SN4R7M100ST

Part Overview

The SN4R7M100ST is a 4.7 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete. Identifying qualified substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

SN4R7M100ST

Cornell Dubilier Electronics (CDE)In Stock: 780SN4R7M100ST Datasheet

Current PartRFQ

UVP2A4R7MED1TD

NichiconIn Stock: 5464UVP2A4R7MED1TD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical electrical parameters:

• Capacitance: 4.7 µF (exact match required)
• Tolerance: ±20% (minimum acceptable tolerance)
• Voltage Rating: 100 V (minimum required voltage)
• Operating Temperature Range: -40°C to 85°C (minimum compatibility)
• Package Type: Radial, Can (mechanical compatibility)
• Mounting Type: Through Hole (PCB compatibility)
• Polarization: Bi-Polar (functional equivalence)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The UVP2A4R7MED1TD from Nichicon meets all critical substitution criteria. This part maintains electrical equivalence while offering extended lifetime specifications and improved ripple current characteristics, making it a qualified substitute for the obsolete SN4R7M100ST.

Parameter Comparison

Engineering Selection Recommendations

The UVP2A4R7MED1TD is a qualified electrical and mechanical equivalent to the SN4R7M100ST. Both components are ROHS3 compliant and operate within the required temperature specifications. The Nichicon substitute offers superior lifetime ratings (2000 hours versus 1000 hours at 85°C), enhancing design reliability.

Physical dimensions differ slightly between the two parts. The SN4R7M100ST has a 0.315" (8.00 mm) diameter body with 0.138" (3.50 mm) lead spacing. The UVP2A4R7MED1TD has a 0.248" (6.30 mm) diameter body with 0.098" (2.50 mm) lead spacing. Verify PCB layout and footprint compatibility before implementation.

Frequently Asked Questions (FAQ)

Q: Can the UVP2A4R7MED1TD replace the SN4R7M100ST in existing designs?

A: Yes, both components share identical electrical ratings (4.7 µF, ±20% tolerance, 100 V) and operating temperature specifications (-40°C to 85°C). Verify PCB footprint compatibility, as physical dimensions and lead spacing differ between the two parts.

Q: What is the significance of the extended lifetime rating on the Nichicon part?

A: The UVP2A4R7MED1TD provides 2000 hours of operation at 85°C compared to 1000 hours for the original part. This extended lifetime improves overall system reliability and margin for thermal stress conditions.

Q: Are there any mechanical constraints when substituting these components?

A: Lead spacing and body diameter differ between parts. The Nichicon substitute has closer lead spacing (0.098" versus 0.138") and a smaller diameter (0.248" versus 0.315"). Confirm that existing PCB mounting holes and trace layouts accommodate these dimensional variations.

Q: What compliance standards apply to both components?

A: Both the SN4R7M100ST and UVP2A4R7MED1TD are ROHS3 compliant and carry EAR99 export classification. The Nichicon part is also REACH unaffected.

Q: How do ripple current ratings affect component selection?

A: The original CDE part is rated for 58 mA ripple current at 120 Hz, while the Nichicon substitute is rated for 47 mA. Ensure the application ripple current demand does not exceed 47 mA to maintain the substitute's safe operating margin.