227RZM050M Equivalent & Substitute Parts

Part Overview

The 227RZM050M is a 220 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as obsolete, indicating discontinuation from active production. The RZM series specifications include 904 mOhm ESR at 120 Hz and a rated lifetime of 3000 hours at 105°C. Due to obsolete status, equivalent substitute parts from active product lines are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

227RZM050M

Cornell Dubilier / Illinois CapacitorIn Stock: 780227RZM050M Datasheet

Current PartRFQ

227KXM050M

Cornell Dubilier / Illinois CapacitorIn Stock: 2623227KXM050M Datasheet

UpgradeRFQ

B41851A6227M000

EPCOS - TDK ElectronicsIn Stock: 16723B41851A6227M000 Datasheet

DirectRFQ

MAL215051221E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2608MAL215051221E3 Datasheet

UpgradeRFQ

MAL215061221E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1048MAL215061221E3 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution validity for the 227RZM050M is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 220 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage - Rated: 50 V (exact match required)
• Polarization: Polar (exact match required)
• Lead Spacing: 0.197" (5.00 mm) (exact match required)
• Size / Dimension: 0.394" Dia (10.00 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)

Allowable Variation Parameters:

• ESR @ 120 Hz: Substitutes may have lower ESR values, indicating improved performance
• Lifetime @ 105°C: Substitutes may have equal or extended lifetime ratings
• Operating Temperature Range: Substitutes must maintain or exceed the specified range
• Product Status: Active status substitutes are preferred over obsolete parts

All four substitute parts meet the mandatory matching criteria and are therefore valid electrical and mechanical equivalents for the 227RZM050M.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 227KXM050M

The 227KXM050M is the preferred substitute. Manufactured by the same supplier (Cornell Dubilier / Illinois Capacitor), this part maintains design continuity while offering active product status. The KXM series provides improved performance with lower ESR (753.6 mOhm versus 904 mOhm) and extended lifetime (4000 hours versus 3000 hours at 105°C). Height reduction from 18.00 mm to 17.50 mm is within acceptable mechanical tolerance for through-hole radial can packages. ROHS3 compliance ensures regulatory alignment with current manufacturing standards.

Secondary Recommendation: MAL215051221E3 or MAL215061221E3

Both Vishay Beyschlag/Draloric/BC Components parts from the 150 RMI series are active products with extended lifetime ratings (6000 hours at 105°C). These parts carry AEC-Q200 automotive qualification, indicating enhanced reliability screening. Height is 17.50 mm, matching the 227KXM050M. Selection between MAL215051221E3 (2586 Pcs inventory) and MAL215061221E3 (999 Pcs inventory) depends on supply chain requirements. Both are ROHS3 compliant.

Alternative: B41851A6227M000

The EPCOS - TDK Electronics B41851A6227M000 meets all mandatory electrical and mechanical parameters. However, this part carries "Not For New Designs" status, limiting its suitability for new production. The significantly reduced height (13.50 mm) may require PCB layout verification. This part is suitable only for field replacement of existing 227RZM050M installations where mechanical constraints permit the reduced height.

Frequently Asked Questions (FAQ)

Q: Can the 227KXM050M directly replace the 227RZM050M without PCB modifications?

A: Yes. The 227KXM050M is mechanically and electrically compatible. Lead spacing (5.00 mm), diameter (10.00 mm), and mounting type (through-hole radial) are identical. The height reduction from 18.00 mm to 17.50 mm is within standard PCB tolerance for radial can packages and does not require layout changes.

Q: What is the significance of the lower ESR in the 227KXM050M?

A: Lower ESR (753.6 mOhm versus 904 mOhm at 120 Hz) indicates reduced equivalent series resistance, resulting in lower heat dissipation and improved ripple current handling. This represents improved performance characteristics while maintaining electrical equivalence.

Q: Are the Vishay MAL215051221E3 and MAL215061221E3 parts interchangeable?

A: Yes. Both parts are from the same 150 RMI series with identical electrical specifications, dimensions, and ratings. The difference is inventory availability. MAL215051221E3 has higher stock (2586 Pcs) compared to MAL215061221E3 (999 Pcs).

Q: Why is the B41851A6227M000 marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production phase. While electrically and mechanically compatible, it is not recommended for new product development. It remains suitable for field replacement and maintenance of existing equipment.

Q: Do all substitute parts meet current compliance standards?

A: The 227KXM050M, MAL215051221E3, and MAL215061221E3 are ROHS3 compliant. The B41851A6227M000 is also ROHS3 compliant. All parts are REACH unaffected and carry EAR99 ECCN classification, matching the original part's regulatory status.

Q: What is the advantage of AEC-Q200 rating on the Vishay parts?

A: AEC-Q200 is an automotive qualification standard requiring enhanced reliability testing and screening. Parts carrying this rating are suitable for automotive applications requiring higher reliability assurance. This qualification is not present on the original 227RZM050M or the 227KXM050M.

Q: Can the B41851A6227M000 be used in space-constrained applications?

A: The B41851A6227M000 has a significantly reduced height of 13.50 mm compared to the original 18.00 mm. This reduction may allow installation in space-constrained designs, but PCB layout verification is required to confirm mechanical clearance and electrical performance.