Equivalent & Substitute Parts for ECA-2CM101B

Part Overview

The ECA-2CM101B is a 100 µF, 160 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This through-hole component is rated for 2000 hours at 85°C and is designed for general-purpose applications. The part is currently active and in stock with 883 units available in Tape & Box packaging.

Equivalent and substitute parts are necessary when the original part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design upgrades are needed to improve reliability or operating temperature range.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage Rating	160 V
Tolerance	±20%
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.063" (27.00 mm)
Operating Temperature Range	-25°C ~ 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ECA-2CM101B is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 100 µF
Voltage Rating: 160 V (or higher)
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package Type: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Physical Dimensions: 0.492" Dia (12.50 mm) and Height ≤ 1.063" (27.00 mm)

Flexible Parameters (may vary):

Packaging format (Tape & Box, Bulk, Cut Tape)
Operating temperature range (may be extended)
Lifetime rating (may be extended)
Ripple current specifications (may be higher)
Manufacturer (different manufacturers acceptable)

The substitute parts are grouped into two categories: direct equivalents (identical electrical and mechanical specifications) and upgrades (enhanced reliability or temperature performance while maintaining physical compatibility).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Height (Max)	Packaging	Status
ECA-2CM101B	Panasonic	100 µF	160 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Tape & Box	Active
ECA-2CM101	Panasonic	100 µF	160 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Bulk	Active
EEU-ED2C101B	Panasonic	100 µF	160 V	±20%	10000 Hrs @ 105°C	-25°C ~ 105°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Cut Tape	Active
UCS2C101MHD1TO	Nichicon	100 µF	160 V	±20%	10000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	1.043" (26.50 mm)	Cut Tape	Active
UCY2D101MHD1TO	Nichicon	100 µF	200 V	±20%	12000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	1.043" (26.50 mm)	Cut Tape	Active
UVK2C101MHD1TO	Nichicon	100 µF	160 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Cut Tape	Not For New Designs
UVR2C101MHD1TO	Nichicon	100 µF	160 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Cut Tape	Not For New Designs

Engineering Selection Recommendations

Direct Equivalents (Panasonic M-A Series):

ECA-2CM101 is electrically and mechanically identical to ECA-2CM101B, differing only in packaging format (Bulk vs. Tape & Box). Selection depends on manufacturing process requirements and inventory management.

Enhanced Reliability Substitutes (Panasonic ED-A Series):

EEU-ED2C101B offers extended lifetime (10000 Hrs @ 105°C vs. 2000 Hrs @ 85°C) while maintaining identical electrical specifications and physical dimensions. This part is suitable for applications requiring improved long-term reliability. Operating temperature range extends to 105°C.

Cross-Manufacturer Equivalents (Nichicon UCS Series):

UCS2C101MHD1TO provides equivalent electrical performance with 10000 Hrs @ 105°C lifetime rating and extended operating temperature range (-40°C ~ 105°C). Physical height is slightly reduced (1.043" vs. 1.063"), which may be advantageous in space-constrained designs. This part is active and recommended for new designs.

Upgraded Performance (Nichicon UCY Series):

UCY2D101MHD1TO offers higher voltage rating (200 V vs. 160 V) with extended lifetime (12000 Hrs @ 105°C) and wider operating temperature range (-40°C ~ 105°C). This part is suitable for designs requiring enhanced voltage margin or improved thermal performance. Note: REACH Status is Affected.

Legacy Parts (Not Recommended for New Designs):

UVK2C101MHD1TO and UVR2C101MHD1TO are functionally equivalent to ECA-2CM101B but carry "Not For New Designs" status. These parts should be used only for legacy system maintenance or repair applications.

Frequently Asked Questions (FAQ)

Q: Can I use ECA-2CM101 (Bulk packaging) as a direct replacement for ECA-2CM101B (Tape & Box)?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. ECA-2CM101 is suitable if your manufacturing process accommodates bulk packaging; otherwise, ECA-2CM101B remains the correct choice for tape and reel operations.

Q: What is the advantage of using EEU-ED2C101B instead of ECA-2CM101B?

A: EEU-ED2C101B provides significantly extended lifetime (10000 Hrs @ 105°C vs. 2000 Hrs @ 85°C) and higher maximum operating temperature (105°C vs. 85°C). Physical dimensions remain identical, ensuring direct mechanical compatibility. This upgrade is beneficial for applications with extended service life requirements or elevated ambient temperatures.

Q: Are Nichicon UCS2C101MHD1TO and Panasonic ECA-2CM101B fully interchangeable?

A: Yes, with one minor consideration. UCS2C101MHD1TO has a slightly reduced height (1.043" vs. 1.063"), which is compatible with the original design envelope. Both parts share identical electrical specifications, lead spacing, and diameter. UCS2C101MHD1TO offers improved reliability (10000 Hrs @ 105°C) and extended operating temperature range (-40°C ~ 105°C).

Q: When should I use UCY2D101MHD1TO instead of the original ECA-2CM101B?

A: UCY2D101MHD1TO is appropriate when your circuit design can accommodate the higher voltage rating (200 V vs. 160 V) and when improved reliability and temperature performance are required. The higher voltage rating provides additional safety margin in applications subject to voltage transients or when operating near the original part's voltage limit.

Q: Why are UVK2C101MHD1TO and UVR2C101MHD1TO marked "Not For New Designs"?

A: These parts are legacy products from Nichicon and are retained in inventory for maintenance and repair of existing systems only. For new designs, use active alternatives such as UCS2C101MHD1TO or UCY2D101MHD1TO.

Q: Do all substitute parts maintain the same physical footprint?

A: Physical dimensions are nearly identical across all substitutes. Lead spacing (0.197" / 5.00 mm) and diameter (0.492" / 12.50 mm) are consistent. Height varies slightly: ECA-2CM101B, UVK2C101MHD1TO, and UVR2C101MHD1TO are 1.063" (27.00 mm), while UCS2C101MHD1TO and UCY2D101MHD1TO are 1.043" (26.50 mm). Both heights are within acceptable tolerance for standard through-hole PCB designs.

Q: What compliance certifications apply to all substitute parts?

A: All parts listed are ROHS3 Compliant and REACH Unaffected, except UCY2D101MHD1TO, which is REACH Affected. All parts carry EAR99 export classification and HTSUS code 8532.22.0020.

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