SH100M450ST Equivalent & Substitute Parts

Part Overview

The SH100M450ST is a 10 µF, 450 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is rated for general-purpose applications with a 2000-hour lifetime at 105°C and an operating temperature range of -25°C to 105°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved availability and performance characteristics.

Key Parameters

Parameter	Value
Capacitance	10 µF
Voltage Rating	450 V
Tolerance	±20%
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Operating Temperature Range	-25°C to 105°C
Application	General Purpose
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SH100M450ST is determined by strict equivalence in the following electrical and mechanical parameters:

Electrical Equivalence Requirements:

Capacitance: 10 µF (exact match)
Voltage Rating: 450 V (exact match)
Tolerance: ±20% (exact match)
Polarization: Polar (exact match)

Mechanical Equivalence Requirements:

Lead Spacing: 0.197" (5.00 mm) (exact match)
Mounting Type: Through Hole (exact match)
Package Type: Radial, Can (exact match)

Compliance Requirements:

RoHS3 Compliant (maintained across all substitutes)

Substitute parts are grouped into two categories: Direct Substitutes and Similar Parts. Direct Substitutes maintain all electrical and mechanical parameters while offering extended lifetime ratings and improved ripple current handling. Similar Parts maintain all critical parameters but feature dimensional variations in can diameter that may require PCB layout verification.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Can Diameter	Height (Max)	Lifetime @ 105°C	Status
SH100M450ST	Cornell Dubilier Electronics	10 µF	450 V	±20%	0.197" (5.00 mm)	0.512" (13.00 mm)	0.984" (25.00 mm)	2000 Hrs	Obsolete
450BXC10MEFC12.5X16	Rubycon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.709" (18.00 mm)	12000 Hrs	Active
450BXC10MEFC12.5X20	Rubycon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	12000 Hrs	Active
450LLE10MEFC12.5X20	Rubycon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	20000 Hrs	Active
EEU-EB2W100	Panasonic Electronic Components	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	5000 Hrs	Active
EEU-ED2W100	Panasonic Electronic Components	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.787" (20.00 mm)	10000 Hrs	Active
EEU-EE2W100	Panasonic Electronic Components	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	10000 Hrs	Active
EKXG451ELL100MK20S	Chemi-Con	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.787" (20.00 mm)	10000 Hrs	Obsolete
UCA2W100MHD	Nichicon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	12000 Hrs	Obsolete
UCS2W100MHD	Nichicon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	10000 Hrs	Active
450BXC10MEFC10X20	Rubycon	10 µF	450 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.866" (22.00 mm)	10000 Hrs	Active

Engineering Selection Recommendations

Direct Substitutes (Recommended Priority Order):

450LLE10MEFC12.5X20 (Rubycon) – Active status with extended 20000-hour lifetime at 105°C. Maintains all electrical and mechanical parameters. ROHS3 compliant with REACH unaffected status. Highest reliability for long-term applications.
EEU-EE2W100 (Panasonic Electronic Components) – Active status with 10000-hour lifetime. Maintains all electrical and mechanical parameters. ROHS3 compliant with REACH unaffected status. Highest inventory availability (1814 units).
450BXC10MEFC12.5X20 (Rubycon) – Active status with 12000-hour lifetime. Maintains all electrical and mechanical parameters. ROHS3 compliant with REACH unaffected status. High inventory availability (1031 units).
EEU-ED2W100 (Panasonic Electronic Components) – Active status with 10000-hour lifetime. Maintains all electrical and mechanical parameters. ROHS3 compliant with REACH unaffected status. MSL rating of 1 (Unlimited).
UCS2W100MHD (Nichicon) – Active status with 10000-hour lifetime. Maintains all electrical and mechanical parameters. ROHS3 compliant with REACH unaffected status.

Alternative Substitutes (Secondary Options):

450BXC10MEFC12.5X16 (Rubycon) – Active status with 12000-hour lifetime. Maintains all electrical and mechanical parameters but features reduced height (0.709" vs. 0.984"). Suitable for space-constrained applications.
EEU-EB2W100 (Panasonic Electronic Components) – Active status with 5000-hour lifetime. Maintains all electrical and mechanical parameters. Highest inventory availability (12943 units). Suitable for applications with lower lifetime requirements.

Similar Parts (Dimensional Variation):

450BXC10MEFC10X20 (Rubycon) – Active status with 10000-hour lifetime. Maintains all electrical and mechanical parameters except can diameter (0.394" vs. 0.512"). Requires PCB layout verification for lead hole spacing compatibility.

Obsolete Alternatives (Not Recommended for New Designs):

EKXG451ELL100MK20S (Chemi-Con) – Obsolete status
UCA2W100MHD (Nichicon) – Obsolete status

Frequently Asked Questions (FAQ)

Q: Can the SH100M450ST be directly replaced with any of the listed substitutes?

A: Yes. All Direct Substitute parts maintain identical electrical specifications (10 µF, 450 V, ±20% tolerance) and mechanical parameters (lead spacing 0.197", through-hole radial can package). The primary differences are can diameter, height, and lifetime ratings. Direct substitutes are electrically and mechanically compatible without circuit modification.

Q: What is the difference between Direct Substitutes and Similar Parts?

A: Direct Substitutes maintain the original can diameter of 0.512" (13.00 mm). Similar Parts, such as 450BXC10MEFC10X20, feature a reduced can diameter of 0.394" (10.00 mm). While electrically equivalent, Similar Parts require verification that PCB hole spacing and component placement accommodate the dimensional change.

Q: Why do substitute parts have different lifetime ratings?

A: Lifetime ratings (measured in hours at 105°C) reflect the internal construction and materials used by each manufacturer. Extended lifetime ratings (12000 to 20000 hours) indicate improved internal design and materials compared to the original 2000-hour rating. Selection should be based on application requirements and expected operating conditions.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the original SH100M450ST specification.

Q: What is the significance of the can diameter difference in similar parts?

A: Can diameter affects the physical footprint on the PCB. The original SH100M450ST has a 0.512" (13.00 mm) diameter. Most Direct Substitutes have a 0.492" (12.50 mm) diameter, which is slightly smaller and generally compatible with existing PCB layouts. The Similar Part 450BXC10MEFC10X20 has a 0.394" (10.00 mm) diameter, requiring explicit verification of PCB hole spacing and component placement clearances.

Q: Which substitute offers the best long-term reliability?

A: The 450LLE10MEFC12.5X20 (Rubycon) offers the highest lifetime rating at 20000 hours at 105°C, providing extended operational reliability for demanding applications.

Q: Can I use an obsolete substitute part as a replacement?

A: Obsolete parts such as EKXG451ELL100MK20S and UCA2W100MHD are not recommended for new designs or long-term production. Active-status alternatives should be prioritized to ensure continued availability and supply chain stability.

Q: What inventory considerations should I account for?

A: EEU-EB2W100 (Panasonic) offers the highest inventory availability at 12943 units. EEU-EE2W100 (Panasonic) provides 1814 units with extended lifetime. 450BXC10MEFC10X20 (Rubycon) offers 6100 units with reduced can diameter. Selection should balance availability with application requirements.

Q: Are there any REACH or compliance differences between substitutes?

A: All Direct Substitutes maintain ROHS3 compliance. Most are marked as REACH Unaffected. EEU-EB2W100 does not specify REACH status but maintains ROHS3 compliance. Verify specific compliance documentation for your application requirements.

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