Equivalent & Substitute Parts for Würth Elektronik 860010381029

Part Overview

The Würth Elektronik 860010381029 is a 10000 µF, 16 V aluminum electrolytic capacitor in radial configuration with a 2000-hour lifetime rating at 85°C. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific performance requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	10000 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Physical Diameter	0.709" (18.00 mm)
Height (Seated Max)	1.476" (37.50 mm)
Mounting Type	Through Hole
Polarization	Polar
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the Würth Elektronik 860010381029 is determined by the following critical parameters:

Capacitance Value: 10000 µF (exact match required)
Voltage Rating: Minimum 16 V (equal or higher acceptable)
Tolerance: ±20% (standard tolerance class)
Package Configuration: Radial, Can with identical lead spacing (0.295" / 7.50 mm) and physical dimensions (0.709" Dia / 18.00 mm, Height 1.476" / 37.50 mm)
Mounting Type: Through Hole
Polarization: Polar

Two substitute parts meet these criteria:

Direct Equivalent (860020381029): Würth Elektronik part with identical electrical and mechanical specifications, differing only in thermal performance characteristics (2000 Hrs @ 105°C vs. 2000 Hrs @ 85°C).
Upgrade Substitute (25PK10000MEFCGC18X35.5): Rubycon part with identical capacitance, tolerance, and package dimensions, featuring a higher voltage rating (25 V vs. 16 V).

Parameter Comparison

Parameter	860010381029 (Main)	860020381029 (Direct)	25PK10000MEFCGC18X35.5 (Upgrade)
Manufacturer	Würth Elektronik	Würth Elektronik	Rubycon
Capacitance	10000 µF	10000 µF	10000 µF
Voltage Rating	16 V	16 V	25 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Physical Diameter	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)
Height (Seated Max)	1.476" (37.50 mm)	1.476" (37.50 mm)	1.476" (37.50 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

860020381029 (Würth Elektronik Direct Equivalent): This part is suitable for applications requiring extended thermal performance. The higher operating temperature range (-40°C ~ 105°C) and thermal lifetime rating (2000 Hrs @ 105°C) provide enhanced reliability in elevated-temperature environments. Both parts maintain ROHS3 compliance and Active product status. Selection of this part is appropriate when thermal margin is a design consideration.

25PK10000MEFCGC18X35.5 (Rubycon Upgrade Substitute): This part provides voltage margin through its 25 V rating compared to the 16 V specification of the main part. The higher voltage rating allows operation in circuits with potential voltage transients or design margin requirements. This part maintains ROHS3 compliance and Active product status. Selection is appropriate when voltage headroom is beneficial to circuit reliability.

All three parts are Active products with ROHS3 compliance and identical mechanical footprints, ensuring direct board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can 860020381029 be used as a direct replacement for 860010381029?

A: Yes. Both parts share identical capacitance (10000 µF), voltage rating (16 V), tolerance (±20%), and mechanical dimensions. The primary difference is thermal performance: 860020381029 operates to 105°C versus 85°C for 860010381029. This makes 860020381029 suitable for higher-temperature applications while maintaining full compatibility in standard-temperature designs.

Q: What is the advantage of using 25PK10000MEFCGC18X35.5 over the Würth Elektronik parts?

A: The Rubycon 25PK10000MEFCGC18X35.5 provides a higher voltage rating (25 V vs. 16 V) while maintaining identical capacitance and physical dimensions. This voltage margin can be beneficial in applications subject to voltage transients or where design margin is required. The part is otherwise electrically and mechanically equivalent.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts have identical lead spacing (0.295" / 7.50 mm), physical diameter (0.709" / 18.00 mm), and seated height (1.476" / 37.50 mm). They are all radial, through-hole mounted capacitors in Can package configuration and will fit the same PCB footprint.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and classified as Active products. They share identical ECCN (EAR99) and HTSUS (8532.22.0020) classifications.

Q: Which part should be selected for a high-temperature application?

A: The Würth Elektronik 860020381029 is specified for operation to 105°C with a 2000-hour lifetime at that temperature, making it the appropriate choice for elevated-temperature environments compared to the 85°C rating of 860010381029.

Q: Can the 25 V rated Rubycon part be used in a 16 V circuit?

A: Yes. The 25PK10000MEFCGC18X35.5 is rated for 25 V operation and will function correctly in circuits with 16 V or lower applied voltage. The higher voltage rating provides additional safety margin and does not affect circuit operation at lower voltages.

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