SK330M016ST Equivalent & Substitute Parts

Part Overview

The SK330M016ST is a 33 µF, 16 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, through-hole configuration. This capacitor is rated for general-purpose applications with a 2000-hour lifetime at 85°C and operates across a temperature range of -40°C to 85°C. The part is currently active and in stock with 1172 units available. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required within the specified electrical and mechanical parameters.

Substiute Parts

SK330M016ST

Cornell Dubilier Electronics (CDE)In Stock: 1186SK330M016ST Datasheet

Current PartRFQ

ECA-1CM330

Panasonic Electronic ComponentsIn Stock: 19858ECA-1CM330 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SK330M016ST is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 33 µF (exact match required)
• Voltage rating: 16 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime rating: 2000 Hrs @ 85°C (exact match required)
• Operating temperature range: -40°C ~ 85°C (exact match required)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package configuration: Radial, Can (exact match required)
• Lead spacing: 0.079" (2.00 mm) (exact match required)
• Physical diameter: 0.197" (5.00 mm) (exact match required)

Compliance Parameters:

• RoHS3 Compliant status (exact match required)
• REACH Unaffected status (exact match required)

The ECA-1CM330 from Panasonic Electronic Components meets all critical electrical, mechanical, and compliance requirements and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the SK330M016ST and ECA-1CM330 are active products with full RoHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory compliance in industrial and consumer electronics.

The SK330M016ST features an ESR of 6.43 Ohm and a maximum seated height of 0.512" (13.00 mm). The ECA-1CM330 provides ripple current specifications at both low frequency (110 mA @ 120 Hz) and high frequency (187 mA @ 10 kHz), with a maximum seated height of 0.472" (12.00 mm).

Selection between these parts should be based on:

1. PCB Layout Constraints: The ECA-1CM330 has a 0.040" (1.00 mm) lower profile, which may be advantageous in space-constrained applications.

2. Ripple Current Requirements: If ripple current performance data is required for circuit analysis, the ECA-1CM330 provides explicit ripple current ratings at standard frequencies.

3. Inventory Availability: The ECA-1CM330 has 19,777 units in stock compared to 1,172 units for the SK330M016ST, providing greater supply assurance.

4. Manufacturer Preference: Selection may depend on established supplier relationships or preferred manufacturer qualifications within the design organization.

Frequently Asked Questions (FAQ)

Q: Can the ECA-1CM330 be used as a direct replacement for the SK330M016ST in existing designs?

A: Yes. Both parts share identical electrical specifications (33 µF, 16 V, ±20% tolerance, 2000 Hrs @ 85°C), identical operating temperature range (-40°C ~ 85°C), identical lead spacing (0.079" / 2.00 mm), and identical physical diameter (0.197" / 5.00 mm). The ECA-1CM330 has a 0.040" lower seated height, which is compatible with standard through-hole PCB layouts designed for radial capacitors of this class.

Q: What are the key electrical parameters that must match for substitution?

A: Capacitance (33 µF), voltage rating (16 V), tolerance (±20%), and lifetime rating (2000 Hrs @ 85°C) must be identical. Operating temperature range (-40°C ~ 85°C) must also match. These parameters define the functional equivalence of the part within the circuit.

Q: Are there any mechanical compatibility concerns?

A: No. Both parts use identical lead spacing (0.079" / 2.00 mm) and physical diameter (0.197" / 5.00 mm), ensuring direct PCB footprint compatibility. The ECA-1CM330's lower profile (0.472" vs. 0.512" maximum height) presents no compatibility issues and may provide layout advantages.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the SK330M016ST and ECA-1CM330 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for industrial and consumer electronics applications.

Q: What is the difference in ESR and ripple current specifications?

A: The SK330M016ST specifies an ESR of 6.43 Ohm. The ECA-1CM330 does not provide ESR data in the available specifications but does provide ripple current ratings: 110 mA @ 120 Hz and 187 mA @ 10 kHz. For applications where ESR is a critical design parameter, the SK330M016ST data should be referenced. For applications where ripple current handling is the primary concern, the ECA-1CM330 specifications apply.

Q: Are both parts currently available?

A: Yes. Both parts are active products. The SK330M016ST has 1,172 units in stock, and the ECA-1CM330 has 19,777 units in stock, providing multiple sourcing options.