SEK4R7M200ST Equivalent & Substitute Parts

Part Overview

The SEK4R7M200ST is a 4.7 µF, 200 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is suitable for general-purpose applications requiring through-hole mounting. The part is ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Substitute parts are identified based on matching capacitance (4.7 µF), tolerance (±20%), and compatible mechanical dimensions while allowing for voltage rating upgrades or alternative manufacturer sources. Substitutes maintain the same polarization type, mounting configuration, and lead spacing specifications.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage - Rated	200 V
Tolerance	±20%
Polarization	Polar
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.138" (3.50mm)
Size / Dimension	0.315" Dia (8.00mm)
Height - Seated (Max)	0.433" (11.00mm)
Operating Temperature	-40°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution logic for the SEK4R7M200ST is based on the following criteria:

Primary Matching Parameters:

Capacitance: 4.7 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Allowable Variation Parameters:

Voltage - Rated: Equal to or greater than 200 V
Lead Spacing: 0.138" (3.50mm) preferred; 0.098" (2.50mm) acceptable with PCB layout verification
Size / Dimension: 0.315" Dia (8.00mm) preferred; 0.248" Dia (6.30mm) acceptable with mechanical clearance verification
Height - Seated: Variations acceptable within mechanical envelope constraints
Lifetime @ Temp.: Equal to or greater than 2000 Hrs @ 105°C
Operating Temperature: Range must encompass -40°C ~ 105°C minimum

Substitute Categories:

Category 1 - Direct Voltage Upgrade (Same Manufacturer): SEK4R7M250ST (250 V rated, CDE manufacturer)

Category 2 - Direct Equivalent (Alternative Manufacturer, Same Voltage): 200LLE4R7MEFC6.3X11 (200 V rated, Rubycon manufacturer)

Category 3 - Voltage Upgrade (Alternative Manufacturer): 250LEX4.7MEFC8X9 (250 V rated, Rubycon manufacturer) 400AX4.7MEFC8X9 (400 V rated, Rubycon manufacturer)

Parameter Comparison

Parameter	SEK4R7M200ST (Main)	SEK4R7M250ST	200LLE4R7MEFC6.3X11	250LEX4.7MEFC8X9	400AX4.7MEFC8X9
Manufacturer	CDE	CDE	Rubycon	Rubycon	Rubycon
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	200 V	250 V	200 V	250 V	400 V
Polarization	Polar	Polar	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.138" (3.50mm)	0.138" (3.50mm)	0.098" (2.50mm)	0.138" (3.50mm)	0.138" (3.50mm)
Size / Dimension	0.315" Dia (8.00mm)	0.315" Dia (8.00mm)	0.248" Dia (6.30mm)	0.315" Dia (8.00mm)	0.315" Dia (8.00mm)
Height - Seated (Max)	0.433" (11.00mm)	0.433" (11.00mm)	0.512" (13.00mm)	0.433" (11.00mm)	0.394" (10.00mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C	2000 Hrs @ 105°C	12000 Hrs @ 105°C	4000 Hrs @ 125°C	2000 Hrs @ 105°C
Product Status	Active	Active	Active	Not For New Designs	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SEK4R7M250ST (CDE Manufacturer)

This substitute is recommended as the primary alternative when voltage margin is required. It maintains identical mechanical dimensions (0.315" Dia, 0.433" height, 0.138" lead spacing) and identical lifetime rating (2000 Hrs @ 105°C). The 250 V rating provides 25% voltage headroom above the original 200 V specification. Product status is Active, ensuring continued availability and support. ROHS3 compliance and REACH unaffected status match the original part.

200LLE4R7MEFC6.3X11 (Rubycon Manufacturer)

This substitute provides equivalent voltage rating (200 V) with significantly extended lifetime (12000 Hrs @ 105°C versus 2000 Hrs). Lead spacing is reduced to 0.098" (2.50mm) and diameter is reduced to 0.248" (6.30mm), requiring PCB layout verification for compatibility. Height increases to 0.512" (13.00mm), necessitating mechanical clearance verification. Product status is Active. This option is suitable for applications where extended operational life is prioritized and mechanical constraints permit the dimensional changes.

250LEX4.7MEFC8X9 (Rubycon Manufacturer)

This substitute offers 250 V rating with extended operating temperature range (-40°C ~ 125°C). Mechanical dimensions match the original part exactly (0.315" Dia, 0.433" height, 0.138" lead spacing). Lifetime rating is 4000 Hrs @ 125°C. Product status is Not For New Designs, indicating this part is in mature phase with limited future availability. Selection of this part is not recommended for new circuit designs.

400AX4.7MEFC8X9 (Rubycon Manufacturer)

This substitute provides maximum voltage rating (400 V) with identical mechanical dimensions (0.315" Dia, 0.138" lead spacing). Height is reduced to 0.394" (10.00mm), providing improved mechanical fit. Lifetime rating is 2000 Hrs @ 105°C. Product status is Not For New Designs, indicating this part is in mature phase. Selection of this part is not recommended for new circuit designs.

Frequently Asked Questions (FAQ)

Q: Can SEK4R7M250ST be used as a direct replacement for SEK4R7M200ST?

A: Yes. SEK4R7M250ST is a direct mechanical and electrical substitute with identical lead spacing (0.138"), diameter (0.315"), height (0.433"), and lifetime rating (2000 Hrs @ 105°C). The 250 V rating is compatible with circuits designed for 200 V operation, providing additional voltage margin. No PCB layout modifications are required.

Q: What are the mechanical constraints when using 200LLE4R7MEFC6.3X11?

A: The 200LLE4R7MEFC6.3X11 has reduced lead spacing (0.098" versus 0.138") and smaller diameter (0.248" versus 0.315"), but increased height (0.512" versus 0.433"). PCB footprint must accommodate the narrower lead spacing. Mechanical clearance above the capacitor must accommodate the additional 0.079" height. Verify these dimensions against your PCB layout and enclosure constraints before selection.

Q: Why are 250LEX4.7MEFC8X9 and 400AX4.7MEFC8X9 marked "Not For New Designs"?

A: Parts marked "Not For New Designs" are in mature production phase with limited future availability and support. These parts should not be selected for new circuit designs. Use Active status parts (SEK4R7M250ST or 200LLE4R7MEFC6.3X11) for new designs to ensure long-term supply chain stability.

Q: What is the difference in lifetime between these substitutes?

A: SEK4R7M200ST and SEK4R7M250ST both provide 2000 Hrs @ 105°C. The 200LLE4R7MEFC6.3X11 provides extended lifetime of 12000 Hrs @ 105°C, suitable for applications requiring higher reliability. The 250LEX4.7MEFC8X9 provides 4000 Hrs @ 125°C, reflecting operation at elevated temperature.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitutes are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements equivalent to the original SEK4R7M200ST.

Q: Can I use a higher voltage rated capacitor in place of the 200 V original?

A: Yes. Aluminum electrolytic capacitors rated for higher voltages are electrically compatible with circuits designed for lower voltages. A 250 V or 400 V rated capacitor will function correctly in a 200 V circuit. Higher voltage ratings do not negatively affect circuit performance and provide additional safety margin.

Q: What is the ripple current specification for substitute parts?

A: The original SEK4R7M200ST specifies 50 mA @ 120 Hz and 80 mA @ 10 kHz. The 200LLE4R7MEFC6.3X11 specifies 49 mA @ 120 Hz and 98 mA @ 100 kHz. The 250LEX4.7MEFC8X9 specifies 53 mA @ 120 Hz and 106 mA @ 100 kHz. Verify ripple current specifications against your circuit requirements before final selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message