ULD2G3R3MPD Equivalent & Substitute Parts

Part Overview

The ULD2G3R3MPD is a 3.3 µF, 400 V aluminum electrolytic capacitor in radial can package manufactured by Nichicon. This component is classified as "Not For New Designs," indicating it has been superseded in Nichicon's product line. For applications requiring this capacitor specification, equivalent substitute parts from active product lines are available to ensure design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Capacitance	3.3 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime @ Temperature	15000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ULD2G3R3MPD are qualified based on the following electrical and mechanical parameters:

Capacitance Value: 3.3 µF (exact match required)
Voltage Rating: 400 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime Rating: 15000 Hrs @ 105°C (exact match required)
Operating Temperature Range: -40°C ~ 105°C (exact match required)
Package Configuration: Radial, Can with Through Hole mounting
Lead Spacing: 0.138" (4.60 mm) (exact match required)
Polarization: Polar (exact match required)

Two substitute parts from Rubycon's active LLE series meet these criteria: 400LLE3.3MEFC8X11.5 and 400LLE3R3MEFC8X11.5. Both maintain electrical equivalence and physical compatibility with the original ULD2G3R3MPD specification.

Parameter Comparison

Parameter	ULD2G3R3MPD (Nichicon)	400LLE3.3MEFC8X11.5 (Rubycon)	400LLE3R3MEFC8X11.5 (Rubycon)
Capacitance	3.3 µF	3.3 µF	3.3 µF
Voltage Rating	400 V	400 V	400 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	15000 Hrs	15000 Hrs	15000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)
Size / Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)	0.315" (8.00 mm)
Height - Seated (Max)	0.531" (14.60 mm)	0.512" (13.00 mm)	0.512" (13.00 mm)
Package / Case	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active

Engineering Selection Recommendations

Both Rubycon LLE series substitutes (400LLE3.3MEFC8X11.5 and 400LLE3R3MEFC8X11.5) are functionally equivalent to the ULD2G3R3MPD and maintain full electrical and mechanical compatibility. The primary advantage of these substitutes is their active product status, ensuring long-term availability and supply chain continuity.

The 400LLE3R3MEFC8X11.5 variant offers significantly higher inventory availability (223,420 units in stock) compared to the 400LLE3.3MEFC8X11.5 variant (1,133 units in stock), making it the preferred choice for volume applications and future procurement planning.

Both substitute parts are ROHS3 compliant and carry the same ECCN and HTSUS classifications as the original part, ensuring regulatory and compliance alignment.

Frequently Asked Questions (FAQ)

Q: Can the Rubycon LLE series parts directly replace the Nichicon ULD2G3R3MPD?

A: Yes. Both 400LLE3.3MEFC8X11.5 and 400LLE3R3MEFC8X11.5 are direct electrical and mechanical equivalents. They share identical capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, lead spacing, and package configuration. The height difference (0.512" vs. 0.531") is within acceptable PCB layout tolerances for through-hole radial capacitors.

Q: What is the significance of the "Not For New Designs" status on the ULD2G3R3MPD?

A: This designation indicates that Nichicon has discontinued active development and promotion of this part number. Existing inventory may be available, but the manufacturer recommends using active alternatives for new designs. The Rubycon LLE series substitutes are active products with ongoing manufacturer support.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: No. All three parts are ROHS3 compliant and share identical ECCN (EAR99) and HTSUS (8532.22.0020) classifications. The substitutes are REACH Unaffected, while the original part is REACH Affected, which may be advantageous for certain supply chain requirements.

Q: How do the ripple current ratings compare?

A: The ULD2G3R3MPD specifies ripple current ratings of 47 mA @ 120 Hz and 94 mA @ 100 kHz. The 400LLE3.3MEFC8X11.5 specifies 47 mA @ 120 Hz. The 400LLE3R3MEFC8X11.5 does not provide ripple current specifications in the available data. For applications with specific ripple current requirements, the 400LLE3.3MEFC8X11.5 is the recommended choice.

Q: What is the difference between 400LLE3.3MEFC8X11.5 and 400LLE3R3MEFC8X11.5?

A: Both parts are electrically identical 3.3 µF, 400 V aluminum electrolytic capacitors from Rubycon's LLE series. The primary differences are inventory availability and ripple current documentation. The 400LLE3R3MEFC8X11.5 has substantially higher stock levels, making it suitable for high-volume applications.

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