SN101M025ST Equivalent & Substitute Parts Reference

Part Overview

The SN101M025ST is a 100 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete product status. Due to obsolescence and limited availability relative to active alternatives, equivalent substitute parts with matching or superior electrical characteristics are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage Rating	25 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bi-Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SN101M025ST is determined by the following criteria:

Primary Matching Parameters:

Capacitance value: 100 µF (exact match required)
Tolerance: ±20% (exact match required)
Package configuration: Radial, Can (exact match required)
Lead spacing: 0.197" (5.00 mm) (exact match required)
Case diameter: 0.394" (10.00 mm) (exact match required)
Mounting type: Through Hole (exact match required)
Operating temperature range: -40°C ~ 85°C (exact match required)
Polarization: Bi-Polar (exact match required)

Voltage Rating Substitution Logic: Substitute parts may have equal or higher voltage ratings than the original 25 V specification. A higher voltage rating maintains backward compatibility in the circuit while providing additional design margin. Lower voltage ratings are not acceptable substitutes.

Lifetime and Reliability: Substitute parts with equal or extended lifetime ratings at 85°C are acceptable. Extended lifetime provides improved reliability characteristics.

Compliance: All substitute parts must maintain ROHS3 compliance status.

Parameter Comparison

Parameter	SN101M025ST (Main)	ECE-A1HN101U (Upgrade)	ECE-A1VN101U (Similar)
Manufacturer	Cornell Dubilier Electronics	Panasonic Electronic Components	Panasonic Electronic Components
Capacitance	100 µF	100 µF	100 µF
Tolerance	±20%	±20%	±20%
Voltage Rating	25 V	50 V	35 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Lifetime @ 85°C	1000 Hrs	2000 Hrs	2000 Hrs
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	0.787" (20.00 mm)	0.787" (20.00 mm)	0.630" (16.00 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ECE-A1HN101U (Upgrade Substitute): This Panasonic part provides a 50 V voltage rating with doubled lifetime (2000 Hrs @ 85°C) compared to the original SN101M025ST. Active product status ensures long-term availability and supply chain continuity. All mechanical and electrical parameters match the original specification. ROHS3 compliance is maintained. This part is suitable for direct replacement in applications where the original 25 V rating is specified, as the higher voltage rating provides additional design margin without circuit modification.

ECE-A1VN101U (Similar Substitute): This Panasonic part provides a 35 V voltage rating with doubled lifetime (2000 Hrs @ 85°C). Active product status ensures availability. Physical height is reduced to 0.630" (16.00 mm) compared to the original 0.787" (20.00 mm), which may provide space savings in compact designs. All other mechanical parameters and electrical characteristics match the original specification. ROHS3 compliance is maintained. This part is suitable for direct replacement where space constraints benefit from the reduced height profile.

Both substitute parts are manufactured by Panasonic Electronic Components, an established supplier of aluminum electrolytic capacitors, and carry active product status with extended lifetime ratings.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1HN101U or ECE-A1VN101U be used as direct replacements for SN101M025ST?

A: Yes. Both parts match all critical parameters: 100 µF capacitance, ±20% tolerance, radial can package, 0.197" (5.00 mm) lead spacing, 0.394" (10.00 mm) case diameter, through-hole mounting, and -40°C ~ 85°C operating temperature range. The higher voltage ratings (50 V and 35 V respectively) are backward compatible with the original 25 V specification.

Q: What is the difference between ECE-A1HN101U and ECE-A1VN101U?

A: The primary differences are voltage rating and physical height. ECE-A1HN101U is rated 50 V with 0.787" (20.00 mm) height, matching the original dimensions. ECE-A1VN101U is rated 35 V with reduced height of 0.630" (16.00 mm). Both have identical 2000 Hrs @ 85°C lifetime. Select ECE-A1HN101U for maximum voltage margin or ECE-A1VN101U for space-constrained applications.

Q: Are there any PCB layout modifications required when substituting these parts?

A: No. Lead spacing (0.197" / 5.00 mm) and case diameter (0.394" / 10.00 mm) are identical across all three parts. PCB footprints and through-hole drilling patterns remain unchanged. ECE-A1VN101U has reduced height, which does not affect PCB layout compatibility.

Q: Why is the SN101M025ST listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Cornell Dubilier Electronics. Active substitute parts from Panasonic ensure design continuity and supply availability.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes. Both ECE-A1HN101U and ECE-A1VN101U are ROHS3 compliant, matching the compliance status of the original SN101M025ST.

Q: What is the ripple current capability of the substitute parts?

A: ECE-A1HN101U supports 250 mA @ 120 Hz and 425 mA @ 10 kHz. ECE-A1VN101U supports 230 mA @ 120 Hz and 391 mA @ 10 kHz. The original SN101M025ST specifies 240 mA @ 120 Hz. Both substitutes meet or exceed low-frequency ripple current requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message