SK470M350ST Equivalent & Substitute Parts Reference

Part Overview

The SK470M350ST is a 47 µF, 350 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is rated for general-purpose applications with an operating temperature range of -25°C to 85°C and a lifetime specification of 2000 hours at 85°C. The part is Active status and ROHS3 compliant.

Substitute parts are identified when equivalent capacitance, voltage rating, tolerance, and mechanical dimensions are maintained within acceptable engineering parameters. Alternative components may offer enhanced performance characteristics such as extended lifetime ratings, improved temperature operating ranges, or higher ripple current capabilities while maintaining form-factor compatibility.

Key Parameters

Parameter	Value	Unit
Capacitance	47	µF
Voltage Rating	350	V
Tolerance	±20%	—
ESR @ 120 Hz	5.65	Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C	—
Operating Temperature Range	-25°C to 85°C	—
Ripple Current @ 120 Hz	220	mA
Lead Spacing	7.50	mm
Diameter	16.00	mm
Height (Seated Max)	27.00	mm
Mounting Type	Through Hole	—
Package Type	Radial, Can	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 47 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 350 V minimum (equal or higher acceptable)
Package Type: Radial, Can (exact match required)
Lead Spacing: 7.50 mm (exact match required)
Diameter: 16.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: -25°C minimum lower bound
Polarization: Polar (exact match required)
RoHS Status: ROHS3 Compliant (preferred)

Substitute parts are grouped into two categories:

Direct Equivalents (Same Voltage Rating - 350 V): Parts maintaining the 350 V voltage specification with identical mechanical and electrical parameters.

Upgraded Substitutes (Higher Voltage Rating): Parts with voltage ratings of 400 V or 450 V, providing enhanced voltage margin while maintaining all other mechanical and capacitance specifications. These are suitable for applications where higher voltage headroom is beneficial.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ Temp	Operating Temp Range (°C)	Ripple Current @ 120 Hz (mA)	ESR @ 120 Hz (Ohm)	Height (mm)	RoHS Status
SK470M350ST	Cornell Dubilier	47	350	±20%	2000 Hrs @ 85°C	-25 to 85	220	5.65	27.00	ROHS3
EEU-EB2V470	Panasonic	47	350	±20%	5000 Hrs @ 105°C	-25 to 105	320	—	27.00	ROHS3
476CKE350M	Cornell Dubilier / Illinois Capacitor	47	350	±20%	2000 Hrs @ 105°C	-25 to 105	190	7.055	26.50	ROHS3
ECA-2VHG470	Panasonic	47	350	±20%	2000 Hrs @ 105°C	-25 to 105	230	—	27.00	ROHS3
EEU-EE2V470	Panasonic	47	350	±20%	10000 Hrs @ 105°C	-25 to 105	374.5	—	27.00	ROHS3
ESH476M450AM7AA	KEMET	47	450	±20%	2000 Hrs @ 105°C	-25 to 105	260	—	27.00	ROHS3
400BXC47MEFC16X25	Rubycon	47	400	±20%	12000 Hrs @ 105°C	-25 to 105	472	—	27.00	ROHS3
450BXW47MEFR16X25	Rubycon	47	450	±20%	12000 Hrs @ 105°C	-40 to 105	500	—	27.00	ROHS3
476CKE400MQV	Cornell Dubilier / Illinois Capacitor	47	400	±20%	2000 Hrs @ 105°C	-25 to 105	360	7.055	26.50	ROHS3
EEU-EE2G470	Panasonic	47	400	±20%	10000 Hrs @ 105°C	-25 to 105	413	—	27.00	ROHS3
EGXF401ELL470ML25S	Chemi-Con	47	400	±20%	3000 Hrs @ 125°C	-40 to 125	395.5	—	26.50	RoHS Compliant

Engineering Selection Recommendations

Direct Equivalent Selection (350 V Rating):

The EEU-EE2V470 (Panasonic) provides the highest lifetime rating among 350 V equivalents at 10,000 hours @ 105°C, with extended operating temperature range to 105°C and increased ripple current capacity (374.5 mA @ 120 Hz). This part maintains identical mechanical dimensions and ROHS3 compliance.

The EEU-EB2V470 (Panasonic) offers 5,000 hours @ 105°C lifetime with superior ripple current handling (320 mA @ 120 Hz) and extended temperature range, suitable for applications requiring improved thermal performance over the original specification.

