LMT055104A Equivalent & Substitute Parts

Part Overview

The LMT055104A is a 100 mF (EDLC) supercapacitor manufactured by Ohmite, rated for 5.5 V operation in a radial, can-style surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure direct replacement capability.

Key Parameters

Parameter	Value	Criticality for Substitution
Capacitance	100 mF	Critical
Voltage Rating	5.5 V	Critical
Mounting Type	Surface Mount	Critical
Package Type	Radial, Can - SMD	Critical
Tolerance	-20%, +80%	Critical
RoHS Compliance	ROHS3 Compliant	Regulatory
ECCN Classification	EAR99	Regulatory

Substitute Part Grouping Explanation

Substitute parts for the LMT055104A are identified based on strict equivalence across the following parameters:

Electrical Equivalence Requirements:

Capacitance: 100 mF (exact match)
Voltage Rating: 5.5 V (exact match)
Tolerance: -20%, +80% (exact match)

Mechanical Equivalence Requirements:

Mounting Type: Surface Mount
Package Type: Radial, Can - SMD
Form Factor: Compatible with original footprint

Regulatory Equivalence Requirements:

RoHS3 Compliance
ECCN Classification: EAR99

The substitute part RSCVN1045R5G08012T manufactured by Elna America meets all critical electrical and mechanical parameters. Additional specifications such as ESR and lifetime ratings are provided for application-specific evaluation but do not disqualify substitution eligibility.

Parameter Comparison

Parameter	LMT055104A (Ohmite)	RSCVN1045R5G08012T (Elna America)	Match Status
Capacitance	100 mF	100 mF	Equivalent
Voltage Rating	5.5 V	5.5 V	Equivalent
Tolerance	-20%, +80%	-20%, +80%	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Type	Radial, Can - SMD	Radial, Can - SMD	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
ECCN	EAR99	EAR99	Equivalent
ESR	Not specified	30 Ohm	Additional data
Lifetime @ Temperature	Not specified	1000 Hrs @ 70°C	Additional data
Operating Temperature Range	Not specified	-25°C ~ 70°C	Additional data
Product Status	Obsolete	Not For New Designs	Both restricted

Engineering Selection Recommendations

The RSCVN1045R5G08012T from Elna America is electrically and mechanically equivalent to the LMT055104A. Both components share identical capacitance, voltage rating, tolerance, mounting type, and package configuration. Both maintain ROHS3 compliance and EAR99 classification.

The substitute part carries a product status designation of "Not For New Designs," matching the obsolete status of the original component. This indicates both parts are in end-of-life phases. For applications requiring long-term component availability, evaluation of alternative supercapacitor solutions with active production status is warranted.

The RSCVN1045R5G08012T provides specified ESR (30 Ohm) and lifetime rating (1000 Hrs @ 70°C) data not available for the original part. These parameters should be evaluated against application requirements to confirm suitability for the intended circuit function.

Frequently Asked Questions (FAQ)

Q: Can the RSCVN1045R5G08012T directly replace the LMT055104A on existing PCBs?

A: Yes. Both components are surface mount devices in identical radial, can-style SMD packages with matching electrical specifications (100 mF, 5.5 V, -20%/+80% tolerance). Physical dimensions differ slightly (diameter: 10.50 mm vs. 12.50 mm; height: 5.70 mm vs. 8.50 mm), requiring verification of available PCB footprint space.

Q: What is the significance of the different product status designations?

A: The LMT055104A is classified as obsolete, indicating production has ended. The RSCVN1045R5G08012T is classified as "Not For New Designs," indicating limited availability and no active development support. Both designations reflect end-of-life status and suggest evaluation of current-production alternatives for new applications.

Q: Are there differences in packaging between these parts?

A: The LMT055104A packaging is listed as "-" (unspecified). The RSCVN1045R5G08012T is supplied in Tape & Reel (TR) format. Both are surface mount components in radial, can-style packages. Tape & Reel packaging is standard for automated assembly processes.

Q: How do the ESR and lifetime specifications affect substitution?

A: The RSCVN1045R5G08012T specifies 30 Ohm ESR and 1000 Hrs @ 70°C lifetime. The LMT055104A does not provide these specifications. ESR and lifetime are application-dependent parameters. Circuits sensitive to ESR performance or requiring extended operational life at elevated temperatures should evaluate whether the specified values meet design requirements.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the LMT055104A and RSCVN1045R5G08012T are ROHS3 compliant and classified as EAR99 for export control purposes. The RSCVN1045R5G08012T additionally carries REACH Unaffected status.

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