ESMM451VSN331MQ50U Equivalent & Substitute Parts

Part Overview

The ESMM451VSN331MQ50U is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMM series. This radial, can-style snap-in capacitor is designed for through-hole mounting applications requiring high voltage energy storage and filtering. The part is currently active in production with full RoHS compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and environmental ratings are maintained across alternative packaging configurations or inventory sources.

Substiute Parts

ESMM451VSN331MQ50U

Chemi-ConIn Stock: 920ESMM451VSN331MQ50U Datasheet

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ESMM451VSN331MQ50S

Chemi-ConIn Stock: 1319ESMM451VSN331MQ50S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESMM451VSN331MQ50U is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance: 330 µF (exact match)
• Voltage Rating: 450 V (exact match)
• Tolerance: ±20% (exact match)
• ESR @ 120 Hz: 1.005 Ohm (exact match)
• Ripple Current @ 120 Hz: 2.12 A (exact match)
• Ripple Current @ 100 kHz: 3.0316 A (exact match)
• Lifetime @ 85°C: 3000 Hrs (exact match)
• Operating Temperature Range: -25°C ~ 85°C (exact match)

Mechanical Compatibility Requirements:

• Lead Spacing: 0.394" (10.00 mm) (exact match)
• Diameter: 1.000" (25.40 mm) (exact match)
• Height - Seated (Max): 2.047" (52.00 mm) (exact match)
• Mounting Type: Through Hole (exact match)
• Package / Case: Radial, Can - Snap-In (exact match)

Compliance & Environmental Requirements:

• RoHS Status: RoHS Compliant (exact match)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match)
• REACH Status: REACH Unaffected (exact match)

The substitute part ESMM451VSN331MQ50S meets all electrical, mechanical, and compliance criteria. The only difference is packaging configuration (Bulk versus standard packaging), which does not affect functional performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the ESMM451VSN331MQ50U and ESMM451VSN331MQ50S are active production parts from Chemi-Con's SMM series with identical electrical and mechanical specifications. Selection between these parts is based on packaging and inventory availability rather than functional performance.

ESMM451VSN331MQ50U is suitable for applications requiring standard packaging configuration with current inventory of 843 pieces.

ESMM451VSN331MQ50S is suitable for applications where bulk packaging is acceptable, with higher inventory availability of 1,269 pieces.

Both parts maintain full RoHS compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The identical ESR, ripple current ratings, and thermal lifetime specifications ensure equivalent performance in high-voltage filtering, energy storage, and power conditioning circuits operating within the -25°C to 85°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can ESMM451VSN331MQ50S be used as a direct replacement for ESMM451VSN331MQ50U?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging configuration (Bulk versus standard). They share identical capacitance (330 µF), voltage rating (450 V), ESR (1.005 Ohm @ 120 Hz), ripple current specifications, and physical dimensions (1.000" diameter, 2.047" height, 0.394" lead spacing). Both are through-hole, snap-in mounted components.

Q: What does the packaging difference between these parts mean?

A: The ESMM451VSN331MQ50U uses standard packaging, while the ESMM451VSN331MQ50S uses bulk packaging. This affects how the parts are supplied and stored but does not impact electrical performance, mechanical fit, or circuit functionality.

Q: Are the mechanical dimensions identical between these substitute parts?

A: Yes. Both parts have identical lead spacing (0.394" / 10.00 mm), diameter (1.000" / 25.40 mm), and maximum seated height (2.047" / 52.00 mm). They are both radial, can-style snap-in components designed for through-hole mounting on standard PCB layouts.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ESMM451VSN331MQ50U and ESMM451VSN331MQ50S are RoHS Compliant, REACH Unaffected, and classified as Moisture Sensitivity Level 1 (Unlimited). They carry identical ECCN (EAR99) and HTSUS (8532.22.0040) classifications.

Q: What is the thermal lifetime specification for these capacitors?

A: Both parts are rated for 3000 hours of operation at 85°C. The operating temperature range is -25°C to 85°C. These specifications are identical across both part numbers.

Q: Are the ripple current ratings the same?

A: Yes. Both parts have identical ripple current specifications: 2.12 A @ 120 Hz (low frequency) and 3.0316 A @ 100 kHz (high frequency). ESR is 1.005 Ohm @ 120 Hz for both parts.