UBW1H2R2MPD Equivalent & Substitute Parts

Part Overview

The UBW1H2R2MPD is a 2.2 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for automotive applications with a lifetime specification of 1000 hours at 135°C. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, maintenance, and production continuity.

Key Parameters

Parameter	Value
Capacitance	2.2 µF
Tolerance	±20%
Voltage - Rated	50 V
Lifetime @ Temperature	1000 Hrs @ 135°C
Operating Temperature Range	-55°C ~ 135°C
Lead Spacing	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.531" (14.60 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant
Applications	Automotive

Substitute Part Grouping Explanation

Substitution of the UBW1H2R2MPD is determined by the following critical parameters:

Capacitance Value: 2.2 µF (exact match required)
Tolerance: ±20% (matching tolerance band)
Voltage Rating: Minimum 50 V (equal or higher voltage rating acceptable)
Package / Case: Radial, Can (identical form factor)
Lead Spacing: 0.138" (4.60 mm) (PCB compatibility requirement)
Physical Dimensions: 0.315" Dia × 0.531" Height (board layout constraint)
Mounting Type: Through Hole (assembly process compatibility)
Polarization: Polar (electrical circuit requirement)
RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The Rubycon 400RX302R2M8X11.5 meets all critical substitution criteria. While it features a higher voltage rating (400 V vs. 50 V) and extended lifetime specification (2000 Hrs @ 130°C vs. 1000 Hrs @ 135°C), these represent performance enhancements rather than incompatibilities. The identical capacitance, tolerance, package geometry, and lead spacing ensure direct PCB compatibility and functional equivalence.

Parameter Comparison

Parameter	UBW1H2R2MPD (Nichicon)	400RX302R2M8X11.5 (Rubycon)
Capacitance	2.2 µF	2.2 µF
Tolerance	±20%	±20%
Voltage - Rated	50 V	400 V
Lifetime @ Temperature	1000 Hrs @ 135°C	2000 Hrs @ 130°C
Operating Temperature Range	-55°C ~ 135°C	-25°C ~ 130°C
Polarization	Polar	Polar
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.531" (14.60 mm)	0.531" (14.60 mm)
Mounting Type	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Applications	Automotive	Automotive
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Rubycon 400RX302R2M8X11.5 is a qualified substitute for the obsolete Nichicon UBW1H2R2MPD based on the following engineering criteria:

Compliance & Certification: Both components are ROHS3 compliant and rated for automotive applications. The Rubycon part carries AEC-Q200 qualification, providing additional assurance for automotive-grade reliability.

Product Availability: The UBW1H2R2MPD is obsolete with no ongoing production. The Rubycon 400RX302R2M8X11.5 is active with 6261 units in stock, ensuring supply chain continuity.

Electrical Compatibility: Identical capacitance (2.2 µF) and tolerance (±20%) guarantee functional equivalence in circuit operation. The higher voltage rating (400 V) provides design margin without introducing incompatibility.

Physical & Mechanical Compatibility: Matching lead spacing (4.60 mm), case diameter (8.00 mm), and seated height (14.60 mm) ensure direct PCB compatibility without layout modifications or rework.

Frequently Asked Questions (FAQ)

Q: Can the Rubycon 400RX302R2M8X11.5 be used as a direct replacement for the Nichicon UBW1H2R2MPD?

A: Yes. Both components share identical capacitance (2.2 µF), tolerance (±20%), package geometry (radial, can), lead spacing (4.60 mm), and physical dimensions. No PCB modifications are required.

Q: Why does the substitute part have a higher voltage rating (400 V vs. 50 V)?

A: Higher voltage rating represents a performance enhancement and does not create incompatibility. The circuit will operate normally with the higher-rated component. Voltage derating does not apply in this substitution direction.

Q: Are there any temperature range differences to consider?

A: The Nichicon part operates from -55°C to 135°C, while the Rubycon part operates from -25°C to 130°C. If the application requires operation below -25°C, the Rubycon substitute is not suitable. For standard automotive temperature ranges, both are equivalent.

Q: What is the significance of the AEC-Q200 rating on the Rubycon part?

A: AEC-Q200 is an automotive-grade reliability qualification. Both the original and substitute are automotive-rated, making them suitable for automotive applications. The AEC-Q200 certification on the Rubycon part provides additional qualification documentation.

Q: Is the higher lifetime specification (2000 Hrs @ 130°C vs. 1000 Hrs @ 135°C) a concern?

A: No. The extended lifetime of the Rubycon part is a performance advantage. Both specifications exceed typical automotive application requirements.

Q: Can this substitute be used in new designs?

A: Yes. The Rubycon 400RX302R2M8X11.5 is an active product with full availability and is suitable for both replacement and new design applications.

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