MAL212385151 Equivalent & Substitute Parts

Part Overview

The MAL212385151 is a 150 µF, 16 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, making identification of suitable substitute parts essential for ongoing system support and component procurement.

The primary reason for seeking alternatives is the obsolete status of this part, which restricts availability through standard distribution channels and may impact long-term supply chain reliability for applications requiring this capacitor specification.

Substiute Parts

MAL212385151

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1287MAL212385151 Datasheet

Current PartRFQ

MAL211837151E3

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAL212385151 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Capacitance value: 150 µF (exact match required)
• Tolerance: ±20% (matching tolerance specification)
• Mounting type: Through Hole, Axial configuration
• Package type: Axial, Can

Allowable Parameter Variations:

• Voltage rating: May be equal to or greater than 16 V (higher voltage ratings provide enhanced safety margin)
• ESR: Lower values are acceptable (improved performance characteristic)
• Lifetime rating: Lower values are acceptable for non-critical applications
• Operating temperature range: Must encompass the application's required operating conditions
• Physical dimensions: Must fit within the PCB layout constraints

The substitute part MAL211837151E3 meets all mandatory compatibility criteria while offering improved electrical characteristics through lower ESR and higher voltage rating, though with reduced lifetime specification and modified operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The MAL211837151E3 is a direct functional substitute for the MAL212385151 based on the following engineering criteria:

Product Status Advantage: The substitute part maintains active product status, ensuring continued availability and supply chain stability compared to the obsolete original part.

Compliance Enhancement: The MAL211837151E3 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This compliance improvement supports modern manufacturing standards and regulatory requirements.

Electrical Performance: The substitute provides superior ESR characteristics (1.17 Ohm versus 2.1 Ohm), resulting in lower heat dissipation and improved efficiency in applications sensitive to series resistance.

Voltage Rating: The 40 V rating of the substitute exceeds the original 16 V specification, providing additional safety margin and stress reduction during operation.

Physical Fit Consideration: The substitute part is physically smaller (0.394" Dia x 0.709" L versus 0.370" Dia x 0.917" L), which may require PCB layout verification to confirm fit within existing mounting locations.

Operational Constraints: Applications requiring operation below -40°C must retain the original part, as the substitute's operating range begins at -40°C. Additionally, applications with extended thermal cycling at 125°C should evaluate the reduced lifetime specification (4000 Hrs versus 20000 Hrs) against actual duty cycle requirements.

Frequently Asked Questions (FAQ)

Q: Can MAL211837151E3 be used as a direct replacement for MAL212385151?

A: Yes, for applications operating within -40°C to 125°C. The substitute maintains identical capacitance and tolerance specifications while offering improved ESR and higher voltage rating. Physical dimensions differ slightly; PCB layout verification is required.

Q: What are the key differences between these parts?

A: The substitute provides 40 V rating versus 16 V, lower ESR (1.17 Ohm versus 2.1 Ohm), ROHS3 compliance versus non-compliance, and active product status versus obsolete. The substitute has reduced lifetime rating (4000 Hrs versus 20000 Hrs @ 125°C) and narrower low-temperature operating range (-40°C versus -55°C minimum).

Q: Are there any compatibility concerns with PCB mounting?

A: The substitute part is physically smaller in length (0.709" versus 0.917"). Verify that the reduced length accommodates existing PCB layout and that the slightly larger diameter (0.394" versus 0.370") does not create clearance issues.

Q: Which part should be selected for new designs?

A: MAL211837151E3 is the appropriate choice for new designs due to active product status, ROHS3 compliance, and superior electrical characteristics. The original part should be retained only for legacy system maintenance where the specific operating temperature range (-55°C minimum) or extended lifetime rating is required.

Q: Does the higher voltage rating of the substitute affect circuit operation?

A: No. A capacitor with higher voltage rating operates identically to one with lower voltage rating when both are used at the same applied voltage. The higher rating provides additional safety margin and reduces component stress.

Q: What is the impact of different ripple current specifications?

A: The original part specifies 310 mA @ 100 Hz; the substitute specifies 269.1 mA @ 10 kHz. These measurements occur at different frequencies and cannot be directly compared. Application-specific ripple current requirements must be evaluated against the actual operating frequency of the circuit.