MAL212386151 Equivalent & Substitute Parts

Part Overview

The MAL212386151 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

MAL212386151

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 678MAL212386151 Datasheet

Current PartRFQ

MAL211837151E3

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAL212386151 is determined by the following critical parameters:

• Capacitance Value: Must remain 150 µF (±20% tolerance acceptable)
• Voltage Rating: Substitute must equal or exceed 25 V
• Mounting Type: Must be Through Hole to maintain PCB compatibility
• Package Configuration: Must be Axial, Can format
• Polarization: Must be Polar
• Physical Dimensions: Should accommodate existing PCB footprint constraints

The MAL211837151E3 qualifies as a substitute based on matching capacitance (150 µF), maintaining polar axial configuration, and exceeding the voltage requirement (40 V rated). Both components share identical through-hole mounting and axial can packaging, ensuring mechanical and electrical compatibility within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

The MAL211837151E3 serves as the primary substitute for the obsolete MAL212386151. Selection of this substitute is supported by the following factors:

Electrical Compatibility: Both components maintain identical 150 µF capacitance and ±20% tolerance. The substitute's 40 V rating exceeds the original 25 V specification, providing voltage margin within the circuit design. The substitute exhibits lower ESR (1.17 Ohm versus 2.1 Ohm), which may improve circuit performance characteristics.

Mechanical Compatibility: Both components utilize through-hole axial can packaging. The substitute is physically smaller (10.00mm x 18.00mm versus 10.30mm x 32.00mm), which may require PCB layout verification to confirm footprint accommodation.

Compliance Status: The substitute is ROHS3 compliant and carries active product status, ensuring long-term availability and regulatory alignment. The original part is RoHS non-compliant and obsolete.

Operational Considerations: The substitute operates across -40°C to 125°C, compared to the original -55°C to -40°C lower temperature limit. Applications requiring operation below -40°C require alternative component selection. The substitute's 4,000-hour lifetime at 125°C is lower than the original 20,000-hour specification; applications with extended thermal stress requirements should evaluate this parameter against circuit duty cycles.

Frequently Asked Questions (FAQ)

Q: Can MAL211837151E3 directly replace MAL212386151 in all applications?

A: Direct replacement is possible for applications operating within -40°C to 125°C temperature range and not requiring the original 20,000-hour thermal lifetime specification. PCB layout verification is required due to dimensional differences (smaller substitute component).

Q: What is the significance of the voltage rating difference (25 V vs. 40 V)?

A: The substitute's higher 40 V rating provides voltage margin and is electrically compatible with circuits designed for 25 V operation. No circuit modification is required; the component will function safely at lower applied voltages.

Q: How do ESR differences affect circuit performance?

A: The substitute's lower ESR (1.17 Ohm versus 2.1 Ohm) may reduce ripple voltage and heat generation in high-frequency ripple current applications. This represents an improvement over the original specification.

Q: Are there physical space constraints with the smaller substitute component?

A: The substitute is physically smaller (10.00mm x 18.00mm versus 10.30mm x 32.00mm). PCB footprint and lead spacing must be verified to confirm accommodation within existing board layouts.

Q: What compliance certifications apply to the substitute?

A: MAL211837151E3 is ROHS3 compliant and REACH unaffected. The original MAL212386151 is RoHS non-compliant and REACH affected. Regulatory requirements for the end application determine compliance necessity.

Q: Is the reduced thermal lifetime (4,000 Hrs vs. 20,000 Hrs @ 125°C) a concern?

A: Thermal lifetime significance depends on circuit duty cycle and operating temperature profile. Applications with continuous high-temperature operation should evaluate whether 4,000-hour specification meets reliability requirements.