Equivalent & Substitute Parts for 278KXM025M

Part Overview

The 278KXM025M is a 2700 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general purpose applications. The capacitor operates across a temperature range of -55°C to 105°C with a rated lifetime of 5000 hours at 105°C. Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling procurement flexibility while maintaining circuit performance specifications.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	2700	µF	Critical - Must match exactly
Voltage - Rated	25	V	Critical - Must match exactly
Tolerance	±20%	%	Critical - Must match exactly
Operating Temperature Range	-55°C to 105°C	°C	Critical - Must match or exceed
Polarization	Polar	-	Critical - Must match exactly
Package / Case	Radial, Can	-	Critical - Must match exactly
Mounting Type	Through Hole	-	Critical - Must match exactly
Lead Spacing	0.295" (7.50mm)	in (mm)	Critical - Must match exactly
Size / Dimension	0.630" Dia (16.00mm)	in (mm)	Critical - Must match exactly
Height - Seated (Max)	1.063" (27.00mm)	in (mm)	Critical - Must match exactly
RoHS Status	ROHS3 Compliant	-	Compliance - Must match or exceed

Substitute Part Grouping Explanation

Substitute parts for the 278KXM025M are identified based on strict equivalence of electrical and mechanical parameters. The substitution logic is as follows:

Electrical Parameters (Must Match Exactly):

Capacitance: 2700 µF
Voltage Rating: 25 V
Tolerance: ±20%
Polarization: Polar

Mechanical Parameters (Must Match Exactly):

Package Type: Radial, Can
Mounting Type: Through Hole
Lead Spacing: 0.295" (7.50mm)
Diameter: 0.630" (16.00mm)
Height: 1.063" (27.00mm)

Environmental Parameters (Must Match or Exceed):

Operating Temperature Range: -55°C to 105°C
RoHS Compliance: ROHS3 Compliant

The substitute part B41888D5278M000 meets all critical electrical and mechanical parameters. Performance characteristics such as ESR, lifetime rating, and ripple current capacity may vary within acceptable ranges for the application category.

Parameter Comparison

Parameter	278KXM025M (Main Part)	B41888D5278M000 (Substitute)	Match Status
Manufacturer	Cornell Dubilier / Illinois Capacitor	EPCOS - TDK Electronics	Different Manufacturer
Series	KXM	B41888	Different Series
Capacitance	2700 µF	2700 µF	Exact Match
Tolerance	±20%	±20%	Exact Match
Voltage - Rated	25 V	25 V	Exact Match
Operating Temperature	-55°C to 105°C	-55°C to 105°C	Exact Match
Polarization	Polar	Polar	Exact Match
Package / Case	Radial, Can	Radial, Can	Exact Match
Mounting Type	Through Hole	Through Hole	Exact Match
Lead Spacing	0.295" (7.50mm)	0.295" (7.50mm)	Exact Match
Size / Dimension	0.630" Dia (16.00mm)	0.630" Dia (16.00mm)	Exact Match
Height - Seated (Max)	1.063" (27.00mm)	1.063" (27.00mm)	Exact Match
ESR @ Reference Frequency	86 mOhm @ 120 Hz	24 mOhm @ 10 kHz	Different - Lower ESR
Lifetime @ 105°C	5000 Hrs	10000 Hrs	Different - Extended Lifetime
Ripple Current @ 100 kHz	3 A	2.93 A	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact Match
Product Status	Active	Active	Exact Match

Engineering Selection Recommendations

Substitution Eligibility:

The B41888D5278M000 is a qualified substitute for the 278KXM025M based on matching electrical specifications (capacitance, voltage rating, tolerance, polarization) and identical mechanical dimensions (package type, lead spacing, physical size, mounting configuration).

Compliance Considerations:

Both parts maintain ROHS3 compliance and are classified as Active products. The substitute part carries AEC-Q200 automotive qualification, which represents an additional compliance credential beyond the base requirement.

Performance Characteristics:

The substitute part demonstrates improved electrical performance characteristics: lower ESR (24 mOhm @ 10 kHz versus 86 mOhm @ 120 Hz) and extended lifetime rating (10000 hours @ 105°C versus 5000 hours @ 105°C). These represent performance enhancements rather than deviations from specification.

Procurement Context:

Selection between the main part and substitute should be based on availability, lead time, cost considerations, and specific application requirements. Both parts are Active status with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can B41888D5278M000 be used as a direct replacement for 278KXM025M in existing designs?

A: Yes. The substitute part matches all critical electrical parameters (2700 µF, 25 V, ±20% tolerance) and mechanical specifications (radial can package, through-hole mounting, identical lead spacing and physical dimensions). Direct PCB substitution is supported without design modification.

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

A: The primary differences are manufacturer (Cornell Dubilier / Illinois Capacitor versus EPCOS - TDK Electronics) and performance characteristics. The substitute part features lower ESR and extended lifetime rating. Both parts operate across identical temperature ranges and maintain equivalent compliance certifications.

Q: Does the lower ESR of the substitute part affect circuit compatibility?

A: Lower ESR is a performance enhancement. It reduces impedance and heat generation, which are beneficial characteristics in most applications. No circuit redesign is required.

Q: Are there any packaging or mounting differences?

A: No. Both parts use identical radial can packages with matching lead spacing (0.295" / 7.50mm), diameter (0.630" / 16.00mm), and height (1.063" / 27.00mm). Through-hole mounting configuration is identical.

Q: Which part should be selected for new designs?

A: Selection should be based on availability, procurement lead time, and cost. Both parts are Active status. The substitute part offers extended lifetime and lower ESR, which may provide additional design margin in applications requiring these characteristics.

Q: Are both parts RoHS compliant?

A: Yes. Both 278KXM025M and B41888D5278M000 are ROHS3 compliant. The substitute part additionally carries AEC-Q200 automotive qualification.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 105°C. Lifetime rating at 105°C differs: 5000 hours for the main part and 10000 hours for the substitute.

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