USW1HR22MDD Equivalent & Substitute Parts

Part Overview

The USW1HR22MDD is a 0.22 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and repair operations.

Substiute Parts

USW1HR22MDD

NichiconIn Stock: 1310USW1HR22MDD Datasheet

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USV1HR22MFD

NichiconIn Stock: 1093USV1HR22MFD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the USW1HR22MDD is determined by strict equivalence in the following parameters:

• Capacitance value: 0.22 µF (exact match required)
• Voltage rating: 50 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package configuration: Radial, Can (exact match required)
• Mounting type: Through Hole (exact match required)
• Physical dimensions: Lead spacing 0.059" (1.50 mm), diameter 0.157" (4.00 mm), height 0.315" (8.00 mm) (exact match required)
• Ripple current ratings: 2.3 mA @ 120 Hz and 3.45 mA @ 10 kHz (exact match required)

The USV1HR22MFD meets all these criteria and qualifies as a direct substitute. Enhanced lifetime and operating temperature range represent improvements over the original part without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

The USV1HR22MFD is a direct functional equivalent to the USW1HR22MDD. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part provides extended operational lifetime (5000 hours at 105°C versus 1000 hours at 85°C) and an expanded operating temperature range (-40°C to 105°C versus -40°C to 85°C), offering improved reliability margins without any electrical or mechanical incompatibility. Pin-for-pin compatibility and identical electrical specifications ensure seamless integration into existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the USV1HR22MFD be used as a direct replacement for the USW1HR22MDD?

A: Yes. The USV1HR22MFD is electrically and mechanically identical to the USW1HR22MDD across all critical parameters: capacitance, voltage rating, tolerance, polarization, package type, mounting configuration, and physical dimensions. Lead spacing and ripple current ratings are identical.

Q: What are the differences between these two parts?

A: The primary differences are lifetime rating and maximum operating temperature. The USV1HR22MFD is rated for 5000 hours at 105°C compared to 1000 hours at 85°C for the USW1HR22MDD. The USV1HR22MFD also supports operation up to 105°C versus 85°C for the original part. These represent performance enhancements with no compatibility impact.

Q: Are there any PCB layout or footprint changes required?

A: No. Both parts share identical physical dimensions, lead spacing (0.059" / 1.50 mm), diameter (0.157" / 4.00 mm), and height (0.315" / 8.00 mm). No PCB modifications are necessary.

Q: Do both parts meet current compliance standards?

A: Yes. Both the USW1HR22MDD and USV1HR22MFD are ROHS3 compliant and REACH unaffected.

Q: What is the ripple current rating for these capacitors?

A: Both parts are rated for 2.3 mA at 120 Hz (low frequency) and 3.45 mA at 10 kHz (high frequency).