Equivalent & Substitute Parts for Würth Elektronik 860010372003

Part Overview

The Würth Elektronik 860010372003 is a 33 µF, 16 V aluminum electrolytic capacitor in radial configuration with a 2000-hour lifetime rating at 85°C. This component is classified as Active and fully compliant with RoHS3 and REACH regulations. Substitute parts are identified to address application requirements for higher voltage ratings, extended temperature operating ranges, or improved lifetime characteristics while maintaining the same capacitance value and physical form factor.

Key Parameters

Parameter	Value
Manufacturer Part Number	860010372003
Manufacturer	Würth Elektronik
Capacitance	33 µF
Tolerance	±20%
Voltage - Rated	16 V
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.079" (2.00 mm)
Size / Dimension	0.197" Dia (5.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
Series	WCAP-ATG8
Product Status	Active
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the 860010372003 are grouped based on the following allowed electrical and mechanical parameters:

Capacitance: All substitutes maintain 33 µF ±20% tolerance.

Voltage Rating: Substitutes are available at 16 V, 25 V, 35 V, and 50 V. Higher voltage ratings provide design margin for circuits with voltage transients or future specification changes.

Operating Temperature Range: Substitutes extend from the base -40°C ~ 85°C to -40°C ~ 105°C or -55°C ~ 105°C, enabling use in higher ambient temperature environments.

Lifetime Rating: Substitutes offer 2000 Hrs @ 85°C, 2000 Hrs @ 105°C, 4000 Hrs @ 105°C, or 5000 Hrs @ 105°C, addressing applications requiring extended operational life.

Physical Form Factor: All substitutes maintain identical lead spacing (0.079" / 2.00 mm), case diameter (0.197" / 5.00 mm), and maximum seated height (0.492" / 12.50 mm), ensuring direct mechanical compatibility.

Mounting Type & Package: All substitutes are Through Hole, Radial, Can configuration.

Compliance: All substitutes are RoHS3 Compliant and REACH Unaffected.

Parameter Comparison

Part Number	Series	Voltage (V)	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz (mA)	Ripple Current @ 100 kHz (mA)	Impedance
860010372003	WCAP-ATG8	16	2000 Hrs @ 85°C	-40°C ~ 85°C	84	128.52	-
860020372003	WCAP-ATG5	16	2000 Hrs @ 105°C	-40°C ~ 105°C	64	97.92	-
860010472004	WCAP-ATG8	25	2000 Hrs @ 85°C	-40°C ~ 85°C	105	160.65	-
860010572004	WCAP-ATG8	35	2000 Hrs @ 85°C	-40°C ~ 85°C	121	185.13	-
860010672011	WCAP-ATG8	50	2000 Hrs @ 85°C	-40°C ~ 85°C	132	201.96	-
860020472005	WCAP-ATG5	25	2000 Hrs @ 105°C	-40°C ~ 105°C	69	105.57	-
860020572005	WCAP-ATG5	35	2000 Hrs @ 105°C	-40°C ~ 105°C	75	114.75	-
860020672012	WCAP-ATG5	50	2000 Hrs @ 105°C	-40°C ~ 105°C	75	114.75	-
860040572001	WCAP-ATUL	35	5000 Hrs @ 105°C	-40°C ~ 105°C	154.1	230	550 mOhms
860080572001	WCAP-ATLI	35	2000 Hrs @ 105°C	-55°C ~ 105°C	-	230	320 mOhms
860160372005	WCAP-ATLL	16	4000 Hrs @ 105°C	-55°C ~ 105°C	74.88	144	2 Ohms

Engineering Selection Recommendations

Selection of substitute parts is determined by circuit voltage requirements, ambient temperature environment, and application lifetime expectations.

For 16 V applications: The 860020372003 (WCAP-ATG5 series) extends the upper operating temperature to 105°C while maintaining the same voltage rating and physical dimensions. The 860160372005 (WCAP-ATLL series) provides extended lifetime (4000 Hrs @ 105°C) and wider temperature range (-55°C ~ 105°C) for demanding environments.

For higher voltage margin: The 860010472004 (25 V), 860010572004 (35 V), and 860010672011 (50 V) provide voltage upgrades within the WCAP-ATG8 series, maintaining the 85°C temperature rating. The 860020472005, 860020572005, and 860020672012 offer equivalent voltage ratings with extended 105°C temperature capability in the WCAP-ATG5 series.

For extended lifetime: The 860040572001 (WCAP-ATUL series) delivers 5000 Hrs @ 105°C at 35 V, suitable for applications requiring maximum operational life. The 860080572001 (WCAP-ATLI series) combines 35 V rating with extended temperature range (-55°C ~ 105°C) and improved ripple current handling.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a direct substitute?

A: Yes. A capacitor with a higher voltage rating (e.g., 25 V, 35 V, or 50 V) is electrically compatible with a 16 V circuit. The capacitor will operate safely at lower voltages. Physical dimensions remain identical across all listed substitutes, ensuring mechanical compatibility.

Q: What is the difference between WCAP-ATG8, WCAP-ATG5, WCAP-ATUL, WCAP-ATLI, and WCAP-ATLL series?

A: These series designations indicate different thermal and lifetime characteristics. WCAP-ATG8 is rated for 2000 Hrs @ 85°C. WCAP-ATG5 extends to 2000 Hrs @ 105°C. WCAP-ATUL provides 5000 Hrs @ 105°C. WCAP-ATLI and WCAP-ATLL offer extended temperature ranges (-55°C minimum) with varying lifetime ratings. Selection depends on application temperature environment and required operational life.

Q: Are all substitutes mechanically interchangeable?

A: Yes. All listed substitutes maintain identical lead spacing (0.079" / 2.00 mm), case diameter (0.197" / 5.00 mm), and maximum seated height (0.492" / 12.50 mm). All are Through Hole, Radial, Can configuration. Direct PCB mounting without modification is possible.

Q: What does the ±20% tolerance specification mean?

A: The capacitance value may vary ±20% from the nominal 33 µF rating. All listed substitutes maintain this same tolerance specification, ensuring equivalent performance in circuits designed for this tolerance band.

Q: Can I use a capacitor rated for 105°C in a circuit designed for 85°C operation?

A: Yes. A capacitor rated for higher temperature operation is suitable for lower temperature applications. The 105°C rating indicates the component can safely operate at temperatures up to 105°C; operation at 85°C or below presents no compatibility issues.

Q: What is the significance of ripple current ratings?

A: Ripple current ratings indicate the maximum AC current the capacitor can handle at specified frequencies (120 Hz for low frequency, 100 kHz for high frequency) without exceeding temperature limits. Higher ripple current capability provides design margin in circuits with significant AC current content. Substitutes with higher ripple current ratings offer improved performance in such applications.

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