KXG450VB47RM18X25LL Equivalent & Substitute Parts

Part Overview

The KXG450VB47RM18X25LL is a 47 µF, 450 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KXG series. This radial, through-hole component is rated for 10,000 hours at 105°C and is designed for general-purpose applications requiring stable capacitance and ripple current handling. The part is currently obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new designs requiring compatible specifications.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.709" (18.00 mm)
Height (Seated Max)	0.984" (25.00 mm)
Ripple Current @ 120 Hz	480 mA
Ripple Current @ 100 kHz	1.2 A

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict equivalence of electrical and mechanical parameters. The following criteria establish valid substitution:

Primary Equivalence Criteria:

Capacitance value: 47 µF (exact match required)
Voltage rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Operating temperature range: -25°C ~ 105°C (exact match required)
Lifetime rating: 10,000 Hrs @ 105°C (exact match required)

Mechanical Compatibility Criteria:

Mounting type: Through Hole (exact match required)
Package type: Radial, Can (exact match required)
Lead spacing: 0.295" (7.50 mm) (exact match required)
Case diameter: 0.709" (18.00 mm) (exact match required)

Secondary Considerations:

Ripple current ratings at specified frequencies
Height dimension (seated max)
Product status and availability
RoHS and REACH compliance status

Substitute parts are classified into two categories: Parametric Equivalent (identical electrical and mechanical specifications from the same manufacturer series) and Similar (equivalent electrical specifications with minor dimensional or performance variations from alternative manufacturers).

Parameter Comparison

Parameter	KXG450VB47RM18X25LL	EKXG451ELL470MM25S	EEU-ED2W470
Manufacturer	Chemi-Con	Chemi-Con	Panasonic Electronic Components
Series	KXG	KXG	ED-A
Capacitance	47 µF	47 µF	47 µF
Voltage Rating	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	10,000 Hrs	10,000 Hrs	10,000 Hrs
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Polarization	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)
Height (Seated Max)	0.984" (25.00 mm)	0.984" (25.00 mm)	1.240" (31.50 mm)
Ripple Current @ 120 Hz	480 mA	480 mA	400 mA
Ripple Current @ 100 kHz	1.2 A	1.2 A	1.0 A
Product Status	Obsolete	Active	Obsolete
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

EKXG451ELL470MM25S (Chemi-Con KXG Series)

This component is the primary parametric equivalent. It matches all electrical specifications (capacitance, voltage, tolerance, lifetime, temperature range) and all mechanical specifications (lead spacing, case diameter, height, mounting type, package type) of the original KXG450VB47RM18X25LL. The EKXG451ELL470MM25S is manufactured by Chemi-Con in the same KXG series and maintains identical ripple current ratings at both 120 Hz and 100 kHz. This part is currently in active production status with 9,530 units in stock, providing supply continuity. The component is ROHS3 compliant, offering improved environmental compliance compared to the obsolete original part.

EEU-ED2W470 (Panasonic ED-A Series)

This component provides electrical equivalence with all critical parameters matching the original specification: 47 µF capacitance, 450 V voltage rating, ±20% tolerance, 10,000 hour lifetime at 105°C, and identical operating temperature range. Mechanical compatibility is maintained for lead spacing (0.295" / 7.50 mm), case diameter (0.709" / 18.00 mm), and mounting type (through-hole radial). The EEU-ED2W470 differs in seated height (1.240" / 31.50 mm versus 0.984" / 25.00 mm) and exhibits lower ripple current ratings (400 mA @ 120 Hz and 1.0 A @ 100 kHz versus 480 mA and 1.2 A respectively). This part is obsolete but currently has 1,755 units in stock and is ROHS3 compliant. Selection of this component requires verification that the increased height dimension does not conflict with PCB layout constraints and that the reduced ripple current ratings are acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can EKXG451ELL470MM25S be used as a direct replacement for KXG450VB47RM18X25LL?

A: Yes. The EKXG451ELL470MM25S is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters—capacitance, voltage rating, tolerance, lifetime, operating temperature range, lead spacing, case diameter, and height—match exactly. The component can be substituted without circuit modification or PCB redesign.

Q: What are the key differences between EEU-ED2W470 and the original KXG450VB47RM18X25LL?

A: The EEU-ED2W470 matches all electrical specifications but differs in three areas: (1) seated height is 1.240" (31.50 mm) compared to 0.984" (25.00 mm), requiring verification of PCB clearance; (2) ripple current at 120 Hz is 400 mA versus 480 mA; (3) ripple current at 100 kHz is 1.0 A versus 1.2 A. These differences must be evaluated against application requirements.

Q: Why is the original KXG450VB47RM18X25LL marked as obsolete?

A: The part is no longer in active production. The EKXG451ELL470MM25S, also from Chemi-Con's KXG series, is the current production equivalent and is recommended for new designs and ongoing system support.

Q: Are there compliance differences between the substitute parts?

A: Yes. The original KXG450VB47RM18X25LL is RoHS non-compliant. Both substitute parts—EKXG451ELL470MM25S and EEU-ED2W470—are ROHS3 compliant, providing improved environmental compliance. All three parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: What is the impact of different ripple current ratings?

A: Ripple current rating determines the maximum AC current the capacitor can handle without exceeding temperature limits. The EEU-ED2W470 has lower ripple current ratings (400 mA @ 120 Hz and 1.0 A @ 100 kHz) compared to the original part (480 mA and 1.2 A). In applications with high ripple current, the reduced ratings may require thermal analysis to confirm the component operates within acceptable temperature limits.

Q: Can height dimension differences affect PCB assembly?

A: Yes. The EEU-ED2W470 has a seated height of 1.240" (31.50 mm) versus 0.984" (25.00 mm) for the original part. This 0.256" (6.50 mm) increase requires verification that the component does not interfere with adjacent components, shielding, or enclosure constraints. PCB layout review is necessary before substitution.

Q: What inventory status should influence component selection?

A: The EKXG451ELL470MM25S has 9,530 units in stock, providing robust supply availability. The EEU-ED2W470 has 1,755 units in stock. For applications requiring long-term supply security, the EKXG451ELL470MM25S is the preferred choice due to higher inventory levels and active production status.

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