ESMM401VSN101MP25S Equivalent & Substitute Parts

Part Overview

The ESMM401VSN101MP25S is a 100 µF, 400 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMM series. This radial, can-style snap-in component is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 1086 units in stock.

Equivalent and substitute parts are necessary when the original component becomes unavailable, when design requirements demand improved performance characteristics such as extended lifetime or lower equivalent series resistance, or when alternative manufacturers' components meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Capacitance	100	µF
Voltage - Rated	400	V
Tolerance	±20%	-
Operating Temperature Range	-25°C ~ 85°C	-
Lifetime @ Temperature	3000 Hrs @ 85°C	-
ESR @ 120Hz	3.315	Ohm
Lead Spacing	0.394" (10.00mm)	-
Size / Dimension	0.866" Dia (22.00mm)	-
Height - Seated (Max)	1.063" (27.00mm)	-
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
RoHS Status	RoHS Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the ESMM401VSN101MP25S is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 100 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 400 V minimum (equal or higher voltage acceptable)
Package / Case: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00mm) (exact match required)
Size / Dimension: 0.866" Dia (22.00mm) (exact match required)
Height - Seated (Max): 1.063" (27.00mm) or compatible (exact match or within tolerance required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Secondary Performance Considerations:

Operating Temperature Range: -25°C minimum to 85°C maximum (equal or wider range acceptable)
Lifetime @ Temperature: 3000 Hrs @ 85°C minimum (equal or longer acceptable)
ESR: 3.315 Ohm @ 120Hz (lower values indicate improved performance)
RoHS Compliance: Required for new designs

Substitute parts are grouped into three categories: Upgrade parts (improved performance characteristics), Direct equivalents (same performance tier), and Cross-manufacturer alternatives (different manufacturers meeting identical specifications).

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ Frequency	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Height (Max)	Product Status
ESMM401VSN101MP25S	Chemi-Con	100	400	±20%	3.315 Ohm @ 120Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
ELXQ401VSN101MP25S	Chemi-Con	100	400	±20%	Not Specified	5000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
ELHS451VSN101MP25S	Chemi-Con	100	450	±20%	Not Specified	5000 Hrs @ 105°C	-40°C ~ 105°C	0.394" (10.00mm)	1.083" (27.50mm)	Active
B43508A9107M000	EPCOS - TDK Electronics	100	400	±20%	1.23 Ohm @ 100Hz	3000 Hrs @ 105°C	-40°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Not For New Designs
B43508A9107M002	EPCOS - TDK Electronics	100	400	±20%	1.23 Ohm @ 100Hz	3000 Hrs @ 105°C	-40°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
B43644A9107M000	EPCOS - TDK Electronics	100	400	±20%	870 mOhm @ 100Hz	5000 Hrs @ 105°C	-40°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
450VXH100MEFCSN22X25	Rubycon	100	450	±20%	Not Specified	5000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
LGN2G101MELZ25	Nichicon	100	400	±20%	Not Specified	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active
LGNW6101MELZ25	Nichicon	100	420	±20%	Not Specified	3000 Hrs @ 105°C	-25°C ~ 105°C	0.394" (10.00mm)	1.063" (27.00mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Same Performance Tier):

B43508A9107M002 (EPCOS - TDK Electronics) is the primary direct equivalent. This part matches all critical mechanical and electrical parameters of the ESMM401VSN101MP25S, including 100 µF capacitance, 400 V rating, ±20% tolerance, and through-hole snap-in package with 10.00mm lead spacing. The B43508A9107M002 is Active in production status and ROHS3 compliant, making it suitable for new designs. The lower ESR of 1.23 Ohm @ 100Hz compared to the original 3.315 Ohm @ 120Hz represents improved performance characteristics.

For Enhanced Performance (Upgrade Options):

B43644A9107M000 (EPCOS - TDK Electronics) provides extended lifetime of 5000 Hrs @ 105°C versus the original 3000 Hrs @ 85°C, with significantly reduced ESR of 870 mOhm @ 100Hz. This part maintains identical mechanical dimensions and 400 V rating. It is Active in production and ROHS3 compliant.

