Equivalent & Substitute Parts for UPJ2A121MHD1TO

Part Overview

The UPJ2A121MHD1TO is a 120 µF, 100 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. For applications requiring continued supply or design updates, equivalent substitute parts with matching electrical and mechanical specifications are available from both Nichicon's active product series and alternative manufacturers.

Key Parameters

Parameter	Value
Capacitance	120 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.063" (27.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the UPJ2A121MHD1TO are qualified based on the following criteria:

Electrical Parameters (Must Match):

Capacitance: 120 µF
Voltage Rating: 100 V
Tolerance: ±20%
Lifetime @ Temperature: 5000 Hrs @ 105°C
Operating Temperature Range: -55°C ~ 105°C
Polarization: Polar

Mechanical Parameters (Must Match):

Package Type: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Size / Dimension: 0.492" Dia (12.50 mm)
Height - Seated (Max): 1.063" (27.00 mm)
Mounting Type: Through Hole

Compliance Parameters:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

All substitute parts listed meet these criteria and are direct functional replacements suitable for PCB integration without design modification.

Parameter Comparison

Parameter	UPJ2A121MHD1TO (Main)	UPM2A121MHD1TO (Substitute)	B41858C9127M8 (Substitute)
Manufacturer	Nichicon	Nichicon	EPCOS - TDK Electronics
Series	UPJ	UPM	B41858
Product Status	Not For New Designs	Active	Active
Capacitance	120 µF	120 µF	120 µF
Voltage Rating	100 V	100 V	100 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar	Polar
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Impedance	130 mOhms	130 mOhms	188 mOhms
Ripple Current @ 120 Hz	519 mA	700 mA	-
Ripple Current @ 10 kHz	774 mA	1.04 A	-
Ripple Current @ 100 kHz	-	-	864 mA
ESR @ 10 kHz	-	-	204 mOhm

Engineering Selection Recommendations

UPM2A121MHD1TO (Nichicon): This part is the direct parametric equivalent from Nichicon's active product line. It maintains identical electrical and mechanical specifications to the UPJ2A121MHD1TO while offering Active product status, ensuring long-term availability and supply continuity. The UPM series is qualified for automotive applications (AEC-Q200), providing enhanced reliability certification. Ripple current performance exceeds the original specification across all frequency ranges.

B41858C9127M8 (EPCOS - TDK Electronics): This part provides equivalent electrical and mechanical performance from an alternative manufacturer. It meets all core substitution criteria and maintains ROHS3 and REACH compliance. The B41858 series is qualified for automotive applications. Impedance and ESR characteristics differ slightly but remain within acceptable parameters for general-purpose and automotive applications.

Both substitute parts are suitable for direct replacement in existing designs or new production requiring the UPJ2A121MHD1TO specification.

Frequently Asked Questions (FAQ)

Q: Can UPM2A121MHD1TO be used as a direct replacement for UPJ2A121MHD1TO?

A: Yes. Both parts share identical capacitance (120 µF), voltage rating (100 V), tolerance (±20%), lifetime (5000 Hrs @ 105°C), operating temperature range (-55°C ~ 105°C), and mechanical dimensions. The UPM2A121MHD1TO is a direct functional substitute with Active product status.

Q: What is the difference between the Nichicon UPM2A121MHD1TO and EPCOS B41858C9127M8?

A: Both parts meet the core electrical and mechanical requirements. The primary differences are manufacturer, series designation, and ripple current performance at specific frequencies. The UPM series offers higher ripple current capacity at 120 Hz and 10 kHz, while the B41858 provides specified performance at 100 kHz. Both are ROHS3 compliant and automotive-qualified.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. All substitute parts maintain identical lead spacing (0.197" / 5.00 mm), package dimensions (0.492" Dia / 12.50 mm), and height (1.063" / 27.00 mm). PCB footprints and mounting holes require no modification.

Q: Which substitute should be selected for new designs?

A: UPM2A121MHD1TO is recommended for new designs due to its Active product status from Nichicon, ensuring long-term availability and supply security. B41858C9127M8 is an alternative option if multi-source qualification is required.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All parts listed are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

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