476CKS100M Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 476CKS100M is a 47 µF, 100 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the CKS series. This radial, through-hole component is rated for general-purpose applications with a 2000-hour lifetime at 85°C and an operating temperature range of -40°C to 85°C. The part is currently active in production and ROHS3 compliant.

Substitute parts become necessary when the original 476CKS100M reaches end-of-life status, inventory depletion, or when design requirements demand enhanced performance characteristics such as extended lifetime ratings, improved temperature stability, or reduced equivalent series resistance (ESR).

Key Parameters

Parameter	476CKS100M	Unit
Capacitance	47	µF
Voltage Rating	100	V
Tolerance	±20%	-
ESR @ 120 Hz	2.258	Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C	-
Operating Temperature Range	-40°C ~ 85°C	-
Ripple Current @ 120 Hz	260	mA
Ripple Current @ 100 kHz	598	mA
Lead Spacing	0.197" (5.00 mm)	-
Case Diameter	0.394" (10.00 mm)	-
Height (Seated Max)	0.551" (14.00 mm)	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
RoHS Status	ROHS3 Compliant	-
REACH Status	REACH Unaffected	-

Substitute Part Grouping Explanation

Substitution of the 476CKS100M is determined by strict equivalence in the following critical parameters:

Mandatory Equivalence Parameters:

Capacitance: 47 µF (exact match required)
Voltage Rating: 100 V (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)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.394" (10.00 mm) (exact match required)
Height (Seated Max): 0.551" (14.00 mm) (exact match required)

Performance Parameters (Allowable Variation):

ESR: May vary; lower values indicate improved performance
Lifetime @ Temperature: May exceed original specification; higher values indicate extended reliability
Operating Temperature Range: May extend beyond original range; wider ranges provide greater flexibility
Ripple Current Ratings: May exceed original specification; higher values indicate improved current handling

All substitute parts listed maintain identical physical dimensions, electrical ratings, and compliance certifications (ROHS3, REACH Unaffected, EAR99, HTSUS 8532.22.0020) to ensure direct mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ 120 Hz (Ohm)	Lifetime @ Temp	Operating Temp (°C)	Ripple @ 120 Hz (mA)	Ripple @ 100 kHz (mA)	Status
476CKS100M	Cornell Dubilier	CKS	47	100	±20%	2.258	2000 Hrs @ 85°C	-40 ~ 85	260	598	Active
476CKE100M	Cornell Dubilier	CKE	47	100	±20%	2.822	2000 Hrs @ 105°C	-40 ~ 105	280	644	Active
476KBM100MGU	Cornell Dubilier	KBM	47	100	±20%	2.823	7000 Hrs @ 105°C	-40 ~ 105	160	400	Active
100YXG47MEFC10X12.5	Rubycon	YXG	47	100	±20%	—	5000 Hrs @ 105°C	-40 ~ 105	144	288	Not For New Designs
100YXH47MEFC10X12.5	Rubycon	YXH	47	100	±20%	—	7000 Hrs @ 105°C	-40 ~ 105	162.5	325	Obsolete
100ZL47MEFC10X12.5	Rubycon	ZL	47	100	±20%	—	4000 Hrs @ 105°C	-40 ~ 105	180	450	Obsolete
ECA-2AHG470	Panasonic	NHG-A	47	100	±20%	—	2000 Hrs @ 105°C	-55 ~ 105	165	247.5	Active
EKY-101ELL470MJC5S	Chemi-Con	KY	47	100	±20%	—	7000 Hrs @ 105°C	-40 ~ 105	192	480	Active
ESH476M100AH9AA	KEMET	ESH	47	100	±20%	—	2000 Hrs @ 105°C	-40 ~ 105	185	277.5	Active
ESL476M100AH9AA	KEMET	ESL	47	100	±20%	0.320	10000 Hrs @ 105°C	-40 ~ 105	255	510	Active
ESY476M100AH1AA	KEMET	ESY	47	100	±20%	0.240	4000 Hrs @ 105°C	-40 ~ 105	—	—	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Substitution (Active Status):

The 476CKE100M (Cornell Dubilier, CKE series) is the preferred direct substitute. It maintains identical physical dimensions and electrical ratings while offering extended operating temperature range (-40°C to 105°C versus -40°C to 85°C) and improved ripple current handling at both low and high frequencies. Product status is Active, ensuring long-term availability and supply chain stability.

