SS100M050ST Equivalent & Substitute Parts Reference

Part Overview

The SS100M050ST is a 10 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, with 700 pieces currently in stock. The part operates across a temperature range of -40°C to 85°C and is designed for general-purpose applications requiring polar electrolytic capacitor functionality.

Identification of equivalent and substitute parts is necessary due to the obsolete status of the SS100M050ST. Substitute components maintain the core electrical specifications—10 µF capacitance, ±20% tolerance, and 50 V rated voltage—while offering improved availability, extended operational lifetime, or enhanced performance characteristics from active manufacturers.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	10	µF	Critical - must match exactly
Voltage Rating	50	V	Critical - must match or exceed
Tolerance	±20%	%	Critical - must match
Polarization	Polar	-	Critical - must match
Package Type	Radial, Can	-	Critical - must match for PCB compatibility
Lead Spacing	0.079" (2.00 mm)	inches (mm)	Critical - must match for board layout
Mounting Type	Through Hole	-	Critical - must match
Operating Temperature Range	-40°C to 85°C	°C	Critical - must match or exceed
Lifetime @ 85°C	1000 Hrs (minimum)	Hours	Important - longer lifetime acceptable
RoHS Status	ROHS3 Compliant	-	Important - regulatory compliance

Substitute Part Grouping Explanation

Substitution logic for the SS100M050ST is based strictly on electrical and mechanical parameter matching within the aluminum electrolytic capacitor category. All substitute parts maintain identical core specifications:

Critical Matching Parameters:

Capacitance: 10 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package: Radial, Can (exact match required)
Lead Spacing: 0.079" (2.00 mm) (exact match required)
Mounting: Through Hole (exact match required)
Operating Temperature: -40°C to 85°C (exact match required)

Acceptable Variation Parameters:

Lifetime @ 85°C: Minimum 1000 hours; extended lifetime (2000 hours) is acceptable
Physical Height: Variations within radial can package envelope are acceptable if lead spacing and diameter remain constant
ESR (Equivalent Series Resistance): Variations acceptable if not specified as critical in application
Ripple Current: Variations acceptable if application requirements are met

All three substitute parts (SK100M050ST, ECA-1HM100, ECE-A1HKA100) satisfy these substitution criteria and are sourced from established manufacturers with active product status and full RoHS3 compliance.

Parameter Comparison

Parameter	SS100M050ST (Main)	SK100M050ST	ECA-1HM100	ECE-A1HKA100
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Panasonic Electronic Components	Panasonic Electronic Components
Series	SS	SK	M-A	KA
Product Status	Obsolete	Active	Active	Active
Capacitance	10 µF	10 µF	10 µF	10 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage Rating	50 V	50 V	50 V	50 V
Polarization	Polar	Not specified	Polar	Polar
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Lifetime @ 85°C	1000 Hrs	2000 Hrs	2000 Hrs	1000 Hrs
ESR @ 120 Hz	13.27 Ohm	13.27 Ohm	Not specified	Not specified
Lead Spacing	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)
Size / Diameter	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Height - Seated (Max)	0.276" (7.00 mm)	0.512" (13.00 mm)	0.472" (12.00 mm)	0.276" (7.00 mm)
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	700 Pcs In Stock	2496 Pcs In Stock	50201 Pcs In Stock	30734 Pcs In Stock

Engineering Selection Recommendations

SK100M050ST (Cornell Dubilier Electronics)

The SK100M050ST is a direct manufacturer equivalent from Cornell Dubilier Electronics, maintaining identical electrical specifications to the SS100M050ST while offering active product status. This part features doubled operational lifetime (2000 hours at 85°C versus 1000 hours), providing enhanced reliability for extended-use applications. Physical height increases to 0.512" (13.00 mm), requiring verification of available PCB clearance. ESR remains constant at 13.27 Ohm. Selection of SK100M050ST is appropriate for applications requiring continuity within the Cornell Dubilier product line and where increased height does not present layout constraints.

