LP392M050C7P3 Equivalent & Substitute Parts

Part Overview

The LP392M050C7P3 is a 3900 µF, 50 V aluminum electrolytic capacitor with radial, snap-in mounting from Cornell Dubilier Electronics. This capacitor is rated for general-purpose applications with an operating temperature range of -40°C to 105°C and RoHS3 compliance. The component is currently in active production status. Alternative part numbers become necessary when addressing inventory availability, performance optimization for specific applications, or when seeking improved reliability characteristics such as extended operational lifetime or reduced equivalent series resistance.

Key Parameters

Parameter	Specification
Capacitance	3900 µF
Voltage Rating	50 V
Tolerance	±20%
Case/Package	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Body Diameter	0.984" (25.00 mm)
Operating Temperature	-40°C to 105°C
Polarization	Polar
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LP392M050C7P3 is determined by strict compliance with the following electrical and mechanical parameters:

Capacitance value: 3900 µF (no deviation)
Voltage rating: 50 V (no deviation)
Tolerance: ±20% (no deviation)
Package type: Radial, Can - Snap-In
Mounting type: Through Hole
Lead spacing: 0.394" (10.00 mm)
Body diameter: 0.984" (25.00 mm)
Operating temperature range: -40°C to 105°C (minimum requirement)

All four substitute parts meet these core requirements. Secondary electrical characteristics such as ESR, ripple current ratings, and operational lifetime may vary within acceptable ranges. Physical height differences exist among substitutes but remain compatible with standard through-hole mounting applications where board clearance accommodates variations between 1.063" (27.00 mm) and 1.575" (40.00 mm).

Parameter Comparison

Parameter	LP392M050C7P3	381LQ392M050J012	SLP392M050C3P3	50MXG3900MEFCSN25X25	LGU1H392MELA
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Rubycon	Nichicon
Capacitance	3900 µF	3900 µF	3900 µF	3900 µF	3900 µF
Voltage Rating	50 V	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 120 Hz	85 mOhm	106 mOhm	119 mOhm	Not specified	Not specified
Lifetime @ 105°C	1000 Hrs	2000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Ripple Current @ 120 Hz	1.97 A	2.2 A	2.2 A	2.22 A	2.28 A
Body Diameter	0.984" (25.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)
Height (Seated Max)	1.575" (40.00 mm)	1.063" (27.00 mm)	1.181" (30.00 mm)	1.063" (27.00 mm)	1.260" (32.00 mm)
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts maintain active production status and RoHS3 compliance, ensuring continued availability and regulatory conformance. Cornell Dubilier Electronics variants (381LQ392M050J012 and SLP392M050C3P3) provide extended operational lifetime of 2000 and 3000 hours at 105°C respectively, compared to the original 1000-hour specification. The SLP392M050C3P3 offers the longest thermal life rating while maintaining reduced height (1.181" vs. 1.575"), improving design flexibility for compact enclosures. The Rubycon 50MXG3900MEFCSN25X25 and Nichicon LGU1H392MELA provide 3000-hour thermal lifetime with comparable ripple current performance across manufacturer variants. Height compatibility must be evaluated against specific board layout and enclosure clearance requirements, as substitutes range from 1.063" to 1.575" in seated height. For applications requiring lowest ESR characteristics, the original LP392M050C7P3 at 85 mOhm provides superior performance; however, higher ESR values in substitutes remain within acceptable limits for general-purpose filtering and energy storage applications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace an LP392M050C7P3 with any of the listed substitute parts?

A: All four substitute parts meet the core electrical specifications (3900 µF, 50 V, ±20% tolerance) and mechanical requirements (radial snap-in, 10 mm lead spacing, 25 mm diameter). Physical height variations exist; verify that your circuit board and enclosure accommodate heights between 1.063" and 1.575". Through-hole mounting compatibility is identical across all parts.

Q: What is the difference between the LP392M050C7P3 and the SLP392M050C3P3?

A: Both are Cornell Dubilier Electronics 3900 µF, 50 V aluminum electrolytic capacitors with identical electrical ratings and mechanical form factors. The SLP392M050C3P3 offers triple the thermal lifetime (3000 hours vs. 1000 hours at 105°C) with slightly higher ESR (119 mOhm vs. 85 mOhm) and reduced seated height (1.181" vs. 1.575"). Selection depends on application thermal requirements and available board clearance.

Q: Are cross-manufacturer substitutes (Rubycon, Nichicon) electrically equivalent?

A: Yes. The Rubycon 50MXG3900MEFCSN25X25 and Nichicon LGU1H392MELA meet all electrical parameter specifications for the LP392M050C7P3. Both provide 3000-hour thermal lifetime and comparable ripple current performance. Manufacturing differences do not affect functional compatibility in general-purpose applications.

Q: How do I select between substitutes when multiple options are available?

A: Selection criteria are inventory availability, operational lifetime requirements, ESR performance needs, and physical height constraints. The original LP392M050C7P3 provides lowest ESR (85 mOhm). For extended thermal life without premium pricing, the SLP392M050C3P3 (Cornell Dubilier) or cross-manufacturer alternatives offer 3000-hour ratings. Verify board height clearance before final selection.

Q: Are RoHS and REACH compliance identical across all parts?

A: Yes. All parts including the original LP392M050C7P3 are RoHS3 compliant and REACH unaffected, ensuring regulatory acceptance in equivalent design positions.

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