ESMG201ELL391MP30S Equivalent & Substitute Parts

Part Overview

The ESMG201ELL391MP30S is a 390 µF, 200 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMG series. This radial, through-hole component is rated for 2000 hours at 85°C and is designed for general-purpose applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing system maintenance, repairs, and legacy equipment support.

Substiute Parts

ESMG201ELL391MP30S

Chemi-ConIn Stock: 873ESMG201ELL391MP30S Datasheet

Current PartRFQ

LDM2D391MERYGA

NichiconIn Stock: 1027LDM2D391MERYGA Datasheet

SimilarRFQ

UPT2P391MRD

NichiconIn Stock: 1440UPT2P391MRD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESMG201ELL391MP30S is determined by the following critical parameters:

Primary Matching Criteria:

• Capacitance: 390 µF (exact match required)
• Voltage Rating: 200 V minimum (equal or higher acceptable)
• Tolerance: ±20% (standard tolerance match)
• Mounting Type: Through Hole (mechanical compatibility)
• Package Type: Radial, Can (form factor compatibility)
• Polarization: Polar (functional requirement)

Secondary Compatibility Factors:

• Lead Spacing: 0.394" (10.00 mm) preferred for direct PCB fit
• Physical Dimensions: Diameter and height must accommodate board layout constraints
• Operating Temperature Range: Must support application environment
• Ripple Current Ratings: Must meet or exceed application demands

Substitute parts are grouped based on adherence to these parameters. Parts meeting all primary criteria are considered direct substitutes. Variations in secondary factors require board-level verification.

Parameter Comparison

Engineering Selection Recommendations

LDM2D391MERYGA (Nichicon) - Primary Substitute

The LDM2D391MERYGA is the preferred substitute for the ESMG201ELL391MP30S. Both parts share identical capacitance (390 µF), voltage rating (200 V), tolerance (±20%), and lifetime specification (2000 Hrs @ 85°C). The LDM series is currently active, ensuring long-term availability. This part is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

The primary consideration is lead spacing: the LDM2D391MERYGA has 0.295" (7.50 mm) spacing versus the original 0.394" (10.00 mm). Physical dimensions also differ slightly (0.787" diameter, 1.457" height). These variations require PCB layout verification before implementation.

UPT2P391MRD (Nichicon) - Secondary Substitute

The UPT2P391MRD maintains the same lead spacing (0.394" / 10.00 mm) and diameter (0.866" / 22.00 mm) as the original part, providing superior mechanical compatibility. However, this part has a higher voltage rating (220 V) and extended lifetime (5000 Hrs @ 105°C), which may introduce cost considerations without functional necessity for 200 V applications.

The UPT2P391MRD is currently obsolete, similar to the original part. Height is significantly greater (1.654" / 42.00 mm), requiring board space verification. This part is ROHS3 compliant and REACH unaffected.

Selection Criteria:

• Choose LDM2D391MERYGA for applications prioritizing active product status and long-term supply chain stability, provided PCB layout accommodates the different lead spacing and dimensions.
• Choose UPT2P391MRD for applications where direct mechanical fit is critical and the higher voltage rating and extended lifetime are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the LDM2D391MERYGA be used as a direct replacement without PCB modification?

A: The LDM2D391MERYGA has different lead spacing (7.50 mm vs. 10.00 mm) and physical dimensions than the ESMG201ELL391MP30S. Direct PCB compatibility cannot be assumed. Verify hole spacing and component clearance before installation.

Q: What is the significance of the voltage rating difference between the 200 V original and the 220 V UPT2P391MRD?

A: The UPT2P391MRD's 220 V rating exceeds the original 200 V specification. In a 200 V application, this provides additional safety margin. However, the higher voltage rating does not affect functional performance in circuits designed for 200 V operation.

Q: Why does the LDM2D391MERYGA have higher ripple current ratings?

A: The LDM2D391MERYGA exhibits higher ripple current capacity (1.66 A @ 120 Hz, 2.49 A @ 50 kHz) compared to the original (1.16 A @ 120 Hz, 1.74 A @ 100 kHz). This indicates improved thermal performance and lower ESR in the Nichicon design, providing additional operational headroom in ripple-current-sensitive applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both the LDM2D391MERYGA and UPT2P391MRD are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the impact of the different operating temperature ranges?

A: The original ESMG201ELL391MP30S operates from -40°C to 85°C. The UPT2P391MRD extends this to -25°C to 105°C. For applications operating within the original -40°C to 85°C range, both parts are functionally equivalent. Applications requiring extended temperature operation should select the UPT2P391MRD.

Q: Can I use the UPT2P391MRD in place of the LDM2D391MERYGA?

A: Both parts meet the primary electrical specifications (390 µF, 200 V minimum, ±20% tolerance). However, the UPT2P391MRD is taller (1.654" vs. 1.457") and has different lead spacing (10.00 mm vs. 7.50 mm). Mechanical compatibility depends on specific board layout. Verify dimensions and clearances before substitution.