ECA-1HM100 (Panasonic Electronic Components)

The ECA-1HM100 represents a cross-manufacturer substitute from Panasonic, offering the highest inventory availability (50,201 pieces) and extended lifetime (2000 hours at 85°C). Physical height is 0.472" (12.00 mm), intermediate between the main part and SK100M050ST. Ripple current specifications are enhanced (65 mA @ 120 Hz and 110.5 mA @ 10 kHz), indicating superior performance in high-ripple-current applications. ESR data is not provided. Selection is appropriate for high-volume procurement and applications benefiting from increased ripple current capacity.

ECE-A1HKA100 (Panasonic Electronic Components)

The ECE-A1HKA100 is a parametric equivalent from Panasonic with identical physical dimensions to the SS100M050ST (height 0.276" / 7.00 mm), ensuring direct PCB compatibility without layout modification. Operational lifetime matches the main part at 1000 hours at 85°C. Ripple current specifications (35 mA @ 120 Hz and 59.5 mA @ 10 kHz) are lower than ECA-1HM100 but sufficient for general-purpose applications. Selection is appropriate when PCB space constraints require minimal height and direct dimensional compatibility with the original design.

All three substitutes carry ROHS3 compliance and are sourced from manufacturers with active product status, ensuring long-term supply chain stability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the SS100M050ST be directly replaced with any of these substitute parts?

A: All three substitute parts maintain the critical electrical and mechanical parameters required for direct substitution: 10 µF capacitance, ±20% tolerance, 50 V voltage rating, polar polarization, radial can package, 0.079" (2.00 mm) lead spacing, and through-hole mounting. Physical height variations must be evaluated against available PCB clearance. ECE-A1HKA100 provides identical height (0.276" / 7.00 mm) for direct drop-in replacement without layout modification.

Q: What is the difference between the three substitute parts?

A: SK100M050ST and ECA-1HM100 both offer extended lifetime (2000 hours at 85°C) compared to the main part and ECE-A1HKA100 (1000 hours). SK100M050ST maintains Cornell Dubilier manufacturer continuity with height of 0.512" (13.00 mm). ECA-1HM100 offers the highest inventory availability and enhanced ripple current performance with height of 0.472" (12.00 mm). ECE-A1HKA100 provides identical physical dimensions to the original part with height of 0.276" (7.00 mm).

Q: Does increased lifetime affect circuit performance?

A: Extended lifetime (2000 hours versus 1000 hours at 85°C) indicates longer operational endurance under thermal stress but does not alter electrical performance at rated conditions. Capacitance, voltage rating, tolerance, and ESR remain functionally equivalent. Applications requiring extended service life benefit from SK100M050ST or ECA-1HM100.

Q: Are there height restrictions for PCB integration?

A: Physical height varies among substitutes: SS100M050ST and ECE-A1HKA100 are 0.276" (7.00 mm); SK100M050ST is 0.512" (13.00 mm); ECA-1HM100 is 0.472" (12.00 mm). PCB clearance must accommodate the selected substitute. ECE-A1HKA100 requires no layout modification due to identical height to the original part.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All three substitute parts (SK100M050ST, ECA-1HM100, ECE-A1HKA100) carry ROHS3 Compliant certification, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the significance of ESR specifications?

A: Equivalent Series Resistance (ESR) affects ripple current handling and thermal performance. SS100M050ST and SK100M050ST specify 13.27 Ohm ESR at 120 Hz. ECA-1HM100 and ECE-A1HKA100 do not provide ESR data but specify ripple current ratings. Applications with high ripple current requirements should reference ripple current specifications rather than ESR alone.

Q: Which substitute offers the best availability?

A: ECA-1HM100 provides the highest inventory availability at 50,201 pieces in stock, followed by ECE-A1HKA100 (30,734 pieces) and SK100M050ST (2,496 pieces). Availability supports high-volume procurement and supply chain continuity.

Q: Can substitutes be used interchangeably in existing designs?

A: Substitutes are electrically interchangeable when core parameters match (capacitance, voltage, tolerance, polarization, lead spacing). Physical height must be verified against PCB clearance. ECE-A1HKA100 provides direct dimensional compatibility without design modification. SK100M050ST and ECA-1HM100 require clearance verification due to increased height.

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