Equivalent & Substitute Parts for 476SAK025M

Part Overview

The 476SAK025M is a 47 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the SAK series. This radial, through-hole component is rated for 2000 hours at 85°C and is currently in active product status. The part features an ESR of 5.644 Ohm @ 120 Hz and operates across a temperature range of -40°C to 85°C.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand enhanced performance characteristics such as extended lifetime or higher temperature ratings, or when alternative manufacturers' components offer superior electrical properties while maintaining functional compatibility.

Key Parameters

Parameter	476SAK025M
Capacitance	47 µF
Voltage Rating	25 V
Tolerance	±20%
ESR @ 120 Hz	5.644 Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	110 mA
Ripple Current @ 10 kHz	220 mA
Lead Spacing	0.079" (2.00 mm)
Case Diameter	0.197" (5.00 mm)
Height (Seated Max)	0.413" (10.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution compatibility for the 476SAK025M is determined by the following critical parameters:

Primary Compatibility Criteria:

Capacitance: 47 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (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)
Case Diameter: 0.197" (5.00 mm) (exact match required)

Secondary Performance Parameters (Enhancement Allowed):

Lifetime @ Temperature: 2000 Hrs @ 85°C or higher
Operating Temperature Range: -40°C ~ 85°C or wider
ESR: 5.644 Ohm or lower (lower ESR indicates improved performance)
Ripple Current: 110 mA @ 120 Hz or higher (higher ripple current indicates improved performance)

Substitute parts are classified into two categories:

Direct Substitutes (Same Electrical Specifications): Parts meeting all primary criteria with equivalent or superior secondary performance parameters. These include UFW1E470MDD, UKW1E470MDD, and UPW1E470MDD from Nichicon.

Upgrade Substitutes (Enhanced Performance): Parts meeting all primary criteria while offering extended lifetime ratings, wider temperature ranges, or improved ESR characteristics. These include 517D476M025JA6AE3 (Vishay Sprague), EEU-EB1E470S (Panasonic), EKZE250ELL470ME11D (Chemi-Con), and UFW1V470MDD / UKW1V470MDD (Nichicon 35V variants).

Similar Parts (Different Voltage Rating): SK470M025ST from Cornell Dubilier Electronics maintains identical capacitance, voltage, tolerance, and mechanical specifications but is classified as a similar part due to different manufacturer origin within the same company family.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	ESR	Ripple Current @ 120 Hz	Height (Max)	Product Status
476SAK025M	Cornell Dubilier / Illinois Capacitor	47 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	5.644 Ohm	110 mA	0.413" (10.50 mm)	Active
UFW1E470MDD	Nichicon	47 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	115 mA	0.492" (12.50 mm)	Obsolete
UKW1E470MDD	Nichicon	47 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	115 mA	0.433" (11.00 mm)	Obsolete
UPW1E470MDD	Nichicon	47 µF	25 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	—	54 mA	0.433" (11.00 mm)	Obsolete
517D476M025JA6AE3	Vishay Sprague	47 µF	25 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	—	90 mA	0.433" (11.00 mm)	Obsolete
EEU-EB1E470S	Panasonic Electronic Components	47 µF	25 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	—	55 mA	0.472" (12.00 mm)	Active
EKZE250ELL470ME11D	Chemi-Con	47 µF	25 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	300 mOhms	100 mA	0.492" (12.50 mm)	Active
SK470M025ST	Cornell Dubilier Electronics (CDE)	47 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	3.95 Ohm	—	0.512" (13.00 mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Same Performance Profile):

UFW1E470MDD and UKW1E470MDD from Nichicon are direct electrical equivalents to the 476SAK025M. Both maintain 47 µF capacitance, 25 V rating, ±20% tolerance, and 2000 hour lifetime at 85°C. However, both parts are classified as obsolete. UKW1E470MDD offers a height advantage at 0.433" compared to UFW1E470MDD at 0.492", making it preferable for space-constrained applications. Ripple current performance is equivalent or superior (115 mA @ 120 Hz versus 110 mA).

