KMG100VB331M16X25LL Equivalent & Substitute Parts

Part Overview

The KMG100VB331M16X25LL is a 330 µF, 100 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMG series. This radial, through-hole component is rated for general-purpose applications with a 1000-hour lifetime at 105°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with enhanced or modified characteristics suitable for the same application space.

Substiute Parts

KMG100VB331M16X25LL

Chemi-ConIn Stock: 1235KMG100VB331M16X25LL Datasheet

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EKMG101ELL331ML25S

Chemi-ConIn Stock: 1279EKMG101ELL331ML25S Datasheet

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UPW2A331MHD

NichiconIn Stock: 16443UPW2A331MHD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KMG100VB331M16X25LL is determined by strict equivalence in the following critical parameters:

Mandatory Equivalence Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -55°C to 105°C (exact match required)
• Mounting Type: Through Hole, Radial (exact match required)
• Lead Spacing: 0.295" (7.50 mm) (exact match required)
• Case Diameter: 0.630" (16.00 mm) (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Lifetime @ 105°C: May exceed 1000 hours (enhancement acceptable)
• Ripple Current Ratings: May exceed specified values (enhancement acceptable)
• ESR (Equivalent Series Resistance): May be lower than 402 mOhm (enhancement acceptable)
• Height: Minor variations acceptable within mechanical envelope constraints
• RoHS Compliance: May upgrade from non-compliant to compliant status
• Product Status: Active status preferred over obsolete

The identified substitute parts maintain all mandatory equivalence parameters while offering improvements in reliability metrics and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

EKMG101ELL331ML25S (Chemi-Con KMG Series)

This part provides direct functional equivalence to the KMG100VB331M16X25LL with identical electrical specifications and matching mechanical dimensions. The EKMG101ELL331ML25S maintains the same 1000-hour lifetime rating at 105°C and equivalent ripple current handling. The component is classified as active product status, ensuring continued availability and manufacturing support. ROHS3 compliance provides regulatory advantage over the obsolete non-compliant original part. Height increases by 0.059" (1.50 mm) to 1.043" (26.50 mm), requiring verification of available board space in the target application. This substitute is suitable for direct replacement in existing designs where regulatory compliance and product availability are primary concerns.

UPW2A331MHD (Nichicon UPW Series)

This part provides functional equivalence with significant enhancement in reliability metrics. The UPW2A331MHD maintains identical capacitance, voltage, tolerance, and operating temperature specifications while offering an 8-fold increase in lifetime rating to 8000 hours at 105°C. Ripple current handling is enhanced to 702 mA at 120 Hz and 1.08 A at 100 kHz, representing 30% and 33% improvements respectively. Impedance is specified at 90 mOhms, indicating superior ESR performance compared to the original 402 mOhm specification. Height remains at 0.984" (25.00 mm), matching the original dimension. ROHS3 compliance is achieved. Product status is classified as "Not For New Designs," indicating this component is in mature production phase with stable supply but not recommended for new design initiation. This substitute is appropriate for applications requiring extended operational life and enhanced thermal performance within existing mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can EKMG101ELL331ML25S be used as a direct replacement for KMG100VB331M16X25LL?

A: Yes. The EKMG101ELL331ML25S maintains identical electrical specifications (330 µF, 100 V, ±20% tolerance) and mechanical compatibility (lead spacing 0.295", case diameter 0.630", through-hole radial mounting). The height increases from 0.984" to 1.043", requiring confirmation that available board space accommodates this 0.059" increase. Both components are Chemi-Con KMG series products with equivalent ripple current ratings and operating temperature ranges.

Q: What is the primary advantage of UPW2A331MHD over the original KMG100VB331M16X25LL?

A: The UPW2A331MHD provides an 8000-hour lifetime rating at 105°C compared to 1000 hours for the original part, representing an 8-fold increase in thermal endurance. Ripple current capacity is enhanced by 30% at 120 Hz and 33% at 100 kHz. Impedance is reduced to 90 mOhms from 402 mOhms, indicating superior high-frequency performance. Mechanical dimensions remain identical, enabling direct board-level substitution.

Q: Are there height constraints when substituting with EKMG101ELL331ML25S?

A: Yes. The EKMG101ELL331ML25S has a maximum seated height of 1.043" (26.50 mm) compared to 0.984" (25.00 mm) for the original KMG100VB331M16X25LL. This 0.059" (1.50 mm) increase must be evaluated against available vertical clearance in the target application. If height-constrained applications exist, UPW2A331MHD maintains the original 0.984" height specification.

Q: Why is UPW2A331MHD classified as "Not For New Designs"?

A: This classification indicates the component is in mature production phase with stable supply and established manufacturing processes. The designation does not imply technical deficiency or imminent discontinuation. It reflects manufacturer strategy regarding design-in recommendations. The part remains suitable for replacement applications and existing design support.

Q: Do all substitute parts maintain RoHS compliance?

A: Both EKMG101ELL331ML25S and UPW2A331MHD are ROHS3 compliant. The original KMG100VB331M16X25LL is RoHS non-compliant. Substitution with either alternative part upgrades regulatory compliance status, which may be required for applications subject to RoHS directives.

Q: Are the ripple current ratings interchangeable between substitute parts?

A: No. EKMG101ELL331ML25S maintains the original ripple current specifications (540 mA @ 120 Hz, 810 mA @ 100 kHz). UPW2A331MHD provides enhanced ratings (702 mA @ 120 Hz, 1.08 A @ 100 kHz). Circuit designs dependent on specific ripple current limits must account for these differences. Enhanced ratings in UPW2A331MHD provide additional thermal margin in high-ripple applications.

Q: Can these parts be used interchangeably in the same circuit?

A: Yes, provided mechanical constraints are satisfied. All three parts maintain identical capacitance (330 µF), voltage rating (100 V), tolerance (±20%), operating temperature range (-55°C to 105°C), and mounting configuration (through-hole radial). The primary consideration is height clearance for EKMG101ELL331ML25S. Enhanced performance characteristics in UPW2A331MHD (lifetime, ripple current, impedance) provide additional design margin without introducing incompatibility.