277KXM063M

Part Overview

The 277KXM063M is a 270 µF, 63 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This general-purpose component operates across a temperature range of -55°C to 105°C with a rated lifetime of 5000 hours at 105°C. The part is currently active and in stock with 951 pieces available. Equivalent and substitute parts are necessary to address design flexibility, supply chain continuity, and application-specific requirements such as automotive compliance or extended operating life.

Key Parameters

Parameter	Specification
Capacitance	270 µF
Voltage Rating	63 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Maximum Height	1.063" (27.00 mm)
Operating Temperature	-55°C to 105°C
Polarization	Polar
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution for the 277KXM063M is based on strict electrical and mechanical compatibility. All substitute parts must match the following primary parameters:

Capacitance: 270 µF
Voltage Rating: 63 V
Tolerance: ±20%
Package Type: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.492" (12.50 mm)
Operating Temperature Range: -55°C to 105°C
Polarization: Polar
Mounting Type: Through Hole

The substitute parts identified—ELXY630ELL271MK25S (Chemi-Con, LXY series) and UPM1J271MHD (Nichicon, UPM series)—satisfy these core requirements. Secondary considerations include lifetime at rated temperature, ESR characteristics, ripple current ratings, and product status for new design applications.

Parameter Comparison

Parameter	277KXM063M (Cornell Dubilier)	ELXY630ELL271MK25S (Chemi-Con)	UPM1J271MHD (Nichicon)
Capacitance	270 µF	270 µF	270 µF
Voltage Rating	63 V	63 V	63 V
Tolerance	±20%	±20%	±20%
Series	KXM	LXY	UPM
Product Status	Active	Active	Not For New Designs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Lifetime @ 105°C	5000 Hrs	7000 Hrs	5000 Hrs
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)
Height (Max)	1.063" (27.00 mm)	1.043" (26.50 mm)	1.063" (27.00 mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

ELXY630ELL271MK25S (Chemi-Con LXY Series): This upgrade substitute is the preferred choice for new designs. It is product status active, ROHS3 compliant, REACH unaffected, and carries AEC-Q200 automotive certification. The extended lifetime of 7000 hours at 105°C provides superior reliability compared to the original part. Mechanical compatibility is assured with a maximum height of 1.043 inches, which is within the 1.063-inch maximum envelope. This part supports automotive applications.

UPM1J271MHD (Nichicon UPM Series): This parametric equivalent carries AEC-Q200 automotive certification and ROHS3 compliance. However, its product status is listed as "Not For New Designs," making it unsuitable for new design implementations. This part is available only for legacy or existing application support where design continuity is required. REACH status is listed as affected, which may impose sourcing or documentation requirements depending on regulatory jurisdiction.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 277KXM063M with either the ELXY630ELL271MK25S or UPM1J271MHD?

A: Both parts are electrically and mechanically compatible. The ELXY630ELL271MK25S is suitable for both new and existing designs. The UPM1J271MHD is limited to existing applications due to its "Not For New Designs" status.

Q: What is the primary difference between these substitute parts?

A: The ELXY630ELL271MK25S offers extended operating life (7000 hours at 105°C versus 5000 hours), active product status, and REACH unaffected compliance. The UPM1J271MHD has lower impedance (55 mOhms) but is not recommended for new designs.

Q: Are there any height restrictions when using the ELXY630ELL271MK25S?

A: The ELXY630ELL271MK25S maximum height is 1.043 inches, compared to 1.063 inches for the original part. This 0.02-inch reduction is within typical PCB layout tolerances and does not restrict pin-to-pin or land pattern compatibility.

Q: Does the lead spacing remain constant across all three parts?

A: Yes. All three parts—277KXM063M, ELXY630ELL271MK25S, and UPM1J271MHD—maintain identical lead spacing of 0.197 inches (5.00 mm), ensuring direct PCB footprint compatibility.

Q: Which part should I specify for automotive applications?

A: For new automotive designs, specify ELXY630ELL271MK25S, which carries AEC-Q200 certification and is active product status. For legacy automotive platforms using the original 277KXM063M, the UPM1J271MHD also carries AEC-Q200 certification but is not recommended for new designs.

Q: How do I account for the differences in ESR and ripple current ratings?

A: The provided ESR and ripple current specifications are design-dependent. All three parts share the same fundamental electrical ratings (270 µF at 63 V). Variation in ESR and ripple current reflect manufacturing series characteristics. Component selection should be based on the parametric requirements of your specific circuit application.

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