UVR2E101MHD Equivalent & Substitute Parts

Part Overview

The UVR2E101MHD is a 100 µF, 250 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. The UVR series offers a 2000-hour lifetime rating at 85°C with general-purpose applications. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain inventory flexibility, and identify components with improved performance characteristics or extended operational lifespans.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage Rating	250 V
Tolerance	±20%
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Operating Temperature Range	-40°C ~ 85°C
Lifetime Rating	2000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UVR2E101MHD is determined by the following criteria:

Core Electrical Parameters (Non-Negotiable):

Capacitance: 100 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Voltage Rating Substitution Logic:

Direct substitutes: 250 V rated (same voltage class)
Upgrade substitutes: 350 V or higher (higher voltage rating provides margin; backward compatible in 250 V circuits)

Mechanical Compatibility:

Lead spacing: 0.295" (7.50 mm) - must match for PCB compatibility
Mounting type: Through Hole (radial configuration)
Package case: Radial, Can

Performance Considerations:

Lifetime rating: 2000 Hrs @ 85°C or higher
Operating temperature: -40°C ~ 85°C minimum; extended ranges acceptable
Ripple current ratings: Higher values indicate improved performance margin

Compliance & Status:

RoHS3 compliance required
Product status: Active preferred; Not For New Designs acceptable for legacy applications

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp	Lead Spacing	Size Dia	Height (Max)	Product Status	RoHS
UVR2E101MHD	Nichicon	100 µF	250 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.319" (34.60 mm)	Not For New Designs	ROHS3
UCY2V101MHD	Nichicon	100 µF	350 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.299" (33.00 mm)	Active	ROHS3
URS2E101MHD	Nichicon	100 µF	250 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.709" (18.00 mm)	1.043" (26.50 mm)	Active	ROHS3
UVK2E101MHD	Nichicon	100 µF	250 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.063" (27.00 mm)	Not For New Designs	ROHS3
ESMG251ELL101MLN3S	Chemi-Con	100 µF	250 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.299" (33.00 mm)	Active	ROHS3
420QXW100MEFR16X31.5	Rubycon	100 µF	420 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.319" (34.60 mm)	Active	ROHS3
B43821K2107M000	EPCOS - TDK Electronics	100 µF	250 V	±20%	3000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.319" (34.60 mm)	Active	ROHS3
B43851K2107M000	EPCOS - TDK Electronics	100 µF	250 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.319" (34.60 mm)	Active	ROHS3
B43858F2107M000	EPCOS - TDK Electronics	100 µF	250 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.319" (34.60 mm)	Active	ROHS3
EKMG251ELL101MLN3S	Chemi-Con	100 µF	250 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.299" (33.00 mm)	Active	ROHS3
EKXJ351ELL101MLN3S	Chemi-Con	100 µF	350 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.295" (7.50 mm)	0.630" (16.00 mm)	1.299" (33.00 mm)	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Same Electrical & Mechanical Specifications):

ESMG251ELL101MLN3S (Chemi-Con SMG series) provides a direct functional equivalent with identical capacitance, voltage, tolerance, and lead spacing. This part is Active status and ROHS3 compliant, making it suitable for immediate substitution in existing designs.

For Upgraded Performance (Extended Lifetime & Temperature Range):

UCY2V101MHD (Nichicon UCY series) offers a 350 V voltage rating with 12000-hour lifetime at 105°C, compared to the UVR2E101MHD's 2000-hour rating at 85°C. This upgrade provides enhanced reliability margin and extended operating temperature range (-40°C ~ 105°C). The part is Active status and ROHS3 compliant.

EKXJ351ELL101MLN3S (Chemi-Con KXJ series) similarly provides 350 V rating with 12000-hour lifetime at 105°C. This part carries AEC-Q200 automotive qualification and is Active status, suitable for applications requiring automotive-grade reliability.

For Extended Lifetime at Same Voltage:

B43858F2107M000 (EPCOS B43858 series) delivers 5000-hour lifetime at 105°C while maintaining 250 V rating. This option extends operational life without requiring voltage derating and is Active status.

B43851K2107M000 (EPCOS B43851 series) provides 3000-hour lifetime at 105°C with 250 V rating and extensive inventory availability (597,900 pcs), ensuring supply continuity.

For Higher Voltage Margin:

420QXW100MEFR16X31.5 (Rubycon QXW series) offers 420 V rating with 2000-hour lifetime at 105°C, providing maximum voltage headroom for applications with transient overvoltage concerns.

Mechanical Compatibility Note:

URS2E101MHD (Nichicon URS series) maintains identical electrical specifications but features a larger diameter (0.709" vs. 0.630") and shorter height (1.043" vs. 1.319"). This part is suitable only if PCB layout accommodates the dimensional change.

Frequently Asked Questions (FAQ)

Q: Can UCY2V101MHD replace UVR2E101MHD in a 250 V circuit?

A: Yes. The UCY2V101MHD is rated for 350 V, which exceeds the 250 V requirement. Higher voltage-rated capacitors operate safely in lower-voltage applications and provide additional safety margin against transient overvoltages.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes match all electrical and mechanical parameters of the original part. Upgrade substitutes maintain core specifications (capacitance, tolerance, lead spacing) but offer improved performance through higher voltage ratings, extended lifetime ratings, or wider operating temperature ranges.

Q: Are EPCOS B43851K2107M000 and B43858F2107M000 interchangeable?

A: Both parts share identical electrical specifications (100 µF, 250 V, ±20%) and mechanical dimensions. The primary difference is lifetime rating: B43851 provides 3000 hours at 105°C, while B43858 provides 5000 hours at 105°C. Selection depends on application lifetime requirements.

Q: Does the Chemi-Con EKXJ351ELL101MLN3S automotive qualification affect general-purpose applications?

A: No. AEC-Q200 qualification indicates the part meets automotive reliability standards and is suitable for general-purpose applications. Automotive-qualified components typically exhibit equal or superior performance in non-automotive environments.

Q: Why does URS2E101MHD have different physical dimensions?

A: The URS series uses a different can design with larger diameter (18.00 mm vs. 16.00 mm) and shorter height (26.50 mm vs. 34.60 mm). While electrically equivalent, this part requires PCB layout verification to confirm mechanical fit before substitution.

Q: What is the significance of the "Not For New Designs" status on UVR2E101MHD?

A: This designation indicates the part has been superseded in the manufacturer's product line. While existing inventory remains available, new designs should specify Active-status alternatives such as UCY2V101MHD, ESMG251ELL101MLN3S, or EKXJ351ELL101MLN3S to ensure long-term supply continuity and access to design support.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. All substitute parts listed meet ROHS3 compliance requirements, ensuring compatibility with environmental and regulatory standards.

Q: How do ripple current ratings affect part selection?

A: Ripple current capacity indicates the maximum AC current the capacitor can handle without exceeding temperature limits. Higher ripple current ratings provide performance margin in high-frequency switching applications. Selection should match or exceed the application's ripple current requirements at the specified frequency.

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