EET-HC2W181CF Equivalent & Substitute Parts

Part Overview

The Panasonic EET-HC2W181CF is a 180 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package format. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The TS-HC series has been discontinued, requiring engineers to identify functionally compatible alternatives from active manufacturers while maintaining electrical and mechanical compatibility with existing circuit designs.

Key Parameters

Parameter	Value
Capacitance	180 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Diameter	0.984" (25.00 mm)
Height (Seated Max)	1.457" (37.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-25°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: Must be 180 µF (±20% tolerance acceptable)
Voltage Rating: Must be 450 V or higher
Package Type: Must be Radial, Can - Snap-In
Lead Spacing: Must be 0.394" (10.00 mm)
Diameter: Must be 0.984" (25.00 mm)
Height (Seated Max): Must not exceed 1.457" (37.00 mm) for standard compatibility; variants up to 1.465" (37.20 mm) are mechanically acceptable with board layout verification
Mounting Type: Must be Through Hole
Polarization: Must be Polar

All substitute parts listed meet these core electrical and mechanical requirements. Differences in ESR, lifetime rating, ripple current capacity, and operating temperature range represent performance enhancements or variations that do not preclude substitution but should be evaluated against specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ Frequency	Lifetime @ 105°C	Operating Temp Range	Lead Spacing	Diameter	Height (Max)	Product Status
EET-HC2W181CF	Panasonic	180 µF	450 V	±20%	1.013 Ω @ 120 Hz	2000 Hrs	-25°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Obsolete
381LX181M450J032	Cornell Dubilier Electronics (CDE)	180 µF	450 V	±20%	1.11 Ω @ 120 Hz	3000 Hrs	-25°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M062	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M2	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M60	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M67	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M7	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active
B43508B5187M80	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.465" (37.20 mm)	Active
B43508B5187M82	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.465" (37.20 mm)	Active
B43508B5187M87	EPCOS - TDK Electronics	180 µF	450 V	±20%	680 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.465" (37.20 mm)	Active
B43642B5187M080	EPCOS - TDK Electronics	180 µF	450 V	±20%	460 mΩ @ 100 Hz	3000 Hrs	-40°C to 105°C	0.394" (10.00 mm)	0.984" (25.00 mm)	1.457" (37.00 mm)	Active

Engineering Selection Recommendations

All listed substitute parts are functionally compatible with the EET-HC2W181CF based on matching electrical specifications and mechanical form factor. The following factors should guide selection:

Product Status: All substitute parts carry Active product status, ensuring long-term availability and supply chain stability compared to the obsolete Panasonic TS-HC series.

Compliance & Certifications:

381LX181M450J032 (CDE): ROHS3 Compliant, REACH Unaffected
B43508 series (EPCOS - TDK Electronics): ROHS3 Compliant, REACH Unaffected
B43642B5187M080 (EPCOS - TDK Electronics): ROHS3 Compliant, REACH Unaffected

All substitute parts meet current regulatory requirements for electronics manufacturing.

Performance Characteristics:

The CDE 381LX181M450J032 offers extended lifetime (3000 Hrs @ 105°C vs. 2000 Hrs) with comparable ESR performance
EPCOS B43508 series variants provide lower ESR (680 mΩ @ 100 Hz) and extended operating temperature range (-40°C to 105°C), delivering improved thermal performance
EPCOS B43642B5187M080 offers the lowest ESR (460 mΩ @ 100 Hz) and highest ripple current capacity (1.04 A @ 100 Hz), suitable for high-stress applications

Mechanical Compatibility: B43508B5187M80, B43508B5187M82, and B43508B5187M87 have a maximum seated height of 1.465" (37.20 mm), which is 0.008" taller than the original specification. Board layout verification is required for these variants to ensure clearance in confined spaces.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the EET-HC2W181CF?

A: Yes. All listed parts meet the core electrical and mechanical requirements: 180 µF capacitance, 450 V voltage rating, ±20% tolerance, radial snap-in package, 10.00 mm lead spacing, 25.00 mm diameter, and through-hole mounting. Physical board layout should be verified, particularly for variants with 1.465" (37.20 mm) height.

Q: What is the difference between the EPCOS B43508 and B43642 series?

A: Both are 180 µF, 450 V aluminum electrolytic capacitors in identical packages. The B43642 series features lower ESR (460 mΩ vs. 680 mΩ) and higher ripple current capacity (1.04 A vs. 970 mA), making it suitable for applications requiring superior high-frequency performance and thermal management.

Q: Does the extended lifetime rating of substitute parts affect circuit performance?

A: Lifetime rating indicates the expected operational duration under specified conditions (105°C, rated ripple current). Extended lifetime (3000 Hrs vs. 2000 Hrs) provides longer service life but does not alter electrical performance in the circuit. Selection should be based on application duty cycle and expected product lifespan.

Q: Are there height clearance concerns with any substitute parts?

A: B43508B5187M80, B43508B5187M82, and B43508B5187M87 have a maximum seated height of 1.465" (37.20 mm), compared to 1.457" (37.00 mm) for the original and other substitutes. This 0.008" difference is negligible in most applications but should be verified if the capacitor is mounted in a confined space with tight vertical clearance.

Q: Which substitute part offers the best performance for high-ripple-current applications?

A: The EPCOS B43642B5187M080 provides the lowest ESR (460 mΩ @ 100 Hz) and highest ripple current capacity (1.04 A @ 100 Hz), making it the optimal choice for circuits with significant AC ripple or high-frequency switching demands.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All substitute parts listed are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronics manufacturing and distribution.

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