For Enhanced Reliability (Extended Lifetime):

EEU-EB1E470S from Panasonic Electronic Components provides the highest lifetime rating at 5000 hours @ 105°C, compared to the base specification of 2000 hours @ 85°C. This part is currently in active product status and offers superior long-term reliability. The operating temperature range extends to 105°C, providing thermal margin for demanding applications. Height is 0.472", slightly taller than the original part.

For Extended Temperature Range:

UPW1E470MDD from Nichicon and 517D476M025JA6AE3 from Vishay Sprague both extend the operating temperature range to -55°C ~ 105°C and provide 2000 hour lifetime at 105°C. These parts are suitable for applications requiring wider temperature operation. Both are obsolete products.

For Improved ESR Performance:

SK470M025ST from Cornell Dubilier Electronics (same manufacturer family as the primary part) delivers superior ESR at 3.95 Ohm compared to 5.644 Ohm of the 476SAK025M. This part is currently active and maintains identical electrical specifications. Height is 0.512", the tallest among all options.

EKZE250ELL470ME11D from Chemi-Con provides excellent ESR at 300 mOhms (0.3 Ohm), the lowest among all listed parts, with active product status and 2000 hour lifetime at 105°C.

Compliance Considerations:

All listed parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. All parts carry EAR99 ECCN classification and 8532.22.0020 HTSUS code.

Frequently Asked Questions (FAQ)

Q: Can I use a 35V rated capacitor in place of the 476SAK025M (25V rated)?

A: Yes. UFW1V470MDD and UKW1V470MDD are 47 µF, 35 V rated parts that are electrically compatible with 25 V circuit requirements. A higher voltage rating provides additional safety margin and does not degrade circuit performance. However, these parts are obsolete and taller (0.492" and 0.433" respectively), which may affect PCB layout.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain identical electrical specifications (capacitance, voltage, tolerance, lifetime, temperature range). Upgrade substitutes enhance one or more performance parameters—such as extended lifetime (5000 hours versus 2000 hours), wider temperature range (-55°C to 105°C versus -40°C to 85°C), or lower ESR—while maintaining core electrical compatibility.

Q: Does height variation affect substitutability?

A: Height variation does not affect electrical substitutability but impacts physical PCB layout and mechanical clearance. The 476SAK025M has a seated height of 0.413" (10.50 mm). Substitute parts range from 0.433" to 0.512". Verify available vertical clearance on the PCB before selecting a taller alternative.

Q: Why are some substitute parts listed as obsolete?

A: Obsolete parts are no longer manufactured but may remain available in distributor inventory. UFW1E470MDD, UKW1E470MDD, UPW1E470MDD, and 517D476M025JA6AE3 are obsolete but currently in stock (inventory quantities provided in source data). For new designs, prioritize active products: EEU-EB1E470S (Panasonic), EKZE250ELL470ME11D (Chemi-Con), or SK470M025ST (Cornell Dubilier).

Q: What does ESR (Equivalent Series Resistance) mean for capacitor selection?

A: ESR represents the internal resistance of the capacitor at a specified frequency. Lower ESR indicates better high-frequency performance and reduced heat generation under ripple current conditions. The 476SAK025M has 5.644 Ohm ESR @ 120 Hz. SK470M025ST (3.95 Ohm) and EKZE250ELL470ME11D (300 mOhms) offer superior ESR performance for applications sensitive to impedance characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental regulations for lead-free and restricted substance requirements.

Q: Can I mix different manufacturers' capacitors in the same circuit?

A: Yes. All listed parts meet identical electrical specifications (47 µF, 25 V, ±20% tolerance) and mechanical requirements (through-hole, radial can, 2.00 mm lead spacing, 5.00 mm diameter). Mixing manufacturers is acceptable from an electrical standpoint, though design consistency may be preferred for manufacturing and quality control purposes.

Q: Which substitute offers the best overall performance?

A: EEU-EB1E470S from Panasonic provides the highest lifetime rating (5000 hours @ 105°C) and is currently in active production status with the largest inventory (73,300 pieces). For applications prioritizing reliability and long-term availability, this is the recommended upgrade path.

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