UPM1J121MHD6TO Equivalent & Substitute Parts

Part Overview

The UPM1J121MHD6TO is a 120 µF, 63 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for automotive applications with AEC-Q200 compliance and features a 5000-hour lifetime at 105°C. The part is designated as "Not For New Designs," indicating its legacy status in Nichicon's product portfolio. Finding equivalent substitute parts is necessary for applications requiring continued supply, design flexibility, or inventory optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	120 µF
Voltage Rating	63 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Ripple Current @ 120 Hz	510 mA
Ripple Current @ 10 kHz	750 mA
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Mounting Type	Through Hole Radial
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UPM1J121MHD6TO is determined by strict alignment of the following electrical and mechanical parameters:

Capacitance Value: 120 µF (exact match required)
Voltage Rating: 63 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.492" (12.50 mm) (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Package Type: Radial, Can (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Lifetime @ 105°C: 5000 Hrs (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

The UPJ1J121MHD6TO meets all substitution criteria. Both parts are manufactured by Nichicon and share identical electrical ratings, physical dimensions, and environmental specifications. The primary difference lies in application classification (automotive vs. general purpose) and impedance characteristics, which do not affect functional interchangeability in the specified electrical parameters.

Parameter Comparison

Parameter	UPM1J121MHD6TO (Main)	UPJ1J121MHD6TO (Substitute)
Manufacturer	Nichicon	Nichicon
Series	UPM	UPJ
Capacitance	120 µF	120 µF
Voltage Rating	63 V	63 V
Tolerance	±20%	±20%
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C
Lifetime @ 105°C	5000 Hrs	5000 Hrs
Ripple Current @ 120 Hz	510 mA	510 mA
Ripple Current @ 10 kHz	750 mA	750 mA
Impedance	120 mOhms	180 mOhms
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)	0.492" (12.50 mm)
Height (Seated Max)	0.669" (17.00 mm)	0.650" (16.50 mm)
Mounting Type	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

Both the UPM1J121MHD6TO and UPJ1J121MHD6TO are designated "Not For New Designs" by Nichicon, indicating legacy product status. Selection between these parts should be based on:

Compliance Requirements: The UPM1J121MHD6TO carries AEC-Q200 automotive qualification, while the UPJ1J121MHD6TO is rated for general purpose applications. Applications requiring automotive-grade certification must use the UPM series.

Impedance Characteristics: The UPM1J121MHD6TO exhibits 120 mOhms impedance compared to 180 mOhms for the UPJ1J121MHD6TO. In high-frequency ripple current applications, the lower impedance of the UPM series provides superior performance.

Physical Clearance: The UPJ1J121MHD6TO has a maximum seated height of 0.650" (16.50 mm) versus 0.669" (17.00 mm) for the UPM1J121MHD6TO. Applications with tight vertical space constraints may benefit from the UPJ variant.

Inventory Availability: Current stock levels should be evaluated for supply chain continuity. The UPJ1J121MHD6TO currently maintains higher inventory (2045 pcs) compared to the UPM1J121MHD6TO (1238 pcs).

Frequently Asked Questions (FAQ)

Q: Can the UPJ1J121MHD6TO replace the UPM1J121MHD6TO in automotive applications?

A: The UPJ1J121MHD6TO shares identical electrical and mechanical specifications with the UPM1J121MHD6TO. However, the UPJ series lacks AEC-Q200 automotive certification. Replacement is permissible only in applications where automotive qualification is not a contractual or regulatory requirement.

Q: What is the significance of the impedance difference between these parts?

A: The UPM1J121MHD6TO operates at 120 mOhms while the UPJ1J121MHD6TO operates at 180 mOhms. This 60 mOhms difference affects high-frequency performance and ripple current handling. For applications sensitive to impedance characteristics, the lower impedance UPM series is preferred.

Q: Are the physical dimensions identical between these parts?

A: Case diameter and lead spacing are identical (0.492" and 0.197" respectively). The seated height differs by 0.019" (0.50 mm), with the UPJ1J121MHD6TO being slightly shorter. Both parts fit standard 5.00 mm lead spacing footprints.

Q: What does "Not For New Designs" mean for both parts?

A: Both the UPM and UPJ series are legacy products. Nichicon recommends evaluating current-generation alternatives for new designs. Existing designs may continue using these parts for production and maintenance purposes.

Q: Are both parts RoHS compliant?

A: Yes, both the UPM1J121MHD6TO and UPJ1J121MHD6TO are ROHS3 compliant. The UPM1J121MHD6TO is REACH Affected, while the UPJ1J121MHD6TO is REACH Unaffected.

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