860040373003 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 860040373003 is a 120 µF, 16 V aluminum electrolytic capacitor in radial configuration with a 5000-hour lifetime rating at 105°C. This component is classified as Active and is suitable for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. Equivalent parts are identified based on matching electrical specifications, mechanical dimensions, and performance characteristics to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Specification
Capacitance	120 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.098" (2.50 mm)
Case Diameter	0.248" (6.30 mm)
Height (Seated Max)	0.492" (12.50 mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the 860040373003 is based on strict equivalence across the following critical parameters:

Electrical Match: Capacitance value (120 µF), voltage rating (16 V), and tolerance (±20%) must be identical
Thermal Performance: Lifetime rating of 5000 hours at 105°C ensures equivalent reliability in temperature-stressed applications
Mechanical Compatibility: Lead spacing (2.50 mm), case diameter (6.30 mm), and height (12.50 mm) must match for direct PCB mounting without layout modification
Polarization: Polar configuration required for correct circuit polarity
Package Configuration: Radial, can-style through-hole mounting ensures footprint compatibility

The Nichicon UHE1C121MED1TD meets all substitution criteria and is identified as a direct equivalent part.

Parameter Comparison

Parameter	860040373003 (Würth Elektronik)	UHE1C121MED1TD (Nichicon)
Capacitance	120 µF	120 µF
Voltage Rating	16 V	16 V
Tolerance	±20%	±20%
Lifetime @ 105°C	5000 Hrs	5000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar
Lead Spacing	0.098" (2.50 mm)	0.098" (2.50 mm)
Case Diameter	0.248" (6.30 mm)	0.248" (6.30 mm)
Height (Seated Max)	0.492" (12.50 mm)	0.492" (12.50 mm)
Mounting Type	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both the Würth Elektronik 860040373003 and Nichicon UHE1C121MED1TD are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and commercial applications. The primary distinction is product status: the Würth part is Active with 2502 units in stock, while the Nichicon part is Obsolete with 804 units available. For new designs and long-term supply chain stability, the Würth Elektronik 860040373003 is the preferred primary selection. The Nichicon UHE1C121MED1TD serves as a direct functional equivalent for applications requiring immediate substitution or where existing inventory constraints necessitate alternative sourcing.

Frequently Asked Questions (FAQ)

Q: Can the Nichicon UHE1C121MED1TD be used as a direct replacement for the Würth Elektronik 860040373003?

A: Yes. Both parts share identical electrical specifications (120 µF, 16 V, ±20% tolerance), thermal performance (5000 Hrs @ 105°C), and mechanical dimensions (lead spacing, case diameter, height). Direct PCB substitution is possible without circuit modification.

Q: Are there differences in ripple current handling between these parts?

A: Minor variations exist in ripple current performance. The Würth part specifies 232.5 mA @ 120 Hz and 310 mA @ 100 kHz, while the Nichicon part specifies 238 mA @ 120 Hz and 340 mA @ 100 kHz. Both values remain within acceptable operating ranges for general-purpose applications with identical voltage and capacitance ratings.

Q: What is the impedance difference between these parts?

A: The Würth part has 215 mOhms impedance, while the Nichicon part has 220 mOhms impedance. This 5 mOhm difference is negligible for most circuit applications and does not affect substitution compatibility.

Q: Why is the Nichicon part listed as Obsolete?

A: Product status reflects manufacturer lifecycle decisions. Obsolete designation indicates the part is no longer in active production, though existing inventory remains available. For new designs, the Active Würth Elektronik part is recommended for supply chain continuity.

Q: Are both parts suitable for the same PCB footprint?

A: Yes. Identical lead spacing (2.50 mm), case diameter (6.30 mm), and seated height (12.50 mm) ensure both parts fit the same through-hole PCB layout without modification.

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