SH330M016ST Equivalent & Substitute Parts Reference

Part Overview

The SH330M016ST is a 33 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, indicating discontinued production and limited availability. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 2000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Due to obsolete status and finite inventory, equivalent and substitute parts from active manufacturers provide continuity for circuit designs and production requirements. Substitutes are selected based on matching or exceeding electrical performance parameters while maintaining mechanical compatibility with through-hole radial mounting.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Capacitance	33	µF	Must match exactly
Voltage Rating	16	V	Minimum acceptable; higher ratings permitted
Tolerance	±20%	%	Must match or be tighter
ESR @ 120 Hz	7.23	Ohm	Lower values preferred; critical for ripple current handling
Lifetime @ 105°C	2000	Hours	Minimum acceptable; higher values provide margin
Operating Temperature Range	-40 to 105	°C	Must encompass application requirements
Lead Spacing	2.00	mm	Must match for PCB compatibility
Diameter	5.00	mm	Must match for mechanical fit
Mounting Type	Through Hole	-	Must match PCB design
Package Type	Radial, Can	-	Must match for board assembly
RoHS Compliance	ROHS3 Compliant	-	Required for regulated applications

Substitute Part Grouping Explanation

Substitute parts are organized into three functional categories based on voltage rating and product status:

Category 1: Direct Voltage Match (16 V Rating) Parts maintaining the original 16 V voltage specification provide direct electrical equivalence. These include SEK330M016ST (Mallory, active status) and UPW1C330MDD (Nichicon, obsolete status). Both maintain identical capacitance, tolerance, lead spacing, diameter, and through-hole mounting. Voltage-matched substitutes require no circuit re-evaluation for voltage stress.

Category 2: Voltage Upgrade (25 V Rating) Parts rated at 25 V exceed the original 16 V specification while maintaining 33 µF capacitance and ±20% tolerance. SEK330M025ST (CDE, active) and UPW1E330MDD (Nichicon, obsolete) fall into this category. Higher voltage ratings provide additional safety margin in applications subject to voltage transients or supply variations. These parts are electrically compatible with 16 V circuit designs.

Category 3: Voltage Upgrade (35 V Rating) Parts rated at 35 V provide maximum voltage margin above the original specification. EEU-EB1V330S (Panasonic, active), EKZE350ELL330ME11D (Chemi-Con, active), UHE1V330MDD (Nichicon, obsolete), and UPW1V330MDD (Nichicon, obsolete) are included. These components support applications requiring enhanced voltage headroom and extended operational reliability.

Substitution Criteria (Mandatory Matching Parameters):

Capacitance: 33 µF (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 2.00 mm (exact match required)
Diameter: 5.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Polarization: Polar (exact match required)

Substitution Criteria (Minimum Acceptable Parameters):

Voltage Rating: ≥16 V (equal or higher acceptable)
Lifetime @ 105°C: ≥2000 hours (equal or higher acceptable)
Operating Temperature Range: Must include -40°C to 105°C
RoHS Compliance: ROHS3 Compliant (required for regulated applications)

Parameter Comparison

Part Number	Manufacturer	Status	Capacitance (µF)	Voltage (V)	Tolerance (%)	ESR @ 120Hz (Ohm)	Lifetime @ 105°C (Hrs)	Temp Range (°C)	Height (mm)	Ripple @ 120Hz (mA)	Ripple @ 10kHz (mA)
SH330M016ST	CDE	Obsolete	33	16	±20	7.23	2000	-40 to 105	11.00	70	84
SEK330M016ST	Mallory	Active	33	16	±20	7.24	2000	-55 to 105	13.00	70	84
UPW1C330MDD	Nichicon	Obsolete	33	16	±20	—	2000	-55 to 105	11.00	54	180
SEK330M025ST	CDE	Active	33	25	±20	6.43	2000	-55 to 105	13.00	75	90
UPW1E330MDD	Nichicon	Obsolete	33	25	±20	—	2000	-55 to 105	11.00	54	180
UPW1V330MDD	Nichicon	Obsolete	33	35	±20	—	2000	-55 to 105	11.00	54	180
EEU-EB1V330S	Panasonic	Active	33	35	±20	—	5000	-40 to 105	12.00	46	59.8
EKZE350ELL330ME11D	Chemi-Con	Active	33	35	±20	—	2000	-40 to 105	12.50	100	250
UHE1V330MDD	Nichicon	Obsolete	33	35	±20	—	5000	-40 to 105	11.00	115.5	210

