Equivalent & Substitute Parts for UAS2G270MHD

Part Overview

The UAS2G270MHD is a 27 µF, 400 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 2000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is Active status and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part is unavailable, when design requirements demand extended operational lifetime, or when higher voltage ratings are required for enhanced system reliability.

Key Parameters

Parameter	Value
Capacitance	27 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.197" (5.00mm)
Case Diameter	0.492" (12.50mm)
Height	1.063" (27.00mm)
Mounting Type	Through Hole
Package Type	Radial, Can

Substitute Part Grouping Explanation

Substitution eligibility for the UAS2G270MHD is determined by the following critical parameters:

Capacitance: Must be 27 µF (no tolerance variation permitted)
Voltage Rating: Minimum 400 V (equal or higher acceptable)
Tolerance: ±20% (matching specification)
Polarization: Polar (radial aluminum electrolytic)
Lead Spacing: 0.197" (5.00mm)
Case Diameter: 0.492" (12.50mm)
Mounting Type: Through Hole
Package Type: Radial, Can

Parts are grouped into two categories:

Direct Equivalents maintain all electrical and mechanical parameters at 400 V rating: UCY2G270MHD, 400BXW27MEFR12.5X20, and EKXL401ELL270MK20S.

Upgrade Option provides enhanced voltage rating at 450 V: 450BXW27MEFR12.5X25. This part maintains all other parameters and is suitable for applications requiring higher voltage margin.

Parameter Comparison

Parameter	UAS2G270MHD	UCY2G270MHD	400BXW27MEFR12.5X20	EKXL401ELL270MK20S	450BXW27MEFR12.5X25
Manufacturer	Nichicon	Nichicon	Rubycon	Chemi-Con	Rubycon
Series	UAS	UCY	BXW	KXL	BXW
Capacitance	27 µF	27 µF	27 µF	27 µF	27 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage Rating	400 V	400 V	400 V	400 V	450 V
Lifetime @ 105°C	2000 Hrs	12000 Hrs	10000 Hrs	10000 Hrs	12000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Ripple Current @ 120 Hz	200 mA	360 mA	340 mA	300 mA	340 mA
Ripple Current @ 100 kHz	320 mA	720 mA	850 mA	750 mA	850 mA
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Case Diameter	0.492" (12.50mm)	0.492" (12.50mm)	0.492" (12.50mm)	0.492" (12.50mm)	0.492" (12.50mm)
Height	1.063" (27.00mm)	0.846" (21.50mm)	0.866" (22.00mm)	0.866" (22.00mm)	1.063" (27.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalents at 400 V Rating:

UCY2G270MHD (Nichicon) provides the longest operational lifetime at 12000 hours @ 105°C with increased ripple current handling. This part is suitable for applications requiring extended service life and higher current capacity while maintaining the original voltage specification.

400BXW27MEFR12.5X20 (Rubycon) and EKXL401ELL270MK20S (Chemi-Con) both offer 10000 hours @ 105°C lifetime with moderate height reduction compared to the original part. These are suitable for space-constrained applications where the original height of 1.063" cannot be accommodated.

Upgrade Option at 450 V Rating:

450BXW27MEFR12.5X25 (Rubycon) maintains the original height specification while providing 450 V rating and 12000 hours @ 105°C lifetime. This part is suitable for applications requiring enhanced voltage margin and extended operational life.

All substitute parts are Active status and ROHS3 compliant, ensuring regulatory compliance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can UCY2G270MHD be used as a direct replacement for UAS2G270MHD?

A: Yes. Both parts share identical capacitance (27 µF), voltage rating (400 V), tolerance (±20%), lead spacing (5.00mm), case diameter (12.50mm), and mounting type (through hole). The UCY2G270MHD has a reduced height of 0.846" compared to 1.063", which must be verified against PCB layout constraints.

Q: What is the difference between the 400 V and 450 V rated parts?

A: The 450BXW27MEFR12.5X25 provides a higher voltage rating (450 V) compared to the 400 V rating of the original part and other direct equivalents. All other electrical parameters remain identical. The 450 V part maintains the original height of 1.063".

Q: Are there height differences between substitute parts?

A: Yes. The original UAS2G270MHD and 450BXW27MEFR12.5X25 are both 1.063" (27.00mm) in height. The UCY2G270MHD, 400BXW27MEFR12.5X20, and EKXL401ELL270MK20S are reduced height at 0.846" to 0.866". PCB layout must accommodate the selected part's height specification.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All listed parts are ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: Which substitute part offers the best ripple current performance?

A: The 400BXW27MEFR12.5X20 and 450BXW27MEFR12.5X25 (both Rubycon BXW series) provide the highest ripple current ratings at 850 mA @ 100 kHz, compared to 320 mA for the original UAS2G270MHD.

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