SH2R2M050ST Equivalent & Substitute Parts

Part Overview

The SH2R2M050ST is a 2.2 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 2000 hours at 105°C, making it suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for production and field replacement applications.

Substiute Parts

SH2R2M050ST

Cornell Dubilier Electronics (CDE)In Stock: 1174SH2R2M050ST Datasheet

Current PartRFQ

SEK2R2M050ST

MalloryIn Stock: 1425SEK2R2M050ST Datasheet

UpgradeRFQ

UPW1H2R2MDD

NichiconIn Stock: 19545UPW1H2R2MDD Datasheet

DirectRFQ

EEU-EB1H2R2S

Panasonic Electronic ComponentsIn Stock: 28768EEU-EB1H2R2S Datasheet

UpgradeRFQ

UPW2A2R2MDD

NichiconIn Stock: 1876UPW2A2R2MDD Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SH2R2M050ST is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Must Match):

• Capacitance: 2.2 µF
• Voltage Rating: 50 V
• Tolerance: ±20%
• Polarization: Polar
• Mounting Type: Through Hole
• Package / Case: Radial, Can
• Lead Spacing: 0.079" (2.00 mm)
• Case Diameter: 0.197" (5.00 mm)

Secondary Compatibility Parameters (Allowable Variation):

• Height - Seated (Max): Physical space constraints may permit variations within PCB layout tolerances
• ESR @ 120 Hz: Variations acceptable within circuit performance requirements
• Lifetime @ 105°C: Equal or greater lifetime ratings are acceptable
• Operating Temperature Range: Equal or extended ranges are acceptable
• Ripple Current Ratings: Equal or greater ratings are acceptable

Substitute parts are grouped into two categories: direct equivalents (matching all primary criteria) and upgrades (matching primary criteria with enhanced secondary parameters such as extended lifetime or improved temperature range).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - SEK2R2M050ST (Mallory)

The SEK2R2M050ST is the primary direct equivalent to the SH2R2M050ST. Both parts share identical electrical specifications: 2.2 µF capacitance, 50 V voltage rating, ±20% tolerance, and equivalent ESR characteristics at 120 Hz (72.38 Ohm versus 72.34 Ohm). The SEK2R2M050ST maintains the same 2000-hour lifetime rating at 105°C and identical ripple current specifications. The primary difference is an extended operating temperature range (-55°C to 105°C versus -40°C to 105°C) and a slightly increased seated height of 13.00 mm versus 11.00 mm. The SEK2R2M050ST carries active product status, ensuring ongoing availability and supply chain continuity. This part is ROHS3 compliant and suitable for direct substitution in applications where the additional 2 mm height does not present PCB layout constraints.

Upgrade Option - EEU-EB1H2R2S (Panasonic)

The EEU-EB1H2R2S represents an upgrade substitute with enhanced reliability characteristics. This part maintains all primary electrical specifications (2.2 µF, 50 V, ±20% tolerance) and mechanical compatibility (2.00 mm lead spacing, 5.00 mm case diameter, through-hole radial package). The significant advantage is an extended lifetime rating of 5000 hours at 105°C, compared to 2000 hours for the original part. The seated height of 12.00 mm falls between the original 11.00 mm and the Mallory equivalent at 13.00 mm, offering improved PCB layout flexibility. The EEU-EB1H2R2S carries active product status and ROHS3 compliance, making it suitable for applications requiring enhanced long-term reliability.

Alternative Equivalent - UPW1H2R2MDD (Nichicon)

The UPW1H2R2MDD provides an alternative equivalent with matching primary specifications (2.2 µF, 50 V, ±20% tolerance) and identical seated height of 11.00 mm. This part maintains the same 2000-hour lifetime rating and extends the operating temperature range to -55°C to 105°C. The UPW1H2R2MDD carries obsolete product status, similar to the original part, which may limit long-term availability. However, current inventory levels are substantial (19,461 pieces), providing near-term supply security. This part is suitable for applications where height constraints are critical and extended temperature range operation is required.

