Würth Elektronik 860040372001 Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 860040372001 is a 56 µF, 16 V aluminum electrolytic capacitor in radial configuration with a 5000-hour lifetime rating at 105°C. This component is classified as Active product status and is designed for general-purpose applications requiring reliable energy storage and filtering in electronic circuits. Substitute parts become necessary when higher voltage ratings are required for circuit protection, when inventory constraints limit availability of the primary part number, or when system design specifications call for enhanced voltage margin in the application.

Substiute Parts

860040372001

Würth ElektronikIn Stock: 3139860040372001 Datasheet

Current PartRFQ

860040472002

Würth ElektronikIn Stock: 9115860040472002 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 860040472002 is classified as an upgrade substitute based on the following substitution criteria:

Allowed Substitution Parameters:

• Capacitance value remains constant at 56 µF
• Tolerance specification remains ±20%
• Operating temperature range remains -40°C ~ 105°C
• Lifetime rating remains 5000 Hrs @ 105°C
• Polarization remains Polar
• Package configuration remains Radial, Can
• Mounting type remains Through Hole
• Lead spacing remains 0.079" (2.00mm)
• Physical dimensions remain identical: 0.197" Dia (5.00mm), Height 0.492" (12.50mm)
• Series remains WCAP-ATUL
• RoHS3 compliance maintained

Substitution Difference:

• Voltage rating increases from 16 V to 25 V

This substitution is valid because the higher voltage rating (25 V) is backward-compatible with circuits designed for 16 V operation. The substitute part provides enhanced voltage margin and improved circuit protection without altering any other electrical or mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the main part 860040372001 and substitute part 860040472002 maintain Active product status from Würth Elektronik, ensuring continued availability and manufacturing support. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

The substitute part 860040472002 is suitable for direct replacement in applications where the circuit design permits operation at the higher 25 V rating. The increased voltage rating provides additional safety margin and does not introduce any mechanical or thermal incompatibilities. The identical physical footprint, lead spacing, and mounting configuration ensure seamless integration into existing printed circuit board layouts.

Selection between the main part and substitute should be based on circuit voltage requirements and design specifications. The 25 V rated substitute is appropriate for circuits operating at or below 16 V, providing enhanced voltage headroom. The main part remains the correct choice for applications with strict voltage rating matching requirements or where the 16 V specification is a design constraint.

Frequently Asked Questions (FAQ)

Q: Can the 25 V rated substitute part 860040472002 be used in place of the 16 V rated main part 860040372001?

A: Yes. The substitute part is backward-compatible with circuits designed for the 16 V rated component. The higher voltage rating provides additional circuit protection and voltage margin without affecting electrical performance at lower operating voltages.

Q: Are the physical dimensions and mounting footprints identical between these two parts?

A: Yes. Both parts share identical lead spacing (0.079" / 2.00mm), case diameter (0.197" / 5.00mm), and seated height (0.492" / 12.50mm). No printed circuit board layout modifications are required for substitution.

Q: Do both parts have the same capacitance value and tolerance?

A: Yes. Both parts are rated at 56 µF with ±20% tolerance. Capacitance specifications are identical between the main part and substitute.

Q: What is the difference in ripple current handling between these parts?

A: The 25 V substitute part 860040472002 has higher ripple current ratings: 160.8 mA @ 120 Hz and 240 mA @ 100 kHz, compared to 134 mA @ 120 Hz and 200 mA @ 100 kHz for the 16 V main part. Both maintain identical impedance at 560 mOhms.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the main part 860040372001 and substitute part 860040472002 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement and use.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 105°C with a rated lifetime of 5000 hours at 105°C.