Equivalent & Substitute Parts for 478LMB050M2EC

Part Overview

The 478LMB050M2EC is a 4700 µF, 50 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and extended operational life. The part is currently active in production with 865 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are met, enabling component interchangeability in circuit designs where the original part becomes unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

478LMB050M2EC

Cornell Dubilier / Illinois CapacitorIn Stock: 933478LMB050M2EC Datasheet

Current PartRFQ

381LX472M050A012

Cornell Dubilier Electronics (CDE)In Stock: 1124381LX472M050A012 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 478LMB050M2EC is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 4700 µF (exact match required)
• Voltage rating: 50 V (minimum requirement; higher ratings acceptable)
• Tolerance: ±20% (must match or be tighter)
• Lifetime: 3000 Hrs @ 105°C (minimum requirement)
• Operating temperature range: -40°C to 105°C (must encompass or exceed)
• Polarization: Polar (required)

Mechanical Parameters:

• Package type: Radial, Can - Snap-In (exact match required)
• Lead spacing: 10.00 mm (exact match required)
• Diameter: 35.00 mm (exact match required)
• Height (seated): 27.00 mm maximum (exact match required)
• Mounting type: Through Hole (exact match required)

Compliance Parameters:

• RoHS3 Compliant (required)
• Moisture Sensitivity Level: 1 (Unlimited) (required)
• REACH Status: REACH Unaffected (required)

The substitute part 381LX472M050A012 meets all critical electrical and mechanical parameters, enabling direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The 381LX472M050A012 is a direct functional equivalent to the 478LMB050M2EC based on the following engineering criteria:

Electrical Equivalence: Both parts share identical capacitance (4700 µF), voltage rating (50 V), tolerance (±20%), and thermal lifetime specification (3000 Hrs @ 105°C). The substitute part demonstrates superior ripple current handling at both low and high frequencies, providing enhanced performance margin in applications subject to AC ripple stress.

Mechanical Compatibility: Lead spacing, package diameter, and seated height are identical across both parts, ensuring direct PCB footprint compatibility without layout modification. Both parts utilize the same radial, can-style snap-in package with through-hole mounting configuration.

Compliance Alignment: Both parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, satisfying regulatory requirements for equivalent component substitution in production environments.

Product Status: Both parts are active in production with confirmed inventory availability, supporting uninterrupted supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 381LX472M050A012 be used as a direct replacement for the 478LMB050M2EC in existing circuit designs?

A: Yes. The substitute part meets all critical electrical and mechanical parameters. Capacitance, voltage rating, tolerance, operating temperature range, and physical dimensions are identical. PCB footprint compatibility is confirmed through matching lead spacing (10.00 mm), diameter (35.00 mm), and height (27.00 mm). No circuit redesign or PCB layout modification is required.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer series designation (LMB versus 381LX) and ripple current specifications. The substitute part (381LX472M050A012) provides higher ripple current capacity at both 120 Hz (2.5 A versus 1.86 A) and high frequency operation (2.9 A @ 20 kHz versus 2.325 A @ 10 kHz). ESR data is not provided for the substitute part. These differences do not affect functional equivalence in general-purpose applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the 478LMB050M2EC and 381LX472M050A012 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these capacitors?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes. Standard component storage conditions apply.

Q: Can these parts be used interchangeably in high-ripple-current applications?

A: The 381LX472M050A012 demonstrates higher ripple current specifications and may be preferred in applications with elevated AC ripple stress. However, both parts are rated for the same thermal lifetime (3000 Hrs @ 105°C) and operating temperature range (-40°C to 105°C), supporting equivalent performance in general-purpose applications within specified electrical limits.

Q: What is the lead spacing for these snap-in capacitors?

A: Both parts feature 10.00 mm lead spacing, ensuring compatibility with standard PCB hole patterns designed for radial, can-style snap-in aluminum electrolytic capacitors in this capacitance and voltage class.