UCD2A151MNJ1MS Equivalent & Substitute Parts

Part Overview

The UCD2A151MNJ1MS is a 150 µF, 100 V aluminum electrolytic capacitor manufactured by Nichicon in the UCD series. This surface mount radial can capacitor is designed for automotive applications with AEC-Q200 qualification and a rated lifetime of 5000 hours at 105°C. The part is currently active in production with 937 units in stock. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and enable component selection based on availability and specific application requirements.

Substiute Parts

UCD2A151MNJ1MS

NichiconIn Stock: 966UCD2A151MNJ1MS Datasheet

Current PartRFQ

EEE-FK2A151AM

Panasonic Electronic ComponentsIn Stock: 1265EEE-FK2A151AM Datasheet

DirectRFQ

EEV-FK2A151V

Panasonic Electronic ComponentsIn Stock: 830EEV-FK2A151V Datasheet

DirectRFQ

AFK157M2AP44T-F

Cornell Dubilier Electronics (CDE)In Stock: 764AFK157M2AP44T-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCD2A151MNJ1MS is determined by strict equivalence across the following critical parameters:

• Capacitance: 150 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime @ Temperature: 5000 Hrs @ 105°C (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)
• Package Type: Radial, Can - SMD (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Physical Diameter: 0.630" (16.00mm) (exact match required)
• Impedance: 170 mOhms (exact match required)
• Ripple Current @ 100 kHz: 793 mA (exact match required)
• AEC-Q200 Rating: Yes (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria. Variations in height, land size, and ripple current at low frequency do not disqualify substitution when all primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—EEE-FK2A151AM, EEV-FK2A151V, and AFK157M2AP44T-F—are functionally equivalent to the UCD2A151MNJ1MS and meet identical electrical and mechanical specifications. Each part carries AEC-Q200 automotive qualification and ROHS3 compliance, confirming suitability for automotive applications.

Selection among these alternatives should be based on:

• Availability: EEE-FK2A151AM (Panasonic) offers the highest current inventory at 1180 units.
• Application-Specific Features: EEV-FK2A151V includes anti-vibration characteristics, suitable for high-vibration automotive environments.
• Land Size Compatibility: AFK157M2AP44T-F has a wider land size (19.00mm width) compared to the original part (17.10mm width), requiring PCB layout verification before substitution.
• Height Clearance: The UCD2A151MNJ1MS is 0.20mm taller (17.50mm) than the Panasonic and CDE alternatives (17.00mm), which may provide additional clearance in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can EEE-FK2A151AM be used as a direct replacement for UCD2A151MNJ1MS?

A: Yes. EEE-FK2A151AM meets all critical electrical and mechanical parameters: 150 µF capacitance, 100 V voltage rating, ±20% tolerance, 5000 Hrs @ 105°C lifetime, identical impedance, and matching ripple current at 100 kHz. Both parts are AEC-Q200 qualified and ROHS3 compliant. The 0.02" (0.50mm) reduction in height and minor land size difference do not affect functional compatibility in standard automotive applications.

Q: What is the difference between EEV-FK2A151V and EEE-FK2A151AM?

A: Both are Panasonic FK series parts with identical electrical specifications. EEV-FK2A151V is designated as anti-vibration, making it suitable for applications subject to mechanical shock or vibration. EEE-FK2A151AM is the standard variant. The anti-vibration designation does not alter capacitance, voltage rating, or impedance characteristics.

Q: Why does AFK157M2AP44T-F have a different land size?

A: The AFK157M2AP44T-F has a surface mount land size of 17.00mm x 19.00mm, compared to 17.10mm x 17.10mm for the original part. This 2.00mm difference in width requires PCB layout verification to ensure the component footprint aligns with the design. The difference does not affect electrical performance.

Q: Are all substitute parts suitable for automotive applications?

A: Yes. All substitute parts carry AEC-Q200 qualification and are rated for automotive use. The UCD2A151MNJ1MS, EEE-FK2A151AM, EEV-FK2A151V, and AFK157M2AP44T-F are all approved for automotive applications with identical operating temperature ranges (-55°C ~ 105°C) and lifetime ratings.

Q: What is the impact of higher ripple current ratings in substitute parts?

A: The Panasonic and CDE alternatives support 594.8 mA ripple current at 120 Hz, compared to 396.5 mA for the UCD2A151MNJ1MS. Higher ripple current capability indicates improved thermal performance and lower heat generation under AC stress. This represents an enhancement, not a limitation, and does not restrict substitution.

Q: Can these parts be used interchangeably on the same PCB?

A: Physical compatibility depends on PCB footprint design. The UCD2A151MNJ1MS and Panasonic parts (EEE-FK2A151AM, EEV-FK2A151V) have compatible land sizes (17.10mm and 17.00mm respectively). The AFK157M2AP44T-F requires verification due to its 19.00mm width. All parts share the same 16.00mm diameter and similar heights, supporting mechanical interchangeability in most designs.