SH4R7M050ST Equivalent & Substitute Parts Reference

Part Overview

The SH4R7M050ST is a 4.7 µF, 50 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.

Identification of equivalent and substitute parts is necessary due to the obsolete status of the SH4R7M050ST. Active production alternatives from CDE and other manufacturers provide improved availability, extended operational lifetimes, and maintained electrical compatibility within specified parameter tolerances.

Substiute Parts

SH4R7M050ST

Cornell Dubilier Electronics (CDE)In Stock: 747SH4R7M050ST Datasheet

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SEK4R7M050ST

Cornell Dubilier Electronics (CDE)In Stock: 5286SEK4R7M050ST Datasheet

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SEK4R7M063ST

Cornell Dubilier Electronics (CDE)In Stock: 1079SEK4R7M063ST Datasheet

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EEU-EB1H4R7S

Panasonic Electronic ComponentsIn Stock: 19257EEU-EB1H4R7S Datasheet

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EEU-EB1J4R7S

Panasonic Electronic ComponentsIn Stock: 20031EEU-EB1J4R7S Datasheet

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UPW2A4R7MDD

NichiconIn Stock: 1377UPW2A4R7MDD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SH4R7M050ST are grouped based on the following substitution logic:

Direct Equivalents (Same Voltage Rating - 50V):

• SEK4R7M050ST (CDE): Identical capacitance, voltage, and tolerance with improved product status (Active). Extended operating temperature range (-55°C to 105°C). Slightly increased height (0.512" vs 0.433"). ESR specification remains equivalent (33.88 Ohm).
• EEU-EB1H4R7S (Panasonic): Identical capacitance, voltage, and tolerance. Extended lifetime (5000 hours vs 2000 hours at 105°C). Reduced height (0.472"). Different manufacturer with established supply chain.

Voltage-Upgraded Substitutes (63V Rating):

• SEK4R7M063ST (CDE): Capacitance and tolerance identical. Voltage rating increased to 63V, providing additional safety margin. Improved ESR (28.23 Ohm @ 120Hz, lower than original). Extended lifetime (2000 hours). Increased height (0.512").
• EEU-EB1J4R7S (Panasonic): Capacitance and tolerance identical. Voltage rating increased to 63V. Extended lifetime (5000 hours). Reduced height (0.472"). Different manufacturer.

Voltage-Upgraded Substitute (100V Rating):

• UPW2A4R7MDD (Nichicon): Capacitance and tolerance identical. Voltage rating increased to 100V for maximum design margin. Obsolete status (similar to original part). Lifetime 2000 hours. Identical height (0.433").

All substitutes maintain the critical parameters: 4.7 µF capacitance, ±20% tolerance, 0.079" (2.00mm) lead spacing, radial can package, and through-hole mounting. Substitution is permissible when the application circuit voltage does not exceed the substitute part's rated voltage.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SEK4R7M050ST

The SEK4R7M050ST represents the optimal direct replacement for the obsolete SH4R7M050ST. Both parts are manufactured by Cornell Dubilier Electronics, ensuring consistent design philosophy and performance characteristics. The SEK4R7M050ST maintains identical electrical specifications (4.7 µF, 50V, ±20% tolerance) while offering active product status with established supply chain availability. The extended operating temperature range (-55°C to 105°C) provides additional design margin compared to the original part's -40°C to 105°C range. ESR values are equivalent (33.88 Ohm vs 33.86 Ohm), ensuring comparable ripple current handling. The increased height (0.512" vs 0.433") requires verification of available PCB clearance but does not affect electrical compatibility.

Secondary Recommendation: EEU-EB1H4R7S

The EEU-EB1H4R7S (Panasonic EB-A series) provides an alternative from an established manufacturer with extended operational lifetime (5000 hours vs 2000 hours at 105°C). This part maintains identical electrical specifications and offers reduced height (0.472"), potentially improving PCB layout flexibility. Active product status ensures long-term availability. Selection of this part is appropriate when extended component lifetime is a design requirement or when PCB height constraints favor the reduced profile.

Voltage-Upgraded Options: SEK4R7M063ST or EEU-EB1J4R7S

These 63V-rated parts are suitable for applications where circuit voltage does not exceed 63V. The SEK4R7M063ST offers improved ESR (28.23 Ohm, lower than original), enhancing ripple current performance. The EEU-EB1J4R7S provides extended lifetime (5000 hours) with reduced height. Both parts maintain active product status.

