SN2R2M050ST Equivalent & Substitute Parts Reference

Part Overview

The SN2R2M050ST is a 2.2 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 1000 hours at 85°C and is suitable for general-purpose applications requiring through-hole mounting.

Key Parameters

Parameter	Value
Capacitance	2.2 µF
Voltage Rating	50 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.079" (2.00 mm)
Diameter	0.197" (5.00 mm)
Operating Temperature Range	-40°C to 85°C
Polarization	Bi-Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN2R2M050ST are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Electrical Parameters:

Capacitance: 2.2 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Bi-Polar (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)

Mechanical Parameters:

Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.079" (2.00 mm) (exact match required)
Diameter: 0.197" (5.00 mm) (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (exact match required)

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the SN2R2M050ST in applications where the specified parameters are required.

Parameter Comparison

Parameter	SN2R2M050ST (CDE)	UVP1H2R2MDD (Nichicon)	ECE-A1HN2R2U (Panasonic)
Capacitance	2.2 µF	2.2 µF	2.2 µF
Voltage Rating	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Operating Temperature Range	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Polarization	Bi-Polar	Bi-Polar	Bi-Polar
Lead Spacing	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)
Diameter	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Height (Max)	0.433" (11.00 mm)	0.433" (11.00 mm)	0.472" (12.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Obsolete	Active
Lifetime @ 85°C	1000 Hrs	2000 Hrs	2000 Hrs

Engineering Selection Recommendations

UVP1H2R2MDD (Nichicon): This part is classified as obsolete but meets all electrical and mechanical requirements for direct substitution. The UVP1H2R2MDD provides extended lifetime performance at 2000 hours at 85°C compared to the original 1000 hours, offering improved reliability margins. ROHS3 compliance is confirmed. This part is suitable for applications where obsolete component replacement is required with equivalent performance characteristics.

ECE-A1HN2R2U (Panasonic): This part is classified as active product status, providing long-term availability and supply chain continuity. The ECE-A1HN2R2U meets all electrical and mechanical requirements for direct substitution. Lifetime performance is rated at 2000 hours at 85°C. ROHS3 compliance and REACH unaffected status are confirmed. The maximum height is 0.472" (12.00 mm), which is 0.039" (1.00 mm) greater than the original part. This height difference must be verified against PCB layout constraints before selection. This part is the preferred choice for new designs and long-term production support due to active product status.

Frequently Asked Questions (FAQ)

Q: Can UVP1H2R2MDD and ECE-A1HN2R2U be used interchangeably with SN2R2M050ST?

A: Both parts meet the specified electrical parameters (2.2 µF, 50 V, ±20% tolerance) and mechanical parameters (radial can package, through-hole mounting, 0.079" lead spacing, 0.197" diameter). They are electrically and mechanically interchangeable. However, the ECE-A1HN2R2U has a maximum height of 0.472" (12.00 mm) versus 0.433" (11.00 mm) for the original part. PCB layout verification is required to confirm clearance.

Q: What is the difference in lifetime performance?

A: The SN2R2M050ST is rated for 1000 hours at 85°C. Both substitute parts (UVP1H2R2MDD and ECE-A1HN2R2U) are rated for 2000 hours at 85°C, providing doubled lifetime performance under the same thermal conditions.

Q: Why is ECE-A1HN2R2U preferred over UVP1H2R2MDD?

A: ECE-A1HN2R2U carries active product status, ensuring ongoing availability and supply chain support. UVP1H2R2MDD is classified as obsolete. For new designs and production continuity, active product status is preferred.

Q: Are there any compliance differences between the substitute parts?

A: All three parts are ROHS3 compliant. ECE-A1HN2R2U additionally confirms REACH unaffected status. Both substitute parts meet the same regulatory requirements as the original SN2R2M050ST.

Q: What is the impact of the height difference in ECE-A1HN2R2U?

A: ECE-A1HN2R2U has a maximum seated height of 0.472" (12.00 mm) compared to 0.433" (11.00 mm) for SN2R2M050ST. This 0.039" (1.00 mm) difference must be evaluated against PCB layout, component clearance, and enclosure constraints before final selection.

Q: Are ripple current ratings identical across all parts?

A: The SN2R2M050ST specifies 25 mA at 120 Hz. UVP1H2R2MDD specifies 25 mA at 120 Hz and 50 mA at 10 kHz. ECE-A1HN2R2U specifies 18 mA at 120 Hz and 30.6 mA at 10 kHz. These differences should be evaluated against application ripple current requirements.

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