Extended Lifetime Applications:

For applications requiring extended operational life, the ESL476M100AH9AA (KEMET, ESL series) provides 10,000-hour lifetime at 105°C with the lowest ESR specification (0.320 Ohm @ 100 kHz). This part is Active and ROHS3 compliant, suitable for critical reliability requirements.

High-Temperature Stability:

The ECA-2AHG470 (Panasonic, NHG-A series) extends the lower operating temperature limit to -55°C, providing enhanced thermal range for extreme environment applications. Lifetime rating of 2000 hours at 105°C with Active product status.

Reduced ESR Performance:

The ESY476M100AH1AA (KEMET, ESY series) delivers the lowest ESR at 0.240 Ohm @ 100 kHz, optimizing performance in high-frequency ripple current applications. Active product status with 4000-hour lifetime at 105°C.

Obsolete Part Avoidance:

The Rubycon YXH (100YXH47MEFC10X12.5) and ZL (100ZL47MEFC10X12.5) series are marked Obsolete. The YXG series (100YXG47MEFC10X12.5) is marked Not For New Designs. These parts should not be selected for new designs or long-term production requirements.

All recommended substitutes maintain ROHS3 compliance, REACH Unaffected status, and identical mechanical packaging (radial, through-hole, 5.00 mm lead spacing, 10.00 mm diameter, 14.00 mm height).

Frequently Asked Questions (FAQ)

Q: Can I substitute 476CKS100M with any 47 µF, 100 V capacitor?

A: No. Substitution requires exact equivalence in capacitance, voltage rating, tolerance, polarization, mounting type, package style, and physical dimensions (lead spacing, case diameter, and height). Only parts meeting all these criteria are electrically and mechanically compatible.

Q: What is the difference between the 476CKE100M and 476CKS100M?

A: Both are Cornell Dubilier radial aluminum electrolytic capacitors with identical electrical ratings (47 µF, 100 V, ±20%). The 476CKE100M operates to 105°C (versus 85°C for CKS), has a 2000-hour lifetime at 105°C (versus 85°C for CKS), and provides higher ripple current ratings. Physical dimensions are identical.

Q: Why do some substitute parts have no ESR specification listed?

A: ESR data was not provided in the input parameters for certain manufacturers' parts. ESR values that are provided indicate measured performance at specified frequencies. Absence of ESR data does not indicate inferior performance; it reflects data availability in the source documentation.

Q: Is the ESL476M100AH9AA suitable for my application if I need maximum lifetime?

A: The ESL476M100AH9AA provides 10,000-hour lifetime at 105°C, the highest rating among all listed substitutes. It is Active in production status and ROHS3 compliant. Selection depends on whether your application requires this extended lifetime and whether the ESR specification (0.320 Ohm @ 100 kHz) meets your ripple current filtering requirements.

Q: Can I use the Rubycon YXG or YXH series as substitutes?

A: The YXG series is marked "Not For New Designs" and the YXH series is marked "Obsolete." These designations indicate discontinued or restricted production status. For new designs and long-term production, select only Active-status parts: 476CKE100M, 476KBM100MGU, ECA-2AHG470, EKY-101ELL470MJC5S, ESH476M100AH9AA, ESL476M100AH9AA, or ESY476M100AH1AA.

Q: Do all substitute parts have identical physical dimensions?

A: Yes. All listed substitute parts maintain the same radial, through-hole package with 0.197" (5.00 mm) lead spacing, 0.394" (10.00 mm) case diameter, and 0.551" (14.00 mm) maximum seated height. This ensures direct mechanical compatibility in existing PCB layouts.

Q: What does ROHS3 compliance mean for my application?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and certain flame retardants. All listed substitutes are ROHS3 compliant and REACH Unaffected, meeting environmental and regulatory standards for industrial and consumer applications.

Q: Which substitute offers the best performance for high-frequency ripple current filtering?

A: The 476CKS100M original part provides 598 mA ripple current at 100 kHz. Among substitutes, the 476CKE100M (644 mA) and ESL476M100AH9AA (510 mA) offer comparable or enhanced high-frequency ripple current handling. Selection depends on your specific frequency and current requirements.

Q: Are there any temperature-related limitations I should consider?

A: The original 476CKS100M operates from -40°C to 85°C. Most substitutes extend the upper limit to 105°C. The ECA-2AHG470 extends the lower limit to -55°C. Verify your application's temperature requirements and select accordingly. Extended temperature ranges provide greater design flexibility but may not be necessary for all applications.

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