UP050B473K-A-BZ Equivalent & Substitute Parts

Part Overview

The UP050B473K-A-BZ is a 0.047 µF ceramic capacitor rated for 50V with B temperature coefficient, manufactured by Taiyo Yuden in axial through-hole configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production support and maintenance applications. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), making it suitable for general-purpose filtering and coupling applications across industrial and consumer electronics.

Key Parameters

Parameter	Value
Capacitance	0.047 µF
Voltage Rating	50V
Tolerance	±10%
Temperature Coefficient	B
Operating Temperature Range	-25°C ~ 85°C
Mounting Type	Through Hole
Package Type	Axial
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the UP050B473K-A-BZ is determined by the following critical parameters: capacitance value (0.047 µF), voltage rating (50V minimum), tolerance (±10%), and mounting configuration. The main part specifies axial through-hole mounting with B temperature coefficient operation across -25°C to 85°C.

Two substitute parts are identified based on electrical equivalence:

A473K15X7RF5TAA (Vishay Beyschlag/Draloric/BC Components): Maintains identical capacitance, voltage rating, and tolerance specifications. Provides axial through-hole mounting with X7R temperature coefficient, extending operating range to -55°C ~ 125°C. Active product status ensures continued availability. Direct form-factor compatibility with the original part.

UMK105B7473KV-FR (Taiyo Yuden): Matches capacitance, voltage rating, and tolerance. Implements surface-mount 0402 (1005 Metric) package with X7R temperature coefficient. Represents functional electrical equivalence for applications permitting PCB redesign to accommodate MLCC mounting. Not recommended for new designs per manufacturer status.

Parameter Comparison

Parameter	UP050B473K-A-BZ	A473K15X7RF5TAA	UMK105B7473KV-FR
Manufacturer	Taiyo Yuden	Vishay Beyschlag/Draloric/BC Components	Taiyo Yuden
Capacitance	0.047 µF	0.047 µF	0.047 µF
Voltage Rating	50V	50V	50V
Tolerance	±10%	±10%	±10%
Temperature Coefficient	B	X7R	X7R
Operating Temperature	-25°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Surface Mount, MLCC
Package Type	Axial	Axial	0402 (1005 Metric)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Not For New Designs

Engineering Selection Recommendations

Primary Substitute: A473K15X7RF5TAA

The A473K15X7RF5TAA represents the optimal substitute for direct replacement applications. This Vishay component maintains identical electrical specifications (0.047 µF, 50V, ±10% tolerance) and preserves axial through-hole mounting compatibility, eliminating PCB redesign requirements. Active product status ensures long-term availability and supply chain stability. X7R temperature coefficient provides superior stability across the extended operating range (-55°C ~ 125°C) compared to the original B coefficient specification. ROHS3 compliance and REACH unaffected status satisfy regulatory requirements equivalent to the original part.

Secondary Substitute: UMK105B7473KV-FR

The UMK105B7473KV-FR provides electrical equivalence for applications where surface-mount technology integration is feasible. This Taiyo Yuden component delivers identical capacitance, voltage, and tolerance values with X7R temperature stability. The 0402 package footprint requires PCB layout modification and assembly process compatibility with MLCC soldering procedures. Not recommended for new designs per manufacturer designation; suitable only for legacy system support where component sourcing constraints necessitate surface-mount alternatives. Significantly higher inventory availability (137,764 units) supports high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can the A473K15X7RF5TAA directly replace the UP050B473K-A-BZ without PCB modification?

A: Yes. The A473K15X7RF5TAA maintains identical axial through-hole mounting configuration and lead spacing compatibility. No PCB redesign is required for direct substitution in existing assemblies.

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

A: B temperature coefficient specifies capacitance change across -25°C to 85°C operating range. X7R temperature coefficient provides tighter capacitance stability across -55°C to 125°C. Both parts meet the original 0.047 µF ±10% tolerance specification across their respective operating ranges.

Q: Is the UMK105B7473KV-FR suitable for production redesigns?

A: The UMK105B7473KV-FR is classified as "Not For New Designs" by the manufacturer. This designation indicates the part is available for legacy support only. New product development should utilize the A473K15X7RF5TAA or equivalent active-status components.

Q: What are the physical dimension differences between substitute parts?

A: UP050B473K-A-BZ measures 0.087" diameter × 0.126" length (2.20mm × 3.20mm). A473K15X7RF5TAA measures 0.098" diameter × 0.150" length (2.50mm × 3.80mm). Both maintain axial through-hole compatibility. UMK105B7473KV-FR measures 0.039" length × 0.020" width × 0.026" thickness (1.00mm × 0.50mm × 0.65mm) for 0402 surface-mount package.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. UP050B473K-A-BZ, A473K15X7RF5TAA, and UMK105B7473KV-FR all maintain ROHS3 compliance. A473K15X7RF5TAA and UMK105B7473KV-FR additionally carry REACH unaffected status.

Q: What inventory levels support component selection?

A: UP050B473K-A-BZ maintains 684 units in stock (obsolete status). A473K15X7RF5TAA provides 30,396 units (active status). UMK105B7473KV-FR offers 137,764 units (not for new designs status). Inventory availability should factor into long-term supply chain planning.

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