Equivalent & Substitute Parts for 3186GF472M400MPC1

Part Overview

The Cornell Dubilier Electronics 3186GF472M400MPC1 is a 4700 µF, 400 V aluminum electrolytic capacitor with radial, can-mounted screw terminals. This component is classified as Active product status and is designed for general-purpose applications requiring high-capacitance energy storage in industrial and power electronics circuits. The 3186 series capacitor features a 34 mOhm equivalent series resistance and 1500-hour lifetime rating at 85°C operating temperature.

Equivalent and substitute parts are identified based on matching core electrical parameters: capacitance value (4700 µF), tolerance (±20%), voltage rating (400 V or higher), package type (radial can with screw terminals), and mechanical compatibility. Alternative sources and higher-performance variants are available from Nichicon, providing extended lifetime ratings and improved ripple current handling for demanding applications.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	4700	µF	Critical - must match exactly
Tolerance	±20%	%	Critical - defines acceptable range
Voltage Rating	400 V	V	Critical - minimum requirement; higher ratings acceptable
Package Type	Radial, Can - Screw Terminals	-	Critical - mechanical compatibility
Mounting Type	Chassis Mount	-	Critical - installation method
Lead Spacing	1.250" (31.75 mm)	inches / mm	Important - PCB layout compatibility
Size / Dimension	3.000" Dia (76.20 mm)	inches / mm	Important - physical fit in enclosure
Height - Seated (Max)	4.625" (117.48 mm)	inches / mm	Important - vertical clearance
Operating Temperature	-40°C ~ 85°C	°C	Important - thermal environment compatibility
Polarization	Polar	-	Critical - polarity-sensitive installation
RoHS Status	ROHS3 Compliant	-	Important - regulatory compliance

Substitute Part Grouping Explanation

Substitution logic for the 3186GF472M400MPC1 is based on the following mandatory parameters:

Electrical Equivalence Requirements:

Capacitance: 4700 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 400 V minimum (equal or higher ratings are acceptable)
Polarization: Polar (must match)

Mechanical Compatibility Requirements:

Package Type: Radial, Can - Screw Terminals (exact match required)
Mounting Type: Chassis Mount (exact match required)
Lead Spacing: 1.250" ± tolerance (within PCB layout constraints)
Diameter: 3.000" (within physical envelope)
Height: Must fit within available vertical space

Environmental & Compliance Requirements:

Operating Temperature: -40°C ~ 85°C (minimum requirement)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into two categories:

Category 1 - Same Manufacturer (Cornell Dubilier Electronics): The 3186GE472M400MPC1 maintains identical electrical and mechanical specifications with minor height variation (4.125" vs. 4.625"), providing direct interchangeability within the same product line.

Category 2 - Alternative Manufacturer (Nichicon): The LNY2G472MSEH and LNC2W472MSEH provide electrical equivalence with enhanced performance characteristics. The LNC2W472MSEH offers higher voltage rating (450 V) and extended lifetime (5000 Hrs @ 85°C). The LNY2G472MSEH matches the 400 V rating with improved lifetime (2000 Hrs @ 85°C) and reduced height (3.740").

Parameter Comparison

Parameter	3186GF472M400MPC1 (Main)	3186GE472M400MPC1	LNY2G472MSEH	LNC2W472MSEH
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Nichicon	Nichicon
Capacitance	4700 µF	4700 µF	4700 µF	4700 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage Rating	400 V	400 V	400 V	450 V
ESR	34 mOhm	Not specified	Not specified	Not specified
Lifetime @ 85°C	1500 Hrs	1500 Hrs	2000 Hrs	5000 Hrs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Lead Spacing	1.250" (31.75 mm)	1.250" (31.75 mm)	1.252" (31.80 mm)	1.252" (31.80 mm)
Diameter	3.000" (76.20 mm)	3.000" (76.20 mm)	3.000" (76.20 mm)	3.000" (76.20 mm)
Height - Seated (Max)	4.625" (117.48 mm)	4.125" (104.78 mm)	3.740" (95.00 mm)	4.646" (118.00 mm)
Polarization	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Selection - Same Manufacturer Variant: The 3186GE472M400MPC1 is the preferred direct substitute within the Cornell Dubilier Electronics 3186 series. This part maintains identical electrical specifications (4700 µF, ±20%, 400 V) and mechanical compatibility (lead spacing, diameter, screw terminals). The height reduction from 4.625" to 4.125" provides improved fit in space-constrained applications. Both parts are Active status with ROHS3 compliance and identical operating temperature range (-40°C ~ 85°C).

