SLP101M385A3P3 Equivalent & Substitute Parts

Part Overview

The SLP101M385A3P3 is a 100 µF, 385 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active product status and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 3000 hours at 105°C. Substitute parts are identified based on matching capacitance, tolerance, package type, mounting configuration, and mechanical dimensions while accommodating variations in voltage rating, ESR characteristics, and operational lifetime specifications.

Key Parameters

Parameter	Value	Unit
Capacitance	100	µF
Voltage - Rated	385	V
Tolerance	±20%	-
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Lead Spacing	0.394" (10.00 mm)	-
Size / Dimension	0.866" Dia (22.00 mm)	-
Height - Seated (Max)	1.260" (32.00 mm)	-
Operating Temperature	-25°C ~ 105°C	-
Lifetime @ Temp.	3000	Hrs @ 105°C
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SLP101M385A3P3 are qualified based on the following criteria:

Mandatory Matching Parameters:

Capacitance: 100 µF (exact match required)
Tolerance: ±20% (exact match required)
Package / Case: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Size / Dimension: 0.866" Dia (22.00 mm) (exact match required)
Height - Seated (Max): 1.260" (32.00 mm) (exact match required)
Polarization: Polar (exact match required)

Allowable Variation Parameters:

Voltage - Rated: 400 V to 450 V (equal to or greater than 385 V)
ESR (Equivalent Series Resistance): Variations permitted; lower ESR values indicate improved performance
Lifetime @ Temp.: 3000 Hrs to 7000 Hrs @ 105°C (equal to or greater than 3000 Hrs)
Operating Temperature: -40°C to -25°C minimum; 105°C maximum (equal to or broader range)
Manufacturer: Cornell Dubilier Electronics, Rubycon, EPCOS - TDK Electronics, Chemi-Con, Nichicon

All substitute parts maintain identical mechanical footprints and electrical compatibility within the specified voltage and thermal performance envelope.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ Frequency	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Product Status
SLP101M385A3P3	Cornell Dubilier Electronics	100	385	±20%	3.317 Ω @ 120 Hz	3000	-25 ~ 105	Active
381LX101M450H022	Cornell Dubilier Electronics	100	450	±20%	-	3000	-25 ~ 105	Active
400MXC100MEFCSN22X30	Rubycon	100	400	±20%	-	3000	-25 ~ 105	Not For New Designs
400VXG100MEFCSN22X30	Rubycon	100	400	±20%	-	5000	-25 ~ 105	Active
B43508A5107M000	EPCOS - TDK Electronics	100	450	±20%	1.23 Ω @ 100 Hz	3000	-40 ~ 105	Active
B43644A5107M000	EPCOS - TDK Electronics	100	450	±20%	970 mΩ @ 100 Hz	5000	-40 ~ 105	Active
ELXM401VSN101MP30S	Chemi-Con	100	400	±20%	-	7000	-25 ~ 105	Active
LGN2W101MELZ30	Nichicon	100	450	±20%	-	3000	-25 ~ 105	Active
LGX2W101MELZ30	Nichicon	100	450	±20%	-	5000	-25 ~ 105	Active

Engineering Selection Recommendations

Active Status Substitutes (Preferred for New Designs):

The following parts maintain Active product status and are suitable for new design implementations:

381LX101M450H022 (Cornell Dubilier Electronics): Voltage-upgraded variant from the same manufacturer with 450 V rating and identical mechanical specifications. Maintains 3000-hour lifetime at 105°C.
400VXG100MEFCSN22X30 (Rubycon): 400 V rated part with extended 5000-hour lifetime at 105°C. Active status with higher ripple current capability at both low and high frequencies.
B43508A5107M000 (EPCOS - TDK Electronics): 450 V rated with lower ESR (1.23 Ω @ 100 Hz) compared to the main part. Extended operating temperature range to -40°C. Active status.
B43644A5107M000 (EPCOS - TDK Electronics): 450 V rated with superior ESR performance (970 mΩ @ 100 Hz) and extended 5000-hour lifetime. Broadest operating temperature range (-40°C to 105°C). Active status.
ELXM401VSN101MP30S (Chemi-Con): 400 V rated with longest operational lifetime of 7000 hours at 105°C. Active status with RoHS compliance.
LGN2W101MELZ30 (Nichicon): 450 V rated with 3000-hour lifetime matching the main part. Active status.
LGX2W101MELZ30 (Nichicon): 450 V rated with extended 5000-hour lifetime. Active status.

Discontinued Status Substitute (Not Recommended for New Designs):

400MXC100MEFCSN22X30 (Rubycon): Marked as "Not For New Designs." This part is retained in the substitute list for legacy system support and repair applications only.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance or equivalent RoHS certification. REACH status is consistent across all parts (REACH Unaffected). Moisture Sensitivity Level is rated at 1 (Unlimited) or Not Applicable, indicating no special handling requirements.

Frequently Asked Questions (FAQ)

Q1: Can I use a 400 V rated capacitor in place of the 385 V SLP101M385A3P3?

A: Yes. A 400 V rated capacitor provides adequate voltage margin for the 385 V application. The substitute part must maintain all other parameters: 100 µF capacitance, ±20% tolerance, identical package dimensions, and through-hole snap-in mounting.

Q2: What is the advantage of selecting a 450 V substitute over a 400 V substitute?

A: A 450 V rated capacitor provides additional voltage headroom above the 385 V requirement, which can extend component life in applications with voltage transients or ripple. However, 400 V rated parts are equally valid substitutes if the application voltage profile remains stable.

Q3: Does ESR (Equivalent Series Resistance) affect substitutability?

A: ESR variations do not prevent substitution. Lower ESR values (such as 970 mΩ in the B43644A5107M000) indicate improved high-frequency performance and reduced heat generation. Higher ESR values remain acceptable if the application does not require optimized ripple current handling.

Q4: Can I use a substitute with a longer lifetime rating (5000 or 7000 hours) in place of the 3000-hour rated main part?

A: Yes. Extended lifetime ratings (5000 or 7000 hours at 105°C) are direct improvements and do not affect compatibility. These substitutes provide enhanced reliability margins for the same application.

Q5: Are there mechanical compatibility concerns when substituting between manufacturers?

A: No. All qualified substitutes maintain identical lead spacing (0.394" / 10.00 mm), can diameter (0.866" / 22.00 mm), and seated height (1.260" / 32.00 mm). Snap-in mounting is consistent across all parts. PCB footprints and mounting hardware remain unchanged.

Q6: Why is the 400MXC100MEFCSN22X30 marked "Not For New Designs"?

A: This Rubycon part is retained in the substitute list for legacy system repair and maintenance only. For new design implementations, select from the Active status alternatives listed above.

Q7: What is the difference between the LGN2W101MELZ30 and LGX2W101MELZ30 from Nichicon?

A: Both parts are 100 µF, 450 V, snap-in aluminum electrolytic capacitors with identical mechanical dimensions. The primary difference is operational lifetime: LGN2W101MELZ30 is rated for 3000 hours at 105°C, while LGX2W101MELZ30 is rated for 5000 hours at 105°C. