KMH25VS682M22X30T2 Equivalent & Substitute Parts

Part Overview

The KMH25VS682M22X30T2 is a 6800 µF, 25 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMH series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance in a compact form factor. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

KMH25VS682M22X30T2

Chemi-ConIn Stock: 786KMH25VS682M22X30T2 Datasheet

Current PartRFQ

381LX682M025H022

Cornell Dubilier Electronics (CDE)In Stock: 839381LX682M025H022 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KMH25VS682M22X30T2 is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Capacitance: 6800 µF (exact match required)
• Voltage Rating: 25 V (minimum; higher ratings acceptable)
• Tolerance: ±20% (must not exceed this tolerance band)
• Package Type: Radial, Can - Snap-In (mechanical form factor)
• Lead Spacing: 0.394" (10.00 mm) (PCB hole pattern)
• Diameter: 0.866" (22.00 mm) (physical envelope)
• Polarization: Polar (circuit requirement)
• Mounting Type: Through Hole (assembly method)

Acceptable Variation Parameters:

• Height: Substitute parts may exceed the original 1.181" (30.00 mm) maximum seated height, provided the application enclosure permits
• Lifetime @ Temperature: Substitute parts with equal or greater lifetime ratings are acceptable
• Ripple Current: Substitute parts with equal or greater ripple current ratings are acceptable
• ESR: Lower ESR values are acceptable; higher values require circuit analysis

The identified substitute part 381LX682M025H022 meets all mandatory matching parameters and demonstrates improved performance characteristics in lifetime and ripple current ratings.

Parameter Comparison

Engineering Selection Recommendations

The 381LX682M025H022 from Cornell Dubilier Electronics qualifies as a direct substitute for the obsolete KMH25VS682M22X30T2. Selection is based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters match exactly. The substitute maintains 6800 µF capacitance at 25 V with ±20% tolerance, ensuring circuit performance equivalence.

Mechanical Compatibility: Lead spacing (10.00 mm) and can diameter (22.00 mm) are identical, confirming PCB footprint compatibility. The substitute height of 1.260" (32.00 mm) exceeds the original by 0.079" (2.00 mm). Verification of available clearance in the target application enclosure is required before implementation.

Performance Enhancement: The substitute demonstrates superior performance in two critical areas: lifetime rating increases from 2000 hours to 3000 hours at 105°C, and ripple current capacity increases across both low-frequency (1.86 A to 2.4 A @ 120 Hz) and high-frequency (2.0088 A to 2.8 A) operating conditions.

Regulatory Compliance: The substitute is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part status is not specified for these certifications.

Product Availability: The substitute is classified as active product, ensuring long-term availability and supply chain stability compared to the obsolete original.

Frequently Asked Questions (FAQ)

Q: Can the 381LX682M025H022 be used as a direct replacement without PCB modification?

A: Yes, for PCB layout. The lead spacing and can diameter are identical. However, the substitute is 0.079" (2.00 mm) taller. Verify that the application enclosure provides sufficient vertical clearance before installation.

Q: Are the electrical characteristics identical between the original and substitute?

A: Yes. Capacitance (6800 µF), voltage rating (25 V), tolerance (±20%), and operating temperature range (-40°C ~ 105°C) are identical. The substitute offers improved ripple current handling and extended lifetime at rated temperature.

Q: What is the significance of the higher ripple current rating on the substitute?

A: Higher ripple current capacity indicates the substitute can dissipate greater AC current without exceeding temperature limits. This provides additional margin in applications with high-frequency switching or significant AC ripple components.

Q: Does the increased lifetime rating affect circuit performance?

A: No. Lifetime rating indicates the time duration the capacitor maintains specified electrical characteristics under rated conditions. A longer lifetime (3000 hours vs. 2000 hours) extends the expected service life before performance degradation occurs.

Q: Is the height difference of 0.079" critical for all applications?

A: Not universally. Applications with generous vertical clearance are unaffected. Applications with tight mechanical constraints must verify available space. Measure the clearance between the original component mounting location and any overlying components or enclosure features.

Q: What does ROHS3 compliance mean for this substitute?

A: ROHS3 compliance indicates the substitute meets Restriction of Hazardous Substances Directive requirements, restricting specified hazardous materials. This is relevant for applications subject to EU environmental regulations or customer specifications requiring ROHS compliance.

Q: Can the substitute be used in applications requiring the exact original height?

A: No. The substitute height of 1.260" (32.00 mm) exceeds the original maximum of 1.181" (30.00 mm). Applications with strict height constraints require alternative solutions or enclosure modification.

Q: Are there any polarity considerations when installing the substitute?

A: Yes. Both the original and substitute are polar capacitors. Polarity marking must be observed during installation. Reverse polarity connection will damage the capacitor and may cause circuit failure.