ULD2E100MPD Equivalent & Substitute Parts

Part Overview

The ULD2E100MPD is a 10 µF, 250 V aluminum electrolytic capacitor in radial through-hole 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line.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 this capacitor specification, direct manufacturer equivalents and parametric substitutes are available from active product lines.

Key Parameters

Parameter	Value
Capacitance	10 µF
Voltage Rating	250 V
Tolerance	±20%
Lifetime @ Temperature	15000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.197" (5.00mm)
Case Diameter	0.394" (10.00mm)
Mounting Type	Through Hole Radial
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the ULD2E100MPD is determined by strict equivalence across the following electrical and mechanical parameters:

Capacitance: 10 µF (exact match required)
Voltage Rating: 250 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 15000 Hrs @ 105°C (exact match required)
Operating Temperature: -40°C ~ 105°C (exact match required)
Lead Spacing: 0.197" (5.00mm) (exact match required)
Case Diameter: 0.394" (10.00mm) (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Package Type: Radial, Can (exact match required)

Two substitute parts meet these criteria: EKXF251ELL100MJC5S (direct manufacturer equivalent from Chemi-Con) and 250LLE10MEFC10X12.5 (parametric equivalent from Rubycon).

Parameter Comparison

Parameter	ULD2E100MPD (Nichicon)	EKXF251ELL100MJC5S (Chemi-Con)	250LLE10MEFC10X12.5 (Rubycon)
Capacitance	10 µF	10 µF	10 µF
Voltage Rating	250 V	250 V	250 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	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Case Diameter	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Height (Seated Max)	0.571" (14.50mm)	0.551" (14.00mm)	0.571" (14.50mm)
Ripple Current @ 120 Hz	90 mA	90 mA	90 mA
Ripple Current @ 100 kHz	171 mA	225 mA	171 mA
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active

Engineering Selection Recommendations

Both substitute parts are suitable for applications currently using the ULD2E100MPD:

EKXF251ELL100MJC5S (Chemi-Con) is a direct manufacturer equivalent with active product status. This part is ROHS3 compliant and REACH unaffected. The seated height is 0.551" (14.00mm), which is 0.020" shorter than the original part. Ripple current capability at 100 kHz is 225 mA, exceeding the original specification of 171 mA.

250LLE10MEFC10X12.5 (Rubycon) is a parametric equivalent with active product status. This part is ROHS3 compliant and REACH unaffected. The seated height matches the original at 0.571" (14.50mm), and ripple current specifications are identical to the original part at 171 mA @ 100 kHz.

Both parts maintain identical electrical performance across capacitance, voltage rating, tolerance, lifetime, and operating temperature specifications. Selection between them depends on PCB layout constraints and height clearance requirements.

Frequently Asked Questions (FAQ)

Q: Can EKXF251ELL100MJC5S be used as a direct replacement for ULD2E100MPD?

A: Yes. Both parts share identical electrical specifications: 10 µF capacitance, 250 V voltage rating, ±20% tolerance, 15000 Hrs @ 105°C lifetime, and -40°C ~ 105°C operating temperature range. Lead spacing and case diameter are identical. The EKXF251ELL100MJC5S has a slightly shorter seated height of 0.551" versus 0.571" for the original part.

Q: What is the difference between the two substitute parts?

A: Both EKXF251ELL100MJC5S and 250LLE10MEFC10X12.5 meet all electrical and mechanical substitution criteria. The primary difference is seated height: EKXF251ELL100MJC5S measures 0.551" while 250LLE10MEFC10X12.5 measures 0.571". Additionally, EKXF251ELL100MJC5S provides higher ripple current capability at 100 kHz (225 mA versus 171 mA).

Q: Are these parts suitable for new designs?

A: Both substitute parts carry Active product status, making them appropriate for new designs. The original ULD2E100MPD is marked Not For New Designs and should not be specified for new applications.

Q: Do the substitute parts meet RoHS and REACH requirements?

A: Both EKXF251ELL100MJC5S and 250LLE10MEFC10X12.5 are ROHS3 compliant. EKXF251ELL100MJC5S is REACH unaffected. 250LLE10MEFC10X12.5 is REACH unaffected.

Q: Will these parts fit the same PCB footprint?

A: Yes. All three parts share identical lead spacing of 0.197" (5.00mm) and case diameter of 0.394" (10.00mm). Verify PCB height clearance, as EKXF251ELL100MJC5S has a maximum seated height of 0.551" compared to 0.571" for the other two parts.

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