108SAK016M Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 108SAK016M is a 1000 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as obsolete, though 751 pieces remain in stock as new original inventory. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C, making it suitable for general-purpose applications requiring stable capacitance and extended operational life.

Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, procurement planning, and long-term product support. Substitute parts must maintain electrical compatibility while meeting the same functional requirements.

Key Parameters

Parameter	Value	Unit
Capacitance	1000	µF
Voltage - Rated	16	V
Tolerance	±20	%
Lifetime @ Temperature	2000 Hrs @ 85°C	—
Operating Temperature Range	-40°C to 85°C	—
Lead Spacing	0.197" (5.00 mm)	—
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
Polarization	Polar	—

Substitute Part Grouping Explanation

Substitution logic for the 108SAK016M is based on the following critical parameters that must remain constant or be upgraded:

Primary Compatibility Criteria:

Capacitance: 1000 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 16 V minimum (equal or higher voltage acceptable)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Polarization: Polar (exact match required)
Operating Temperature: -40°C to 85°C (exact match required)
Lifetime: 2000 Hrs @ 85°C (exact match required)

Substitute parts are grouped into three categories:

Direct Substitutes (Same Voltage Rating): Parts with identical electrical specifications and 16 V rating, differing only in physical dimensions or ESR characteristics while maintaining full functional equivalence.

Upgrade Substitutes (Higher Voltage Rating): Parts with 25 V or higher voltage ratings that provide enhanced voltage margin and improved reliability while maintaining all other electrical parameters. These are suitable for applications where higher voltage headroom is beneficial.

Similar Substitutes (Same Voltage, Different Dimensions): Parts with matching 16 V rating and electrical specifications but different physical dimensions, requiring PCB layout verification before implementation.

Parameter Comparison

Parameter	108SAK016M	108CKS016MLN	108SAK025M	URS1E102MHD	SK102M016ST
Manufacturer	Cornell Dubilier / Illinois Capacitor	Cornell Dubilier / Illinois Capacitor	Cornell Dubilier / Illinois Capacitor	Nichicon	Cornell Dubilier Electronics (CDE)
Series	SAK	CKS	SAK	URS	SK
Capacitance	1000 µF	1000 µF	1000 µF	1000 µF	1000 µF
Voltage - Rated	16 V	16 V	25 V	25 V	16 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Lifetime @ Temp.	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)	0.394" Dia (10.00 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	0.394" Dia (10.00 mm)
Height - Seated (Max)	0.650" (16.50 mm)	0.551" (14.00 mm)	0.650" (16.50 mm)	0.650" (16.50 mm)	0.906" (23.00 mm)
ESR @ 120 Hz	—	331.6 mOhm	265 mOhm	—	210 mOhm
Ripple Current @ 120 Hz	—	700 mA	820 mA	830 mA	—
Ripple Current @ High Frequency	—	980 mA @ 100 kHz	943 mA @ 10 kHz	954.5 mA @ 10 kHz	—
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Same Footprint):

The 108CKS016MLN serves as a direct functional equivalent to the 108SAK016M. Both parts maintain identical capacitance (1000 µF), voltage rating (16 V), tolerance (±20%), and lead spacing (5.00 mm). The 108CKS016MLN is currently in active production status with 4595 pieces in stock, ensuring long-term availability. The primary difference is physical diameter (10.00 mm versus 12.50 mm) and height (14.00 mm versus 16.50 mm), which requires PCB layout verification. The 108CKS016MLN exhibits higher ESR (331.6 mOhm @ 120 Hz) compared to the SK102M016ST (210 mOhm), making it suitable for applications where ESR is not a critical constraint. RoHS3 compliance of the 108CKS016MLN aligns with modern regulatory requirements.

For Voltage-Upgraded Applications:

The 108SAK025M and URS1E102MHD both provide 25 V rated voltage while maintaining 1000 µF capacitance and ±20% tolerance. Both parts share identical physical dimensions (0.492" diameter, 0.650" height) with the original 108SAK016M, enabling direct PCB footprint compatibility. The 108SAK025M (Cornell Dubilier, active status, 870 units in stock) offers lower ESR (265 mOhm @ 120 Hz) and higher ripple current capability (820 mA @ 120 Hz, 943 mA @ 10 kHz). The URS1E102MHD (Nichicon, active status, 2421 units in stock) provides comparable ripple current performance (830 mA @ 120 Hz, 954.5 mA @ 10 kHz) with RoHS3 compliance and Not Applicable MSL rating. Both upgrade options are suitable for designs requiring enhanced voltage margin or improved thermal performance.

