Equivalent & Substitute Parts for 336SAK050M

Part Overview

The Cornell Dubilier 336SAK050M is a 33 µF, 50 V aluminum electrolytic capacitor in radial, through-hole configuration. This component is classified as Active status and is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the original component. Alternatives are selected when the primary part reaches end-of-life status, inventory constraints occur, or when enhanced performance characteristics are required within the same physical envelope and mounting interface.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Capacitance	33	µF	Must match exactly
Voltage - Rated	50	V	Must equal or exceed
Tolerance	±20%	%	Must match or be tighter
Lead Spacing	2.50	mm	Must match for PCB compatibility
Size / Dimension	6.30	mm Dia	Must match for mechanical fit
Height - Seated (Max)	10.50	mm	Must not exceed available space
Mounting Type	Through Hole	-	Must match
Package / Case	Radial, Can	-	Must match
Operating Temperature	-40°C ~ 85°C	°C	Must meet or exceed range
Lifetime @ Temp.	2000	Hrs @ 85°C	Baseline reliability metric
RoHS Status	ROHS3 Compliant	-	Regulatory requirement

Substitute Part Grouping Explanation

Substitute parts for the 336SAK050M are categorized into two groups based on substitution logic:

Upgrade Substitutes (Higher Voltage Rating): These parts maintain the 33 µF capacitance and ±20% tolerance while increasing the rated voltage to 63 V. This provides enhanced voltage margin and improved reliability in applications subject to voltage transients or aging effects. All upgrade substitutes maintain through-hole radial configuration with 2.50 mm lead spacing and 6.30 mm diameter. Height may increase to 11.00 mm, requiring verification of available PCB clearance. These parts are suitable when the application can accommodate the additional height and when enhanced voltage headroom is beneficial.

Similar Substitute (Same Voltage Rating): The SK330M050ST from Cornell Dubilier Electronics maintains identical electrical specifications (33 µF, 50 V, ±20% tolerance) and mechanical form factor (6.30 mm diameter, 2.50 mm lead spacing). This part is Active status and offers lower ESR (4.02 Ohm versus 6.029 Ohm), providing improved ripple current handling. Height increases to 13.00 mm, requiring clearance verification. This substitute is optimal for direct replacement when voltage rating and capacitance must remain unchanged.

Critical Substitution Parameters:

Capacitance: 33 µF (exact match required)
Lead Spacing: 2.50 mm (exact match required for PCB hole pattern)
Can Diameter: 6.30 mm (exact match required for mechanical fit)
Mounting Type: Through Hole Radial (exact match required)
Tolerance: ±20% (match or tighter acceptable)
Voltage Rating: 50 V minimum (equal or higher acceptable)
RoHS3 Compliance: Required for regulatory conformance

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance (%)	ESR (Ohm)	Lifetime (Hrs @ Temp)	Operating Temp (°C)	Height Max (mm)	Product Status
336SAK050M	Cornell Dubilier	33	50	±20	6.029 @ 120Hz	2000 @ 85	-40 ~ 85	10.50	Active
EKZE630ELL330MF11D	Chemi-Con	33	63	±20	0.350 (Impedance)	2000 @ 105	-40 ~ 105	11.00	Active
UFW1J330MED	Nichicon	33	63	±20	Not Specified	2000 @ 85	-40 ~ 85	11.00	Obsolete
UHE1J330MED	Nichicon	33	63	±20	1.2	5000 @ 105	-40 ~ 105	11.00	Obsolete
UPW1H330MED	Nichicon	33	50	±20	0.430 (Impedance)	2000 @ 105	-55 ~ 105	11.00	Obsolete
UPW1J330MED	Nichicon	33	63	±20	0.710 (Impedance)	2000 @ 105	-55 ~ 105	11.00	Obsolete
UVR1J330MED	Nichicon	33	63	±20	Not Specified	2000 @ 85	-40 ~ 85	11.00	Obsolete
SK330M050ST	Cornell Dubilier Electronics	33	50	±20	4.02	2000 @ 85	-40 ~ 85	13.00	Active

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

The SK330M050ST from Cornell Dubilier Electronics is the optimal direct substitute. This part maintains identical electrical specifications (33 µF, 50 V, ±20% tolerance) and mechanical compatibility (6.30 mm diameter, 2.50 mm lead spacing, through-hole radial). Both parts are Active status with ROHS3 compliance and REACH unaffected certification. The SK330M050ST provides superior ESR performance (4.02 Ohm versus 6.029 Ohm), resulting in lower impedance and improved ripple current handling. The increased height of 13.00 mm requires verification of available PCB clearance above the component.

