UCD2A151MNJ1MS Equivalent & Substitute Parts

Part Overview

The UCD2A151MNJ1MS is a 150 µF, 100 V aluminum electrolytic capacitor manufactured by Nichicon in surface mount radial can package. This component is rated for automotive applications with AEC-Q200 qualification and delivers 5000 hours lifetime at 105°C operating temperature. The part maintains active product status with 909 units in current inventory. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements in automotive and industrial circuits requiring stable capacitance and ripple current handling.

Substiute Parts

UCD2A151MNJ1MS

NichiconIn Stock: 1004UCD2A151MNJ1MS Datasheet

Current PartRFQ

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:

Mandatory Matching Parameters:

• Capacitance: 150 µF
• Tolerance: ±20%
• Voltage Rating: 100 V
• Lifetime: 5000 Hrs @ 105°C
• Operating Temperature: -55°C to 105°C
• Polarization: Polar
• Mounting Type: Surface Mount
• Package Type: Radial, Can - SMD
• AEC-Q200 Automotive Rating
• RoHS3 Compliance

Allowable Variation Parameters:

• Ripple Current @ 120 Hz: 396.5 to 594.8 mA (substitute may equal or exceed main part)
• Ripple Current @ 100 kHz: 793 mA (fixed across all parts)
• Height - Seated (Max): 0.669" to 0.689" (17.00 to 17.50 mm)
• Surface Mount Land Size: Minor dimensional tolerance within PCB design margins
• ESR / Impedance: Provided when available; not a disqualifying factor

The identified substitute parts meet all mandatory parameters and maintain compatibility with automotive circuit requirements and thermal management specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—UCD2A151MNJ1MS, EEV-FK2A151V, and AFK157M2AP44T-F—are active products with full AEC-Q200 automotive qualification and ROHS3 compliance. Selection between these parts is based on the following engineering criteria:

UCD2A151MNJ1MS (Nichicon UCD Series): Use as primary selection when bulk packaging is acceptable and maximum inventory availability is required. This part supports 396.5 mA ripple current at 120 Hz, meeting baseline automotive circuit requirements.

EEV-FK2A151V (Panasonic FK Series, Anti-Vibration): Select when enhanced ripple current performance at low frequency (594.8 mA @ 120 Hz) is required and tape & reel packaging is specified for automated assembly. The FK series anti-vibration designation indicates mechanical robustness for high-vibration automotive environments. Moisture sensitivity level 1 (Unlimited) provides superior moisture handling compared to the main part.

AFK157M2AP44T-F (Cornell Dubilier AFK Series): Choose when identical ripple current performance (594.8 mA @ 120 Hz) and documented ESR specification (170 mOhm @ 100 kHz) are required for precision circuit design. Tape & reel packaging supports high-volume production. Surface mount land size of 0.669" L x 0.748" W accommodates wider PCB pad layouts.

All three parts maintain identical thermal lifetime (5000 Hrs @ 105°C), operating temperature range (-55°C to 105°C), and voltage rating (100 V). Height variation (0.669" to 0.689") is within standard PCB clearance tolerances for surface mount assembly.

Frequently Asked Questions (FAQ)

Q: Can EEV-FK2A151V or AFK157M2AP44T-F be used as direct replacements for UCD2A151MNJ1MS in existing designs?

A: Yes. Both substitute parts match all mandatory electrical parameters: 150 µF capacitance, ±20% tolerance, 100 V rating, 5000 Hrs @ 105°C lifetime, and -55°C to 105°C operating range. Physical dimensions (0.630" diameter, 0.669" to 0.689" height) are compatible with existing PCB layouts. AEC-Q200 and ROHS3 compliance are maintained across all three parts.

Q: What is the difference in ripple current handling between the main part and substitutes?

A: The UCD2A151MNJ1MS supports 396.5 mA ripple current at 120 Hz. Both EEV-FK2A151V and AFK157M2AP44T-F support 594.8 mA at 120 Hz, representing a 50% increase in low-frequency ripple current capacity. All three parts deliver identical 793 mA ripple current at 100 kHz. Higher ripple current capability in substitute parts does not create incompatibility; it provides additional design margin for circuits with elevated AC current stress.

Q: Are there packaging considerations when switching between these parts?

A: The UCD2A151MNJ1MS is supplied in bulk packaging. EEV-FK2A151V and AFK157M2AP44T-F are supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly. If manual assembly or bulk component handling is required, the main part packaging is preferred. For high-volume production, tape & reel packaging of substitute parts reduces handling labor and improves placement accuracy.

Q: What is the significance of the Panasonic FK series "Anti-Vibration" designation?

A: The anti-vibration designation indicates mechanical design optimization for high-vibration automotive environments. This does not alter electrical performance but confirms structural robustness for applications subject to engine vibration, road shock, or mechanical stress. The EEV-FK2A151V maintains identical electrical specifications while providing enhanced mechanical reliability in demanding automotive installations.

Q: How do ESR and impedance specifications affect part selection?

A: The UCD2A151MNJ1MS does not provide ESR specification. Both EEV-FK2A151V and AFK157M2AP44T-F specify 170 mOhms impedance at 100 kHz. Lower ESR reduces heat generation and improves transient response in high-frequency switching circuits. If circuit design requires documented ESR performance, select EEV-FK2A151V or AFK157M2AP44T-F. If ESR is not a design constraint, all three parts are functionally equivalent.

Q: Are there REACH or environmental compliance differences between these parts?

A: The UCD2A151MNJ1MS is REACH Affected. Both EEV-FK2A151V and AFK157M2AP44T-F are REACH Unaffected. All three parts are ROHS3 Compliant. For applications requiring REACH Unaffected status, select Panasonic or Cornell Dubilier substitutes. For standard automotive applications, REACH Affected status does not restrict use.

Q: What is the moisture sensitivity level (MSL) difference?

A: The UCD2A151MNJ1MS lists MSL as Not Applicable. Both EEV-FK2A151V and AFK157M2AP44T-F specify MSL 1 (Unlimited), indicating superior moisture resistance and extended shelf life without desiccant packaging. For long-term storage or humid environment applications, substitute parts with MSL 1 provide extended component reliability.

Q: Can surface mount land size differences affect PCB design?

A: The UCD2A151MNJ1MS requires 0.673" L x 0.673" W (17.10 x 17.10 mm) land pattern. EEV-FK2A151V requires 0.669" L x 0.669" W (17.00 x 17.00 mm). AFK157M2AP44T-F requires 0.669" L x 0.748" W (17.00 x 19.00 mm). These variations are within standard PCB design tolerance. If PCB layout is already fixed with the main part footprint, EEV-FK2A151V is the closest match. AFK157M2AP44T-F requires wider pad spacing in one axis and may require PCB layout modification.