RZW331M1EBK-1012S Equivalent & Substitute Parts

Part Overview

The RZW331M1EBK-1012S is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by SURGE in radial, can package configuration. This component is rated for 7000 hours at 105°C operating temperature and is designed for general-purpose applications requiring reliable energy storage and filtering. The part maintains Active product status with 1027 units currently in stock.

Substitute parts become necessary when the primary manufacturer experiences supply constraints, discontinuation, or when design requirements mandate alternative sourcing options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	25	V
Tolerance	±20%	-
Lifetime @ Temperature	7000 Hrs @ 105°C	-
Operating Temperature Range	-40°C ~ 105°C	-
Lead Spacing	0.197" (5.00mm)	-
Size / Dimension	0.394" Dia (10.00mm)	-
Height - Seated (Max)	0.551" (14.00mm)	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the RZW331M1EBK-1012S is determined by strict adherence to the following parameters:

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 7000 Hrs @ 105°C (exact match required)
Operating Temperature Range: -40°C ~ 105°C (exact match required)
Lead Spacing: 0.197" (5.00mm) (exact match required)
Physical Dimensions: 0.394" Dia × 0.551" Height (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Polarization: Polar (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

All three substitute parts listed meet these critical parameters without exception. Variations in ripple current ratings, impedance values, and product status do not disqualify substitution when all electrical and mechanical parameters align.

Parameter Comparison

Parameter	RZW331M1EBK-1012S (SURGE)	25YXF330MEFC10X12.5 (Rubycon)	25YXH330MEFC10X12.5 (Rubycon)	EKY-250ELL331MJC5S (Chemi-Con)
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage - Rated	25 V	25 V	25 V	25 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ Temp.	7000 Hrs @ 105°C	7000 Hrs @ 105°C	7000 Hrs @ 105°C	7000 Hrs @ 105°C
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size / Dimension	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)
Height - Seated (Max)	0.551" (14.00mm)	0.551" (14.00mm)	0.551" (14.00mm)	0.551" (14.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Ripple Current @ 100 kHz	865 mA	580 mA	Not Specified	865 mA
Impedance	80 mOhms	160 mOhms	80 mOhms	80 mOhms
Product Status	Active	Not For New Designs	Last Time Buy	Active
Current Inventory	1027 Pcs	1017 Pcs	1768 Pcs	12719 Pcs

Engineering Selection Recommendations

Primary Selection: EKY-250ELL331MJC5S (Chemi-Con)

The EKY-250ELL331MJC5S is the preferred substitute based on product status classification. This part maintains Active status, indicating ongoing manufacturer support and availability assurance. It demonstrates identical electrical performance to the primary part with matching impedance (80 mOhms) and ripple current rating (865 mA @ 100 kHz). Inventory availability of 12719 units provides supply security. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment.

Secondary Selection: 25YXH330MEFC10X12.5 (Rubycon)

The 25YXH330MEFC10X12.5 qualifies as a secondary substitute with Last Time Buy product status. This designation indicates the manufacturer has committed to fulfilling existing orders but will not accept new orders beyond a specified cutoff date. Electrical parameters match the primary part exactly, with impedance of 80 mOhms. Current inventory of 1768 units supports near-term procurement requirements. This part is suitable for applications where supply continuity beyond the Last Time Buy window is not critical.

Tertiary Selection: 25YXF330MEFC10X12.5 (Rubycon)

The 25YXF330MEFC10X12.5 carries Not For New Designs status, indicating the manufacturer has discontinued active development and recommends against incorporation into new product designs. While all electrical and mechanical parameters remain compatible, this classification reflects manufacturer intent to phase out the product line. This part is suitable only for legacy system maintenance or repair applications where design revision is not feasible. Impedance specification of 160 mOhms represents a measurable deviation from the primary part, though this does not disqualify substitution based on provided parameters.

Frequently Asked Questions (FAQ)

Q: Can all three substitute parts be used interchangeably with the RZW331M1EBK-1012S?

A: Yes. All three substitute parts meet the critical electrical and mechanical parameters: 330 µF capacitance, 25 V voltage rating, ±20% tolerance, 7000 Hrs @ 105°C lifetime, -40°C to 105°C operating range, 0.197" lead spacing, 0.394" diameter, 0.551" maximum height, through-hole mounting, radial can package, and ROHS3 compliance. Substitution is electrically and mechanically valid for all applications where the primary part is specified.

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

A: Product status reflects manufacturer commitment and supply continuity. Active status (EKY-250ELL331MJC5S) indicates ongoing production and support. Last Time Buy status (25YXH330MEFC10X12.5) indicates the manufacturer will fulfill existing orders through a specified date but will not accept new orders. Not For New Designs status (25YXF330MEFC10X12.5) indicates the manufacturer recommends against incorporation into new product designs. For new designs, Active status parts are preferred. For legacy system support, Last Time Buy and Not For New Designs parts remain functionally valid.

Q: Are there performance differences between the substitute parts?

A: Ripple current and impedance specifications vary among substitutes. The RZW331M1EBK-1012S and EKY-250ELL331MJC5S both specify 865 mA ripple current at 100 kHz and 80 mOhms impedance. The 25YXF330MEFC10X12.5 specifies 580 mA ripple current at 100 kHz and 160 mOhms impedance. The 25YXH330MEFC10X12.5 specifies 80 mOhms impedance with ripple current not specified in provided data. These variations do not affect substitution eligibility based on the critical parameters that determine compatibility.

Q: Do all substitute parts meet regulatory compliance requirements?

A: Yes. All substitute parts are ROHS3 Compliant. The EKY-250ELL331MJC5S and both Rubycon parts carry REACH Unaffected status, confirming no REACH-regulated substances are present. The primary part RZW331M1EBK-1012S does not specify REACH status in provided data but maintains ROHS3 compliance.

Q: Which substitute part offers the best supply availability?

A: The EKY-250ELL331MJC5S (Chemi-Con) offers the highest current inventory at 12719 units, providing the strongest supply position. The 25YXH330MEFC10X12.5 (Rubycon) provides 1768 units, and the 25YXF330MEFC10X12.5 (Rubycon) provides 1017 units. For applications requiring immediate or high-volume procurement, the Chemi-Con part is the optimal choice.

Q: Can the substitute parts be used in existing PCB designs without modification?

A: Yes. All substitute parts maintain identical lead spacing (0.197" / 5.00mm), physical dimensions (0.394" diameter × 0.551" height), and through-hole mounting configuration. No PCB layout modifications are required for substitution.

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