Equivalent & Substitute Parts for SH220M400ST

Part Overview

The SH220M400ST is a 22 µF, 400 V aluminum electrolytic capacitor in radial can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The SH series represents a general-purpose application category with a 2000-hour lifetime rating at 105°C and 12.06 Ohm ESR at 120 Hz. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	Value	Unit
Capacitance	22	µF
Tolerance	±20%	—
Voltage - Rated	400	V
ESR @ 120 Hz	12.06	Ohm
Lifetime @ 105°C	2000	Hrs
Operating Temperature Range	-25 to 105	°C
Lead Spacing	7.50	mm
Diameter	16.00	mm
Height (Seated Max)	25.00	mm
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
Polarization	Polar	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution compatibility for the SH220M400ST is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 22 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 400 V minimum (equal or higher acceptable)
Mounting Type: Through Hole (exact match required)
Package: Radial, Can (exact match required)
Lead Spacing: 7.50 mm (exact match required)
Polarization: Polar (exact match required)

Secondary Compatibility Factors:

Operating Temperature Range: -25°C to 105°C (must encompass or equal)
Diameter: 16.00 mm (exact match required for mechanical fit)
Height: Physical height variation acceptable within board layout constraints
Lifetime @ 105°C: Higher values indicate improved reliability; lower values require application review
Ripple Current Ratings: Higher values provide design margin; lower values require thermal analysis

Substitute parts are grouped into three categories:

Direct Equivalents (400 V Rating): Parts meeting all primary criteria with 400 V voltage rating. These include 400BXC22MEFC16X20 (Rubycon), EEU-EB2G220S (Panasonic), EEU-ED2G220S (Panasonic), EEU-EE2G220S (Panasonic), and UCA2G220MHD6 (Nichicon).

Voltage Upgrades (450 V Rating): Parts with identical capacitance, tolerance, and mechanical specifications but rated for 450 V. These include EEU-EB2W220 (Panasonic) and UCS2W220MHD (Nichicon). Higher voltage rating provides additional safety margin in applications with voltage transients.

Parameter Comparison

Manufacturer	Part Number	Series	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ 105°C (Hrs)	Diameter (mm)	Height (mm)	Lead Spacing (mm)	Product Status	RoHS3
Cornell Dubilier Electronics	SH220M400ST	SH	22	400	±20%	2000	16.00	25.00	7.50	Obsolete	Yes
Rubycon	400BXC22MEFC16X20	BXC	22	400	±20%	12000	16.00	22.00	7.50	Active	Yes
Panasonic Electronic Components	EEU-EB2G220S	EB-A	22	400	±20%	5000	16.00	22.00	7.50	Active	Yes
Panasonic Electronic Components	EEU-ED2G220S	ED-A	22	400	±20%	10000	16.00	20.00	7.50	Active	Yes
Panasonic Electronic Components	EEU-EE2G220S	EE-A	22	400	±20%	10000	16.00	22.00	7.50	Active	Yes
Nichicon	UCA2G220MHD6	UCA	22	400	±20%	12000	16.00	21.50	7.50	Obsolete	Yes
Panasonic Electronic Components	EEU-EB2W220	EB-A	22	450	±20%	5000	16.00	27.00	7.50	Active	Yes
Nichicon	UCS2W220MHD	UCS	22	450	±20%	10000	16.00	21.50	7.50	Active	Yes

Engineering Selection Recommendations

For Direct 400 V Replacement:

The EEU-EE2G220S (Panasonic) is the primary recommendation for direct substitution. This part is active in production, ROHS3 compliant, and offers 10,000-hour lifetime at 105°C—a five-fold improvement over the obsolete SH220M400ST. The mechanical envelope (16.00 mm diameter, 22.00 mm height) accommodates standard through-hole PCB layouts. Inventory availability (5010 units) ensures supply continuity.

The EEU-ED2G220S (Panasonic) provides equivalent performance with a slightly reduced height (20.00 mm), suitable for space-constrained applications. Both Panasonic parts maintain identical lead spacing and diameter specifications.

