SEK470M010ST Equivalent & Substitute Parts Reference

Part Overview

The SEK470M010ST is a 47 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active status and is designed for general-purpose applications requiring polarized capacitive energy storage and filtering.

The SEK470M010ST has been in continuous production; however, equivalent and substitute parts from alternative manufacturers are available for procurement flexibility, design redundancy, and supply chain optimization. This reference provides direct equivalents and upgraded voltage-rated alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Capacitance	47	µF	Must match exactly
Voltage - Rated	10	V	Minimum requirement; higher voltage ratings acceptable
Tolerance	±20%	%	Must match or be tighter
Lifetime @ Temperature	2000	Hrs @ 105°C	Must meet or exceed
Operating Temperature Range	-55°C ~ 105°C	°C	Must encompass application requirements
Polarization	Polar	—	Must match
Mounting Type	Through Hole	—	Must match
Package / Case	Radial, Can	—	Must match
Lead Spacing	0.079" (2.00mm)	inches (mm)	Must match for PCB compatibility
Size / Dimension	0.197" Dia (5.00mm)	inches (mm)	Must match for mechanical fit
Height - Seated (Max)	0.512"	inches	Physical clearance constraint
RoHS Status	ROHS3 Compliant	—	Regulatory requirement

Substitute Part Grouping Explanation

Substitute parts for the SEK470M010ST are classified into two categories based on electrical compatibility:

Direct Equivalents (Same Voltage Rating - 10V):

UPS1A470MDD (Nichicon)
UPW1A470MDD (Nichicon)

These parts maintain identical capacitance (47 µF), voltage rating (10 V), tolerance (±20%), and thermal lifetime (2000 Hrs @ 105°C). All three parts share the same lead spacing (0.079" / 2.00mm), radial can package, and through-hole mounting configuration. Direct equivalents are suitable for one-to-one replacement in existing designs without circuit modification.

Upgraded Alternatives (Higher Voltage Rating - 25V):

517D476M025JA6AE3 (Vishay Sprague)
UPW1E470MDD (Nichicon)

These parts maintain identical capacitance (47 µF), tolerance (±20%), and thermal lifetime (2000 Hrs @ 105°C), but feature a rated voltage of 25 V instead of 10 V. The higher voltage rating provides additional safety margin and component longevity in applications subject to voltage transients or design margin requirements. Physical dimensions, lead spacing, and mounting type remain compatible with the original SEK470M010ST footprint.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the main part.

Parameter Comparison

Parameter	SEK470M010ST (CDE)	UPS1A470MDD (Nichicon)	UPW1A470MDD (Nichicon)	517D476M025JA6AE3 (Vishay)	UPW1E470MDD (Nichicon)
Capacitance	47 µF	47 µF	47 µF	47 µF	47 µF
Voltage - Rated	10 V	10 V	10 V	25 V	25 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lifetime @ Temp.	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar	Polar
Lead Spacing	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Size / Dimension	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)
Height - Seated (Max)	0.512" (13.00mm)	0.433" (11.00mm)	0.433" (11.00mm)	0.433" (11.00mm)	0.433" (11.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Obsolete	Obsolete	Obsolete	Obsolete

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating):

Select UPS1A470MDD or UPW1A470MDD when the application circuit is designed for 10 V rated capacitors and no voltage margin enhancement is required. Both Nichicon alternatives are ROHS3 compliant and maintain the same thermal lifetime specification. Note that UPS1A470MDD and UPW1A470MDD are classified as Obsolete; however, inventory availability is confirmed at 4305 Pcs and 5782 Pcs respectively. The SEK470M010ST remains the only Active-status option in the 10 V rating category.

For Upgraded Voltage Rating (Higher Reliability Margin):

Select 517D476M025JA6AE3 (Vishay Sprague) or UPW1E470MDD (Nichicon) when the application permits a 25 V rated capacitor. The 25 V rating provides additional voltage safety margin and extended component life under transient conditions. UPW1E470MDD offers the highest inventory availability at 35033 Pcs. Both 25 V alternatives are ROHS3 compliant and maintain the 2000 Hrs @ 105°C thermal lifetime.

Physical Compatibility Note:

All substitute parts feature a maximum seated height of 0.433" (11.00mm), which is 0.079" (2.00mm) shorter than the SEK470M010ST at 0.512" (13.00mm). This dimensional difference does not affect PCB footprint compatibility but may provide additional clearance in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can UPW1A470MDD or UPS1A470MDD be used as direct replacements for SEK470M010ST?

A: Yes. Both Nichicon parts maintain identical capacitance (47 µF), voltage rating (10 V), tolerance (±20%), thermal lifetime (2000 Hrs @ 105°C), lead spacing (0.079" / 2.00mm), and radial can package. PCB footprint and circuit function remain unchanged. Both parts are ROHS3 compliant.

Q: What is the difference between the 10 V and 25 V rated alternatives?

A: The 10 V alternatives (UPS1A470MDD, UPW1A470MDD) match the original voltage rating and are suitable for circuits designed with 10 V capacitors. The 25 V alternatives (517D476M025JA6AE3, UPW1E470MDD) provide higher voltage rating and are suitable for applications requiring additional voltage safety margin or where circuit voltage may exceed 10 V under transient conditions. All other electrical and thermal parameters remain equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—UPS1A470MDD, UPW1A470MDD, 517D476M025JA6AE3, and UPW1E470MDD—are ROHS3 compliant and REACH unaffected, matching the regulatory status of the SEK470M010ST.

Q: Why are some substitute parts marked as Obsolete?

A: Product status reflects manufacturer production status at the time of data collection. Obsolete designation does not indicate unavailability; confirmed inventory quantities are provided for each part. The SEK470M010ST remains the only Active-status option. Obsolete parts may have limited future availability and should be evaluated against long-term supply requirements.

Q: Does the height difference affect PCB compatibility?

A: No. All substitute parts maintain the same lead spacing (0.079" / 2.00mm) and radial can diameter (0.197" / 5.00mm). The substitute parts are shorter (0.433" / 11.00mm) than the SEK470M010ST (0.512" / 13.00mm), which provides additional clearance but does not affect footprint compatibility or mounting.

Q: Can 25 V rated capacitors be used in circuits designed for 10 V capacitors?

A: Yes. A higher voltage-rated capacitor can be used in a circuit designed for a lower voltage rating. The 25 V alternatives provide additional voltage safety margin and are electrically compatible with 10 V circuit designs. No circuit modification is required.

Q: What are the key parameters that determine substitution compatibility?

A: Capacitance value (47 µF), tolerance (±20%), thermal lifetime (2000 Hrs @ 105°C), operating temperature range (-55°C ~ 105°C), polarization (Polar), lead spacing (0.079" / 2.00mm), package type (Radial, Can), and mounting type (Through Hole) must match or be compatible. Voltage rating must meet or exceed the application requirement. All substitute parts satisfy these criteria.

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