Equivalent & Substitute Parts for SXR102M050ST

Part Overview

The SXR102M050ST is a 1000 µF, 50 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 production continuity. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 5000 hours at 105°C, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	1000 µF
Voltage Rating	50 V
Tolerance	±20%
ESR @ 120 Hz	130 mOhm
Lifetime @ 105°C	5000 Hrs
Operating Temperature Range	-40°C to 105°C
Ripple Current @ 120 Hz	832.6 mA
Ripple Current @ 100 kHz	1.81 A
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Height (Seated Max)	1.260" (32.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SXR102M050ST is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance: 1000 µF (exact match required)
Voltage Rating: 50 V minimum (equal or higher acceptable)
Tolerance: ±20% (standard tolerance match)
Polarization: Polar (radial aluminum electrolytic)
Lead Spacing: 0.295" (7.50 mm) (mechanical compatibility)
Case Diameter: 0.630" (16.00 mm) (footprint compatibility)
Mounting Type: Through Hole (assembly compatibility)
Package Type: Radial, Can (form factor match)

Secondary Compatibility Parameters:

Operating Temperature Range: -40°C to 105°C minimum
Lifetime @ 105°C: 5000 hours minimum
RoHS3 Compliance: Required for modern supply chains

Substitute parts are grouped into three categories based on performance characteristics relative to the original specification:

Direct Equivalents: Parts meeting all primary criteria with equivalent or superior electrical performance at the same voltage rating (50 V).

Upgrade Substitutes: Parts exceeding the original specification through higher voltage ratings (63 V) or extended lifetime ratings (8000 hours), providing enhanced reliability margins while maintaining mechanical and electrical compatibility.

Similar Substitutes: Parts meeting primary criteria with variations in ripple current handling or impedance characteristics, suitable for applications where performance headroom exists.

Parameter Comparison

Parameter	SXR102M050ST (Original)	EKZE500ELL102ML25S	ELXV500ELL102ML30S	EEU-FC1J102U	ELXY500ELL102ML30S	EEU-FM1H102
Manufacturer	Cornell Dubilier	Chemi-Con	Chemi-Con	Panasonic	Chemi-Con	Panasonic
Capacitance	1000 µF	1000 µF	1000 µF	1000 µF	1000 µF	1000 µF
Voltage Rating	50 V	50 V	50 V	63 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Lifetime @ 105°C	5000 Hrs	5000 Hrs	5000 Hrs	5000 Hrs	8000 Hrs	7000 Hrs
Operating Temp Range	-40°C to 105°C	-40°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-40°C to 105°C
Ripple Current @ 120 Hz	832.6 mA	1.806 A	1.29 A	2.003 A	1.29 A	2.49 A
Ripple Current @ 100 kHz	1.81 A	3.01 A	2.15 A	2.67 A	2.15 A	3.32 A
Impedance	Not specified	21 mOhms	29 mOhms	43 mOhms	30 mOhms	16 mOhms
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height (Seated Max)	1.260" (32.00 mm)	1.043" (26.50 mm)	1.260" (32.00 mm)	1.240" (31.50 mm)	1.240" (31.50 mm)	1.063" (27.00 mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes	Yes
AEC-Q200 Rating	Not specified	Not specified	Yes	Yes	Yes	Not specified

Engineering Selection Recommendations

EKZE500ELL102ML25S (Chemi-Con KZE Series)

This direct equivalent provides identical electrical specifications at 50 V with superior ripple current handling (1.806 A @ 120 Hz versus 832.6 mA). The reduced height (1.043" versus 1.260") offers improved PCB layout flexibility. Product status is active with full RoHS3 compliance. Suitable for general-purpose applications requiring drop-in replacement with enhanced thermal performance margins.

ELXV500ELL102ML30S (Chemi-Con LXV Series)

This direct equivalent maintains the original height specification (1.260") and operating temperature range (-40°C to 105°C). Extended temperature range to -55°C and AEC-Q200 automotive qualification provide additional design margin. Recommended for applications requiring automotive-grade reliability without voltage upgrade requirements.

