338SAK016M Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 338SAK016M is a 3300 µF, 16 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the SAK series. This radial, through-hole component is designed for general-purpose applications and is currently Active in product status with 907 units in stock. Alternative equivalent models are necessary when primary stock is unavailable, when specific thermal or dimensional requirements must be met, or when enhanced performance characteristics (such as improved ripple current handling or extended lifetime ratings) are required for the application.

Key Parameters

Parameter	338SAK016M
Capacitance	3300 µF
Tolerance	±20%
Voltage - Rated	16 V
ESR (Equivalent Series Resistance)	131 mOhm @ 120 Hz
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Ripple Current @ 120 Hz	1.43 A @ 120 Hz
Ripple Current @ 10 kHz	1.6445 A @ 10 kHz
Lead Spacing	0.295" (7.50 mm)
Size / Dimension (Diameter)	0.709" Dia (18.00 mm)
Height - Seated (Max)	0.650" (16.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the 338SAK016M is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria (Must Match):

Capacitance: 3300 µF
Tolerance: ±20%
Voltage Rating: 16 V (minimum)
Polarization: Polar
Mounting Type: Through Hole
Package Type: Radial, Can

Secondary Compatibility Parameters:

Operating Temperature Range (must encompass the primary part's range or be suitable for the application)
ESR and Ripple Current Ratings (application-dependent; must be evaluated against circuit load requirements)
Physical Dimensions (lead spacing and height; may vary within board layout constraints)
Lifetime @ Temperature Rating (application-dependent; must meet or exceed design life requirements)

The four substitute parts listed below satisfy the primary substitution criteria. Each offers distinct advantages in thermal performance, ripple current handling, or manufacturing source diversity.

Parameter Comparison

Parameter	338SAK016M (Cornell Dubilier)	ECA-1CHG332 (Panasonic)	EEU-FC1C332 (Panasonic)	SK332M025ST (Cornell Dubilier)	URS1C332MHD (Nichicon)
Capacitance	3300 µF	3300 µF	3300 µF	3300 µF	3300 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	16 V	16 V	16 V	25 V	16 V
ESR (Equivalent Series Resistance)	131 mOhm @ 120 Hz	—	22 mOhms	100 mOhm	—
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 105°C	5000 Hrs @ 105°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	1.43 A	1.17 A	2.134 A	—	1.46 A
Ripple Current @ High Frequency	1.6445 A @ 10 kHz	1.346 A @ 100 kHz	2.51 A @ 100 kHz	—	1.679 A @ 10 kHz
Lead Spacing	0.295" (7.50 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Size / Dimension (Diameter)	0.709" (18.00 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)	0.630" (16.00 mm)	0.709" (18.00 mm)
Height - Seated (Max)	0.650" (16.50 mm)	1.063" (27.00 mm)	1.378" (35.00 mm)	1.339" (34.00 mm)	0.650" (16.50 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts are Active in product status and ROHS3 Compliant, meeting regulatory and environmental compliance requirements equivalent to the primary 338SAK016M component.

ECA-1CHG332 (Panasonic NHG-A Series): This substitute matches the primary capacitance, voltage rating, and tolerance specifications. It extends the operating temperature range to -55°C ~ 105°C and provides a lifetime rating of 2000 Hrs @ 105°C. The reduced lead spacing (5.00 mm vs. 7.50 mm) and smaller physical diameter (12.50 mm vs. 18.00 mm) result in a more compact footprint, though increased height (27.00 mm vs. 16.50 mm) must be evaluated against PCB layout constraints. This option is suitable for space-constrained applications requiring enhanced thermal performance.

EEU-FC1C332 (Panasonic FC Series): This substitute offers superior performance characteristics with a 5000-hour lifetime rating at 105°C and significantly higher ripple current handling (2.134 A @ 120 Hz and 2.51 A @ 100 kHz compared to the primary part's 1.43 A and 1.6445 A respectively). It carries AEC-Q200 automotive qualification, indicating rigorous reliability testing. The substantially reduced ESR of 22 mOhms improves circuit efficiency. Physical dimensions require board-level evaluation due to increased height (35.00 mm) and reduced lead spacing (5.00 mm). This option is recommended for high-reliability and high-ripple-current applications.

SK332M025ST (Cornell Dubilier SK Series): This substitute is manufactured by the same original equipment manufacturer as the primary component, ensuring consistency in manufacturing processes and quality control. The 25 V voltage rating provides a safety margin above the primary 16 V specification. The ESR of 100 mOhm is lower than the primary 131 mOhm, contributing to improved performance. Lead spacing and diameter remain identical to the primary part (7.50 mm and 16.00 mm respectively), simplifying PCB integration. The increased height (34.00 mm) must be verified against application constraints. This option is suitable for drop-in replacement scenarios requiring enhanced voltage headroom.

URS1C332MHD (Nichicon URS Series): This substitute provides parametric equivalence to the primary part across the critical electrical specifications. The identical physical dimensions (0.709" diameter, 0.650" height, and 7.50 mm lead spacing) facilitate direct board-level substitution. Ripple current ratings (1.46 A @ 120 Hz and 1.679 A @ 10 kHz) closely match the primary part. This option is ideal for direct substitution when manufacturing source diversity is required or when Nichicon component availability is preferred.

Frequently Asked Questions (FAQ)

Q: Can the SK332M025ST be used as a direct drop-in replacement? A: The SK332M025ST maintains identical lead spacing (7.50 mm) and diameter (16.00 mm) to the primary 338SAK016M. However, its height increases from 16.50 mm to 34.00 mm. Compatibility depends on available vertical clearance on the PCB. The higher 25 V voltage rating is electrically compatible with 16 V circuit specifications.

Q: What are the dimensional constraints when selecting an alternative? A: The critical dimensional parameter is lead spacing; the primary part uses 7.50 mm spacing. The Panasonic substitutes (ECA-1CHG332 and EEU-FC1C332) reduce this to 5.00 mm, requiring PCB pad redesign. Physical diameter and height vary across substitutes and must be evaluated against board-level clearance requirements and thermal dissipation needs.

Q: Which substitute offers the best ripple current performance? A: The EEU-FC1C332 provides the highest ripple current ratings at 2.134 A @ 120 Hz and 2.51 A @ 100 kHz, representing an 49% increase in low-frequency and 53% increase in high-frequency ripple current capacity compared to the primary 338SAK016M. This makes it suitable for applications requiring enhanced current-handling capability.

Q: Are all substitutes ROHS3 Compliant and REACH Unaffected? A: All four substitute parts carry ROHS3 Compliant status and REACH Unaffected designation, maintaining environmental and regulatory compliance equivalent to the primary 338SAK016M component.

Q: How do the lifetime ratings compare across substitutes? A: The primary 338SAK016M and SK332M025ST both specify 2000 Hrs @ 85°C. The ECA-1CHG332 and EEU-FC1C332 shift to higher-temperature ratings: 2000 Hrs @ 105°C and 5000 Hrs @ 105°C respectively. Applications requiring extended operational life in elevated-temperature environments benefit from the Panasonic substitutes, particularly the EEU-FC1C332.

Q: Can the URS1C332MHD be substituted without PCB modification? A: The URS1C332MHD maintains identical physical dimensions and lead spacing (0.709" diameter, 0.295" lead spacing, 0.650" height) to the primary 338SAK016M, enabling direct PCB-level substitution without pad or layout redesign.

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