SXR331M035ST Equivalent & Substitute Parts

Part Overview

The SXR331M035ST is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in radial, can package configuration. This component is classified as obsolete, requiring identification of equivalent and substitute parts for ongoing production and maintenance applications. The part is rated for general-purpose use with a 4000-hour lifetime at 105°C and operates across the temperature range of -40°C to 105°C. Due to its obsolete status, equivalent alternatives from active manufacturers are necessary for design continuity and component sourcing.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	35	V
Tolerance	±20%	-
ESR @ 120Hz	480	mOhm
Lifetime @ 105°C	4000	Hrs
Operating Temperature Range	-40 to 105	°C
Ripple Current @ 120 Hz	430	mA
Ripple Current @ 100 kHz	860	mA
Lead Spacing	5.00	mm
Diameter	10.00	mm
Height (Max)	20.00	mm
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SXR331M035ST is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 35 V minimum (equal or higher acceptable)
Tolerance: ±20% (standard tolerance match)
Polarization: Polar (radial configuration)
Lead Spacing: 5.00 mm (0.197 inches)
Diameter: 10.00 mm (0.394 inches)
Mounting Type: Through Hole
Package: Radial, Can

Substitution Categories:

Direct Equivalents (35 V Rating): Parts meeting all primary criteria with 35 V rated voltage are direct replacements. These include 35YXJ330M10X12.5 (Rubycon), EEU-FM1V331B (Panasonic), EEU-FM1V331 (Panasonic), and EKZE350ELL331MJ16S (Chemi-Con).

Voltage Upgrades (50 V Rating): Parts rated at 50 V with identical capacitance, tolerance, lead spacing, and diameter are functional substitutes. Higher voltage rating provides additional design margin. These include EEU-EB1H331 (Panasonic) and UPW1H331MPD (Nichicon).

All substitute parts maintain ROHS3 compliance and through-hole radial can package configuration.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ 105°C (Hrs)	ESR / Impedance (mOhm)	Height (mm)	Product Status
SXR331M035ST	Cornell Dubilier Electronics	330	35	±20%	4000	480	20.00	Obsolete
35YXJ330M10X12.5	Rubycon	330	35	±20%	10000	80	14.00	Active
EEU-FM1V331B	Panasonic Electronic Components	330	35	±20%	4000	26	17.50	Active
EEU-FM1V331	Panasonic Electronic Components	330	35	±20%	4000	26	17.50	Active
EKZE350ELL331MJ16S	Chemi-Con	330	35	±20%	4000	38	17.50	Active
EEU-EB1H331	Panasonic Electronic Components	330	50	±20%	10000	-	22.00	Active
UPW1H331MPD	Nichicon	330	50	±20%	5000	90	20.00	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (35 V Applications):

Select from active-status direct equivalents: EEU-FM1V331, EEU-FM1V331B, EKZE350ELL331MJ16S, or 35YXJ330M10X12.5. All maintain 35 V rating, ±20% tolerance, 5.00 mm lead spacing, and 10.00 mm diameter. EEU-FM1V331 and EEU-FM1V331B (Panasonic FM-A series) offer the lowest impedance at 26 mOhms and are available in high inventory (14,280 and 75,615 units respectively). The 35YXJ330M10X12.5 (Rubycon YXJ series) provides extended lifetime of 10,000 hours at 105°C with reduced height of 14.00 mm, suitable for space-constrained applications.

For Voltage-Upgraded Applications (50 V Tolerance):

EEU-EB1H331 (Panasonic EB-A series) is the recommended upgrade option. It maintains 330 µF capacitance, ±20% tolerance, and identical lead spacing and diameter. The 50 V rating provides additional design margin for circuits with voltage transients. Lifetime extends to 10,000 hours at 105°C. Product status is active with 3,518 units in stock.

Avoid for New Designs:

UPW1H331MPD (Nichicon UPW series) carries product status "Not For New Designs" and should be used only for legacy system maintenance where exact form-factor matching is required.

Compliance Verification:

All recommended substitutes are ROHS3 compliant and maintain through-hole radial can package configuration. Lead spacing of 5.00 mm and diameter of 10.00 mm are consistent across all options, ensuring PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SXR331M035ST be replaced with a 50 V rated capacitor?

A: Yes. EEU-EB1H331 and UPW1H331MPD are 50 V rated substitutes with identical 330 µF capacitance, ±20% tolerance, and mechanical dimensions. Higher voltage rating does not affect circuit operation in 35 V applications and provides additional safety margin. However, verify circuit design does not depend on specific voltage derating characteristics.

Q: What is the difference between direct equivalents and voltage upgrades?

A: Direct equivalents (35YXJ330M10X12.5, EEU-FM1V331, EEU-FM1V331B, EKZE350ELL331MJ16S) maintain the original 35 V rating and are pin-for-pin compatible. Voltage upgrades (EEU-EB1H331, UPW1H331MPD) are rated at 50 V and provide additional design margin but may have different physical heights. All maintain identical lead spacing and diameter.

Q: Does height variation affect PCB compatibility?

A: Lead spacing (5.00 mm) and diameter (10.00 mm) are identical across all substitutes, ensuring PCB footprint compatibility. Height variations (14.00 mm to 22.00 mm) do not affect electrical function but may impact clearance in space-constrained enclosures. Verify available vertical clearance before selection.

Q: Which substitute offers the best performance characteristics?

A: EEU-FM1V331 (Panasonic FM-A series) offers the lowest impedance at 26 mOhms and highest ripple current capacity (1.253 A @ 120 Hz, 1.79 A @ 100 kHz). For extended lifetime applications, 35YXJ330M10X12.5 (Rubycon YXJ series) provides 10,000 hours at 105°C with compact height of 14.00 mm.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitutes are ROHS3 compliant. The SXR331M035ST is also ROHS3 compliant, ensuring regulatory consistency across replacement options.

Q: What is the significance of product status "Not For New Designs"?

A: UPW1H331MPD carries this status, indicating Nichicon has discontinued active promotion for new applications. This part remains available for legacy system maintenance and repair but should not be selected for new product designs. Prefer active-status alternatives for long-term supply assurance.

Q: Can capacitance tolerance affect circuit operation?

A: All substitutes maintain ±20% tolerance matching the original SXR331M035ST. Circuits designed for the original part tolerance will operate within specification with any substitute. Verify circuit design does not require tighter tolerance than ±20%.

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