ECO-S1CP273DA Equivalent & Substitute Parts

Part Overview

The ECO-S1CP273DA is a 27000 µF, 16 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C, serving general-purpose applications requiring high capacitance values in compact form factors.

Key Parameters

Parameter	Value
Capacitance	27000 µF
Voltage Rating	16 V
Tolerance	±20%
ESR @ 120 Hz	31 mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.181" (30.00 mm)
Height (Seated Max)	1.457" (37.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility for the ECO-S1CP273DA is determined by the following critical parameters:

Capacitance: 27000 µF (exact match required)
Voltage Rating: 16 V minimum (higher voltage ratings are acceptable as upgrades)
Tolerance: ±20% (standard tolerance match)
Package Type: Radial, Can - Snap-In (mechanical compatibility)
Lead Spacing: 0.394" (10.00 mm) (PCB footprint requirement)
Mounting Type: Through Hole (assembly process compatibility)
Operating Temperature: -40°C minimum to 85°C minimum (functional range coverage)

Substitute parts are categorized as follows:

Direct Manufacturer Equivalent: Identical electrical and mechanical specifications with active product status.

Upgrade Parts: Higher voltage rating (25 V) or improved temperature performance (105°C operation) while maintaining all other critical parameters.

Similar Parts: Variations in case diameter or height while maintaining core electrical specifications and lead spacing.

Parametric Equivalent: Active production parts with matching electrical characteristics and mechanical form factor.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120 Hz	Lifetime @ Temp	Operating Temp	Case Dia	Height (Max)	Product Status	RoHS Status
ECO-S1CP273DA	Panasonic	27000 µF	16 V	31 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30 mm)	1.457" (37 mm)	Obsolete	REACH Affected
16MXG27000MEFCSN30X30	Rubycon	27000 µF	16 V	—	3000 Hrs @ 105°C	-40°C ~ 105°C	1.181" (30 mm)	1.260" (32 mm)	Active	ROHS3 Compliant
279LMB016M2DE	Cornell Dubilier / Illinois Capacitor	27000 µF	16 V	30.7012 mOhm	3000 Hrs @ 105°C	-40°C ~ 105°C	1.181" (30 mm)	1.457" (37 mm)	Active	ROHS3 Compliant
25MXG27000MEFCSN30X40	Rubycon	27000 µF	25 V	—	3000 Hrs @ 105°C	-40°C ~ 105°C	1.181" (30 mm)	1.654" (42 mm)	Active	ROHS3 Compliant
25USG27000MEFCSN30X40	Rubycon	27000 µF	25 V	—	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30 mm)	1.654" (42 mm)	Active	ROHS3 Compliant
380LX273M016J452	Cornell Dubilier Electronics (CDE)	27000 µF	16 V	31 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	0.984" (25 mm)	1.850" (47 mm)	Active	ROHS3 Compliant
SLPX273M016C4P3	Cornell Dubilier Electronics (CDE)	27000 µF	16 V	25 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	0.984" (25 mm)	1.772" (45 mm)	Active	ROHS3 Compliant
SLPX273M016E5P3	Cornell Dubilier Electronics (CDE)	27000 µF	16 V	25 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30 mm)	1.378" (35 mm)	Active	ROHS3 Compliant
SLPX273M016H3P3	Cornell Dubilier Electronics (CDE)	27000 µF	16 V	25 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.378" (35 mm)	1.181" (30 mm)	Active	ROHS3 Compliant
LLS1C273MELB	Nichicon	27000 µF	16 V	—	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30 mm)	1.457" (37 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Same Voltage, Same Temperature):

The 279LMB016M2DE (Cornell Dubilier LMB series) provides the closest electrical and mechanical match with identical case diameter (30 mm) and height (37 mm). This part maintains 16 V rating and 3000-hour lifetime specification while offering improved temperature performance to 105°C. ROHS3 compliance and active production status support long-term availability.

The LLS1C273MELB (Nichicon LLS series) matches the original dimensions and electrical specifications exactly, with active product status and ROHS3 compliance ensuring supply chain continuity.

Compact Height Alternative:

The 16MXG27000MEFCSN30X40 (Rubycon MXG series) reduces mounted height to 32 mm while maintaining 16 V rating and 30 mm case diameter. This configuration suits space-constrained applications with improved 105°C temperature performance.

Voltage Upgrade Options:

The 25MXG27000MEFCSN30X40 and 25USG27000MEFCSN30X40 (Rubycon 25 V series) provide higher voltage ratings suitable for circuits requiring additional safety margin. Both maintain 27000 µF capacitance and 30 mm case diameter with active production status and ROHS3 compliance. Height increases to 42 mm require PCB layout verification.

Alternative Case Geometries:

The SLPX273M016E5P3 (Cornell Dubilier SLPX series) maintains 30 mm case diameter with reduced height of 35 mm and lower ESR (25 mOhm) compared to the original 31 mOhm specification. The SLPX273M016C4P3 and SLPX273M016H3P3 variants offer different case diameter and height combinations for specific layout requirements while maintaining electrical performance.

All recommended substitutes carry ROHS3 compliance and active product status, ensuring regulatory alignment and supply availability.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V rated capacitor in place of the 16 V ECO-S1CP273DA?

A: Yes. Higher voltage ratings are electrically compatible and provide additional safety margin in the circuit. The 25MXG27000MEFCSN30X40 and 25USG27000MEFCSN30X40 are direct functional upgrades. Verify PCB layout accommodates the increased height (42 mm vs. 37 mm original).

Q: What is the difference between the 16MXG27000MEFCSN30X30 and 279LMB016M2DE?

A: Both maintain 16 V rating and 27000 µF capacitance with active production status. The 279LMB016M2DE matches the original height (37 mm) and provides documented ESR specification (30.7012 mOhm). The 16MXG27000MEFCSN30X30 offers reduced height (32 mm) for compact applications. Both support 105°C operation.

Q: Are there mechanical constraints when substituting parts with different case diameters?

A: Yes. The original ECO-S1CP273DA uses a 30 mm case diameter with 10 mm lead spacing. Substitutes with 25 mm or 35 mm case diameters (such as the SLPX series) require PCB footprint verification. Lead spacing remains constant at 10 mm across all listed parts, maintaining through-hole compatibility.

Q: Which substitute offers the lowest ESR?

A: The SLPX series (SLPX273M016C4P3, SLPX273M016E5P3, SLPX273M016H3P3) provides 25 mOhm ESR at 120 Hz, compared to the original 31 mOhm specification. This represents approximately 19% ESR reduction, beneficial for ripple current handling and thermal performance.

Q: Do all substitutes meet RoHS compliance?

A: All active production substitutes listed carry ROHS3 compliance. The original ECO-S1CP273DA is marked as REACH Affected; all recommended substitutes are REACH Unaffected, supporting modern supply chain requirements.

Q: What is the lead spacing for all listed parts?

A: All parts maintain 0.394" (10.00 mm) lead spacing, ensuring PCB footprint compatibility across the entire substitute list.

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