SS4R7M025ST Equivalent & Substitute Parts Reference

Part Overview

The SS4R7M025ST 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, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 1000 hours at 85°C, serving general-purpose applications requiring polar electrolytic capacitance.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage Rating	25 V
Tolerance	±20%
ESR @ 120 Hz	42.35 Ohm
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	24 mA
Ripple Current @ 1 kHz	26.4 mA
Lead Spacing	0.059" (1.50 mm)
Diameter	0.157" (4.00 mm)
Height (Seated Max)	0.276" (7.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SS4R7M025ST is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 4.7 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 25 V minimum (equal or higher acceptable)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.059" (1.50 mm) (exact match required)
Diameter: 0.157" (4.00 mm) (exact match required)

Secondary Compatibility Factors:

Operating Temperature Range: -40°C ~ 85°C minimum
Lifetime: 1000 Hrs @ 85°C minimum
RoHS3 Compliance

Substitute parts are grouped into three categories based on voltage rating and thermal performance:

Direct Equivalent (Same Voltage): ECE-A1EKS4R7, ECE-A1EKA4R7 — Both rated at 25 V with identical mechanical dimensions and lead spacing.

Upgrade Substitutes (Higher Voltage): ECE-A1VKA4R7 (35 V), ECE-A1HKA4R7 (50 V), EEA-GA1H4R7 (50 V) — Provide increased voltage margin while maintaining identical physical footprint and capacitance value.

Parameter Comparison

Parameter	SS4R7M025ST (CDE)	ECE-A1EKS4R7 (Panasonic)	ECE-A1EKA4R7 (Panasonic)	ECE-A1VKA4R7 (Panasonic)	ECE-A1HKA4R7 (Panasonic)	EEA-GA1H4R7 (Panasonic)
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Voltage Rating	25 V	25 V	25 V	35 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 85°C	1000 Hrs @ 105°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 105°C
Lead Spacing	0.059" (1.50 mm)	0.059" (1.50 mm)	0.059" (1.50 mm)	0.059" (1.50 mm)	0.059" (1.50 mm)	0.059" (1.50 mm)
Diameter	0.157" (4.00 mm)	0.157" (4.00 mm)	0.157" (4.00 mm)	0.157" (4.00 mm)	0.157" (4.00 mm)	0.157" (4.00 mm)
Height (Seated Max)	0.276" (7.00 mm)	0.236" (6.00 mm)	0.276" (7.00 mm)	0.276" (7.00 mm)	0.276" (7.00 mm)	0.276" (7.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Polarization	Polar	Polar	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

ECE-A1EKS4R7 and ECE-A1EKA4R7 are parametric equivalents to the SS4R7M025ST, both manufactured by Panasonic Electronic Components with active product status. Both parts maintain the 4.7 µF capacitance, ±20% tolerance, and 25 V voltage rating. ECE-A1EKA4R7 offers identical height (0.276") matching the original part, while ECE-A1EKS4R7 features a reduced height of 0.236", which may provide space optimization benefits in compact layouts. All three parts are ROHS3 compliant and rated for 1000 hours at 85°C operation.

For Enhanced Reliability (Higher Voltage Rating):

ECE-A1VKA4R7 (35 V), ECE-A1HKA4R7 (50 V), and EEA-GA1H4R7 (50 V) provide increased voltage margin while maintaining identical physical footprint and capacitance specifications. These upgrade substitutes are suitable for applications requiring additional voltage headroom or enhanced reliability margins. All three maintain ROHS3 compliance and active product status.

EEA-GA1H4R7 offers the highest thermal performance with operation to 105°C and lifetime rating of 1000 hours at 105°C, compared to 85°C for other alternatives. This part also extends the operating temperature range to -55°C ~ 105°C.

Compliance Considerations:

All substitute parts are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the original SS4R7M025ST. Panasonic parts include REACH Unaffected status where specified.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1EKS4R7 be used as a direct replacement for SS4R7M025ST?

A: ECE-A1EKS4R7 is a parametric equivalent with matching capacitance (4.7 µF), tolerance (±20%), voltage rating (25 V), and mechanical dimensions (0.157" diameter, 0.059" lead spacing). The primary difference is reduced height (0.236" versus 0.276"), which is compatible with through-hole PCB layouts designed for the original part. Both are rated for 1000 hours at 85°C operation.

Q: What is the difference between ECE-A1EKA4R7 and ECE-A1EKS4R7?

A: Both parts are 4.7 µF, 25 V Panasonic aluminum electrolytic capacitors with identical electrical specifications and lead spacing. ECE-A1EKA4R7 matches the original height of 0.276", while ECE-A1EKS4R7 has a reduced height of 0.236". Selection depends on available PCB clearance and layout constraints.

Q: Can I use a 50 V rated capacitor (ECE-A1HKA4R7 or EEA-GA1H4R7) in place of the 25 V SS4R7M025ST?

A: Yes. Both 50 V parts maintain identical capacitance (4.7 µF), tolerance (±20%), and physical dimensions (0.157" diameter, 0.059" lead spacing, 0.276" height). The higher voltage rating provides increased design margin and is electrically compatible with 25 V circuit requirements. Both parts are ROHS3 compliant and active products.

Q: What are the ripple current differences between substitute parts?

A: The SS4R7M025ST specifies 24 mA at 120 Hz and 26.4 mA at 1 kHz. ECE-A1EKS4R7 provides 22 mA at 120 Hz and 37.4 mA at 100 kHz. ECE-A1EKA4R7 specifies 37.4 mA at 10 kHz. ECE-A1VKA4R7 provides 37.4 mA at 10 kHz. ECE-A1HKA4R7 specifies 23 mA at 120 Hz and 39.1 mA at 10 kHz. EEA-GA1H4R7 provides 26 mA at 120 Hz and 40.3 mA at 100 kHz. Selection should account for application-specific ripple current requirements at operating frequencies.

Q: Why is the SS4R7M025ST marked as obsolete?

A: The SS4R7M025ST is an obsolete CDE product. Active Panasonic equivalents (ECE-A1EKS4R7, ECE-A1EKA4R7, ECE-A1VKA4R7, ECE-A1HKA4R7, EEA-GA1H4R7) provide continued design support and production availability for new and legacy applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The SS4R7M025ST and all listed substitute parts (ECE-A1EKS4R7, ECE-A1EKA4R7, ECE-A1VKA4R7, ECE-A1HKA4R7, EEA-GA1H4R7) are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the height difference between ECE-A1EKS4R7 and other substitutes?

A: ECE-A1EKS4R7 has a seated height of 0.236" (6.00 mm), which is 0.040" shorter than the original SS4R7M025ST and other substitutes at 0.276" (7.00 mm). This reduced height may provide space optimization in compact PCB designs but requires verification of available clearance in the target application.

Q: Can I mix different substitute parts in the same circuit?

A: All substitute parts maintain identical capacitance (4.7 µF), tolerance (±20%), and mechanical compatibility (lead spacing, diameter). Mixing parts with different voltage ratings (25 V, 35 V, 50 V) in the same circuit is electrically compatible. However, design practice typically standardizes on a single part number per circuit to simplify procurement, inventory management, and quality control.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message