ULD2G8R2MPD Equivalent & Substitute Parts

Part Overview

The ULD2G8R2MPD is an 8.2 µF, 400 V aluminum electrolytic capacitor in radial through-hole configuration manufactured by Nichicon. This component is rated for 20,000 hours at 105°C and is designed for general-purpose applications requiring stable capacitance and ripple current handling in power supply and filtering circuits. The part carries a "Not For New Designs" status, making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Capacitance	8.2 µF
Tolerance	±20%
Voltage - Rated	400 V
Lifetime @ Temperature	20,000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Ripple Current @ 120 Hz	88 mA
Ripple Current @ 100 kHz	167.2 mA
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height - Seated (Max)	0.709" (18.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
Polarization	Polar

Substitute Part Grouping Explanation

Substitution of the ULD2G8R2MPD is determined by strict equivalence across the following critical parameters:

Capacitance Value: 8.2 µF (exact match required)
Voltage Rating: 400 V (minimum acceptable rating)
Tolerance: ±20% (matching tolerance band)
Lifetime Rating: 20,000 Hrs @ 105°C (thermal endurance specification)
Operating Temperature Range: -40°C ~ 105°C (environmental compatibility)
Mounting Configuration: Through-hole radial can package
Lead Spacing: 0.197" (5.00 mm) (PCB footprint compatibility)
Physical Dimensions: 0.394" diameter, maximum height 0.709" (spatial constraints)

The EKXF401ELL8R2MJ16S from Chemi-Con meets all substitution criteria with identical electrical specifications and compatible mechanical dimensions, with a marginal height reduction (0.689" vs. 0.709") that presents no compatibility issues for standard PCB layouts.

Parameter Comparison

Parameter	ULD2G8R2MPD (Nichicon)	EKXF401ELL8R2MJ16S (Chemi-Con)	Match Status
Capacitance	8.2 µF	8.2 µF	Exact
Tolerance	±20%	±20%	Exact
Voltage - Rated	400 V	400 V	Exact
Lifetime @ Temperature	20,000 Hrs @ 105°C	20,000 Hrs @ 105°C	Exact
Operating Temperature Range	-40°C ~ 105°C	-40°C ~ 105°C	Exact
Ripple Current @ 120 Hz	88 mA	88 mA	Exact
Ripple Current @ 100 kHz	167.2 mA	220 mA	Compatible (higher capacity)
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	Exact
Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	Exact
Height - Seated (Max)	0.709" (18.00 mm)	0.689" (17.50 mm)	Compatible (smaller)
Mounting Type	Through Hole	Through Hole	Exact
Package / Case	Radial, Can	Radial, Can	Exact
Polarization	Polar	Polar	Exact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact
ECCN	EAR99	EAR99	Exact
HTSUS	8532.22.0020	8532.22.0020	Exact

Engineering Selection Recommendations

The EKXF401ELL8R2MJ16S is a direct functional equivalent to the ULD2G8R2MPD. Selection between these parts should be based on the following factors:

Product Status: The ULD2G8R2MPD carries "Not For New Designs" status, indicating Nichicon has discontinued active development for this part. The EKXF401ELL8R2MJ16S maintains "Active" status from Chemi-Con, ensuring ongoing availability and manufacturing support for new production runs and long-term supply chain stability.

Compliance & Certifications: Both parts are ROHS3 compliant and classified under identical ECCN (EAR99) and HTSUS (8532.22.0020) codes, ensuring regulatory equivalence for export and procurement purposes.

Ripple Current Performance: The EKXF401ELL8R2MJ16S delivers 220 mA ripple current at 100 kHz compared to 167.2 mA for the ULD2G8R2MPD, providing enhanced thermal margin in high-frequency switching applications without compromising circuit performance.

Physical Compatibility: The EKXF401ELL8R2MJ16S is 0.02" (0.5 mm) shorter in seated height, presenting no mechanical interference in standard PCB layouts and offering improved clearance in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the EKXF401ELL8R2MJ16S be used as a direct drop-in replacement for the ULD2G8R2MPD?

A: Yes. Both parts share identical capacitance (8.2 µF), voltage rating (400 V), tolerance (±20%), thermal lifetime (20,000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C), lead spacing (5.00 mm), and can diameter (10.00 mm). The EKXF401ELL8R2MJ16S is 0.5 mm shorter, which presents no compatibility issues for through-hole PCB mounting.

Q: Why is the ULD2G8R2MPD marked "Not For New Designs"?

A: This designation indicates that Nichicon has transitioned this part to end-of-life status and is not recommending it for new product development. The EKXF401ELL8R2MJ16S from Chemi-Con provides an active alternative with equivalent electrical performance and ongoing manufacturing support.

Q: Are there differences in ripple current handling between these parts?

A: The EKXF401ELL8R2MJ16S is rated for 220 mA ripple current at 100 kHz, compared to 167.2 mA for the ULD2G8R2MPD. This represents a 31% increase in high-frequency ripple current capacity, providing additional thermal margin in switching power supply applications. Both parts maintain identical 88 mA ripple current at 120 Hz.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the ULD2G8R2MPD and EKXF401ELL8R2MJ16S are ROHS3 compliant, carry EAR99 export classification, and are assigned identical HTSUS commodity codes (8532.22.0020). The EKXF401ELL8R2MJ16S is REACH Unaffected, while the ULD2G8R2MPD is REACH Affected; however, both are suitable for equivalent applications.

Q: What is the impact of the 0.5 mm height difference on PCB layout?

A: The EKXF401ELL8R2MJ16S seated height of 0.689" (17.50 mm) is 0.02" (0.5 mm) shorter than the ULD2G8R2MPD at 0.709" (18.00 mm). This reduction improves clearance in space-constrained designs and presents no mechanical interference for standard through-hole PCB layouts. Lead spacing and can diameter remain identical.

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