SH100M250ST Equivalent & Substitute Parts

Part Overview

The SH100M250ST is a 10 µF, 250 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete and is used in general-purpose applications requiring through-hole mounting. The SH series represents an older product line no longer in active production. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy equipment repair and manufacturing operations.

Key Parameters

Parameter	Value	Unit
Capacitance	10	µF
Voltage - Rated	250	V
Tolerance	±20%	—
Operating Temperature Range	-25°C to 105°C	—
Lifetime @ Temperature	2000	Hrs @ 105°C
ESR @ 120 Hz	19.98	Ohm
Lead Spacing	0.197" (5.00 mm)	—
Case Diameter	0.394" (10.00 mm)	—
Height - Seated (Max)	0.787" (20.00 mm)	—
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
RoHS Status	ROHS3 Compliant	—
Polarization	Polar	—

Substitute Part Grouping Explanation

Substitution of the SH100M250ST is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 10 µF
Voltage Rating: 250 V
Tolerance: ±20%
Polarization: Polar
Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.394" (10.00 mm)
Mounting Type: Through Hole
Package Type: Radial, Can

Compatible Variation Parameters:

Operating Temperature Range: Substitute must support minimum -25°C to 105°C
Lifetime @ 105°C: Substitute may equal or exceed 2000 hours
ESR: Substitute values within acceptable range for general-purpose applications
Height - Seated: Substitute height must not exceed 0.787" (20.00 mm) for standard PCB compatibility
RoHS Status: ROHS3 Compliant required

Substitutes are classified into two categories:

Direct Equivalents: Parts matching all critical parameters with identical or superior performance characteristics and active product status.

Upgrade Substitutes: Parts exceeding original specifications in voltage rating or lifetime while maintaining all critical mechanical and electrical parameters, enabling enhanced reliability in legacy designs.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ 120 Hz (Ohm)	Lifetime @ 105°C (Hrs)	Height - Seated (mm)	Product Status	RoHS Status
SH100M250ST	Cornell Dubilier Electronics	10	250	±20%	19.98	2000	20.00	Obsolete	ROHS3 Compliant
SEK100M250ST	Cornell Dubilier Electronics	10	250	±20%	19.9	2000	16.00	Active	ROHS3 Compliant
106CKH250M	Cornell Dubilier / Illinois Capacitor	10	250	±20%	24.868	2000	17.50	Active	ROHS3 Compliant
250BXC10MEFC10X16	Rubycon	10	250	±20%	—	10000	18.00	Active	ROHS3 Compliant
250CFX10MEFC10X16	Rubycon	10	250	±20%	—	5000	18.00	Active	ROHS3 Compliant
ECA-2EHG100	Panasonic Electronic Components	10	250	±20%	—	2000	17.00	Active	ROHS3 Compliant
EEU-EB2G100	Panasonic Electronic Components	10	400	±20%	—	5000	22.00	Active	ROHS3 Compliant
EEU-EB2V100	Panasonic Electronic Components	10	350	±20%	—	5000	22.00	Active	ROHS3 Compliant
EEU-ED2G100	Panasonic Electronic Components	10	400	±20%	—	8000	20.00	Active	ROHS3 Compliant
EEU-ED2V100	Panasonic Electronic Components	10	350	±20%	—	8000	20.00	Active	ROHS3 Compliant
EKXG251ELL100MJ20S	Chemi-Con	10	250	±20%	—	8000	20.00	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SEK100M250ST

The SEK100M250ST is the preferred direct equivalent. Manufactured by Cornell Dubilier Electronics, this part maintains identical electrical specifications (10 µF, 250 V, ±20% tolerance, 2000 Hrs @ 105°C) with equivalent ESR performance (19.9 Ohm @ 120 Hz). The SEK100M250ST is in active production status, ensuring long-term supply availability. The reduced height (16.00 mm versus 20.00 mm) provides improved PCB layout flexibility while maintaining all critical mechanical parameters. ROHS3 compliance and MSL rating of 1 (Unlimited) support modern manufacturing environments.

Secondary Recommendation: 106CKH250M

The 106CKH250M from Cornell Dubilier / Illinois Capacitor provides direct electrical equivalence with active product status. Specifications match the original part (10 µF, 250 V, ±20%, 2000 Hrs @ 105°C). Slightly elevated ESR (24.868 Ohm @ 120 Hz) and height (17.50 mm) remain within acceptable ranges for general-purpose applications. High inventory availability (11,447 units) supports immediate procurement.

