Equivalent & Substitute Parts for UPH2G121MHD

Part Overview

The UPH2G121MHD is a 120 µF, 400 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Active and designed for general-purpose applications requiring reliable energy storage and filtering in power supply circuits. The UPH series offers a 2000-hour lifetime rating at 105°C, making it suitable for standard industrial and consumer electronics applications. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package dimensions, lead spacing, mounting type).

Key Parameters

Parameter	Value
Capacitance	120 µF
Voltage Rating	400 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Diameter	0.630" (16.00 mm)
Height (Max)	1.476" (37.50 mm)
Mounting Type	Through Hole
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UPH2G121MHD is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 120 µF (exact match required)
Voltage Rating: 400 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.295" (7.50 mm) (exact match required)
Diameter: 0.630" (16.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)

Secondary Compatibility Parameters:

Height variation within PCB layout constraints
Operating temperature range (minimum -25°C, maximum 105°C)
Ripple current ratings at specified frequencies
Lifetime rating at 105°C
Regulatory compliance (RoHS, REACH, ECCN)

All identified substitute parts meet the primary matching parameters. Variations in secondary parameters are noted to support engineering selection based on application requirements.

Parameter Comparison

Parameter	UPH2G121MHD (Nichicon)	UCP2G121MHD (Nichicon)	400BXW120MEFR16X35 (Rubycon)	EPAG401ELL121ML35S (Chemi-Con)
Capacitance	120 µF	120 µF	120 µF	120 µF
Voltage Rating	400 V	400 V	400 V	400 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	2000 Hrs	10000 Hrs	12000 Hrs	2000 Hrs
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-40°C to 105°C	-40°C to 105°C
Ripple Current @ 120 Hz	800 mA	800 mA	810 mA	670 mA
Ripple Current @ 100 kHz	1.2 A	1.2 A	1.823 A	1.005 A
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height (Max)	1.476" (37.50 mm)	1.476" (37.50 mm)	1.457" (37.00 mm)	1.457" (37.00 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

UCP2G121MHD (Nichicon) — Direct equivalent with extended lifetime. This part maintains identical electrical and mechanical specifications to the UPH2G121MHD while offering a 10000-hour lifetime rating at 105°C compared to 2000 hours. Both parts are ROHS3 compliant and REACH unaffected. Selection of UCP2G121MHD is appropriate for applications requiring extended operational life without design modification.

400BXW120MEFR16X35 (Rubycon) — Upgrade option with enhanced performance. This part provides the highest lifetime rating (12000 hours at 105°C) and superior ripple current handling at high frequency (1.823 A @ 100 kHz). Operating temperature range extends to -40°C. Height is reduced by 0.019" (0.50 mm), which may provide layout advantages. ROHS3 compliant and REACH unaffected.

EPAG401ELL121ML35S (Chemi-Con) — Functional equivalent with extended temperature range. This part matches the 2000-hour lifetime of the UPH2G121MHD and extends the lower operating temperature limit to -40°C. Height is reduced by 0.019" (0.50 mm). Ripple current ratings are lower than the primary part. RoHS compliant (standard) and REACH unaffected. Moisture Sensitivity Level is rated 1 (Unlimited).

All substitute parts are Active products with current manufacturing status and meet the regulatory requirements specified for the original component.

Frequently Asked Questions (FAQ)

Q: Can UCP2G121MHD be used as a direct replacement for UPH2G121MHD?

A: Yes. Both parts share identical capacitance (120 µF), voltage rating (400 V), tolerance (±20%), package dimensions, lead spacing, and mounting type. The UCP2G121MHD offers extended lifetime (10000 hours vs. 2000 hours at 105°C) with no design changes required.

Q: What is the primary difference between the Nichicon UPH and UCP series?

A: The UCP series provides a 5x longer lifetime rating at 105°C (10000 hours) compared to the UPH series (2000 hours). Electrical and mechanical specifications remain identical.

Q: Is the Rubycon 400BXW120MEFR16X35 physically compatible with the original design?

A: Yes, with a minor height reduction. The 400BXW120MEFR16X35 is 0.019" (0.50 mm) shorter than the UPH2G121MHD (1.457" vs. 1.476" maximum height). All other dimensions, lead spacing, and mounting type are identical. Verify PCB layout clearance before substitution.

Q: Does the Chemi-Con EPAG401ELL121ML35S require any design considerations?

A: The EPAG401ELL121ML35S is mechanically and electrically compatible. It extends the lower operating temperature to -40°C and reduces height by 0.019" (0.50 mm). Ripple current ratings are lower than the original part; verify application requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. UCP2G121MHD and 400BXW120MEFR16X35 are ROHS3 compliant. EPAG401ELL121ML35S is RoHS compliant. All parts are REACH unaffected.

Q: Which substitute part offers the best performance upgrade?

A: The Rubycon 400BXW120MEFR16X35 provides the highest lifetime rating (12000 hours at 105°C) and superior ripple current handling at high frequency (1.823 A @ 100 kHz), along with extended low-temperature operation (-40°C).

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