SH331M025ST Equivalent & Substitute Parts Reference

Part Overview

The SH331M025ST is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making direct replacement necessary for ongoing production and maintenance applications. 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 obsolescence status, equivalent substitute parts from active manufacturers must be evaluated based on matching electrical specifications, mechanical dimensions, and performance characteristics to ensure functional compatibility in existing circuit designs.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	-
Voltage - Rated	25	V
ESR @ 120 Hz	640	mOhm
Lifetime @ 105°C	2000	Hrs
Operating Temperature Range	-40 to 105	°C
Ripple Current @ 120 Hz	355	mA
Ripple Current @ 10 kHz	426	mA
Lead Spacing	5.00	mm
Diameter	10.00	mm
Height - Seated (Max)	12.00	mm
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SH331M025ST is determined by strict adherence to the following electrical and mechanical parameters:

Primary Matching Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Lead Spacing: 5.00 mm (exact match required)
Diameter: 10.00 mm (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: Must encompass or equal -40°C to 105°C minimum
Height - Seated (Max): Physical clearance tolerance allows variation up to 14.00 mm
Ripple Current Ratings: Substitute must meet or exceed original specifications
Impedance/ESR: Lower values indicate improved performance characteristics
Lifetime @ 105°C: Extended lifetime indicates enhanced reliability

All substitute parts listed below satisfy primary matching criteria. Secondary parameters are provided to enable selection based on application-specific performance requirements and thermal management considerations.

Parameter Comparison

Parameter	SH331M025ST (CDE)	EEU-FC1E331 (Panasonic)	EKY-250ELL331MJC5S (Chemi-Con)	EKZE250ELL331MJC5S (Chemi-Con)	UPW1E331MPD (Nichicon)	UHE1E331MPD6 (Nichicon)
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	25 V	25 V	25 V	25 V	25 V	25 V
Lifetime @ 105°C	2000 Hrs	3000 Hrs	7000 Hrs	4000 Hrs	5000 Hrs	7000 Hrs
Operating Temperature	-40 to 105°C	-55 to 105°C	-40 to 105°C	-40 to 105°C	-55 to 105°C	-40 to 105°C
Ripple Current @ 120 Hz	355 mA	490.8 mA	432.5 mA	515 mA	494 mA	605.5 mA
Ripple Current @ 100 kHz	426 mA @ 10 kHz	755 mA	865 mA	1.03 A	760 mA	865 mA
Impedance	-	90 mOhms	80 mOhms	53 mOhms	90 mOhms	80 mOhms
Lead Spacing	5.00 mm	5.00 mm	5.00 mm	5.00 mm	5.00 mm	5.00 mm
Diameter	10.00 mm	10.00 mm	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Height - Seated (Max)	12.00 mm	12.50 mm	14.00 mm	14.00 mm	12.50 mm	12.50 mm
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

For New Designs and Long-Term Production:

Select from active product status components: EEU-FC1E331 (Panasonic), EKY-250ELL331MJC5S (Chemi-Con), or EKZE250ELL331MJC5S (Chemi-Con). These parts ensure ongoing manufacturer support, supply chain continuity, and compliance with current industry standards.

EKY-250ELL331MJC5S provides the highest lifetime rating (7000 hours @ 105°C) and lowest impedance (80 mOhms) among active alternatives, delivering superior thermal stability and reduced ripple current losses. This part is recommended for applications requiring extended operational life and minimal heat generation.

EKZE250ELL331MJC5S offers the lowest impedance (53 mOhms) and highest ripple current capability (1.03 A @ 100 kHz), making it suitable for high-frequency switching applications and circuits with elevated ripple current demands. Height increase to 14.00 mm requires PCB layout verification.

EEU-FC1E331 (Panasonic) carries AEC-Q200 automotive qualification, appropriate for automotive and mission-critical applications. Operating temperature range extends to -55°C, providing enhanced cold-temperature performance.

For Maintenance and Repair of Existing Equipment:

UHE1E331MPD6 (Nichicon) provides the highest ripple current rating (605.5 mA @ 120 Hz) and extended lifetime (7000 hours @ 105°C) among available options. Extensive inventory (25,758 pcs) ensures immediate availability. Product status "Not For New Designs" does not restrict use in field replacement applications.

UPW1E331MPD (Nichicon) offers balanced performance with 5000-hour lifetime and -55°C minimum operating temperature. Status "Not For New Designs" indicates mature product suitable for legacy system maintenance.

All substitute parts are ROHS3 compliant and maintain identical electrical specifications (330 µF, ±20%, 25 V) and mechanical compatibility (5.00 mm lead spacing, 10.00 mm diameter, through-hole mounting).

Frequently Asked Questions (FAQ)

Q: Can EKY-250ELL331MJC5S be used as a direct replacement for SH331M025ST in existing PCB designs?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), lead spacing (5.00 mm), diameter (10.00 mm), and mounting type (through-hole radial). Height difference is 2.00 mm (14.00 mm vs. 12.00 mm), requiring verification of available PCB clearance above the component. No circuit modifications are necessary.

Q: What is the significance of the "Not For New Designs" status on UHE1E331MPD6 and UPW1E331MPD?

A: This designation indicates the manufacturer has transitioned these products to mature/legacy status and does not recommend their use in new product development. However, these parts remain fully functional and suitable for field replacement, maintenance, and repair of existing equipment. Supply availability may eventually diminish as manufacturing phases out.

Q: How do impedance and ESR values affect component selection?

A: Lower impedance and ESR values reduce voltage ripple, minimize heat generation, and improve circuit efficiency. EKZE250ELL331MJC5S (53 mOhms impedance) outperforms the original SH331M025ST (640 mOhm ESR @ 120 Hz) in high-frequency applications. For general-purpose circuits operating at low frequencies, impedance differences have minimal impact on circuit performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification, meeting current environmental and hazardous substance restrictions. The original SH331M025ST is also ROHS3 compliant.

Q: Which substitute part offers the best thermal performance?

A: EKY-250ELL331MJC5S and UHE1E331MPD6 both provide 7000-hour lifetime ratings at 105°C, the highest among available options. EKZE250ELL331MJC5S offers the lowest impedance (53 mOhms), reducing self-heating. Selection depends on whether extended calendar life or reduced thermal generation is the priority.

Q: Can substitute parts with extended temperature ranges (-55°C minimum) be used in applications requiring only -40°C minimum?

A: Yes. Extended temperature range capability is a superset of the original specification. EEU-FC1E331 and UPW1E331MPD, rated to -55°C, operate correctly in circuits specified for -40°C minimum. No derating or special handling is required.

Q: What is the impact of increased ripple current ratings on component selection?

A: Higher ripple current ratings indicate the capacitor can safely dissipate greater AC current without exceeding temperature limits. Substitute parts with elevated ripple current ratings (UHE1E331MPD6: 605.5 mA @ 120 Hz; EKZE250ELL331MJC5S: 515 mA @ 120 Hz) provide design margin in circuits with high AC ripple content. Original SH331M025ST rated 355 mA @ 120 Hz.

Q: Are mechanical dimensions critical for PCB layout compatibility?

A: Yes. Lead spacing (5.00 mm) and diameter (10.00 mm) must match exactly for through-hole mounting compatibility. Height variation (12.00 mm to 14.00 mm) requires clearance verification above the component. Verify available vertical space before selecting parts with maximum height of 14.00 mm.

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