LXY50VB331M12X20LL Equivalent & Substitute Parts

Part Overview

The LXY50VB331M12X20LL is a 330 µF, 50 V aluminum electrolytic capacitor manufactured by Chemi-Con in the LXY series. This radial, through-hole component is rated for 7000 hours at 105°C and is designed for general-purpose applications. The part is currently obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new procurement requirements.

Substiute Parts

LXY50VB331M12X20LL

Chemi-ConIn Stock: 1007LXY50VB331M12X20LL Datasheet

Current PartRFQ

ELXY500ELL331MK20S

Chemi-ConIn Stock: 646ELXY500ELL331MK20S Datasheet

SimilarRFQ

UPW1J331MHD

NichiconIn Stock: 12836UPW1J331MHD Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LXY50VB331M12X20LL is determined by strict adherence to the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: Minimum 50 V (equal or higher voltage rating is acceptable)
• Lifetime: 7000 Hrs @ 105°C (minimum requirement)
• Operating Temperature: -55°C ~ 105°C (minimum range requirement)
• Polarization: Polar (exact match required)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Can (exact match required)
• Lead Spacing: 0.197" (5.00 mm) (exact match required)
• Case Diameter: 0.492" (12.50 mm) (exact match required)

Substitutes are classified into two categories:

Category 1 - Direct Equivalent (Same Voltage Rating): ELXY500ELL331MK20S maintains identical electrical specifications (50 V rating) with equivalent mechanical dimensions. This part is active and RoHS3 compliant, making it suitable for direct replacement in existing designs.

Category 2 - Upgrade Substitute (Higher Voltage Rating): UPW1J331MHD provides a 63 V voltage rating with identical capacitance and tolerance. The higher voltage rating allows operation in circuits with greater voltage margins. This part is manufactured by Nichicon and is RoHS3 compliant, though marked as not for new designs.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in Existing Designs: ELXY500ELL331MK20S is the primary equivalent substitute. This Chemi-Con part maintains identical electrical specifications (330 µF, 50 V, ±20% tolerance) and mechanical dimensions as the original LXY50VB331M12X20LL. The part is currently active with confirmed inventory availability. RoHS3 compliance status provides regulatory advantage for systems requiring environmental compliance. The maximum height of 0.846" (21.50 mm) versus the original 0.787" (20.00 mm) requires verification of available PCB clearance in the target application.

For Voltage-Margin Applications: UPW1J331MHD provides a 63 V rating while maintaining the 330 µF capacitance and ±20% tolerance. This Nichicon part is suitable for circuits where higher voltage headroom is beneficial. The part is RoHS3 compliant. However, the product status is marked as not for new designs, limiting its use to legacy system support. The impedance specification of 85 mOhms is higher than the original 59 mOhms, which may affect ripple current performance in high-frequency applications.

Compliance Considerations: Both substitute parts are RoHS3 compliant, whereas the original LXY50VB331M12X20LL is non-compliant. This compliance improvement supports long-term supply chain sustainability and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can ELXY500ELL331MK20S be used as a direct replacement for LXY50VB331M12X20LL?

A: Yes. ELXY500ELL331MK20S meets all electrical and mechanical substitution criteria: identical 330 µF capacitance, ±20% tolerance, 50 V voltage rating, 7000 Hrs @ 105°C lifetime, and matching through-hole radial package dimensions with 5.00 mm lead spacing and 12.50 mm case diameter. The height difference of 0.059" (1.50 mm) must be verified against available PCB clearance.

Q: What is the difference between ELXY500ELL331MK20S and UPW1J331MHD?

A: Both parts share the same 330 µF capacitance and ±20% tolerance. ELXY500ELL331MK20S maintains the 50 V rating of the original part, while UPW1J331MHD provides a higher 63 V rating. UPW1J331MHD exhibits higher ripple current capability (838.5 mA @ 120 Hz versus 595 mA) but also higher impedance (85 mOhms versus 59 mOhms). ELXY500ELL331MK20S is active; UPW1J331MHD is not for new designs.

Q: Are there mechanical compatibility issues with the substitute parts?

A: ELXY500ELL331MK20S has a maximum height of 0.846" (21.50 mm) compared to the original 0.787" (20.00 mm). This 1.50 mm difference requires clearance verification on the PCB. UPW1J331MHD maintains the original height of 0.787" (20.00 mm). Both parts maintain identical lead spacing (5.00 mm) and case diameter (12.50 mm).

Q: Why is UPW1J331MHD marked as not for new designs?

A: This designation indicates the part is in mature or declining production status at Nichicon. While suitable for legacy system support and repair, it is not recommended for new product development. ELXY500ELL331MK20S is the preferred choice for new designs due to its active product status.

Q: What is the impact of impedance differences between the parts?

A: The original LXY50VB331M12X20LL and ELXY500ELL331MK20S both specify 59 mOhms impedance. UPW1J331MHD specifies 85 mOhms. Higher impedance may result in increased voltage ripple and reduced high-frequency filtering performance. In applications with stringent ripple current requirements, ELXY500ELL331MK20S is preferred.

Q: Are all substitute parts RoHS compliant?

A: ELXY500ELL331MK20S and UPW1J331MHD are both RoHS3 compliant. The original LXY50VB331M12X20LL is RoHS non-compliant. Substitution with either equivalent part improves regulatory compliance status.