SN4R7M035ST Equivalent & Substitute Parts Reference

Part Overview

The SN4R7M035ST is a 4.7 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making equivalent and 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	4.7 µF
Tolerance	±20%
Voltage - Rated	35 V
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bi-Polar
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.079" (2.00 mm)
Size / Dimension	0.197" Dia (5.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SN4R7M035ST is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 4.7 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 35 V minimum (equal or higher acceptable)
Polarization: Bi-Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.079" (2.00 mm) (exact match required)
Size / Dimension: 0.197" Dia (5.00 mm) (exact match required)

Secondary Considerations:

Operating Temperature Range: -40°C ~ 85°C (must be met or exceeded)
Lifetime @ Temperature: Higher values indicate improved reliability
RoHS Compliance: ROHS3 Compliant (regulatory requirement)

Substitute parts meeting all primary criteria are classified as direct equivalents. Parts with voltage ratings higher than 35 V remain functionally compatible within the same physical footprint and electrical specifications.

Parameter Comparison

Parameter	SN4R7M035ST (Main)	ECE-A1VN4R7U (Upgrade)	ECE-A1HN4R7U (Upgrade)	UVP1H4R7MDD (Similar)
Manufacturer	Cornell Dubilier Electronics	Panasonic Electronic Components	Panasonic Electronic Components	Nichicon
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	35 V	35 V	50 V	50 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Lifetime @ 85°C	1000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Polarization	Bi-Polar	Bi-Polar	Bi-Polar	Bi-Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)
Size / Dimension	0.197" Dia (5.00 mm)	0.197" Dia (5.00 mm)	0.197" Dia (5.00 mm)	0.197" Dia (5.00 mm)
Height - Seated (Max)	0.433" (11.00 mm)	0.472" (12.00 mm)	0.472" (12.00 mm)	0.492" (12.50 mm)
Product Status	Obsolete	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ECE-A1VN4R7U (Panasonic) - Primary Upgrade Path

The ECE-A1VN4R7U is the direct equivalent replacement for the SN4R7M035ST. Both parts share identical electrical specifications: 4.7 µF capacitance, ±20% tolerance, and 35 V voltage rating. The ECE-A1VN4R7U offers extended lifetime (2000 hours at 85°C versus 1000 hours), active product status ensuring long-term availability, and ROHS3 compliance. Physical dimensions match the original part with identical lead spacing (0.079" / 2.00 mm) and diameter (0.197" / 5.00 mm). The height difference of 0.039" (1.00 mm) is within typical PCB layout tolerances for through-hole components.

ECE-A1HN4R7U (Panasonic) - Higher Voltage Alternative

The ECE-A1HN4R7U provides a 50 V voltage rating while maintaining all other electrical and physical parameters identical to the SN4R7M035ST. This part is suitable for applications where higher voltage margin is beneficial. Active product status and extended lifetime (2000 hours at 85°C) provide superior reliability. The height increase of 0.039" (1.00 mm) requires verification against PCB clearance constraints.

UVP1H4R7MDD (Nichicon) - Secondary Alternative

The UVP1H4R7MDD is functionally compatible with a 50 V voltage rating and 2000-hour lifetime at 85°C. However, this part carries obsolete product status, limiting long-term procurement viability. The height of 0.492" (12.50 mm) represents a 0.059" (1.50 mm) increase over the original part and requires clearance verification.

Selection Criteria Summary:

For new designs or long-term production: Select ECE-A1VN4R7U for direct replacement or ECE-A1HN4R7U for enhanced voltage margin.

For legacy system maintenance: ECE-A1VN4R7U provides the most direct substitution with active availability.

All substitute parts maintain ROHS3 compliance and bi-polar polarization matching the original specification.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1HN4R7U (50 V) be used in place of SN4R7M035ST (35 V)?

A: Yes. The ECE-A1HN4R7U is electrically compatible. A higher voltage rating does not degrade performance in a 35 V application. The capacitance (4.7 µF), tolerance (±20%), polarization (bi-polar), and physical footprint (lead spacing 0.079" / 2.00 mm, diameter 0.197" / 5.00 mm) are identical. Verify PCB clearance for the increased height of 0.472" (12.00 mm) versus the original 0.433" (11.00 mm).

Q: What is the difference between ECE-A1VN4R7U and ECE-A1HN4R7U?

A: Both are Panasonic parts with identical capacitance, tolerance, and physical dimensions. The primary difference is voltage rating: ECE-A1VN4R7U is 35 V (matching the original), while ECE-A1HN4R7U is 50 V. Both offer 2000-hour lifetime at 85°C and active product status. Select ECE-A1VN4R7U for direct specification match or ECE-A1HN4R7U for applications requiring higher voltage margin.

Q: Is UVP1H4R7MDD a suitable long-term replacement?

A: UVP1H4R7MDD meets all electrical and physical compatibility criteria with 4.7 µF capacitance, ±20% tolerance, 50 V rating, and identical lead spacing. However, obsolete product status limits procurement viability for ongoing production. For new designs or extended production runs, ECE-A1VN4R7U or ECE-A1HN4R7U are preferred due to active availability.

Q: Will the height difference affect PCB assembly?

A: The substitute parts have maximum seated heights of 0.472" (12.00 mm) for Panasonic parts and 0.492" (12.50 mm) for the Nichicon part, compared to 0.433" (11.00 mm) for the original. This represents an increase of 0.039" to 0.059" (1.00 to 1.50 mm). Verify clearance against nearby components, solder bridges, and conformal coating requirements before implementation.

Q: Are all substitute parts RoHS compliant?

A: Yes. The SN4R7M035ST and all listed substitute parts (ECE-A1VN4R7U, ECE-A1HN4R7U, UVP1H4R7MDD) are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the ESR (Equivalent Series Resistance) of the substitute parts?

A: ESR values are not provided in the technical specifications for the substitute parts. The original SN4R7M035ST specifies 39.53 Ohm @ 120 Hz. For applications where ESR is critical, contact the manufacturer directly or consult detailed datasheets.

Q: Can these parts be used in high-frequency applications?

A: The ripple current specifications provided are limited to low-frequency (120 Hz) and high-frequency (10 kHz) measurements for the Panasonic ECE-A1HN4R7U (51 mA @ 10 kHz). For applications exceeding these frequency ranges, consult manufacturer datasheets for complete frequency response characteristics.

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