SH331M050ST Equivalent & Substitute Parts Reference

Part Overview

The SH331M050ST is a 330 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 production support and design continuity. The part serves general-purpose applications requiring through-hole mounting with a 5.00 mm lead spacing and 10.00 mm diameter form factor.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Operating Temperature Range	-40°C ~ 105°C
Lifetime @ 105°C	2000 Hrs
Lead Spacing	0.197" (5.00 mm)
Package Diameter	0.394" (10.00 mm)
Mounting Type	Through Hole, Radial
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SH331M050ST is determined by the following mandatory parameters:

Core Electrical Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Mechanical Parameters:

Lead Spacing: 0.197" (5.00 mm) (exact match required)
Package Diameter: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole, Radial (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (required for regulatory compatibility)

All substitute parts listed meet these mandatory criteria. Secondary parameters such as ESR, ripple current ratings, lifetime at temperature, and operating temperature range may vary within acceptable engineering tolerances for the application category.

Parameter Comparison

Parameter	SH331M050ST (Main)	337CKE050M	EEU-EB1H331	UPW1H331MPD	ECA-1HHG331
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier / Illinois Capacitor	Panasonic Electronic Components	Nichicon	Panasonic Electronic Components
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage Rating	50 V	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Lifetime @ 105°C	2000 Hrs	2000 Hrs	10000 Hrs	5000 Hrs	2000 Hrs
ESR @ 120 Hz	480 mOhm	502 mOhm	Not Specified	Not Specified	Not Specified
Ripple Current @ 120 Hz	535 mA	590 mA	293 mA	669.5 mA	410 mA
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Package Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	0.787" (20.00 mm)	0.689" (17.50 mm)	0.866" (22.00 mm)	0.787" (20.00 mm)	0.669" (17.00 mm)
Product Status	Obsolete	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Same Lifetime): The 337CKE050M (Cornell Dubilier / Illinois Capacitor, CKE series) provides direct electrical and mechanical equivalence with identical 2000 Hrs @ 105°C lifetime specification. This part maintains active product status and is available in high inventory (15,063 pcs). The 337CKE050M is suitable for direct replacement in existing designs without performance degradation.

Extended Lifetime Option: The EEU-EB1H331 (Panasonic Electronic Components, EB-A series) offers extended operational life at 10,000 Hrs @ 105°C, providing enhanced reliability for applications requiring longer service intervals. This part is active and widely available (3,518 pcs). Height dimension increases to 0.866" (22.00 mm); verify PCB layout clearance before selection.

Alternative with Enhanced Ripple Current: The UPW1H331MPD (Nichicon, UPW series) provides 5,000 Hrs @ 105°C lifetime with superior ripple current handling (669.5 mA @ 120 Hz, 1.03 A @ 100 kHz). Extended operating temperature range (-55°C ~ 105°C) supports wider environmental applications. Product status is "Not For New Designs"; use only for legacy system support or where existing qualification exists.

Compact Form Factor: The ECA-1HHG331 (Panasonic Electronic Components, NHG-A series) maintains 2000 Hrs @ 105°C lifetime with reduced height (0.669" / 17.00 mm), enabling space-constrained PCB layouts. Active product status with 7,042 pcs inventory. Extended operating temperature range (-55°C ~ 105°C) provides additional environmental margin.

All substitute parts are ROHS3 compliant and maintain identical lead spacing (5.00 mm) and package diameter (10.00 mm) for through-hole PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the SH331M050ST?

A: All listed substitute parts meet the mandatory electrical and mechanical parameters: 330 µF capacitance, 50 V voltage rating, ±20% tolerance, 5.00 mm lead spacing, and 10.00 mm package diameter. Physical height varies; verify PCB layout clearance before installation. All parts are ROHS3 compliant.

Q: What is the difference between the substitute parts?

A: The primary differences are lifetime rating at 105°C (2,000 to 10,000 hours), physical height (0.669" to 0.866"), ripple current capacity, and product status. The 337CKE050M provides direct equivalence. The EEU-EB1H331 offers extended lifetime. The UPW1H331MPD provides enhanced ripple current but is not recommended for new designs. The ECA-1HHG331 offers compact height.

Q: Which substitute should I select for new product designs?

A: For new designs, select from active-status parts: 337CKE050M (direct equivalent), EEU-EB1H331 (extended lifetime), or ECA-1HHG331 (compact form factor). Avoid UPW1H331MPD, which carries "Not For New Designs" status.

Q: Are there height restrictions I should consider?

A: Yes. The SH331M050ST height is 0.787" (20.00 mm). The 337CKE050M is shorter at 0.689" (17.50 mm), the ECA-1HHG331 is shortest at 0.669" (17.00 mm), and the EEU-EB1H331 is taller at 0.866" (22.00 mm). Verify PCB layout and component clearance before selection.

Q: Do all substitute parts have the same ESR and ripple current specifications?

A: No. ESR and ripple current vary across manufacturers and series. The 337CKE050M provides comparable ESR (502 mOhm vs. 480 mOhm). Other parts do not specify ESR. Ripple current ranges from 293 mA to 1.03 A depending on frequency and part selection. Verify application requirements before substitution.

Q: What is the inventory status of these parts?

A: All substitute parts are in stock: 337CKE050M (15,063 pcs), EEU-EB1H331 (3,518 pcs), UPW1H331MPD (7,621 pcs), and ECA-1HHG331 (7,042 pcs). The original SH331M050ST has 1,124 pcs available but is obsolete.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original SH331M050ST.

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