ELXQ401VSN101MP25S (Chemi-Con) offers extended lifetime of 5000 Hrs @ 105°C with expanded operating temperature range to -25°C ~ 105°C. This part maintains the same manufacturer as the original component, identical mechanical dimensions, and 400 V rating. It is Active in production and RoHS compliant.

For Higher Voltage Applications:

ELHS451VSN101MP25S (Chemi-Con) and 450VXH100MEFCSN22X25 (Rubycon) both provide 450 V rating with 5000 Hrs @ 105°C lifetime. These parts are suitable when higher voltage margin is required. Note that ELHS451VSN101MP25S has a maximum seated height of 1.083" (27.50mm), which is 0.020" taller than the original specification.

For Cross-Manufacturer Alternatives:

LGN2G101MELZ25 (Nichicon) matches all critical parameters at 400 V with 3000 Hrs @ 105°C lifetime and expanded operating temperature range. LGNW6101MELZ25 (Nichicon) provides 420 V rating with similar performance characteristics.

Parts to Avoid for New Designs:

B43508A9107M000 (EPCOS - TDK Electronics) carries "Not For New Designs" status and should not be selected for new applications despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 450 V rated capacitor in place of the 400 V original?

A: Yes. Higher voltage-rated capacitors are electrically compatible with lower voltage applications. ELHS451VSN101MP25S and 450VXH100MEFCSN22X25 both provide 450 V rating and can substitute for the 400 V original. Verify that the physical height of 1.083" (27.50mm) for ELHS451VSN101MP25S accommodates your PCB layout, as it is 0.020" taller than the original 1.063" specification.

Q: What is the significance of ESR (Equivalent Series Resistance)?

A: ESR affects capacitor performance in ripple current applications and heat generation. Lower ESR values indicate better performance. The original ESMM401VSN101MP25S has 3.315 Ohm @ 120Hz. Substitute options B43508A9107M002 (1.23 Ohm @ 100Hz) and B43644A9107M000 (870 mOhm @ 100Hz) provide lower ESR, resulting in reduced heat generation and improved ripple current handling.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are either RoHS Compliant or ROHS3 Compliant. The original ESMM401VSN101MP25S is RoHS Compliant. All options meet current RoHS requirements for new designs.

Q: Can I use a substitute with a different operating temperature range?

A: Yes, provided the substitute's operating temperature range encompasses your application requirements. The original operates from -25°C ~ 85°C. Substitutes with wider ranges such as -40°C ~ 105°C (B43508A9107M002, B43644A9107M000) or -25°C ~ 105°C (ELXQ401VSN101MP25S, LGN2G101MELZ25) provide greater thermal margin and are compatible.

Q: What does "Lifetime @ Temperature" mean?

A: This specification indicates the expected operational life of the capacitor at a specified temperature. The original part is rated for 3000 Hrs @ 85°C. Upgrade options such as ELXQ401VSN101MP25S and B43644A9107M000 provide 5000 Hrs @ 105°C, indicating longer service life at higher temperatures.

Q: Are the mechanical dimensions identical across all substitute parts?

A: Nearly all substitutes maintain the original dimensions of 0.866" Dia (22.00mm) with 10.00mm lead spacing and 1.063" (27.00mm) maximum seated height. The exception is ELHS451VSN101MP25S, which has a maximum seated height of 1.083" (27.50mm). Verify PCB layout clearance before selecting this part.

Q: Why is B43508A9107M000 marked "Not For New Designs"?

A: This designation indicates that while the part remains available, the manufacturer recommends using newer alternatives for new product development. B43508A9107M002 is the active production equivalent from the same manufacturer and should be selected instead.

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

A: Yes. All listed substitutes meet identical electrical specifications (100 µF, 400 V or higher, ±20% tolerance) and mechanical requirements (radial snap-in package, 10.00mm lead spacing). Different manufacturers can be used in the same application provided all electrical and mechanical parameters are verified.

Q: What is the difference between Chemi-Con SMM, LXQ, and LHS series?

A: These are different product series from Chemi-Con with varying performance characteristics. SMM (original) provides 3000 Hrs @ 85°C. LXQ provides 5000 Hrs @ 105°C at 400 V. LHS provides 5000 Hrs @ 105°C at 450 V. All maintain identical mechanical packaging and lead spacing.

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