole configuration with straight leads.

Compliance Advantages: Substitute parts carry Active product status with ROHS3 compliance and REACH unaffected designation, providing superior long-term supply chain stability compared to the obsolete main part. Both substitutes maintain EAR99 export classification consistency.

Physical Dimension Consideration: Substitute parts measure 0.098" diameter × 0.150" length (2.50mm × 3.80mm) compared to the main part's 0.087" diameter × 0.126" length (2.20mm × 3.20mm). Physical board layout verification is required to confirm fit within existing PCB footprints and component spacing constraints.

Temperature Performance: X7R temperature coefficient in substitute parts extends operating range to -55°C ~ 125°C, providing enhanced thermal margin beyond the main part's -25°C ~ 85°C specification. This represents functional improvement for applications requiring broader temperature operation.

Packaging Selection:

• Select A122K15X7RF5TAA (Tape & Reel) for high-volume automated assembly operations
• Select A122K15X7RF5UAA (Tape & Box) for lower-volume or mixed-component procurement scenarios

Frequently Asked Questions (FAQ)

Q: Can A122K15X7RF5TAA and A122K15X7RF5UAA be used interchangeably with UP050B122K-A-BZ?

A: Yes, both substitute parts are electrically and mechanically equivalent for general purpose applications. The primary difference is packaging format (Tape & Reel versus Tape & Box) and physical dimensions. Verify PCB footprint compatibility before implementation.

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

A: B temperature coefficient specifies capacitance change over -25°C ~ 85°C operating range. X7R temperature coefficient specifies capacitance change over -55°C ~ 125°C operating range with tighter tolerance characteristics. X7R provides superior temperature stability and broader operational envelope.

Q: Are the substitute parts physically compatible with existing PCB layouts designed for UP050B122K-A-BZ?

A: Physical compatibility requires verification. Substitute parts are slightly larger (0.098" Dia × 0.150" L versus 0.087" Dia × 0.126" L). Confirm adequate clearance in component placement, lead spacing, and adjacent component proximity before board assembly.

Q: What compliance certifications do the substitute parts carry?

A: Both A122K15X7RF5TAA and A122K15X7RF5UAA are ROHS3 compliant and REACH unaffected. Both maintain EAR99 export classification. These certifications provide regulatory compliance for current manufacturing and distribution requirements.

Q: Why is the HTSUS code different between the main part and substitutes?

A: The main part (8532.23.0040) and substitute parts (8532.24.0040) reflect different ceramic capacitor classifications based on temperature coefficient designation. This distinction does not affect functional equivalence or substitution validity.

Q: What inventory availability exists for these substitute parts?

A: A122K15X7RF5TAA carries 1077 pieces in stock. A122K15X7RF5UAA carries 917 pieces in stock. Both are available as new original components with Active product status.

Q: Should I select Tape & Reel or Tape & Box packaging?

A: Packaging selection depends on assembly methodology. Tape & Reel (A122K15X7RF5TAA) integrates with automated pick-and-place equipment for high-volume production. Tape & Box (A122K15X7RF5UAA) accommodates manual assembly or lower-volume procurement workflows.