Engineering Selection Recommendations

For Direct Replacement (Voltage-Matched, 16 V):

SEK330M016ST (Mallory, Active Status) is the primary recommended substitute. This part maintains identical electrical specifications (33 µF, 16 V, ±20% tolerance, 7.24 Ohm ESR @ 120 Hz) with equivalent ripple current ratings (70 mA @ 120 Hz, 84 mA @ 10 kHz). The part is in active production status, ensuring long-term availability and supply chain continuity. Operating temperature range extends to -55°C, providing enhanced low-temperature performance. Height increases from 11.00 mm to 13.00 mm; verify PCB clearance before implementation. ROHS3 compliance and REACH unaffected status support regulated applications.

UPW1C330MDD (Nichicon, Obsolete Status) provides voltage-matched equivalence but carries obsolete designation, limiting future availability. This part is suitable only for immediate replacement needs with existing inventory. Ripple current performance at high frequency (180 mA @ 10 kHz) exceeds the original specification, indicating superior high-frequency performance.

For Voltage-Upgraded Applications (25 V Rating):

SEK330M025ST (CDE, Active Status) upgrades voltage rating to 25 V while maintaining 33 µF capacitance and ±20% tolerance. ESR improves to 6.43 Ohm @ 120 Hz, reducing heat generation. Ripple current capacity increases to 75 mA @ 120 Hz and 90 mA @ 10 kHz. Active production status ensures availability. Height increases to 13.00 mm; verify PCB layout compatibility. Select this part for applications subject to voltage transients or requiring enhanced reliability margins.

UPW1E330MDD (Nichicon, Obsolete Status) provides equivalent 25 V performance but is obsolete. Use only for immediate replacement with existing stock.

For Maximum Voltage Margin (35 V Rating):

EEU-EB1V330S (Panasonic, Active Status) offers 35 V rating with extended lifetime of 5000 hours @ 105°C, doubling the original 2000-hour specification. Active production ensures supply continuity. Operating temperature range matches the original (-40°C to 105°C). Ripple current at 120 Hz (46 mA) is lower than the original, indicating reduced thermal stress. Height of 12.00 mm requires PCB clearance verification. Select for long-life applications or environments with elevated ambient temperatures.

EKZE350ELL330ME11D (Chemi-Con, Active Status) provides 35 V rating with 2000-hour lifetime. Ripple current capacity is significantly higher (100 mA @ 120 Hz, 250 mA @ 10 kHz), supporting high-ripple-current applications. Height of 12.50 mm requires clearance verification. Active production status supports supply chain requirements.

UHE1V330MDD (Nichicon, Obsolete Status) and UPW1V330MDD (Nichicon, Obsolete Status) provide 35 V equivalence but are obsolete. Use only for immediate replacement with existing inventory.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, supporting regulated markets and environmental requirements. Panasonic EEU-EB1V330S and Chemi-Con EKZE350ELL330ME11D carry active status with REACH unaffected designation, ensuring regulatory continuity for international applications.

Frequently Asked Questions (FAQ)

Q1: Can SEK330M016ST directly replace SH330M016ST without circuit modification?

Yes. SEK330M016ST maintains identical capacitance (33 µF), voltage rating (16 V), tolerance (±20%), lead spacing (2.00 mm), diameter (5.00 mm), and through-hole radial mounting. ESR values are equivalent (7.24 Ohm vs. 7.23 Ohm @ 120 Hz). The only physical difference is increased height (13.00 mm vs. 11.00 mm); verify PCB clearance above the component location before installation.

