MAL212326151 Equivalent & Substitute Parts

Part Overview

The MAL212326151 is a 150 µF, 25 V aluminum electrolytic capacitor in axial configuration, manufactured by Vishay Beyschlag/Draloric/BC Components as part of the 123 SAL-A series. This component is classified as obsolete, indicating discontinuation from active production. The part features a 2.1 Ohm equivalent series resistance at 100 Hz and supports a 20,000-hour lifetime at 125°C operating temperature. Due to its obsolete status, identifying functionally equivalent substitute components is necessary for ongoing design support and procurement continuity.

Substiute Parts

MAL212326151

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 753MAL212326151 Datasheet

Current PartRFQ

MAL211837151E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2631MAL211837151E3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAL212326151 is determined by the following core parameters:

• Capacitance Value: Must be 150 µF (exact match required)
• Tolerance: Must be ±20% or tighter
• Mounting Type: Must be Through Hole to maintain PCB compatibility
• Package Configuration: Must be Axial, Can format
• Polarization: Must be Polar
• Voltage Rating: Must be equal to or greater than 25 V (higher voltage ratings provide design margin)

The substitute part MAL211837151E3 meets all substitution criteria. While it features a higher rated voltage (40 V) and improved ESR characteristics (1.17 Ohm), these represent performance enhancements rather than deviations from the core electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

The MAL211837151E3 serves as a direct functional substitute for the MAL212326151 based on matching core electrical and mechanical specifications. Selection of the substitute part is supported by the following factors:

• Product Availability: The substitute part is classified as Active, ensuring procurement continuity and long-term availability compared to the obsolete main part.
• Regulatory Compliance: The substitute part achieves ROHS3 compliance, whereas the main part is non-compliant. This compliance status is relevant for applications subject to RoHS regulations.
• Electrical Performance: The substitute part provides lower ESR (1.17 Ohm versus 2.1 Ohm), which reduces heat dissipation and improves circuit performance in ripple-current-sensitive applications.
• Voltage Margin: The 40 V rating of the substitute part exceeds the 25 V requirement, providing additional design margin and stress reduction.
• Physical Footprint: The substitute part features a more compact axial can design (10.00mm x 18.00mm versus 10.30mm x 32.00mm), which may provide PCB layout advantages in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can MAL211837151E3 be used as a direct replacement for MAL212326151 in existing designs?

A: Yes. Both parts share identical capacitance (150 µF), tolerance (±20%), mounting type (Through Hole), and package configuration (Axial, Can). The substitute part's higher voltage rating (40 V) and lower ESR provide performance benefits without compromising circuit function.

Q: What are the physical compatibility considerations?

A: Both parts use axial through-hole mounting with compatible lead spacing. The substitute part is physically smaller (10.00mm x 18.00mm versus 10.30mm x 32.00mm). PCB layouts designed for the larger main part will accommodate the smaller substitute part without modification. Layouts designed for the smaller substitute part may require verification if retrofitting the larger main part.

Q: How do the operating temperature ranges differ?

A: The main part operates from -55°C to 125°C, while the substitute part operates from -40°C to 125°C. For applications requiring operation below -40°C, the main part specification must be maintained. For standard industrial and commercial temperature ranges, the substitute part is suitable.

Q: What is the significance of the lifetime rating difference?

A: The main part specifies 20,000 hours at 125°C, while the substitute part specifies 4,000 hours at 125°C. For applications with extended operational life requirements at elevated temperatures, this difference should be evaluated against actual duty cycle and thermal management conditions.

Q: Does RoHS compliance affect substitution decisions?

A: The substitute part is ROHS3 compliant, while the main part is non-compliant. For applications or markets requiring RoHS compliance, the substitute part is the appropriate selection. For legacy systems without compliance requirements, either part is functionally acceptable.