Tertiary Recommendation: ECA-2EHG100

The ECA-2EHG100 from Panasonic Electronic Components offers direct electrical equivalence (10 µF, 250 V, ±20%, 2000 Hrs @ 105°C) with active product status. Compact height (17.00 mm) and established supply chain support legacy design continuity. This part is suitable for applications where Panasonic component qualification is required.

Enhanced Reliability Options:

For applications requiring extended operational life, the following upgrades provide superior performance:

250BXC10MEFC10X16 (Rubycon): 10,000 hour lifetime at 105°C with active status
250CFX10MEFC10X16 (Rubycon): 5,000 hour lifetime at 105°C with active status
EEU-ED2G100 / EEU-ED2V100 (Panasonic): 8,000 hour lifetime with elevated voltage ratings (400 V / 350 V)

Voltage Upgrade Options:

For designs permitting higher voltage ratings:

EEU-EB2G100 (Panasonic): 400 V rating, 5,000 hour lifetime
EEU-EB2V100 (Panasonic): 350 V rating, 5,000 hour lifetime

All recommended substitutes maintain ROHS3 compliance and through-hole radial can package configuration. Height variations remain within standard PCB design tolerances.

Frequently Asked Questions (FAQ)

Q: Can SEK100M250ST directly replace SH100M250ST without PCB modification?

A: Yes. The SEK100M250ST maintains identical lead spacing (5.00 mm), case diameter (10.00 mm), and electrical specifications. The reduced height (16.00 mm versus 20.00 mm) provides additional clearance and requires no PCB changes. All mounting holes and pad configurations remain compatible.

Q: What is the primary difference between direct equivalents and upgrade substitutes?

A: Direct equivalents (SEK100M250ST, 106CKH250M, ECA-2EHG100) match all original electrical and mechanical specifications with active product status. Upgrade substitutes exceed original specifications in voltage rating or lifetime while maintaining mechanical compatibility, enabling enhanced reliability in legacy designs without PCB redesign.

Q: Are parts with higher voltage ratings (350 V, 400 V) suitable for 250 V applications?

A: Yes. Higher voltage-rated capacitors operate safely in lower voltage applications. The EEU-EB2G100 (400 V), EEU-EB2V100 (350 V), EEU-ED2G100 (400 V), and EEU-ED2V100 (350 V) are electrically compatible with 250 V circuits. However, these parts feature increased height (22.00 mm or 20.00 mm), requiring verification of available PCB clearance before selection.

Q: Why is the SH100M250ST classified as obsolete?

A: The SH series represents an older Cornell Dubilier product line no longer manufactured. The SEK100M250ST is the active replacement within the same manufacturer's portfolio, offering equivalent performance with modern production support.

Q: What does ESR (Equivalent Series Resistance) indicate for capacitor selection?

A: ESR represents internal resistance affecting ripple current handling and thermal performance. Lower ESR values indicate superior high-frequency performance. The SH100M250ST (19.98 Ohm @ 120 Hz) and SEK100M250ST (19.9 Ohm) are closely matched. Slightly elevated ESR in alternatives (106CKH250M at 24.868 Ohm) remains acceptable for general-purpose applications.

Q: Can I use a capacitor with extended lifetime (8,000 or 10,000 hours) in place of the 2,000-hour original?

A: Yes. Extended lifetime ratings indicate superior reliability and thermal stability. Parts such as 250BXC10MEFC10X16 (10,000 hours) and EEU-ED2G100 (8,000 hours) provide enhanced performance margins without electrical incompatibility. These upgrades are particularly beneficial for critical applications or environments with elevated ambient temperatures.

Q: What is the significance of lead spacing and case diameter specifications?

A: Lead spacing (0.197" / 5.00 mm) and case diameter (0.394" / 10.00 mm) determine PCB pad layout and component footprint compatibility. All listed substitutes maintain these dimensions, ensuring direct mechanical compatibility without PCB redesign. Height variations affect available clearance above the PCB but do not impact electrical function.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant certification, meeting environmental and regulatory requirements for modern manufacturing and end-of-life disposal.

Q: Which substitute offers the best balance of availability, cost, and performance?

A: The SEK100M250ST provides optimal balance. As an active Cornell Dubilier product with 4,629 units in stock, it offers immediate availability, direct electrical equivalence, and established supply chain support. The 106CKH250M provides an alternative with higher inventory (11,447 units) and equivalent specifications.

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