The ECA-2VHG470 (Panasonic) carries AEC-Q200 automotive qualification and is suitable for automotive applications requiring 350 V rating with extended temperature operation to 105°C.

Upgraded Voltage Rating Selection (400 V - 450 V):

The 400BXC47MEFC16X25 (Rubycon) provides the longest lifetime specification at 12,000 hours @ 105°C with 400 V rating, offering significant voltage margin and extended operational life. Ripple current capacity is 472 mA @ 120 Hz.

The 450BXW47MEFR16X25 (Rubycon) extends the lower operating temperature limit to -40°C with 450 V rating and 12,000-hour lifetime @ 105°C, suitable for applications requiring enhanced cold-temperature performance and maximum voltage headroom.

The EGXF401ELL470ML25S (Chemi-Con) provides AEC-Q200 automotive qualification with extended upper temperature limit to 125°C and 400 V rating, designed for automotive applications with elevated thermal requirements.

All substitute parts maintain ROHS3 compliance and identical mechanical form factors (16 mm diameter, 7.50 mm lead spacing, through-hole mounting).

Frequently Asked Questions (FAQ)

Q: Can the SK470M350ST be replaced with a 400 V or 450 V rated substitute?

A: Yes. Higher voltage-rated capacitors are electrically compatible substitutes. A 400 V or 450 V capacitor will function correctly in a circuit designed for 350 V operation, providing additional voltage safety margin. All mechanical dimensions and capacitance values remain identical.

Q: What is the difference between direct equivalents and upgraded substitutes?

A: Direct equivalents maintain the 350 V voltage rating of the original part. Upgraded substitutes feature 400 V or 450 V ratings, offering higher voltage headroom. Both categories maintain identical capacitance (47 µF), tolerance (±20%), and mechanical form factor (16 mm diameter, 7.50 mm lead spacing).

Q: Are there differences in lifetime ratings among substitute parts?

A: Yes. The original SK470M350ST is rated for 2,000 hours @ 85°C. Substitute parts offer varying lifetime specifications ranging from 2,000 to 12,000 hours at higher temperatures (105°C or 125°C). Extended lifetime ratings indicate improved reliability under sustained thermal stress.

Q: Which substitute offers the best ripple current performance?

A: The 450BXW47MEFR16X25 (Rubycon) provides the highest ripple current capacity at 500 mA @ 120 Hz, followed by the 400BXC47MEFC16X25 at 472 mA @ 120 Hz. The original part is rated for 220 mA @ 120 Hz.

Q: Are all substitute parts RoHS compliant?

A: All listed substitutes are RoHS compliant. Most are ROHS3 certified. The EGXF401ELL470ML25S carries RoHS Compliant status. Compliance status is suitable for applications requiring environmental regulatory adherence.

Q: What is the significance of the operating temperature range difference?

A: The original SK470M350ST operates from -25°C to 85°C. Most substitutes extend the upper limit to 105°C, and some (450BXW47MEFR16X25, EGXF401ELL470ML25S) extend the lower limit to -40°C. Extended temperature ranges enable use in more demanding thermal environments.

Q: Do substitute parts have identical ESR (Equivalent Series Resistance) values?

A: No. The original part specifies 5.65 Ohm @ 120 Hz. Some substitutes (476CKE350M, 476CKE400MQV) provide ESR specifications (7.055 Ohm @ 120 Hz), while others do not publish ESR data. ESR differences may affect high-frequency performance in ripple-sensitive applications.

Q: Are automotive-qualified substitutes available?

A: Yes. The ECA-2VHG470 (Panasonic) and EGXF401ELL470ML25S (Chemi-Con) carry AEC-Q200 automotive qualification, suitable for automotive applications requiring certified component reliability.

Q: Can the SK470M350ST be used in applications requiring -40°C lower temperature operation?

A: No. The original part is rated only to -25°C. For applications requiring -40°C operation, use the 450BXW47MEFR16X25 or EGXF401ELL470ML25S, both rated to -40°C minimum.

Q: What is the inventory status of substitute parts?

A: All substitute parts listed are in active production status with new original stock available. Inventory quantities range from 937 to 7,563 pieces across different manufacturers and part numbers.

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