UPJ1V121MPD Equivalent & Substitute Parts

Part Overview

The UPJ1V121MPD is a 120 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is classified as Not For New Designs. Due to this obsolescence status, equivalent and substitute parts from active manufacturers are necessary for ongoing production and maintenance applications requiring 120 µF capacitance at 35 V with compatible mechanical and electrical characteristics.

Key Parameters

Parameter	Value
Capacitance	120 µF
Voltage Rating	35 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60mm)
Diameter	0.315" (8.00mm)
Height	0.630" (16.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Substitution Criteria (Direct Equivalents):

Capacitance: 120 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.138" (4.60mm) (exact match required)
Diameter: 0.315" (8.00mm) (exact match required)

Secondary Substitution Criteria (Compatible Variants):

Operating Temperature Range: -55°C to 105°C (exact match required)
RoHS Status: ROHS3 Compliant (required for regulatory compliance)
Lifetime @ 105°C: 3000 Hrs minimum (equal or greater acceptable)

Allowable Variations:

Height: Variations permitted within mechanical envelope constraints
Impedance: Variations permitted based on manufacturer design
Ripple Current: Variations permitted if application requirements are met
Packaging Format: Bulk or Cut Tape acceptable for equivalent functionality
Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters align

Parts are grouped as Direct Equivalents (identical packaging and lead spacing) or Similar Equivalents (minor dimensional variations that do not affect PCB mounting compatibility).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Impedance	Product Status	Packaging
UPJ1V121MPD	Nichicon	120 µF	35 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.630" (16.00mm)	220 mOhms	Not For New Designs	Bulk
UPJ1V121MPD1TD	Nichicon	120 µF	35 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.630" (16.00mm)	220 mOhms	Not For New Designs	Cut Tape (CT)
UPM1V121MPD	Nichicon	120 µF	35 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	140 mOhms	Not For New Designs	Bulk
127KXM050M	Cornell Dubilier / Illinois Capacitor	120 µF	50 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	180 mOhms	Active	Bulk
EEU-FC1V121	Panasonic Electronic Components	120 µF	35 V	±20%	2000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	117 mOhms	Active	Bulk
EEU-FC1V121B	Panasonic Electronic Components	120 µF	35 V	±20%	2000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	117 mOhms	Active	Cut Tape (CT)
EEU-FC1V121BJ	Panasonic Electronic Components	120 µF	35 V	±20%	2000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.492" (12.50mm)	117 mOhms	Active	Cut Tape (CT)
ELXY350ELL121MH12D	Chemi-Con	120 µF	35 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.531" (14.60mm)	170 mOhms	Active	Bulk
ELXY350ELL121MJC5S	Chemi-Con	120 µF	35 V	±20%	5000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	120 mOhms	Active	Bulk

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical and Mechanical Specifications):

UPJ1V121MPD1TD is a direct equivalent available in Cut Tape packaging. Both parts share identical electrical parameters and mechanical dimensions, differing only in packaging format. Selection between Bulk and Cut Tape depends on assembly process requirements.

Compatible Substitutes (Active Product Status):

EEU-FC1V121BJ (Panasonic) and ELXY350ELL121MH12D (Chemi-Con) are active products meeting all primary substitution criteria with identical lead spacing and diameter. Both are AEC-Q200 rated for automotive applications. Height variations (0.492" and 0.531" respectively versus 0.630" original) are acceptable for through-hole mounting if PCB layout permits. Lifetime at 105°C is 2000 hours and 3000 hours respectively, compared to 3000 hours for the original part.

Upgraded Voltage Alternative:

127KXM050M (Cornell Dubilier / Illinois Capacitor) provides 50 V rating with identical 120 µF capacitance and 3000-hour lifetime. This part is suitable for applications where higher voltage margin is required. Lead spacing and diameter match the original specification. Product status is Active.

Extended Lifetime Option:

ELXY350ELL121MJC5S (Chemi-Con) offers 5000-hour lifetime at 105°C, exceeding the original 3000-hour specification. This part has different lead spacing (0.197" versus 0.138") and larger diameter (0.394" versus 0.315"), requiring PCB layout verification before substitution.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant. Panasonic and Chemi-Con parts carry AEC-Q200 automotive qualification. Selection should prioritize active product status parts (Panasonic FC series, Chemi-Con LXY series, Cornell Dubilier KXM series) over obsolete Nichicon UPJ and UPM series for new designs and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1V121B be used as a direct replacement for UPJ1V121MPD?

A: EEU-FC1V121B meets all electrical specifications (120 µF, 35 V, ±20%, 2000 Hrs @ 105°C) but has different lead spacing (0.197" versus 0.138") and identical diameter. PCB layout must accommodate the wider lead spacing. Height is 0.650" versus 0.630" original, which is acceptable for through-hole mounting.

Q: What is the difference between UPJ1V121MPD and UPJ1V121MPD1TD?

A: Both parts are electrically and mechanically identical. The difference is packaging format: UPJ1V121MPD is supplied in Bulk, while UPJ1V121MPD1TD is supplied in Cut Tape (CT). Selection depends on assembly equipment compatibility and handling requirements.

Q: Is 127KXM050M a suitable substitute if my circuit operates at 35 V?

A: Yes. 127KXM050M is rated for 50 V, which exceeds the 35 V requirement. Higher voltage rating provides additional safety margin without affecting circuit operation at 35 V. All other electrical parameters (120 µF, ±20%, 3000 Hrs @ 105°C) and mechanical dimensions match the original specification.

Q: Why does ELXY350ELL121MJC5S have different dimensions?

A: ELXY350ELL121MJC5S is designed with a larger can diameter (0.394" versus 0.315") and different lead spacing (0.197" versus 0.138") to accommodate its extended 5000-hour lifetime rating. These dimensional changes require PCB layout verification before substitution.

Q: Which substitute part has the best long-term availability?

A: Panasonic EEU-FC series (EEU-FC1V121, EEU-FC1V121B, EEU-FC1V121BJ) and Chemi-Con LXY series (ELXY350ELL121MH12D, ELXY350ELL121MJC5S) are all Active products with established supply chains. Nichicon UPJ and UPM series are classified as Not For New Designs and should not be selected for new applications.

Q: Can I use EEU-FC1V121 in place of EEU-FC1V121B?

A: Both parts are electrically identical (120 µF, 35 V, ±20%, 2000 Hrs @ 105°C, AEC-Q200). EEU-FC1V121 has lead spacing of 0.138" and height of 0.453", while EEU-FC1V121B has lead spacing of 0.197" and height of 0.650". PCB layout must accommodate the specific lead spacing and height of the selected variant.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference are ROHS3 compliant. Panasonic and Chemi-Con parts also carry AEC-Q200 automotive qualification, suitable for automotive and industrial applications requiring enhanced reliability standards.

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