UPM1V121MPD Equivalent & Substitute Parts

Part Overview

The UPM1V121MPD is a 120 µF, 35 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for automotive applications with AEC-Q200 compliance and offers a 3000-hour lifetime at 105°C. The part carries a "Not For New Designs" status, making identification of equivalent and substitute parts essential for ongoing production support and design transitions.

Substiute Parts

UPM1V121MPD

NichiconIn Stock: 2849UPM1V121MPD Datasheet

Current PartRFQ

UPJ1V121MPD

NichiconIn Stock: 2841UPJ1V121MPD Datasheet

DirectRFQ

127KXM050M

Cornell Dubilier / Illinois CapacitorIn Stock: 5055127KXM050M Datasheet

UpgradeRFQ

EEU-FC1V121

Panasonic Electronic ComponentsIn Stock: 7280EEU-FC1V121 Datasheet

SimilarRFQ

EEU-FC1V121B

Panasonic Electronic ComponentsIn Stock: 2994EEU-FC1V121B Datasheet

SimilarRFQ

EEU-FC1V121BJ

Panasonic Electronic ComponentsIn Stock: 1012EEU-FC1V121BJ Datasheet

SimilarRFQ

ELXY350ELL121MH12D

Chemi-ConIn Stock: 988ELXY350ELL121MH12D Datasheet

SimilarRFQ

ELXY350ELL121MJC5S

Chemi-ConIn Stock: 2840ELXY350ELL121MJC5S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UPM1V121MPD is determined by the following critical parameters:

• Electrical Match: Capacitance (120 µF), voltage rating (35 V minimum), and tolerance (±20%)
• Thermal Performance: Lifetime rating at 105°C (3000 hours minimum)
• Environmental Compliance: Operating temperature range (-55°C ~ 105°C), RoHS3 compliance
• Physical Compatibility: Radial, can package; through-hole mounting; lead spacing and case dimensions must accommodate PCB layout
• Automotive Certification: AEC-Q200 rating where required for automotive applications

Substitute parts are grouped into two categories:

Direct Equivalents maintain identical electrical and mechanical specifications with minimal variation in impedance or ripple current handling.

Upgrade Alternatives provide enhanced performance characteristics (higher voltage rating, extended lifetime, or improved ripple current capacity) while maintaining backward compatibility with the original application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

EEU-FC1V121BJ and ELXY350ELL121MH12D are the primary candidates for direct substitution. Both maintain 120 µF capacitance, 35 V voltage rating, and AEC-Q200 automotive certification. EEU-FC1V121BJ offers active product status with established supply chain availability. ELXY350ELL121MH12D provides equivalent electrical performance with extended 3000-hour lifetime matching the original part.

For Enhanced Performance (Upgrade Path)

ELXY350ELL121MJC5S provides superior performance with 5000-hour lifetime at 105°C, improved impedance (120 mOhms), and enhanced ripple current capacity. This part is suitable for applications requiring extended operational life or higher reliability margins. Lead spacing differs at 0.197" (5.00mm), requiring PCB layout verification.

127KXM050M offers increased voltage headroom at 50 V while maintaining 120 µF capacitance and 3000-hour lifetime. This upgrade is applicable where circuit design permits higher voltage rating and provides additional safety margin in voltage transient scenarios.

Compliance Considerations

All recommended substitutes maintain ROHS3 compliance. For automotive applications, prioritize parts with AEC-Q200 certification: EEU-FC1V121, EEU-FC1V121B, EEU-FC1V121BJ, ELXY350ELL121MH12D, and ELXY350ELL121MJC5S.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1V121B replace UPM1V121MPD directly on the PCB?

A: Electrical substitution is valid (120 µF, 35 V, ±20% tolerance, AEC-Q200). However, lead spacing differs: EEU-FC1V121B uses 0.197" (5.00mm) spacing versus the original 0.138" (4.60mm). PCB footprint modification is required.

Q: What is the difference between EEU-FC1V121 and EEU-FC1V121B?

A: Both are Panasonic FC series with identical electrical ratings. EEU-FC1V121 has 0.138" lead spacing and 0.453" height. EEU-FC1V121B has 0.197" lead spacing and 0.650" height. Selection depends on available PCB layout space.

Q: Why does ELXY350ELL121MJC5S have different dimensions?

A: ELXY350ELL121MJC5S is a higher-performance variant with 5000-hour lifetime (versus 3000 hours). The larger case diameter (0.394" versus 0.315") accommodates enhanced internal construction. Verify PCB clearance before selection.

Q: Is UPJ1V121MPD a suitable replacement?

A: UPJ1V121MPD matches electrical specifications (120 µF, 35 V, 3000-hour lifetime) but lacks AEC-Q200 certification and has higher impedance (220 mOhms versus 140 mOhms). Use only in non-automotive applications or where automotive certification is not required.

Q: Can 127KXM050M be used in place of UPM1V121MPD?

A: Yes, with design verification. The 50 V rating provides voltage margin above the 35 V requirement. Electrical performance is compatible (120 µF, ±20% tolerance, 3000-hour lifetime). Confirm circuit design permits the higher voltage rating.

Q: What is the impact of different impedance values on circuit performance?

A: Impedance affects ripple current handling and transient response. Lower impedance (ELXY350ELL121MJC5S at 120 mOhms) provides better high-frequency filtering. Higher impedance (UPJ1V121MPD at 220 mOhms) may impact performance in noise-sensitive circuits. Verify application requirements before selection.

Q: Are all substitute parts in active production?

A: EEU-FC1V121, EEU-FC1V121B, EEU-FC1V121BJ, ELXY350ELL121MH12D, ELXY350ELL121MJC5S, and 127KXM050M are active products. UPM1V121MPD and UPJ1V121MPD are not recommended for new designs. For new designs, select from active product alternatives.