UP050B183K-NACZ Equivalent & Substitute Parts

Part Overview

The UP050B183K-NACZ is a 0.018 µF ceramic capacitor rated for 50V operation, manufactured by Taiyo Yuden with B-type temperature coefficient characteristics. This component is designed for general-purpose through-hole applications in axial configuration. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

UP050B183K-NACZ

Taiyo YudenIn Stock: 1121UP050B183K-NACZ Datasheet

Current PartRFQ

A183K15X7RF5UAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1071A183K15X7RF5UAA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP050B183K-NACZ is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance value: 0.018 µF (exact match required)
• Voltage rating: 50V minimum (equal or higher acceptable)
• Tolerance: ±10% (matching tolerance band)

Mechanical Equivalence Requirements:

• Mounting type: Through hole (axial configuration)
• Lead style: Straight leads
• Package case: Axial ceramic capacitor

Environmental & Compliance Requirements:

• Moisture sensitivity level: 1 or Not Applicable
• ECCN classification: EAR99

The substitute part A183K15X7RF5UAA meets all electrical and mechanical requirements. While the temperature coefficient differs (X7R versus B), both coefficients are within acceptable ranges for general-purpose applications and do not prevent functional substitution. The substitute part operates across a wider temperature range (-55°C ~ 125°C versus -25°C ~ 85°C), providing enhanced thermal performance.

Parameter Comparison

Engineering Selection Recommendations

The A183K15X7RF5UAA is a direct functional substitute for the obsolete UP050B183K-NACZ. Both components share identical electrical specifications (0.018 µF, 50V, ±10% tolerance) and mechanical configuration (through-hole axial mounting with straight leads).

Product Status Consideration: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance Status: Both parts carry EAR99 ECCN classification. The substitute part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Physical Dimensions: The substitute part exhibits slightly larger dimensions (0.098" Dia x 0.150" L versus 0.087" Dia x 0.126" L). PCB layout verification is required to confirm clearance compatibility in space-constrained applications.

Temperature Performance: The X7R temperature coefficient of the substitute part provides superior stability across a wider operating range (-55°C ~ 125°C) compared to the B-coefficient main part (-25°C ~ 85°C), offering enhanced performance margin in thermal cycling environments.

Frequently Asked Questions (FAQ)

Q: Can the A183K15X7RF5UAA directly replace the UP050B183K-NACZ without circuit modification?

A: Yes. Both components share identical capacitance (0.018 µF), voltage rating (50V), and tolerance (±10%). The electrical performance in general-purpose applications is equivalent. Physical dimensions require verification for PCB layout compatibility.

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

A: Temperature coefficient defines capacitance variation across operating temperature ranges. B-coefficient permits ±15% change over -25°C to 85°C. X7R permits ±15% change over -55°C to 125°C. For general-purpose applications within the original operating range, both coefficients deliver equivalent performance. The X7R substitute provides additional thermal stability margin.

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

A: The substitute part is slightly larger (0.098" Dia x 0.150" L versus 0.087" Dia x 0.126" L). Verify PCB hole spacing, component clearance to adjacent parts, and lead bend radius compatibility before installation. Both parts feature straight leads suitable for standard through-hole mounting.

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

A: The A183K15X7RF5UAA is supplied in Tape & Box (TB) packaging format. Verify packaging compatibility with receiving and assembly processes.

Q: Are both parts RoHS compliant?

A: The substitute part A183K15X7RF5UAA is ROHS3 compliant. The main part UP050B183K-NACZ does not specify RoHS status. Current procurement standards typically require ROHS3 compliance, making the substitute part preferable for new designs and production runs.

Q: What is the moisture sensitivity level difference?

A: The main part carries MSL 1 (Unlimited), indicating no moisture sensitivity. The substitute part lists MSL as Not Applicable, also indicating no moisture-related handling restrictions. Both parts are suitable for standard storage and assembly conditions.