Equivalent & Substitute Parts for Cornell Dubilier SXR151M025ST

Part Overview

The Cornell Dubilier Electronics (CDE) SXR151M025ST is a 150 µF, 25 V aluminum electrolytic capacitor in a radial, through-hole configuration. This component is classified as Obsolete, requiring identification of suitable alternatives for new designs and production continuity. The obsolescence status necessitates evaluation of equivalent substitutes that maintain functional compatibility while meeting current design requirements.

Key Parameters

Parameter	Specification
Capacitance	150 µF
Tolerance	±20%
Voltage Rating	25 V
Package Type	Radial, Can (Through Hole)
Lead Spacing	0.197" (5.00mm)
Can Diameter	0.394" (10.00mm)
Maximum Height	0.472" (12.00mm)
Operating Temperature Range	-40°C to 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute relationships for the SXR151M025ST are determined by the following critical parameters:

Capacitance: Exact match at 150 µF
Tolerance: Identical ±20% tolerance
Voltage Rating: Minimum 25 V (substitutes rated at 50 V are acceptable as they provide higher voltage margin)
Package Type: Radial, through-hole configuration required
Lead Spacing: 0.197" (5.00mm) standard pitch
Can Diameter: 0.394" (10.00mm) standard form factor
Polarization: Polar aluminum electrolytic type
Temperature Range: Compatible -40°C to 105°C operation
RoHS Compliance: ROHS3 Compliant status maintained

Two substitute parts satisfy these criteria: UHE1H151MPD (Nichicon) and EKZE500ELL151MJC5S (Chemi-Con), both rated at 50 V and available in the same physical form factor.

Parameter Comparison

Parameter	SXR151M025ST (Original)	UHE1H151MPD (Upgrade)	EKZE500ELL151MJC5S (Similar)
Manufacturer	Cornell Dubilier Electronics	Nichicon	Chemi-Con
Capacitance	150 µF	150 µF	150 µF
Tolerance	±20%	±20%	±20%
Voltage Rating	25 V	50 V	50 V
ESR @ 120Hz	1.24 Ω	Not Specified	Not Specified
Lifetime @ 105°C	4000 Hours	7000 Hours	4000 Hours
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C
Ripple Current @ 120Hz	200 mA	532 mA	391.6 mA
Ripple Current @ 100kHz	400 mA	760 mA	979 mA
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Can Diameter	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Maximum Height	0.472" (12.00mm)	0.492" (12.50mm)	0.551" (14.00mm)
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

UHE1H151MPD (Nichicon) is classified as "Not For New Designs" and offers the longest thermal life rating at 7000 hours at 105°C, exceeding the original part's 4000-hour specification. This part provides enhanced ripple current handling across both frequency bands and maintains ROHS3 compliance.

EKZE500ELL151MJC5S (Chemi-Con) carries Active product status and represents the most viable long-term solution for ongoing production and new designs. This part maintains the 4000-hour thermal life rating of the original while providing superior ripple current ratings and ROHS3 compliance. The slightly increased maximum height (0.551" versus 0.472") must be evaluated against board layout constraints.

Both substitutes operate within the required -40°C to 105°C temperature range and maintain identical capacitance, tolerance, and lead spacing specifications. The 50 V voltage rating of both substitutes provides additional voltage margin relative to the 25 V original specification.

Frequently Asked Questions (FAQ)

Q: Can either substitute be directly installed on existing PCBs designed for the SXR151M025ST?

A: Both parts maintain the 0.197" (5.00mm) lead spacing and 0.394" (10.00mm) can diameter, ensuring footprint compatibility. However, the EKZE500ELL151MJC5S exhibits a maximum height of 0.551" (14.00mm) compared to the original's 0.472" (12.00mm), requiring verification against vertical clearance constraints in the final assembly.

Q: What is the significance of the 50 V voltage rating on the substitute parts?

A: Aluminum electrolytic capacitors rated at higher voltages than required provide operational margin and typically exhibit lower equivalent series resistance. The 50 V substitutes are fully compatible with 25 V circuit requirements and may improve ripple current handling characteristics.

Q: Why is EKZE500ELL151MJC5S recommended over UHE1H151MPD?

A: EKZE500ELL151MJC5S maintains Active product status, ensuring continued availability for production. UHE1H151MPD's "Not For New Designs" classification indicates discontinued development support. Both parts are electrically compatible, but Active status provides supply chain stability.

Q: Are there differences in ESR (Equivalent Series Resistance) between these parts?

A: The original SXR151M025ST specifies 1.24 Ω ESR at 120 Hz. ESR values are not provided for the substitute parts. However, the Chemi-Con EKZE500ELL151MJC5S specifies 61 mOhms impedance at an unspecified frequency. Direct ESR comparison requires manufacturer datasheets.

Q: How do ripple current ratings affect component selection?

A: Both substitutes provide higher ripple current handling than the original part across 120 Hz and 100 kHz frequency bands. Selection between UHE1H151MPD (532 mA @ 120 Hz) and EKZE500ELL151MJC5S (391.6 mA @ 120 Hz) depends on circuit ripple current demands. The original part is rated at 200 mA @ 120 Hz.

Q: What compliance certifications apply to these parts?

A: All three parts maintain ROHS3 compliance. UHE1H151MPD includes REACH Affected status. EKZE500ELL151MJC5S is REACH Unaffected. Standard through-hole mounting does not present moisture sensitivity concerns for these components.

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