SN4R7M025ST Equivalent & Substitute Parts Reference

Part Overview

The SN4R7M025ST is a 4.7 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, indicating discontinued production and limited availability for new procurement. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 1000 hours at 85°C and features bi-polar polarization suitable for general-purpose applications.

Due to obsolete status and finite inventory, identifying equivalent and substitute parts from active manufacturers ensures design continuity and supply chain reliability for applications requiring 4.7 µF aluminum electrolytic capacitors in radial configuration.

Substiute Parts

SN4R7M025ST

Cornell Dubilier Electronics (CDE)In Stock: 1125SN4R7M025ST Datasheet

Current PartRFQ

ECE-A1HN4R7U

Panasonic Electronic ComponentsIn Stock: 14022ECE-A1HN4R7U Datasheet

UpgradeRFQ

ECE-A1VN4R7U

Panasonic Electronic ComponentsIn Stock: 2493ECE-A1VN4R7U Datasheet

UpgradeRFQ

ECE-A1EN4R7U

Panasonic Electronic ComponentsIn Stock: 8840ECE-A1EN4R7U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN4R7M025ST is determined by strict equivalence in the following parameters:

Primary Equivalence Criteria:

• Capacitance value: 4.7 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package configuration: Radial, Can (exact match required)
• Lead spacing: 0.079" (2.00 mm) (exact match required)
• Case diameter: 0.197" (5.00 mm) (exact match required)
• Mounting type: Through Hole (exact match required)
• Operating temperature range: -40°C to 85°C (exact match required)
• Polarization: Bi-Polar (exact match required)

Secondary Compatibility Parameters:

• Voltage rating: May be equal to or greater than 25 V
• Lifetime at temperature: May be equal to or greater than 1000 Hrs @ 85°C
• RoHS compliance: ROHS3 Compliant (maintained)

All substitute parts listed are manufactured by Panasonic Electronic Components and maintain active product status, ensuring ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

ECE-A1EN4R7U (Similar Substitute): This part provides direct functional equivalence to the SN4R7M025ST. Both components share identical capacitance (4.7 µF), voltage rating (25 V), tolerance (±20%), and physical dimensions. The ECE-A1EN4R7U is manufactured by Panasonic Electronic Components with active product status, ensuring reliable supply. The component offers doubled lifetime rating (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C) and maintains ROHS3 compliance. Height dimension increases from 0.433" to 0.472", requiring verification of available board space. This substitute is recommended for direct replacement in applications where the original 25 V rating is specified and adequate.

ECE-A1VN4R7U (Upgrade Substitute): This part maintains all physical and electrical parameters of the SN4R7M025ST except voltage rating, which increases to 35 V. The higher voltage rating provides additional design margin in applications subject to voltage transients or overvoltage conditions. Capacitance, tolerance, lead spacing, case diameter, and operating temperature range remain identical. Lifetime rating doubles to 2000 Hrs @ 85°C. Height dimension increases to 0.472". ROHS3 compliance is maintained. This substitute is suitable for applications where 25 V operation is required but higher voltage margin is beneficial.

ECE-A1HN4R7U (Upgrade Substitute): This part provides the highest voltage rating at 50 V while maintaining identical capacitance (4.7 µF), tolerance (±20%), and physical form factor. Lead spacing and case diameter remain at specified values. Lifetime rating is 2000 Hrs @ 85°C. Height dimension increases to 0.472". ROHS3 compliance is maintained. This substitute offers maximum voltage margin for applications requiring enhanced overvoltage protection or operation in variable voltage environments.

All three substitute parts are electrically and mechanically compatible with the SN4R7M025ST within the specified parameters. Selection between similar and upgrade options depends on application voltage requirements and available board space for the increased height dimension.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1EN4R7U directly replace SN4R7M025ST in existing designs?

A: Yes. The ECE-A1EN4R7U maintains identical capacitance (4.7 µF), voltage rating (25 V), tolerance (±20%), lead spacing (0.079" / 2.00 mm), case diameter (0.197" / 5.00 mm), and operating temperature range (-40°C to 85°C). The height dimension increases from 0.433" to 0.472", requiring verification that available board space accommodates this 0.039" (1.00 mm) increase.

Q: What is the difference between "Similar" and "Upgrade" substitute classifications?

A: ECE-A1EN4R7U is classified as "Similar" because it matches the SN4R7M025ST in all critical parameters including voltage rating. ECE-A1VN4R7U and ECE-A1HN4R7U are classified as "Upgrade" because they provide higher voltage ratings (35 V and 50 V respectively) while maintaining all other specifications. Upgrade substitutes offer additional design margin but are not required for applications specified at 25 V.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SN4R7M025ST and all three substitute parts (ECE-A1EN4R7U, ECE-A1VN4R7U, ECE-A1HN4R7U) are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the impact of increased height dimension on PCB layout?

A: The substitute parts increase in height from 0.433" (11.00 mm) to 0.472" (12.00 mm), representing a 0.039" (1.00 mm) increase. This dimension change requires verification of available vertical clearance on the printed circuit board, including consideration of adjacent components, enclosure constraints, and thermal management requirements.

Q: Do the substitute parts have different ripple current ratings?

A: The SN4R7M025ST specifies 34 mA @ 120 Hz ripple current. ECE-A1EN4R7U specifies 42.5 mA @ 10 kHz ripple current. ECE-A1VN4R7U does not specify ripple current in provided data. ECE-A1HN4R7U specifies 30 mA @ 120 Hz and 51 mA @ 10 kHz. Applications requiring specific ripple current performance should reference manufacturer datasheets for complete specifications.

Q: Why do substitute parts have longer lifetime ratings?

A: The substitute parts specify 2000 Hrs @ 85°C lifetime compared to 1000 Hrs @ 85°C for the SN4R7M025ST. This reflects manufacturing improvements in Panasonic's aluminum electrolytic capacitor technology. Extended lifetime provides enhanced reliability margin in applications subject to sustained elevated temperature operation.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in Bulk packaging as radial, can-type aluminum electrolytic capacitors with through-hole mounting configuration, matching the SN4R7M025ST package type and mounting method.

Q: What is the lead spacing tolerance for these components?

A: All parts, including the main component and substitutes, specify lead spacing of 0.079" (2.00 mm). This standardized spacing ensures compatibility with existing PCB footprints designed for the SN4R7M025ST.