4SW150M Equivalent & Substitute Parts Reference

Part Overview

The 4SW150M is a 150 µF, 4 V aluminum polymer capacitor manufactured by Rubycon in the 2917 (7343 Metric) surface mount package. This component is designed for general purpose applications requiring low ESR performance and stable operation across extended temperature ranges. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing design support and production continuity.

Substiute Parts

4SW150M

RubyconIn Stock: 14904SW150M Datasheet

Current PartRFQ

EEF-CX0G151R

Panasonic Electronic ComponentsIn Stock: 21692EEF-CX0G151R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4SW150M is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 150 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (exact match required)

The EEF-CX0G151R from Panasonic Electronic Components meets all substitution criteria. While this part exhibits higher ESR (15 mOhm versus 9 mOhm) and greater ripple current capability (5.1 A versus 4.6 A at 100 kHz), these variations remain within acceptable functional parameters for general purpose applications and do not compromise circuit performance.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0G151R is the qualified substitute for the 4SW150M. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The Panasonic part carries active product status with established supply availability, addressing the obsolescence constraint of the original Rubycon component. The reduced seated height (1.90mm versus 2.70mm) provides additional design flexibility for space-constrained applications. Both parts are certified for identical operating temperature ranges and lifetime specifications, supporting direct functional replacement in general purpose circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0G151R replace the 4SW150M in existing designs?

A: Yes. Both components share identical capacitance (150 µF), voltage rating (4 V), tolerance (±20%), package (2917 / 7343 Metric), and operating specifications. The parts are electrically and mechanically compatible for direct substitution.

Q: What is the significance of the ESR difference between these parts?

A: The 4SW150M has 9 mOhm ESR while the EEF-CX0G151R has 15 mOhm ESR. For general purpose applications, this difference is functionally acceptable. Applications requiring minimal ESR should be evaluated against specific circuit requirements.

Q: Are there height considerations for PCB layout?

A: Yes. The EEF-CX0G151R has a maximum seated height of 1.90mm compared to 2.70mm for the 4SW150M. This reduced height may provide clearance advantages in compact designs but does not affect electrical compatibility.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the 4SW150M and EEF-CX0G151R are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the supply status difference between these parts?

A: The 4SW150M is classified as obsolete with limited inventory. The EEF-CX0G151R maintains active product status with established supply channels, ensuring long-term availability for production and design support.