Q2: What is the advantage of using a 25 V or 35 V rated substitute instead of a 16 V match?

Higher voltage ratings provide safety margin against voltage transients, supply variations, and component aging. A 25 V or 35 V capacitor in a 16 V circuit operates at lower electrical stress, extending component lifetime and improving reliability. Higher-rated parts typically exhibit lower ESR and improved ripple current handling. Select voltage-upgraded substitutes for applications with uncertain supply stability or extended operational life requirements.

Q3: Does height difference between SH330M016ST (11.00 mm) and SEK330M016ST (13.00 mm) affect compatibility?

Height difference must be evaluated against PCB layout constraints. If the original design includes clearance above the capacitor location (such as under a heatsink, shield, or adjacent component), the 2.00 mm increase may cause mechanical interference. Measure available vertical space and compare against substitute height before selection. If clearance is insufficient, select UPW1C330MDD or UHE1V330MDD, which maintain 11.00 mm height.

Q4: Why are some substitutes listed as "Obsolete" if they are available in inventory?

Obsolete status indicates discontinued production by the manufacturer. Current inventory represents remaining stock from final production runs. Obsolete parts are suitable for immediate replacement but should not be selected for new designs or long-term production requirements. Active-status parts (SEK330M016ST, SEK330M025ST, EEU-EB1V330S, EKZE350ELL330ME11D) are preferred for designs requiring multi-year supply continuity.

Q5: What is the difference between ESR and Impedance specifications?

ESR (Equivalent Series Resistance) is measured at a specific frequency (typically 120 Hz or 10 kHz) and represents resistive losses at that frequency. Impedance is frequency-dependent and varies across the operating frequency range. Lower ESR values indicate reduced heat generation and improved performance at the specified frequency. When ESR is not provided, impedance values indicate overall frequency response characteristics. Parts with lower ESR or impedance are preferred for high-ripple-current applications.

Q6: Can UPW1C330MDD be used in place of SH330M016ST for new production?

UPW1C330MDD provides electrical equivalence but carries obsolete status, making it unsuitable for new production designs. Obsolete parts have finite inventory and no guaranteed future availability. For new designs, select SEK330M016ST (Mallory, active) as the primary choice, or SEK330M025ST / EEU-EB1V330S for voltage-upgraded applications. Active-status parts ensure supply chain continuity throughout the product lifecycle.

Q7: Are all substitute parts ROHS3 compliant?

Yes. All substitute parts listed in this reference maintain ROHS3 compliance, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations. This compliance supports applications in regulated markets including automotive, medical, and consumer electronics.

Q8: What ripple current rating should be considered when selecting a substitute?

Ripple current capacity must equal or exceed the original specification to ensure thermal stability. SH330M016ST specifies 70 mA @ 120 Hz and 84 mA @ 10 kHz. All listed substitutes meet or exceed these values. Parts with higher ripple current capacity (such as EKZE350ELL330ME11D at 100 mA @ 120 Hz and 250 mA @ 10 kHz) are suitable for applications with elevated ripple current demands, providing additional thermal margin.

Q9: How does lifetime rating (2000 hours vs. 5000 hours @ 105°C) affect component selection?

Lifetime rating indicates expected operational duration at maximum rated temperature. SH330M016ST specifies 2000 hours @ 105°C. Substitutes with equal or higher lifetime ratings (such as EEU-EB1V330S and UHE1V330MDD at 5000 hours) provide extended operational margin and reduced failure risk in high-temperature environments. For applications operating continuously at or near 105°C, select parts with 5000-hour ratings.

Q10: What is the significance of operating temperature range (-40°C to 105°C vs. -55°C to 105°C)?

Operating temperature range defines the limits within which the component maintains specified electrical characteristics. SH330M016ST operates from -40°C to 105°C. Substitutes with extended lower-temperature range (-55°C) support applications in cold environments or with wide ambient temperature variation. For applications operating within -40°C to 105°C, both ranges are acceptable. Select extended-range parts only if low-temperature performance is a design requirement.

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