The 400BXC22MEFC16X20 (Rubycon) offers 12,000-hour lifetime with active product status. Height is 22.00 mm, matching standard PCB footprints. This part provides extended reliability for demanding applications.

For Voltage-Upgraded Applications:

The UCS2W220MHD (Nichicon) provides 450 V rating with 10,000-hour lifetime and active production status. This part is suitable for applications requiring additional voltage margin or experiencing transient overvoltage conditions. Height is 21.50 mm. Inventory availability (21,832 units) is substantial.

The EEU-EB2W220 (Panasonic) offers 450 V rating with 5,000-hour lifetime. Height increases to 27.00 mm; verify PCB clearance before selection.

Compliance and Certification:

All recommended substitutes are ROHS3 compliant and carry REACH Unaffected status where specified. All parts are rated for -25°C to 105°C operating temperature, matching the original specification.

Frequently Asked Questions (FAQ)

Q: Can EEU-EE2G220S directly replace SH220M400ST without PCB modification?

A: Yes. Both parts share identical capacitance (22 µF), voltage rating (400 V), tolerance (±20%), lead spacing (7.50 mm), and diameter (16.00 mm). The EEU-EE2G220S height is 22.00 mm versus 25.00 mm for the SH220M400ST. This 3 mm reduction typically requires no PCB layout changes for standard through-hole designs. Verify clearance above the component if space is constrained.

Q: What is the difference between 400 V and 450 V rated parts?

A: The 450 V parts (EEU-EB2W220, UCS2W220MHD) are electrically identical in capacitance and tolerance but rated for higher voltage stress. These parts are suitable for applications with voltage transients or where additional safety margin is required. The 450 V rating does not affect performance in 400 V applications; it provides design headroom. Note that 450 V parts may have different physical heights.

Q: Why do some substitute parts have longer lifetimes?

A: Lifetime ratings (2000 Hrs, 5000 Hrs, 10000 Hrs, 12000 Hrs @ 105°C) reflect different internal construction and materials. Longer lifetimes indicate improved thermal stability and lower degradation rates. The SH220M400ST specifies 2000 hours; substitutes with 5000, 10000, or 12000 hours provide enhanced reliability. For applications with continuous operation at elevated temperatures, longer-lifetime parts reduce failure risk.

Q: Are Panasonic and Nichicon parts interchangeable?

A: Yes, provided all electrical and mechanical parameters match. EEU-ED2G220S (Panasonic) and UCA2G220MHD6 (Nichicon) both specify 22 µF, 400 V, ±20%, 12000-hour lifetime, and identical lead spacing and diameter. Height varies slightly (20.00 mm vs. 21.50 mm). Both are suitable direct replacements. Verify height clearance for your specific PCB layout.

Q: What does "Obsolete" product status mean for UCA2G220MHD6?

A: Obsolete status indicates the manufacturer has discontinued production. However, 1416 units are currently in stock. This part remains electrically and mechanically compatible with the SH220M400ST. For long-term supply assurance, prioritize active-status parts such as EEU-EE2G220S, EEU-ED2G220S, or 400BXC22MEFC16X20.

Q: Can I use a 450 V part in a 400 V application?

A: Yes. A 450 V rated capacitor operates safely at 400 V. The higher voltage rating provides additional stress margin and typically results in improved reliability. However, verify that the physical dimensions (particularly height) fit your PCB layout, as 450 V variants may be taller.

Q: What is ESR and why does it matter?

A: ESR (Equivalent Series Resistance) represents internal resistance at a specified frequency. The SH220M400ST specifies 12.06 Ohm @ 120 Hz. Substitute parts do not provide ESR values in the available data. For applications sensitive to ESR (such as high-frequency ripple filtering), contact the manufacturer for detailed ESR specifications before final selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts carry ROHS3 Compliant status, matching the original SH220M400ST specification. This ensures compatibility with modern manufacturing and environmental regulations.

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