ESU106M350AH4AA Equivalent & Substitute Parts

Part Overview

The ESU106M350AH4AA is a 10 µF, 350 V aluminum electrolytic capacitor in radial, can package manufactured by KEMET. This component is rated for 10,000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 863 units in stock.

Equivalent and substitute parts are necessary when the primary component becomes unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended operational lifetime, or when alternative manufacturers' components offer superior specifications within the same physical and electrical envelope.

Key Parameters

Parameter	Value	Unit
Capacitance	10	µF
Tolerance	±20%	—
Voltage - Rated	350	V
Lifetime @ Temperature	10,000	Hrs @ 105°C
Operating Temperature Range	-25 to 105	°C
Lead Spacing	0.197 (5.00)	in (mm)
Size / Dimension	0.394 Dia (10.00)	in (mm)
Height - Seated (Max)	0.866 (22.00)	in (mm)
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
Polarization	Polar	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ESU106M350AH4AA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Capacitance: 10 µF (exact match required)
Tolerance: ±20% (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Size / Dimension: 0.394" Dia (10.00 mm) (exact match required)
Polarization: Polar (exact match required)

Parameters Allowing Variation:

Voltage - Rated: May be equal to or greater than 350 V
Lifetime @ Temperature: May be equal to or greater than 10,000 Hrs @ 105°C
Operating Temperature Range: May be equal to or extend beyond -25°C to 105°C
Ripple Current: May be equal to or greater than specified values

Substitute parts must maintain identical physical footprint and electrical polarity while permitting enhanced voltage ratings and extended operational lifetime. All substitute parts must comply with RoHS3 and maintain EAR99 ECCN classification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Lead Spacing (mm)	Size Dia (mm)	Height (mm)	Product Status
ESU106M350AH4AA	KEMET	10	350	±20%	10,000	-25 to 105	5.00	10.00	22.00	Active
B43890A4106M000	EPCOS - TDK Electronics	10	350	±20%	12,000	-25 to 105	5.00	10.00	22.00	Active
400BXC10MEFC10X20	Rubycon	10	400	±20%	10,000	-25 to 105	5.00	10.00	22.00	Active
450BXC10MEFC10X20	Rubycon	10	450	±20%	10,000	-25 to 105	5.00	10.00	22.00	Active
B43890A9106M000	EPCOS - TDK Electronics	10	400	±20%	12,000	-25 to 105	5.00	10.00	22.00	Active
EKXF451ELL100MJ20S	Chemi-Con	10	450	±20%	20,000	-40 to 105	5.00	10.00	21.50	Active
UCY2W100MPD	Nichicon	10	450	±20%	12,000	-40 to 105	5.00	10.00	21.50	Active
UCYW6100MPD	Nichicon	10	420	±20%	12,000	-40 to 105	5.00	10.00	21.50	Active
UCA2G100MPD	Nichicon	10	400	±20%	10,000	-25 to 105	5.00	10.00	21.50	Obsolete

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating):

B43890A4106M000 (EPCOS - TDK Electronics) is a direct equivalent at 350 V with identical electrical specifications. This part offers extended lifetime of 12,000 hours at 105°C compared to the 10,000-hour rating of the ESU106M350AH4AA. Both parts are active in production and RoHS3 compliant. Selection of this part introduces no design risk and provides enhanced reliability margin.

Voltage-Upgraded Substitutes (Higher Voltage Rating):

Parts with voltage ratings exceeding 350 V are suitable substitutes when the application circuit permits higher voltage components. These include:

400BXC10MEFC10X20 (Rubycon, 400 V, 10,000 Hrs @ 105°C) - Active status
B43890A9106M000 (EPCOS - TDK Electronics, 400 V, 12,000 Hrs @ 105°C) - Active status
UCA2G100MPD (Nichicon, 400 V, 10,000 Hrs @ 105°C) - Obsolete status
UCYW6100MPD (Nichicon, 420 V, 12,000 Hrs @ 105°C) - Active status
UCY2W100MPD (Nichicon, 450 V, 12,000 Hrs @ 105°C) - Active status
450BXC10MEFC10X20 (Rubycon, 450 V, 10,000 Hrs @ 105°C) - Active status
EKXF451ELL100MJ20S (Chemi-Con, 450 V, 20,000 Hrs @ 105°C) - Active status

All voltage-upgraded substitutes maintain the required 10 µF capacitance, ±20% tolerance, through-hole radial can package, 5.00 mm lead spacing, and 10.00 mm diameter. All are RoHS3 compliant and EAR99 classified.

Obsolete Parts:

UCA2G100MPD carries obsolete product status and should not be selected for new designs or long-term production applications.

Height Variation Consideration:

EKXF451ELL100MJ20S, UCY2W100MPD, UCYW6100MPD, and UCA2G100MPD have a maximum seated height of 21.50 mm compared to the 22.00 mm of the ESU106M350AH4AA. This 0.50 mm reduction in height is within typical PCB layout tolerances for through-hole components but must be verified against specific board design constraints.

Temperature Range Extension:

EKXF451ELL100MJ20S, UCY2W100MPD, and UCYW6100MPD extend the lower operating temperature limit to -40°C, compared to -25°C for the ESU106M350AH4AA. This enhancement is beneficial for applications requiring extended cold-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ESU106M350AH4AA with a higher voltage-rated capacitor?

A: Yes. Capacitors with voltage ratings of 400 V, 420 V, or 450 V are electrically compatible substitutes provided all other parameters remain identical: 10 µF capacitance, ±20% tolerance, through-hole radial can package, 5.00 mm lead spacing, and 10.00 mm diameter. Higher voltage ratings do not degrade circuit performance in applications designed for 350 V operation.

Q: What is the difference between the KEMET ESU106M350AH4AA and the EPCOS B43890A4106M000?

A: Both parts are 10 µF, 350 V, ±20% tolerance, through-hole radial can capacitors with identical physical dimensions. The primary difference is the operational lifetime: the B43890A4106M000 is rated for 12,000 hours at 105°C compared to 10,000 hours for the ESU106M350AH4AA. Both are active in production and RoHS3 compliant.

Q: Are there any physical compatibility issues when substituting with Nichicon UCY series parts?

A: Nichicon UCY series parts (UCY2W100MPD and UCYW6100MPD) have a maximum seated height of 21.50 mm compared to 22.00 mm for the ESU106M350AH4AA. This 0.50 mm reduction must be evaluated against specific PCB layout and mechanical clearance requirements. Lead spacing and diameter remain identical at 5.00 mm and 10.00 mm respectively.

Q: Which substitute offers the longest operational lifetime?

A: The EKXF451ELL100MJ20S (Chemi-Con) offers 20,000 hours at 105°C, the highest lifetime rating among all substitutes. This part also extends the lower operating temperature to -40°C and maintains all other critical parameters.

Q: Should I use the UCA2G100MPD as a substitute?

A: No. The UCA2G100MPD carries obsolete product status and should not be selected for new designs or applications requiring long-term component availability.

Q: What is the impact of selecting a 450 V substitute in a 350 V circuit?

A: Selecting a 450 V capacitor in a circuit designed for 350 V operation introduces no electrical risk. The higher voltage rating provides additional safety margin and does not affect circuit performance. Physical dimensions and electrical characteristics remain compatible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and maintain EAR99 ECCN classification, consistent with the ESU106M350AH4AA.

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

A: Yes. All substitute parts maintain identical capacitance, tolerance, voltage rating (or higher), through-hole radial can package, lead spacing, and diameter. Mixing manufacturers' components is electrically and mechanically compatible provided the specific voltage and lifetime requirements of the application are met by each selected part.

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