Equivalent & Substitute Parts for 126KXM100M

Part Overview

The 126KXM100M is a 12 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general-purpose applications requiring polar electrolytic capacitance in through-hole mounting configurations. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C.

Substitute parts become necessary when the primary component reaches end-of-life status, experiences supply constraints, or when design requirements permit selection from alternative manufacturers while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

126KXM100M

Cornell Dubilier / Illinois CapacitorIn Stock: 1069126KXM100M Datasheet

Current PartRFQ

UPJ2A120MED

NichiconIn Stock: 2376UPJ2A120MED Datasheet

DirectRFQ

UPM2A120MED

NichiconIn Stock: 4898UPM2A120MED Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 126KXM100M are classified based on strict adherence to the following critical parameters:

Critical Matching Parameters:

• Capacitance: 12 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Lead Spacing: 0.098" (2.50mm) (exact match required)
• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)

Important Compatibility Parameters:

• Lifetime @ Temperature: 2000 Hrs @ 105°C (minimum requirement)
• Physical Dimensions: Diameter 0.248" (6.30mm), Height ≤ 0.492" (12.50mm)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

All identified substitute parts meet these critical parameters. Variations in ESR, impedance, and ripple current ratings are permissible provided they do not exceed application-specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status): The 126KXM100M remains the preferred component for new designs and ongoing production due to its Active product status. This part is currently manufactured and available through normal distribution channels.

Secondary Selection (Obsolete Status - UPJ2A120MED): The UPJ2A120MED from Nichicon is classified as Obsolete. This part meets all critical electrical and mechanical parameters but should be selected only when 126KXM100M availability is constrained. The UPJ2A120MED exhibits a maximum seated height of 0.472" (12.00mm), which is 0.020" shorter than the 126KXM100M. This dimensional difference must be verified against PCB layout constraints and component clearance requirements before substitution.

Tertiary Selection (Obsolete Status with Automotive Rating - UPM2A120MED): The UPM2A120MED from Nichicon is classified as Obsolete and carries AEC-Q200 automotive qualification. This part meets all critical electrical and mechanical parameters and maintains the same maximum seated height of 0.492" (12.50mm) as the primary part. The UPM2A120MED is suitable for applications requiring automotive-grade reliability specifications. Selection of this part should be limited to applications where automotive qualification is a design requirement or where general-purpose applications benefit from enhanced reliability margins.

Compliance Verification: All three parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for restricted substance management.

Frequently Asked Questions (FAQ)

Q1: Can UPJ2A120MED be used as a direct replacement for 126KXM100M?

A: UPJ2A120MED meets all critical electrical parameters (capacitance, voltage, tolerance, polarization, temperature range, lifetime) and mechanical parameters (lead spacing, package type, mounting type). However, the maximum seated height differs by 0.020" (0.48mm). Verification against PCB layout and component clearance is required before substitution.

Q2: What is the difference between UPJ2A120MED and UPM2A120MED?

A: Both parts are manufactured by Nichicon and meet identical electrical specifications for the 126KXM100M substitution. The primary differences are: (1) UPJ2A120MED has a maximum seated height of 0.472" (12.00mm), while UPM2A120MED matches the original height of 0.492" (12.50mm); (2) UPM2A120MED carries AEC-Q200 automotive qualification; (3) UPM2A120MED exhibits higher ripple current ratings (75 mA @ 120 Hz and 150 mA @ 10 kHz versus 57 mA and 114 mA respectively).

Q3: Are there any electrical performance differences between these parts?

A: The 126KXM100M specifies an ESR of 11.0524 Ohm @ 120Hz and impedance of 2.8 Ohms. The Nichicon substitutes (UPJ2A120MED and UPM2A120MED) specify lower impedance values of 1 Ohm. Both substitute parts provide higher ripple current capacity than the original part. These differences indicate improved electrical performance characteristics in the substitute parts. Circuit-level verification is required if the application depends on specific ESR or impedance values.

Q4: Why are UPJ2A120MED and UPM2A120MED classified as Obsolete?

A: Obsolete product status indicates that these parts are no longer in active production by the manufacturer. Existing inventory may be available through authorized distributors, but long-term availability cannot be guaranteed. New designs should prioritize the Active-status 126KXM100M. Obsolete parts are suitable for legacy system maintenance and repair applications where component replacement is necessary.

Q5: Does the choice between these parts affect circuit design?

A: All three parts share identical capacitance, voltage rating, tolerance, and temperature specifications. The primary design considerations are: (1) physical dimensions for PCB layout compatibility; (2) ripple current ratings for thermal management in high-frequency applications; (3) ESR/impedance values if the circuit includes frequency-dependent filtering or noise suppression requirements. Consult application-specific circuit documentation to determine whether substitute parts' electrical characteristics are compatible with circuit performance requirements.

Q6: What packaging options are available?

A: All three parts are supplied in Radial, Can package with Through Hole mounting. The 126KXM100M is available in Bulk packaging. Packaging format does not affect electrical or mechanical compatibility; it reflects order quantity and distribution method only.

Q7: Are these parts suitable for automotive applications?

A: The 126KXM100M and UPJ2A120MED are rated for General Purpose applications. The UPM2A120MED carries AEC-Q200 automotive qualification, making it suitable for automotive-grade applications. For automotive system designs, UPM2A120MED is the appropriate selection among the three options.