Higher Voltage Alternative - UPW2A2R2MDD (Nichicon)

The UPW2A2R2MDD is a voltage-upgraded substitute with 100 V rating instead of 50 V. This part maintains identical capacitance (2.2 µF), tolerance (±20%), and mechanical dimensions (2.00 mm lead spacing, 5.00 mm case diameter, 11.00 mm height). The higher voltage rating provides additional design margin in applications subject to voltage transients or where circuit topology requires higher voltage headroom. The UPW2A2R2MDD carries obsolete product status and should be selected only when the higher voltage rating provides specific circuit benefits, as it represents a departure from the original 50 V specification.

Frequently Asked Questions (FAQ)

Q: Can the SEK2R2M050ST be used as a direct replacement for the SH2R2M050ST?

A: Yes. The SEK2R2M050ST meets all primary substitution criteria: identical 2.2 µF capacitance, 50 V voltage rating, ±20% tolerance, and equivalent ESR characteristics. The seated height increases from 11.00 mm to 13.00 mm, which must be verified against PCB layout constraints. The extended operating temperature range (-55°C to 105°C) and active product status make this the recommended direct equivalent.

Q: What is the primary advantage of the EEU-EB1H2R2S over the original SH2R2M050ST?

A: The EEU-EB1H2R2S provides a 5000-hour lifetime rating at 105°C, compared to 2000 hours for the original part. This 2.5× improvement in rated lifetime enhances long-term reliability in applications subject to sustained elevated temperatures. All electrical specifications remain identical, and the part carries active product status.

Q: Are there height restrictions when substituting the SH2R2M050ST?

A: The original part has a maximum seated height of 11.00 mm. The SEK2R2M050ST increases to 13.00 mm, while the EEU-EB1H2R2S is 12.00 mm. PCB layout must accommodate these variations. The UPW1H2R2MDD and UPW2A2R2MDD maintain the original 11.00 mm height if space constraints are critical.

Q: Can the UPW2A2R2MDD (100 V) be used in place of the SH2R2M050ST (50 V)?

A: The UPW2A2R2MDD is electrically compatible from a capacitance and tolerance perspective, but the 100 V rating represents a departure from the original 50 V specification. This substitution is valid only when the circuit design benefits from the higher voltage rating or when voltage transient protection is required. Standard 50 V applications should use 50 V-rated equivalents.

Q: What is the difference between "direct equivalent" and "upgrade" substitutes?

A: Direct equivalents match all primary electrical and mechanical specifications of the original part. Upgrade substitutes maintain primary specifications but offer enhanced secondary characteristics such as extended lifetime, improved temperature range, or higher voltage rating. Both categories are suitable for substitution, with selection based on application requirements and design constraints.

Q: Why is the SH2R2M050ST classified as obsolete?

A: Obsolete status indicates that the original manufacturer (Cornell Dubilier Electronics) has discontinued production and no longer accepts new orders. This classification necessitates the use of equivalent parts from active manufacturers to ensure ongoing component availability for production and field replacement applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (SEK2R2M050ST, UPW1H2R2MDD, EEU-EB1H2R2S, and UPW2A2R2MDD) carry ROHS3 compliance certification, matching the environmental compliance status of the original SH2R2M050ST.

Q: What is the significance of ESR (Equivalent Series Resistance) in capacitor substitution?

A: ESR affects capacitor performance in high-frequency applications and ripple current handling. The SH2R2M050ST and SEK2R2M050ST both specify 72.34 Ohm and 72.38 Ohm ESR at 120 Hz respectively, ensuring equivalent performance in low-frequency ripple applications. Other substitutes do not specify ESR but provide ripple current ratings that indicate acceptable performance characteristics.

Q: Can the UPW1H2R2MDD be used despite its obsolete status?

A: Yes. Although classified as obsolete, the UPW1H2R2MDD maintains substantial current inventory (19,461 pieces) and meets all primary substitution criteria. This part is suitable for applications where height constraints are critical and extended temperature range operation is required. However, for long-term supply security, the active-status alternatives (SEK2R2M050ST or EEU-EB1H2R2S) are preferred.