SH221M025ST Equivalent & Substitute Parts Reference

Part Overview

The SH221M025ST is a 220 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 its obsolete status, equivalent and substitute parts with improved electrical characteristics and extended availability are required for design continuity and supply chain reliability.

Key Parameters

Parameter	Value	Unit
Capacitance	220	µF
Voltage - Rated	25	V
Tolerance	±20%	—
ESR @ 120 Hz	960	mOhm
Lifetime @ 105°C	2000	Hrs
Operating Temperature Range	-40 to 105	°C
Ripple Current @ 120 Hz	250	mA
Ripple Current @ 10 kHz	300	mA
Lead Spacing	5.00	mm
Diameter	10.00	mm
Height (Seated Max)	12.00	mm
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SH221M025ST is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 220 µF (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 / Case: Radial, Can (exact match required)

Voltage Rating Consideration: The original part is rated at 25 V. Substitute parts with higher voltage ratings (35 V) are acceptable as they provide equivalent or superior performance in circuits designed for 25 V operation. Higher voltage ratings do not compromise functionality in lower-voltage applications.

Lifetime and Temperature Performance: Substitute parts with extended lifetime ratings (3000 Hrs, 4000 Hrs, 5000 Hrs, or 7000 Hrs @ 105°C) represent improvements over the original 2000 Hrs specification. Operating temperature ranges of -40°C to 105°C or -55°C to 105°C are compatible with the original specification.

Electrical Performance: Substitute parts with lower ESR values and higher ripple current ratings provide enhanced electrical performance. These improvements do not create incompatibility with the original circuit design.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Lead Spacing (mm)	Diameter (mm)	Height Max (mm)	Product Status
SH221M025ST	Cornell Dubilier Electronics	220	25	±20%	2000	-40 to 105	5.00	10.00	12.00	Obsolete
517D227M035CC6AE3	Vishay Sprague	220	35	±20%	2000	-55 to 105	5.00	10.00	12.50	Obsolete
EEU-FC1V221	Panasonic Electronic Components	220	35	±20%	3000	-55 to 105	5.00	10.00	12.50	Active
EKZE350ELL221MJC5S	Chemi-Con	220	35	±20%	4000	-40 to 105	5.00	10.00	14.00	Active
UHE1V221MPD6	Nichicon	220	35	±20%	7000	-40 to 105	5.00	10.00	12.50	Not For New Designs
UPW1V221MPD	Nichicon	220	35	±20%	5000	-55 to 105	5.00	10.00	12.50	Not For New Designs
35ML220MEFCT810X9	Rubycon	220	35	±20%	5000	-40 to 105	5.00	10.00	10.50	Not For New Designs

Engineering Selection Recommendations

For Active Production and New Designs:

The EEU-FC1V221 (Panasonic Electronic Components) is the primary recommended substitute. This part carries Active product status, ensuring long-term availability and supply chain continuity. It meets all mechanical compatibility requirements, provides a 35 V voltage rating suitable for 25 V circuit applications, and delivers 3000 hours lifetime at 105°C—a 50% improvement over the original specification. The part holds AEC-Q200 automotive qualification, indicating compliance with stringent reliability standards.

For Extended Lifetime Requirements:

The EKZE350ELL221MJC5S (Chemi-Con) offers 4000 hours lifetime at 105°C with Active product status. This part is suitable for applications requiring enhanced thermal stability and extended operational life. The increased height (14.00 mm versus 12.00 mm original) must be verified for PCB layout compatibility.

For Existing Inventory Replacement:

The UHE1V221MPD6 (Nichicon) provides the highest lifetime rating at 7000 hours at 105°C. However, this part carries "Not For New Designs" status, limiting its use to legacy system maintenance and existing inventory replacement only.

For Space-Constrained Applications:

The 35ML220MEFCT810X9 (Rubycon) maintains the lowest profile height at 10.50 mm, matching the original 12.00 mm dimension more closely than most alternatives. This part is suitable for applications with strict height constraints, though it carries "Not For New Designs" status.

All substitute parts are ROHS3 compliant and maintain the same lead spacing (5.00 mm) and diameter (10.00 mm) as the original component, ensuring direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in a circuit designed for 25 V?

A: Yes. A higher voltage rating indicates the capacitor can withstand greater electrical stress. Using a 35 V capacitor in a 25 V circuit operates the component well within its rated specifications and does not create functional or reliability issues.

Q: What is the significance of the "Not For New Designs" product status?

A: Parts marked "Not For New Designs" are in mature or declining production phases. While electrically and mechanically compatible, these parts should be used only for maintenance of existing systems or replacement of legacy inventory. For new product development, select parts with Active status such as EEU-FC1V221 or EKZE350ELL221MJC5S.

Q: Does the height difference between substitute parts affect PCB compatibility?

A: Height differences must be evaluated against specific PCB layout constraints. The original SH221M025ST has a maximum seated height of 12.00 mm. Substitute parts range from 10.50 mm to 14.00 mm. Verify clearance above and below the component before selection. The 35ML220MEFCT810X9 (10.50 mm) offers the most compact profile, while EKZE350ELL221MJC5S (14.00 mm) requires additional vertical clearance.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, meeting environmental and hazardous substance restrictions applicable to electronic components.

Q: What is the difference between ripple current ratings at 120 Hz versus 10 kHz or 100 kHz?

A: Ripple current capacity varies with frequency. Lower frequencies (120 Hz) typically allow lower ripple current, while higher frequencies (10 kHz, 100 kHz) permit greater ripple current handling. The original SH221M025ST supports 250 mA @ 120 Hz and 300 mA @ 10 kHz. Substitute parts generally provide equal or superior ripple current ratings across all frequency ranges, indicating improved thermal performance.

Q: Can I mix different substitute parts in the same circuit board?

A: All listed substitute parts meet the same electrical and mechanical specifications for the 220 µF, 25/35 V, ±20% tolerance category. Mixing different manufacturers is acceptable from a functional standpoint. However, for production consistency and supply chain management, standardizing on a single substitute part is recommended.

Q: What does ESR (Equivalent Series Resistance) represent?

A: ESR is the internal resistance of the capacitor at a specified frequency. Lower ESR values indicate better high-frequency performance and reduced heat generation. The original SH221M025ST specifies 960 mOhm @ 120 Hz. Substitute parts with lower ESR values (such as EKZE350ELL221MJC5S at 53 mOhms) provide superior performance in ripple current handling and thermal stability.

Q: Is the lead spacing identical across all substitute parts?

A: Yes. All substitute parts maintain 5.00 mm lead spacing, ensuring direct compatibility with existing PCB footprints designed for the SH221M025ST.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message