UP025B102K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP025B102K-A-BZ is a 1000 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 alternatives for ongoing production and maintenance applications. Substitute parts must maintain the same capacitance value, voltage rating, and tolerance while accommodating different mounting technologies and temperature coefficient specifications based on application requirements.

Substiute Parts

UP025B102K-A-BZ

Taiyo YudenIn Stock: 89496UP025B102K-A-BZ Datasheet

Current PartRFQ

UMK105B7102KV-F

Taiyo YudenIn Stock: 73127UMK105B7102KV-F Datasheet

SimilarRFQ

A102K15X7RF5TAA

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 21204A102K15X7RF5TAA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP025B102K-A-BZ is determined by the following critical parameters: capacitance value (1000 pF), voltage rating (50V), and tolerance (±10%). These three parameters define functional equivalence in capacitive applications.

The identified substitute parts fall into two distinct categories based on mounting technology:

Category 1: Through-Hole Axial Configuration The A102K15X7RF5TAA maintains the same through-hole axial mounting format as the original part. This substitute preserves mechanical compatibility with existing printed circuit board layouts designed for axial lead components. The primary difference is the temperature coefficient specification (X7R versus B), which provides an extended operating temperature range of -55°C ~ 125°C compared to the original -25°C ~ 85°C specification.

Category 2: Surface Mount MLCC Configuration The UMK105B7102KV-F represents a modern surface-mount alternative with 0402 (1005 Metric) package format. This substitute accommodates applications requiring compact board space and automated assembly processes. The X7R temperature coefficient provides superior temperature stability across a wider operating range.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing and environmental standards.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in Existing Through-Hole Designs: The A102K15X7RF5TAA is the appropriate selection when board layout and assembly processes require axial through-hole components. This part is currently in active production status, ensuring long-term availability. The X7R temperature coefficient provides enhanced thermal stability compared to the original B coefficient specification, extending the operating temperature range to -55°C ~ 125°C. This part is suitable for general-purpose applications and maintains ROHS3 compliance.

For New Design Implementation: The UMK105B7102KV-F is designated for new circuit designs requiring surface-mount technology. This part accommodates modern automated assembly processes and reduces board space requirements through its 0402 package format. Although classified as "Not For New Designs," this part remains available in inventory and maintains full ROHS3 compliance. The X7R temperature coefficient and extended operating range support demanding environmental conditions.

Inventory and Availability: The A102K15X7RF5TAA maintains the highest inventory level (21,145 pcs) among substitute options and active production status, providing the most reliable long-term sourcing path. The UMK105B7102KV-F offers substantial inventory (73,046 pcs) despite its "Not For New Designs" classification.

Frequently Asked Questions (FAQ)

Q: Can the A102K15X7RF5TAA directly replace the UP025B102K-A-BZ in existing circuit boards? A: Yes. Both parts are axial through-hole components with identical capacitance (1000 pF), tolerance (±10%), and voltage rating (50V). The physical dimensions differ slightly (0.098" Dia x 0.150" L versus 0.079" Dia x 0.091" L), but standard axial lead spacing accommodates both configurations on existing PCB layouts designed for through-hole components.

Q: What is the functional difference between B and X7R temperature coefficients? A: The B temperature coefficient specifies a narrower operating range (-25°C ~ 85°C) with defined capacitance variation across this range. The X7R temperature coefficient provides a wider operating range (-55°C ~ 125°C) with tighter capacitance stability. Selection depends on the application's thermal environment and performance requirements.

Q: Is the UMK105B7102KV-F suitable for applications currently using the UP025B102K-A-BZ? A: Functional substitution is possible based on capacitance, voltage, and tolerance parameters. However, the UMK105B7102KV-F requires surface-mount assembly and different PCB layout considerations. This part is appropriate only for applications where board redesign to accommodate 0402 surface-mount technology is feasible.

Q: Why is the UMK105B7102KV-F classified as "Not For New Designs" despite being available? A: This classification indicates the manufacturer's product lifecycle status. The part remains available for existing applications and maintenance purposes but is not recommended for new product development. The A102K15X7RF5TAA is the preferred alternative for new designs requiring through-hole technology.

Q: Are all substitute parts ROHS3 compliant? A: Yes. Both the A102K15X7RF5TAA and UMK105B7102KV-F maintain ROHS3 compliance, ensuring compatibility with current environmental and regulatory requirements.

Q: What is the moisture sensitivity level difference between the parts? A: The UP025B102K-A-BZ and UMK105B7102KV-F both carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. The A102K15X7RF5TAA carries "Not Applicable" MSL rating, typical for through-hole axial components that do not require moisture-controlled storage.