SXR331M063ST

Part Overview

The SXR331M063ST is a 330 µF, 63 V aluminum electrolytic capacitor in radial can configuration manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, necessitating identification of suitable alternative components for ongoing applications. Active substitute parts from current manufacturers (Rubycon and Chemi-Con) provide equivalent electrical characteristics while maintaining compliance with RoHS3 standards.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage Rating	63 V
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Operating Temperature Range	-40°C ~ 105°C
Application Category	General Purpose
Polarization	Polar

Substitute Part Grouping Explanation

Substitution compatibility for the SXR331M063ST is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance value: 330 µF (must be exact)
Tolerance: ±20% (must be equal or tighter)
Voltage rating: 63 V minimum (equal or higher acceptable)
Lead spacing: 0.197" (5.00 mm)
Mounting type: Through Hole
Polarization: Polar
Operating temperature range: -40°C ~ 105°C

Direct Substitutes (63 V Rated): The parts 63YXJ330M12.5X20 (Rubycon YXJ series) and EKYA630ELL331MK20S (Chemi-Con KYA series) are direct substitutes meeting all primary criteria with identical voltage ratings.

Similar Substitute (100 V Rated): The part EKZE101ELL331MK35S (Chemi-Con KZE series) shares identical capacitance, tolerance, lead spacing, and mounting specifications with elevated voltage rating (100 V). This part is acceptable where 63 V operation is required, as the higher voltage rating provides additional design margin.

Parameter Comparison

Parameter	SXR331M063ST	63YXJ330M12.5X20	EKYA630ELL331MK20S	EKZE101ELL331MK35S
Manufacturer	CDE	Rubycon	Chemi-Con	Chemi-Con
Capacitance	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage Rating	63 V	63 V	63 V	100 V
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lifetime @ 105°C	4000 Hrs	10000 Hrs	10000 Hrs	5000 Hrs
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Size / Dimension	0.472" Dia (12.00 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.181" (30.00 mm)	0.866" (22.00 mm)	0.846" (21.50 mm)	1.437" (36.50 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: For direct functional replacement of SXR331M063ST in 63 V applications, select either 63YXJ330M12.5X20 (Rubycon) or EKYA630ELL331MK20S (Chemi-Con). Both components are active products with RoHS3 compliance. The Rubycon part offers extended lifetime at 105°C (10,000 hours versus 4,000 hours original specification), with higher ripple current capability at both low and high frequencies. The Chemi-Con part similarly provides 10,000-hour lifetime with lower ESR characteristics (41 mOhms impedance).

Secondary Option: The EKZE101ELL331MK35S (Chemi-Con, 100 V rating) is applicable for designs where higher voltage margin is acceptable. This part provides superior dynamic performance through lower impedance (36 mOhms) and is suitable for circuits operating at 63 V where component reliability benefit from overvoltage specification is desired.

Compliance Consideration: All substitute parts maintain RoHS3 compliance equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can 63YXJ330M12.5X20 and EKYA630ELL331MK20S be used interchangeably with SXR331M063ST?

A: Yes. Both parts meet the substitution requirements: identical capacitance (330 µF), tolerance (±20%), voltage rating (63 V), lead spacing (5.00 mm), mounting type (through hole), and operating temperature range (-40°C ~ 105°C). Both are active products with RoHS3 certification.

Q: What are the dimensional differences between the original and substitute parts?

A: The original SXR331M063ST has a 12.00 mm diameter and 30.00 mm height. Both direct substitutes (63YXJ330M12.5X20 and EKYA630ELL331MK20S) feature 12.50 mm diameter can with reduced height (22.00 mm and 21.50 mm respectively), providing benefits for PCB layout and board height constraints. The EKZE101ELL331MK35S has the same 12.50 mm diameter with increased height (36.50 mm) due to higher voltage rating.

Q: Is the EKZE101ELL331MK35S (100 V) suitable for a 63 V circuit design?

A: Yes. The 100 V voltage rating of EKZE101ELL331MK35S exceeds the 63 V requirement. Higher voltage-rated capacitors are electrically compatible in lower-voltage applications and may provide improved reliability through additional design margin. All other electrical and mechanical parameters remain compatible.

Q: What is the impact of different ESR and impedance values?

A: The provided substitute parts exhibit lower impedance (41 mOhms for EKYA630ELL331MK20S and 36 mOhms for EKZE101ELL331MK35S) compared to the original specification (320 mOhms @ 120 Hz for SXR331M063ST). Lower impedance improves capacitor performance in high-ripple-current and high-frequency applications, representing an engineering improvement over the original part.

Q: Are packaging format and lead configuration identical across all parts?

A: All parts use radial through-hole packaging with 5.00 mm lead spacing, ensuring PCB footprint compatibility. Physical can dimensions vary slightly; refer to the parameter comparison table for specific dimensional requirements relative to circuit board layout constraints.

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