KXG450VB33RM16X25LL Equivalent & Substitute Parts

Part Overview

The KXG450VB33RM16X25LL is a 33 µF, 450 V aluminum electrolytic capacitor in radial, can package manufactured by Chemi-Con. This component is rated for 10,000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently obsolete, necessitating identification of equivalent and substitute components that maintain the same electrical and mechanical specifications for continued system support and new designs.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Height (Seated Max)	0.984" (25.00 mm)

Substitute Part Grouping Explanation

Substitute parts for the KXG450VB33RM16X25LL are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

Capacitance: 33 µF
Voltage Rating: 450 V
Tolerance: ±20%
Lifetime: 10,000 Hrs @ 105°C
Operating Temperature Range: -25°C to 105°C
Polarization: Polar

Mechanical Parameters (Must Match):

Mounting Type: Through Hole
Package Type: Radial, Can
Lead Spacing: 0.295" (7.50 mm)
Case Diameter: 0.630" (16.00 mm)

Acceptable Variations:

Height may vary within physical board layout constraints
Ripple current ratings may differ while maintaining application suitability
RoHS compliance status may differ
Product status may transition from obsolete to active

Parameter Comparison

Parameter	KXG450VB33RM16X25LL	EKXG451ELL330ML25S	EEU-ED2W330
Manufacturer	Chemi-Con	Chemi-Con	Panasonic Electronic Components
Capacitance	33 µF	33 µF	33 µF
Voltage Rating	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	10,000 Hrs @ 105°C	10,000 Hrs @ 105°C	10,000 Hrs @ 105°C
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-25°C to 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	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height (Seated Max)	0.984" (25.00 mm)	0.984" (25.00 mm)	1.240" (31.50 mm)
Ripple Current @ 120 Hz	390 mA	390 mA	340 mA
Ripple Current @ 100 kHz	975 mA	975 mA	850 mA
Product Status	Obsolete	Active	Active
RoHS Status	RoHS Non-Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

EKXG451ELL330ML25S (Chemi-Con)

This part is a parametric equivalent to the KXG450VB33RM16X25LL. All electrical and mechanical specifications match exactly, including capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, lead spacing, case diameter, and seated height. The EKXG451ELL330ML25S is currently in active product status and is RoHS3 compliant, providing improved regulatory compliance compared to the obsolete original part. This substitute is the primary selection for direct replacement in existing designs and new applications.

EEU-ED2W330 (Panasonic Electronic Components)

This part meets all critical electrical parameters: 33 µF capacitance, 450 V voltage rating, ±20% tolerance, 10,000 hour lifetime at 105°C, and identical operating temperature range. The through-hole radial can package with 0.295" lead spacing and 0.630" case diameter ensures mechanical compatibility. The seated height is 1.240" (31.50 mm), which exceeds the original 0.984" specification. This height difference requires verification of available board space in the target application. Ripple current ratings are lower than the original part. The EEU-ED2W330 is active and RoHS3 compliant. Selection of this part is contingent upon confirmation that the increased height does not conflict with physical layout constraints.

Frequently Asked Questions (FAQ)

Q: Can EKXG451ELL330ML25S be used as a direct replacement for KXG450VB33RM16X25LL?

A: Yes. The EKXG451ELL330ML25S is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters including capacitance, voltage rating, tolerance, lifetime, operating temperature, lead spacing, case diameter, and seated height match the original part. No design modifications are required.

Q: What is the key difference between EKXG451ELL330ML25S and EEU-ED2W330?

A: Both parts match the electrical specifications of the original component. The primary difference is physical height: EKXG451ELL330ML25S maintains the original 0.984" seated height, while EEU-ED2W330 has a seated height of 1.240". Additionally, ripple current ratings differ, with EKXG451ELL330ML25S matching the original values and EEU-ED2W330 providing lower ripple current capacity. Lead spacing and case diameter are identical for both substitutes.

Q: Are there any compliance differences between the original part and the substitutes?

A: Yes. The original KXG450VB33RM16X25LL is RoHS non-compliant. Both substitute parts, EKXG451ELL330ML25S and EEU-ED2W330, are RoHS3 compliant. This represents an improvement in regulatory compliance for new designs and systems requiring RoHS certification.

Q: Can EEU-ED2W330 be used if board space is limited?

A: The EEU-ED2W330 has a seated height of 1.240" compared to the original 0.984". If the available vertical clearance on the PCB is less than 1.240", this part cannot be used. Verify the physical layout constraints before selecting this substitute.

Q: Do the ripple current ratings affect component selection?

A: Ripple current ratings indicate the maximum AC current the capacitor can handle at specified frequencies. EKXG451ELL330ML25S matches the original ripple current specifications (390 mA @ 120 Hz, 975 mA @ 100 kHz). EEU-ED2W330 has lower ripple current ratings (340 mA @ 120 Hz, 850 mA @ 100 kHz). Selection depends on the actual ripple current requirements of the application circuit.

Q: Are all three parts through-hole mounted?

A: Yes. The original KXG450VB33RM16X25LL and both substitutes (EKXG451ELL330ML25S and EEU-ED2W330) are through-hole mounted radial can capacitors with identical lead spacing of 0.295" (7.50 mm). No PCB layout modifications are required for lead placement.

Q: What is the lead spacing specification and why is it important?

A: Lead spacing is 0.295" (7.50 mm) for all three parts. This specification defines the distance between the two leads on the PCB and is critical for ensuring proper fit in existing through-hole footprints. Identical lead spacing across all parts ensures mechanical compatibility without PCB redesign.

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