Recommendation for Enhanced Voltage Margin:

When application design permits increased component height and enhanced voltage headroom is required, the EKZE630ELL330MF11D from Chemi-Con is the preferred upgrade substitute. This part is Active status and provides 63 V rated voltage (26% higher than the original 50 V specification). Operating temperature range extends to 105°C, and lifetime rating increases to 2000 hours at 105°C. The 11.00 mm height is 0.50 mm greater than the original, requiring clearance verification. Impedance specification of 350 mOhms indicates superior high-frequency performance.

Consideration for Extended Lifetime Applications:

The UHE1J330MED from Nichicon offers extended lifetime of 5000 hours at 105°C, providing enhanced reliability for long-duration applications. This part is Obsolete status but maintains 33 µF capacitance, 63 V rating, and ±20% tolerance. The 1.2 Ohm impedance and extended temperature range (-40°C to 105°C) support demanding thermal environments. Obsolete status requires inventory verification before selection.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original 336SAK050M. All parts are classified as Moisture Sensitivity Level 1 (Unlimited) or Not Applicable, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can I use a 63 V rated capacitor in place of the 50 V 336SAK050M?

A: Yes. A higher voltage rating is electrically compatible and provides improved voltage margin. The 63 V substitutes (EKZE630ELL330MF11D, UPW1J330MED, UVR1J330MED, UHE1J330MED) maintain the same 33 µF capacitance and ±20% tolerance. However, these parts have increased height (11.00 mm versus 10.50 mm), requiring verification that PCB clearance is available above the component location.

Q: What is the difference between ESR and Impedance specifications?

A: ESR (Equivalent Series Resistance) and Impedance are related but distinct parameters. ESR is typically measured at a specific frequency (120 Hz in the 336SAK050M specification). Impedance is a broader measure of total opposition to AC current flow and is often specified at higher frequencies (100 kHz). Lower values in either parameter indicate better high-frequency performance and lower ripple current losses. The SK330M050ST ESR of 4.02 Ohm is lower than the original 6.029 Ohm, providing improved performance.

Q: Why do some substitute parts show "Obsolete" status?

A: Obsolete status indicates the manufacturer has discontinued production. These parts (UFW1J330MED, UHE1J330MED, UPW1H330MED, UPW1J330MED, UVR1J330MED) may still be available from inventory but are not recommended for new designs. Active status parts (EKZE630ELL330MF11D, SK330M050ST) are preferred for ongoing production and long-term availability.

Q: Does the increased height of substitute parts affect circuit performance?

A: Height increase does not affect electrical performance. The SK330M050ST (13.00 mm height) and 63 V substitutes (11.00 mm height) provide identical or superior electrical characteristics compared to the original 336SAK050M (10.50 mm height). Height increase only requires verification that available PCB clearance above the component location is sufficient. If clearance is limited, the 11.00 mm height substitutes are preferable to the 13.00 mm option.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original 336SAK050M. This compliance is maintained across all Active and Obsolete status parts listed.

Q: What is the significance of the 2.50 mm lead spacing specification?

A: Lead spacing of 2.50 mm is the distance between the two radial leads on the component. This dimension must match exactly to ensure compatibility with the PCB hole pattern. All substitute parts maintain 2.50 mm lead spacing, confirming PCB footprint compatibility without requiring layout modifications.

Q: Can I substitute a 33 µF capacitor with a different capacitance value?

A: No. Capacitance value must match exactly at 33 µF. Substituting with different capacitance values (such as 22 µF or 47 µF) will alter circuit performance and is not acceptable. All listed substitutes maintain the 33 µF specification.

Q: What does "Polarization: Polar" mean for this capacitor?

A: Polarization indicates this is a polarized electrolytic capacitor with defined positive and negative terminals. The positive lead must be connected to higher potential and the negative lead to lower potential in the circuit. Reverse polarity connection will damage the capacitor. All substitute parts maintain polar configuration and require identical polarity orientation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message