Equivalent & Substitute Parts for 474KXM100M

Part Overview

The 474KXM100M is a 0.47 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and design continuity. The KXM series has been superseded by newer product lines while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

474KXM100M

Cornell Dubilier / Illinois CapacitorIn Stock: 1214474KXM100M Datasheet

Current PartRFQ

474CKH100M

Cornell Dubilier / Illinois CapacitorIn Stock: 1013474CKH100M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 474KXM100M is based on strict electrical and mechanical parameter matching within the aluminum electrolytic capacitor category. The following criteria determine valid substitutes:

Electrical Parameters (Non-Negotiable):

• Capacitance: 0.47 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters (Non-Negotiable):

• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 2.00 mm (exact match required)
• Physical Dimensions: 5.00 mm diameter, 12.50 mm height maximum (exact match required)

Performance Parameters (Must Meet or Exceed):

• Lifetime @ 105°C: minimum 2000 hours
• Ripple Current @ 120 Hz: minimum 8 mA
• Ripple Current @ 100 kHz: minimum 20 mA
• ESR @ 120 Hz: lower values indicate superior performance

Compliance & Status:

• RoHS3 Compliance required
• REACH Unaffected status required
• Product status: Active preferred for long-term availability

The 474CKH100M meets all critical electrical and mechanical parameters while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 474CKH100M is a direct functional equivalent to the 474KXM100M for applications requiring 0.47 µF, 100 V aluminum electrolytic capacitors in radial through-hole configuration.

Selection Basis:

1. Electrical Equivalence: Both parts share identical capacitance, voltage rating, and tolerance specifications. The substitute meets all minimum performance requirements for ripple current and lifetime at rated temperature.

2. Mechanical Compatibility: Lead spacing, package dimensions, and mounting type are identical, ensuring direct PCB compatibility without layout modifications.

3. Compliance Status: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current manufacturing standards.

4. Product Availability: The 474CKH100M holds active product status, ensuring long-term procurement viability compared to the obsolete 474KXM100M.

5. Performance Enhancement: The substitute exhibits lower ESR (282.19 Ohm vs. 352.737 Ohm) and higher ripple current ratings, providing improved thermal performance and operational margin.

Temperature Range Consideration: The 474CKH100M operates from -40°C to 105°C, compared to the main part's -55°C to 105°C range. Applications requiring operation below -40°C must retain the original 474KXM100M or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the 474CKH100M be used as a direct replacement for the 474KXM100M?

A: Yes, for applications operating within the -40°C to 105°C temperature range. Both parts are electrically and mechanically identical in capacitance, voltage rating, tolerance, lead spacing, and package configuration. The substitute offers improved ESR and ripple current performance.

Q: What is the primary reason for substitution?

A: The 474KXM100M is classified as obsolete. The 474CKH100M is an active product from the same manufacturer, ensuring continued availability and supply chain reliability.

Q: Are there any performance differences between these parts?

A: The 474CKH100M exhibits superior performance characteristics: ESR is reduced from 352.737 Ohm to 282.19 Ohm at 120 Hz, and ripple current ratings are increased (12 mA vs. 8 mA at 120 Hz; 27.6 mA vs. 20 mA at 100 kHz). These improvements indicate lower heat generation and greater current handling capability.

Q: Does the operating temperature range difference affect compatibility?

A: The 474CKH100M's lower temperature limit is -40°C instead of -55°C. For applications requiring operation below -40°C, the original 474KXM100M must be retained. For standard industrial and commercial applications (typically -40°C minimum), the substitute is fully compatible.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 474KXM100M and 474CKH100M are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards.

Q: Will the substitute fit the existing PCB layout?

A: Yes. Both parts have identical lead spacing (2.00 mm), diameter (5.00 mm), and maximum height (12.50 mm). No PCB modifications are required.

Q: What is the inventory status for each part?

A: The 474KXM100M has 1107 pieces in stock (obsolete series). The 474CKH100M has 909 pieces in stock (active series). For new designs, the 474CKH100M is recommended due to active product status.