477LBA400M2EG

Part Overview

The 477LBA400M2EG is a 470 µF, 400 V aluminum electrolytic capacitor in a radial, snap-in can format manufactured by Cornell Dubilier / Illinois Capacitor. This component is rated for 2000 hours at 85°C and is actively supplied. Alternative models may be required to meet specific application requirements such as extended operational lifetime, enhanced thermal performance, or alternative packaging logistics.

Key Parameters

Parameter	Value
Capacitance	470 µF
Voltage - Rated	400 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C
ESR @ 120Hz	529.11 mOhm
Ripple Current @ 120 Hz	2.23 A
Lead Spacing	0.394" (10.00 mm)
Diameter	1.378" (35.00 mm)
Height - Seated (Max)	1.831" (46.50 mm)
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Direct substitutes are classified based on electrical and mechanical parameters that ensure functional equivalence. The primary criteria for direct substitution are: capacitance (470 µF), voltage rating (400 V), tolerance (±20%), package type (radial, can snap-in), lead spacing (10.00 mm), and case diameter (35.00 mm).

Height variations within the physical envelope are acceptable provided the mounted configuration remains compatible with existing circuit board layouts. Lifetime ratings may vary; direct substitutes include parts rated for 2000 or 3000 hours at 85°C. ESR values are compared where specified to assess performance characteristics under ripple current conditions.

Upgrade parts are identified where voltage rating, temperature range, or lifetime specifications exceed the original part while maintaining identical capacitance, tolerance, case diameter, and lead spacing.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp. Range	Height (mm)	ESR	Ripple Current @ 120 Hz	Product Status
477LBA400M2EG	Cornell Dubilier / Illinois Capacitor	470 µF	400 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	46.50	529.11 mOhm @ 120Hz	2.23 A	Active
400USG470MEFCSN35X30	Rubycon	470 µF	400 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	32.00	—	2.39 A	Active
861011386030	Würth Elektronik	470 µF	400 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	37.00	—	2.42 A	Active
861221386021	Würth Elektronik	470 µF	400 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	37.00	—	2.51 A	Active
B43231A9477M000	EPCOS - TDK Electronics	470 µF	400 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	42.00	—	2.4 A	Active
ELH477M400AT4AA	KEMET	470 µF	400 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	42.00	130 mOhm @ 20kHz	2.4 A	Active
ESMQ401VSN471MA30S	Chemi-Con	470 µF	400 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	32.00	—	2.39 A	Active
LLS2G471MELC	Nichicon	470 µF	400 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	35.00	—	2.51 A	Active
SLPX471M400H7P3	Cornell Dubiliel Electronics (CDE)	470 µF	400 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	40.00	423 mOhm @ 120Hz	2.54 A	Active
450VXG470MEFCSN35X45	Rubycon	470 µF	450 V	±20%	5000 Hrs @ 105°C	-25°C ~ 105°C	47.00	—	2.05 A	Active
B43501A9477M002	EPCOS - TDK Electronics	470 µF	400 V	±20%	10000 Hrs @ 85°C	-40°C ~ 85°C	47.00	140 mOhm @ 100Hz	2.6 A	Active

Engineering Selection Recommendations

All listed substitute parts and upgrade parts are actively supplied with confirmed production status. All parts comply with RoHS3 standards and maintain REACH Unaffected status, ensuring regulatory alignment for industrial and consumer electronics applications.

Direct substitutes 400USG470MEFCSN35X30, 861011386030, 861221386021, B43231A9477M000, ELH477M400AT4AA, ESMQ401VSN471MA30S, LLS2G471MELC, and SLPX471M400H7P3 provide functional equivalence with the original part. Selection among these direct substitutes depends on availability, height constraints within the application's physical envelope, and preferred lead times from specific manufacturers.

Upgrade part B43501A9477M002 offers extended lifetime (10000 hours at 85°C), lower operating temperature floor (-40°C), and lower ESR (140 mOhm @ 100Hz), suitable for demanding applications requiring enhanced reliability. The upgrade part 450VXG470MEFCSN35X45 provides higher voltage rating (450 V) and elevated maximum operating temperature (105°C), with extended lifetime (5000 hours at 105°C), applicable to high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can I use 861011386030 or 861221386021 in place of 477LBA400M2EG? A: Yes. Both Würth Elektronik parts are direct substitutes, maintaining the same capacitance (470 µF), voltage rating (400 V), tolerance (±20%), lead spacing (10 mm), and case diameter (35 mm). Height differences (37 mm vs. 46.50 mm) require confirmation of available clearance in the circuit board layout.

Q: What is the difference between 400USG470MEFCSN35X30 and ESMQ401VSN471MA30S? A: Both parts have identical electrical ratings (470 µF, 400 V, ±20%) and mounting dimensions, with comparable ripple current performance at 120 Hz. Both are rated 2000 hours at 85°C for 400USG470MEFCSN35X30 and ESMQ401VSN471MA30S respectively. The primary difference is manufacturer: Rubycon versus Chemi-Con. Selection should be based on supply availability and preferred supplier relationships.

Q: When should I consider the B43501A9477M002 upgrade? A: The B43501A9477M002 is recommended when the application requires extended operational lifetime (10000 hours at 85°C versus 2000 hours), operation in colder environments (minimum -40°C), or when lower ESR (140 mOhm @ 100Hz) is necessary to reduce ripple voltage on sensitive circuits. Physical height (47 mm) requires clearance verification.

Q: Is LLS2G471MELC compatible with my existing design if it specifies 477LBA400M2EG? A: Yes, provided the circuit board has adequate clearance. The LLS2G471MELC maintains electrical equivalence and has a maximum height of 35 mm, which is lower than the original 46.50 mm, ensuring fit in space-constrained layouts. The 3000-hour lifetime rating extends service life under 85°C operation.

Q: What is the advantage of 450VXG470MEFCSN35X45 over other substitutes? A: The 450VXG470MEFCSN35X45 increases voltage headroom from 400 V to 450 V and supports sustained operation at 105°C with 5000-hour lifetime, making it suitable for high-temperature industrial environments. This upgrade is appropriate when thermal margins are limited or when the circuit experiences voltage transients near the rated limit.

Q: Do all substitute parts meet the same compliance standards as 477LBA400M2EG? A: All listed parts are ROHS3 compliant and REACH Unaffected, ensuring equivalent regulatory compliance for use in regulated electronics markets.

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