Secondary Selection - Enhanced Performance (Nichicon LNY2G472MSEH): The Nichicon LNY2G472MSEH provides electrical equivalence with extended lifetime (2000 Hrs @ 85°C vs. 1500 Hrs) and reduced height (3.740" vs. 4.625"). This part is suitable for applications requiring improved reliability margins or space optimization. Lead spacing tolerance (1.252" vs. 1.250") is within acceptable PCB layout variation. ROHS3 compliance and Active product status confirm regulatory and supply chain viability.

Tertiary Selection - Higher Voltage Rating (Nichicon LNC2W472MSEH): The Nichicon LNC2W472MSEH offers the highest performance specification with 450 V rating (50 V margin above 400 V requirement) and extended lifetime (5000 Hrs @ 85°C). This part is appropriate for applications with voltage transient exposure or extended service life requirements. Height specification (4.646") is marginally higher than the main part (4.625") and must be verified against available vertical clearance. ROHS3 compliance and Active product status are confirmed.

Compliance Verification: All substitute parts maintain ROHS3 compliance and Active product status. The main part and 3186GE472M400MPC1 are REACH Unaffected. Nichicon parts (LNY2G472MSEH, LNC2W472MSEH) are REACH Affected and require supply chain verification for applications subject to REACH regulations.

Frequently Asked Questions (FAQ)

Q1: Can the 3186GE472M400MPC1 be used as a direct replacement for the 3186GF472M400MPC1?

A: Yes. Both parts share identical electrical specifications (4700 µF, ±20%, 400 V) and mechanical package type (radial can with screw terminals). The 3186GE472M400MPC1 has a reduced height (4.125" vs. 4.625"), which improves fit in space-constrained designs. Lead spacing (1.250") and diameter (3.000") are identical. Verify vertical clearance in your specific application before substitution.

Q2: What is the key difference between the Cornell Dubilier and Nichicon substitute parts?

A: Cornell Dubilier 3186 series parts (3186GF472M400MPC1, 3186GE472M400MPC1) are optimized for general-purpose applications with 1500-hour lifetime ratings. Nichicon LNY and LNC series parts provide extended lifetime (2000-5000 hours) and improved ripple current handling. The LNC2W472MSEH offers higher voltage rating (450 V) for applications with transient voltage exposure.

Q3: Can I use the LNC2W472MSEH (450 V) in place of the 3186GF472M400MPC1 (400 V)?

A: Yes. Higher voltage-rated capacitors are electrically compatible with lower-voltage applications. The 450 V rating provides a 50 V safety margin above the 400 V requirement. Mechanical compatibility is confirmed: identical diameter (3.000"), compatible lead spacing (1.252" vs. 1.250"), and screw terminal package. Height is 4.646" (0.021" higher than main part); verify clearance in your enclosure.

Q4: Which substitute part has the smallest physical height?

A: The Nichicon LNY2G472MSEH has the smallest height at 3.740" (95.00 mm), compared to 4.625" for the main part. This 0.885" reduction is beneficial for applications with vertical space constraints. All other mechanical parameters (diameter, lead spacing, screw terminals) remain compatible.

Q5: Are there any REACH compliance differences between substitute parts?

A: Yes. The Cornell Dubilier 3186GF472M400MPC1 and 3186GE472M400MPC1 are REACH Unaffected. The Nichicon LNY2G472MSEH and LNC2W472MSEH are REACH Affected. Applications subject to REACH regulations must confirm supply chain documentation and material declarations for Nichicon parts before procurement.

Q6: What is the ripple current capability of each part?

A: The main part (3186GF472M400MPC1) does not specify ripple current ratings. The Nichicon LNY2G472MSEH provides 16.2 A @ 120 Hz and 22.68 A @ 10 kHz. The Nichicon LNC2W472MSEH provides 19.2 A @ 120 Hz and 26.88 A @ 10 kHz. Applications requiring high ripple current handling should select the LNC2W472MSEH for maximum current capacity.

Q7: Can these parts be used interchangeably in existing PCB designs?

A: Lead spacing compatibility must be verified. The main part and 3186GE472M400MPC1 have 1.250" (31.75 mm) spacing. Nichicon parts have 1.252" (31.80 mm) spacing—a 0.02 mm difference within typical PCB tolerance. Diameter (3.000") and screw terminal package are identical across all parts. Height variations (3.740" to 4.646") must be checked against available vertical clearance in your specific enclosure design.

Q8: Which substitute part offers the best long-term reliability?

A: The Nichicon LNC2W472MSEH provides the highest reliability specification with 5000-hour lifetime at 85°C (vs. 1500 hours for the main part). This extended rating is appropriate for critical applications requiring maximum service life. The LNY2G472MSEH offers intermediate reliability (2000 hours) with reduced height, suitable for space-optimized designs requiring improved reliability margins.

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