UP050B333K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP050B333K-A-BZ is a 0.033 µF 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 and substitute components for ongoing design support and production requirements. Substitute parts must maintain the same capacitance and tolerance values while accommodating alternative mounting technologies and voltage ratings within acceptable application parameters.

Substiute Parts

UP050B333K-A-BZ

Taiyo YudenIn Stock: 978UP050B333K-A-BZ Datasheet

Current PartRFQ

HMK107B7333KA-T

Taiyo YudenIn Stock: 751HMK107B7333KA-T Datasheet

SimilarRFQ

A333K15X7RF5TAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 16131A333K15X7RF5TAA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP050B333K-A-BZ is determined by the following critical parameters: capacitance value (0.033 µF), tolerance (±10%), and voltage rating (minimum 50V). The identified substitute parts maintain these core electrical specifications while offering variations in temperature coefficient, operating temperature range, and mounting technology.

Direct Substitute (Same Mounting Technology): The A333K15X7RF5TAA from Vishay Beyschlag/Draloric/BC Components maintains the through-hole axial mounting configuration with identical capacitance, tolerance, and voltage rating. This part features an X7R temperature coefficient with an extended operating temperature range of -55°C ~ 125°C, providing superior thermal stability compared to the B coefficient of the original part.

Alternative Substitute (Different Mounting Technology): The HMK107B7333KA-T from Taiyo Yuden provides equivalent capacitance and tolerance in a surface-mount 0603 (1608 Metric) package with 100V voltage rating. This part features X7R temperature coefficient and extended operating temperature range. Selection of this substitute requires PCB redesign to accommodate surface-mount technology.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No PCB Redesign Required): The A333K15X7RF5TAA is the primary substitute for through-hole axial applications. This part maintains identical mounting footprint and voltage rating while providing improved temperature stability through X7R coefficient and extended operating temperature range (-55°C ~ 125°C). The part is currently in active production status with ROHS3 compliance and substantial inventory availability (16,075 pcs).

For Surface-Mount Applications or Redesign Scenarios: The HMK107B7333KA-T provides equivalent electrical performance in surface-mount technology with higher voltage rating (100V). This part is suitable for applications where PCB redesign is feasible or where surface-mount assembly processes are preferred. The part is in active production status with ROHS3 compliance and adequate inventory (699 pcs).

Both substitute parts maintain the required capacitance tolerance (±10%) and are compliant with ROHS3 environmental standards. Selection between direct and alternative substitutes depends on circuit board assembly technology and thermal operating requirements.

Frequently Asked Questions (FAQ)

Q: Can the A333K15X7RF5TAA directly replace the UP050B333K-A-BZ without circuit modification?

A: Yes. The A333K15X7RF5TAA maintains identical capacitance (0.033 µF), tolerance (±10%), voltage rating (50V), and through-hole axial mounting configuration. No circuit modification is required. The X7R temperature coefficient provides superior thermal stability compared to the original B coefficient.

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

A: B coefficient specifies capacitance change over a limited temperature range (-25°C ~ 85°C). X7R coefficient specifies capacitance change over an extended temperature range (-55°C ~ 125°C) with tighter tolerance specifications. X7R provides more stable capacitance across a wider temperature spectrum.

Q: Why does the HMK107B7333KA-T have a 100V rating when the original part is 50V?

A: Higher voltage rating provides additional design margin and does not affect circuit operation in 50V applications. The 100V rating allows use in circuits with higher voltage transients or future design modifications. Capacitance and tolerance remain identical.

Q: Is the HMK107B7333KA-T compatible with existing through-hole PCB layouts?

A: No. The HMK107B7333KA-T is a surface-mount 0603 package component, requiring PCB redesign and surface-mount assembly processes. The A333K15X7RF5TAA is the appropriate choice for existing through-hole designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the A333K15X7RF5TAA and HMK107B7333KA-T are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original UP050B333K-A-BZ.

Q: What is the moisture sensitivity level difference between the parts?

A: The UP050B333K-A-BZ and HMK107B7333KA-T both have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The A333K15X7RF5TAA has MSL Not Applicable, indicating the component is not affected by moisture sensitivity classifications.