Equivalent & Substitute Parts for SN2R2M025ST

Part Overview

The SN2R2M025ST is a 2.2 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, which necessitates identification of equivalent and substitute parts 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 an ESR of 90.47 Ohm. Substitute parts must maintain electrical compatibility while accounting for potential improvements in performance characteristics and product availability.

Substiute Parts

SN2R2M025ST

Cornell Dubilier Electronics (CDE)In Stock: 1144SN2R2M025ST Datasheet

Current PartRFQ

ECE-A1HN2R2U

Panasonic Electronic ComponentsIn Stock: 8099ECE-A1HN2R2U Datasheet

UpgradeRFQ

UVP1H2R2MDD

NichiconIn Stock: 9719UVP1H2R2MDD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN2R2M025ST are identified based on strict electrical and mechanical compatibility criteria. The substitution logic is structured as follows:

Electrical Compatibility Requirements:

• Capacitance value must equal 2.2 µF
• Voltage rating must be 25 V or higher (substitutes at 50 V are acceptable as they provide derating margin)
• Tolerance must be ±20% or tighter
• Operating temperature range must encompass -40°C to 85°C
• Polarization must remain Bi-Polar
• RoHS3 compliance must be maintained

Mechanical Compatibility Requirements:

• Mounting type must be Through Hole
• Package type must be Radial, Can
• Lead spacing must be 0.079" (2.00mm)
• Physical dimensions (diameter and height) must accommodate PCB layout constraints

Identified Substitutes:

1. ECE-A1HN2R2U (Panasonic Electronic Components) - Upgrade substitute with enhanced voltage rating (50 V) and extended lifetime (2000 Hrs @ 85°C). Product status is Active.

2. UVP1H2R2MDD (Nichicon) - Similar substitute with 50 V voltage rating and 2000 Hrs @ 85°C lifetime. Product status is Obsolete.

Both substitutes meet all critical electrical and mechanical parameters while providing performance improvements over the original part.

Parameter Comparison

Engineering Selection Recommendations

ECE-A1HN2R2U (Panasonic Electronic Components) - Primary Substitute

The ECE-A1HN2R2U is the recommended primary substitute for the SN2R2M025ST. This part is classified as Active product status, ensuring long-term availability and supply chain continuity. The 50 V voltage rating provides a 2:1 derating margin relative to the original 25 V specification, enhancing reliability in the application. The extended lifetime rating of 2000 Hrs @ 85°C doubles the original specification, improving long-term performance stability. All electrical and mechanical parameters align with substitution requirements. RoHS3 compliance is maintained. The height dimension increases by 0.039" (1.00mm) to 0.472" (12.00mm); PCB layout clearance must be verified.

UVP1H2R2MDD (Nichicon) - Secondary Substitute

The UVP1H2R2MDD serves as a secondary substitute option. This part maintains identical height to the original SN2R2M025ST at 0.433" (11.00mm), eliminating height-related PCB clearance concerns. The 50 V voltage rating and 2000 Hrs @ 85°C lifetime provide equivalent performance improvements to the primary substitute. However, product status is classified as Obsolete, which may limit future procurement availability. RoHS3 compliance and all electrical parameters are maintained.

Selection Criteria:

• For new designs or long-term production: Select ECE-A1HN2R2U (Active status, superior availability)
• For space-constrained applications: Verify PCB clearance; if height constraint exists, UVP1H2R2MDD maintains original height
• Both substitutes provide enhanced reliability through higher voltage rating and extended lifetime

Frequently Asked Questions (FAQ)

Q1: Can the ECE-A1HN2R2U replace the SN2R2M025ST directly without circuit modification?

A: Yes. The ECE-A1HN2R2U maintains identical capacitance (2.2 µF), tolerance (±20%), operating temperature range (-40°C to 85°C), polarization (Bi-Polar), and mechanical form factor (lead spacing 0.079", diameter 0.197"). The 50 V rating exceeds the original 25 V specification, providing additional derating margin. No circuit modification is required. Verify PCB clearance for the increased height of 0.472" (12.00mm) versus the original 0.433" (11.00mm).

Q2: What is the significance of the voltage rating increase from 25 V to 50 V?

A: The higher voltage rating provides a 2:1 derating margin, which improves capacitor reliability and extends operational life in the circuit. This is a beneficial characteristic for substitution and does not create incompatibility. The capacitor will function correctly at the original 25 V operating voltage.

Q3: Why is the lifetime specification important for substitution?

A: The lifetime specification (1000 Hrs @ 85°C for the original, 2000 Hrs @ 85°C for substitutes) indicates the expected operational duration under thermal stress. The doubled lifetime in substitute parts reflects improved internal construction and materials, enhancing long-term reliability. This is a performance improvement, not a compatibility concern.

Q4: Does the height difference between ECE-A1HN2R2U (0.472") and the original SN2R2M025ST (0.433") affect compatibility?

A: The 0.039" (1.00mm) height increase must be verified against PCB layout constraints and component clearance requirements. If the application has height restrictions, the UVP1H2R2MDD maintains the original 0.433" height. For most applications with standard PCB spacing, the increased height presents no functional issue.

Q5: Are both substitute parts RoHS3 compliant?

A: Yes. Both ECE-A1HN2R2U and UVP1H2R2MDD are ROHS3 Compliant, maintaining regulatory compliance equivalent to the original SN2R2M025ST.

Q6: Why is the ECE-A1HN2R2U recommended as the primary substitute despite the height increase?

A: The ECE-A1HN2R2U is classified as Active product status, ensuring reliable long-term availability and supply chain support. The UVP1H2R2MDD, while functionally equivalent, is classified as Obsolete, which may result in future procurement difficulties. For new designs and ongoing production, the Active status of the Panasonic part provides superior supply chain continuity.

Q7: Can the UVP1H2R2MDD be used if height is a critical constraint?

A: Yes. The UVP1H2R2MDD maintains the original height of 0.433" (11.00mm) and meets all electrical and mechanical substitution criteria. However, verify that Nichicon UVP series availability aligns with your procurement timeline, as the part is classified as Obsolete.

Q8: What parameters must remain identical for substitution to be valid?

A: The following parameters must match or exceed the original specification: capacitance (2.2 µF), tolerance (±20%), operating temperature range (-40°C to 85°C), polarization (Bi-Polar), mounting type (Through Hole), package type (Radial, Can), and lead spacing (0.079" / 2.00mm). Voltage rating may be higher, and lifetime may be extended without creating incompatibility.