High-Voltage Option: UPW2A4R7MDD

The UPW2A4R7MDD (Nichicon, 100V rating) is suitable only for applications where maximum voltage margin is required. This part shares obsolete status with the original component and should be selected only when 100V rating is a specific design requirement and when supply availability can be confirmed.

Compliance Verification

All recommended substitutes maintain ROHS3 compliance, matching the original part's regulatory status. Panasonic parts include REACH Unaffected designation, providing additional regulatory assurance for European applications.

Frequently Asked Questions (FAQ)

Q1: Can SEK4R7M050ST be used as a direct replacement for SH4R7M050ST without circuit modification?

A: Yes. The SEK4R7M050ST maintains identical capacitance (4.7 µF), voltage rating (50V), and tolerance (±20%). Lead spacing (0.079" / 2.00mm) and package type (radial, can) are identical. The primary consideration is PCB clearance, as the SEK4R7M050ST height is 0.512" compared to the original 0.433". Verify available vertical clearance before installation.

Q2: What is the difference between the 50V and 63V rated substitutes?

A: The 63V-rated parts (SEK4R7M063ST and EEU-EB1J4R7S) provide higher voltage margin and, in the case of SEK4R7M063ST, improved ESR performance (28.23 Ohm vs 33.86 Ohm). These parts are electrically compatible with circuits designed for 50V operation. Selection of 63V parts is appropriate when circuit voltage may approach the 50V limit or when improved ripple current handling is beneficial.

Q3: Why does the EEU-EB1H4R7S have a longer lifetime specification (5000 hours vs 2000 hours)?

A: Lifetime specification reflects the manufacturer's design and testing standards for the component series. The Panasonic EB-A series is engineered for extended operational life at elevated temperatures. This specification difference does not indicate a deficiency in the original SH4R7M050ST but rather represents different design approaches by different manufacturers. Selection of the 5000-hour part is appropriate for applications requiring extended service intervals or high-reliability requirements.

Q4: Are there any height restrictions that would prevent using certain substitutes?

A: Yes. The SH4R7M050ST has a maximum seated height of 0.433" (11.00mm). The SEK4R7M050ST and SEK4R7M063ST are taller at 0.512" (13.00mm). The Panasonic parts (EEU-EB1H4R7S and EEU-EB1J4R7S) are 0.472" (12.00mm). The UPW2A4R7MDD matches the original height at 0.433" (11.00mm). Verify PCB clearance above the component location before selecting a taller substitute.

Q5: Can the 100V-rated UPW2A4R7MDD be used in a 50V circuit?

A: Yes. A higher voltage-rated capacitor can be used in a lower voltage circuit without electrical degradation. The UPW2A4R7MDD is electrically compatible with 50V applications. However, this part shares obsolete status with the original component, limiting long-term availability. Selection should be based on specific design requirements for 100V margin and confirmed supply availability.

Q6: What is the significance of ESR (Equivalent Series Resistance) in selecting a substitute?

A: ESR affects the capacitor's ability to handle ripple current and influences voltage ripple across the component. The original SH4R7M050ST specifies 33.86 Ohm @ 120Hz. The SEK4R7M050ST (33.88 Ohm) and SEK4R7M063ST (28.23 Ohm) provide comparable or improved ESR performance. Panasonic and Nichicon parts do not specify ESR in the provided data. For applications with high ripple current requirements, the SEK4R7M063ST offers the lowest ESR value.

Q7: Are all substitutes RoHS compliant?

A: Yes. All recommended substitutes maintain ROHS3 compliance, matching the original SH4R7M050ST. Panasonic parts additionally specify REACH Unaffected status, providing regulatory assurance for European markets.

Q8: What is the lead spacing, and why is it important for substitution?

A: Lead spacing is 0.079" (2.00mm) for all parts listed. This dimension determines PCB hole spacing and is critical for mechanical compatibility. All substitutes maintain identical lead spacing, ensuring PCB footprint compatibility without layout modification.

Q9: Which substitute offers the best overall availability and performance?

A: The SEK4R7M050ST provides the optimal balance of direct electrical equivalence, active product status, and established availability. The EEU-EB1H4R7S offers extended lifetime as an alternative from a major manufacturer. Selection depends on specific application requirements for lifetime, voltage margin, and PCB clearance constraints.

Q10: Can substitutes be mixed within a single circuit board?

A: Yes, provided all parts meet the circuit's voltage and capacitance requirements. Mixing different manufacturers or voltage ratings within a single board is electrically permissible. However, design practice typically standardizes on a single part number to simplify procurement, inventory management, and field service procedures.