EEU-FC1J102U (Panasonic FC Series) – Upgrade Substitute

This upgrade substitute increases voltage rating to 63 V while maintaining 1000 µF capacitance and 5000-hour lifetime. The higher voltage rating provides enhanced safety margin in circuits with voltage transients or tolerance stack-up. AEC-Q200 qualification and extended temperature range (-55°C to 105°C) support automotive and industrial applications. Height specification (1.240") remains compatible with original PCB layouts.

ELXY500ELL102ML30S (Chemi-Con LXY Series) – Upgrade Substitute

This upgrade substitute extends lifetime to 8000 hours at 105°C, providing 60% longer operational life than the original specification. Maintains 50 V rating with AEC-Q200 automotive qualification and -55°C to 105°C operating range. Recommended for applications requiring extended service life or harsh environmental conditions.

EEU-FM1H102 (Panasonic FM-A Series)

This similar substitute offers superior ripple current handling (2.49 A @ 120 Hz) and lowest impedance (16 mOhms) among all candidates. Reduced height (1.063") supports compact PCB designs. Product status is active with RoHS3 compliance. Suitable for applications with high AC ripple current requirements or where thermal performance is critical.

Frequently Asked Questions (FAQ)

Q: Can I use a 63 V rated capacitor (EEU-FC1J102U) in place of the 50 V original?

A: Yes. Higher voltage ratings are electrically compatible with lower voltage circuit requirements. The 63 V part operates safely in 50 V applications and provides additional transient protection margin. No circuit modification is required.

Q: What is the significance of the height differences among substitute parts?

A: Height variations (ranging from 1.043" to 1.260") affect PCB layout clearance. Parts with reduced height (EKZE500ELL102ML25S at 1.043", EEU-FM1H102 at 1.063") offer improved component density. Parts matching original height (ELXV500ELL102ML30S at 1.260") ensure identical mounting envelope. Verify PCB clearance requirements before selection.

Q: Why do some substitutes have AEC-Q200 ratings while others do not?

A: AEC-Q200 is an automotive qualification standard. Parts with this rating (ELXV500ELL102ML30S, EEU-FC1J102U, ELXY500ELL102ML30S) meet automotive reliability and testing requirements. Parts without this rating (EKZE500ELL102ML25S, EEU-FM1H102) are suitable for general-purpose and industrial applications. Select based on application requirements.

Q: What does the extended lifetime rating (8000 hours for ELXY500ELL102ML30S) mean?

A: Lifetime rating specifies the expected operational duration at maximum rated temperature (105°C) before capacitance degradation exceeds tolerance limits. The 8000-hour rating provides 60% longer service life than the original 5000-hour specification, reducing replacement frequency in long-life applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing and supply.

Q: How do ripple current ratings affect component selection?

A: Ripple current rating indicates the maximum AC current the capacitor can handle without exceeding temperature limits. Higher ripple current capability (EEU-FM1H102 at 2.49 A @ 120 Hz) supports applications with significant AC current content. Lower ripple current (ELXV500ELL102ML30S at 1.29 A @ 120 Hz) is adequate for applications with minimal AC ripple. Match ripple current rating to circuit requirements.

Q: Can I interchange parts with different impedance values?

A: Impedance differences affect high-frequency performance and noise filtering characteristics. Lower impedance (EEU-FM1H102 at 16 mOhms) provides superior high-frequency filtering. Higher impedance (EEU-FC1J102U at 43 mOhms) is acceptable in applications with less stringent high-frequency requirements. Verify circuit performance requirements before substitution.

Q: What is the lead spacing significance?

A: Lead spacing (0.295" or 7.50 mm) is standardized across all parts, ensuring mechanical compatibility with existing PCB through-hole patterns. All substitute parts maintain this specification for direct PCB mounting without modification.

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