For Lowest ESR Requirement:

The SK102M016ST maintains the 16 V voltage rating and 1000 µF capacitance with the lowest ESR specification (210 mOhm). However, this part exhibits a taller profile (0.906" height versus 0.650"), requiring PCB layout verification. The SK102M016ST is suitable for applications where ESR minimization is critical and vertical space permits the increased height. RoHS3 compliance and active production status support long-term availability.

Compliance and Regulatory Considerations:

All substitute parts carry REACH Unaffected status, matching the original part's regulatory standing. The 108CKS016MLN, 108SAK025M, URS1E102MHD, and SK102M016ST all achieve RoHS3 compliance, exceeding the regulatory requirements of the obsolete 108SAK016M. Moisture Sensitivity Level 1 (Unlimited) for Cornell Dubilier and CDE parts, and Not Applicable for Nichicon, indicate no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can the 108SAK016M be replaced with a 25 V rated capacitor in a 16 V circuit?

A: Yes. The 108SAK025M and URS1E102MHD both operate at 25 V rating and are suitable for 16 V circuits. Higher voltage-rated capacitors operate safely at lower applied voltages. This substitution provides additional voltage margin and typically improves reliability and thermal performance.

Q: What is the impact of different physical dimensions on PCB compatibility?

A: The 108CKS016MLN and SK102M016ST have different diameters and heights compared to the 108SAK016M. The 108CKS016MLN (10.00 mm diameter, 14.00 mm height) and SK102M016ST (10.00 mm diameter, 23.00 mm height) require verification that PCB layout accommodates these dimensions. The 108SAK025M and URS1E102MHD maintain identical dimensions (12.50 mm diameter, 16.50 mm height) to the original part, enabling direct footprint compatibility.

Q: How does ESR affect capacitor selection?

A: ESR (Equivalent Series Resistance) influences ripple current handling and thermal performance. The SK102M016ST exhibits the lowest ESR (210 mOhm), followed by 108SAK025M (265 mOhm) and 108CKS016MLN (331.6 mOhm). Lower ESR reduces heat generation under ripple current conditions. Selection depends on application ripple current requirements and thermal constraints.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 108CKS016MLN, 108SAK025M, URS1E102MHD, and SK102M016ST all carry RoHS3 Compliant status, ensuring compliance with current environmental regulations. The original 108SAK016M does not specify RoHS status, making these substitutes suitable for designs requiring regulatory compliance.

Q: What is the difference between active and obsolete product status?

A: The 108SAK016M is classified as obsolete, indicating discontinued production and limited future availability (751 units currently in stock). All substitute parts carry active status, ensuring continued manufacturing, long-term availability, and manufacturer support. Active status is critical for designs requiring component replenishment beyond current inventory.

Q: Can the 108CKS016MLN be used as a direct replacement despite smaller physical size?

A: The 108CKS016MLN is electrically equivalent to the 108SAK016M (1000 µF, 16 V, ±20%, 2000 Hrs @ 85°C, 5.00 mm lead spacing). However, its smaller diameter (10.00 mm versus 12.50 mm) and height (14.00 mm versus 16.50 mm) require PCB layout verification. If the PCB footprint accommodates these dimensions, the 108CKS016MLN provides a direct electrical replacement with active production status.

Q: Which substitute offers the best long-term availability?

A: The URS1E102MHD (Nichicon, 2421 units in stock) and 108CKS016MLN (Cornell Dubilier, 4595 units in stock) both carry active production status with substantial inventory levels. Both manufacturers are established suppliers with global distribution networks, supporting long-term component availability and design continuity.

Q: Is Nichicon URS1E102MHD compatible with Cornell Dubilier designs?

A: Yes. The URS1E102MHD maintains identical electrical specifications (1000 µF, 25 V, ±20%, 2000 Hrs @ 85°C) and physical dimensions (12.50 mm diameter, 16.50 mm height, 5.00 mm lead spacing) to the 108SAK025M. Both parts are suitable for cross-manufacturer substitution in applications where voltage upgrade is acceptable. Nichicon and Cornell Dubilier are both qualified suppliers for industrial and commercial applications.

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