Equivalent & Substitute Parts for 105HSM050M

Part Overview

The 105HSM050M is a 1 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The HSM series capacitor is designed for general-purpose applications requiring polar electrolytic capacitance in through-hole mounting configurations.

Substiute Parts

105HSM050M

Cornell Dubilier / Illinois CapacitorIn Stock: 1064105HSM050M Datasheet

Current PartRFQ

400LEX1MEFC6.3X11

RubyconIn Stock: 5345400LEX1MEFC6.3X11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 105HSM050M is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 1 µF (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)
• Operating Temperature Range: -40°C ~ 125°C (minimum requirement)

Allowable Variation Parameters:

• Voltage - Rated: Substitute must equal or exceed 50 V
• Physical dimensions: Lead spacing and size may vary within mechanical compatibility constraints
• ESR and ripple current specifications: May differ based on substitute design

The substitute part 400LEX1MEFC6.3X11 from Rubycon meets all mandatory matching criteria and exceeds the voltage rating requirement at 400 V, providing enhanced voltage margin for the application.

Parameter Comparison

Engineering Selection Recommendations

The 400LEX1MEFC6.3X11 from Rubycon is a qualified substitute for the obsolete 105HSM050M based on the following engineering criteria:

Electrical Compatibility: The substitute maintains identical capacitance (1 µF) and tolerance (±20%), with voltage rating of 400 V exceeding the original 50 V requirement. This provides additional voltage margin and reliability headroom for the application.

Mechanical Compatibility: Both components are radial, can-style through-hole capacitors with matching seated height of 0.512" (13.00mm). The substitute has reduced lead spacing (0.098" vs. 0.138") and smaller diameter (0.248" vs. 0.315"), requiring verification of PCB layout compatibility before implementation.

Operational Characteristics: The substitute demonstrates superior performance with extended lifetime (4000 Hrs @ 125°C vs. 2000 Hrs) and higher ripple current ratings across both low and high frequency ranges, indicating improved thermal and electrical performance.

Compliance Status: The substitute is in active production status with ROHS3 compliance and REACH unaffected designation, supporting long-term supply chain continuity and regulatory compliance requirements.

Implementation Consideration: PCB layout verification is required to confirm lead spacing compatibility with existing through-hole pad patterns before design release.

Frequently Asked Questions (FAQ)

Q: Can the 400LEX1MEFC6.3X11 be used as a direct replacement for the 105HSM050M?

A: Electrical substitution is valid. The substitute matches all mandatory electrical parameters (1 µF capacitance, ±20% tolerance, polar configuration, -40°C to 125°C operating range) and exceeds voltage requirements. Mechanical verification of lead spacing (0.098" vs. 0.138") and component diameter (0.248" vs. 0.315") against PCB layout is required before implementation.

Q: What are the key differences between these two capacitors?

A: The primary differences are voltage rating (50 V vs. 400 V), physical dimensions (smaller substitute), lead spacing (2.50mm vs. 3.50mm), lifetime rating (4000 Hrs vs. 2000 Hrs @ 125°C), and ripple current capacity (higher in substitute). Capacitance, tolerance, and operating temperature range are identical.

Q: Why is the substitute rated for 400 V when the original is only 50 V?

A: Higher voltage rating provides additional safety margin and reliability headroom. The substitute operates within the same electrical environment but with greater voltage stress tolerance, reducing failure risk from transient overvoltage conditions.

Q: Are there any compliance or supply chain advantages to using the substitute?

A: Yes. The 400LEX1MEFC6.3X11 is in active production status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance. The original 105HSM050M is obsolete, making the substitute necessary for production continuity.

Q: What must be verified before implementing this substitute?

A: PCB layout compatibility must be confirmed, specifically: lead spacing accommodation (2.50mm vs. 3.50mm), component diameter clearance (6.30mm vs. 8.00mm), and through-hole pad positioning. Seated height is identical (13.00mm), so vertical clearance is not a concern.

Q: Does the higher ripple current rating of the substitute affect circuit performance?

A: No. Higher ripple current capacity indicates improved thermal performance and lower internal heating. This is a beneficial characteristic that does not negatively impact circuit operation.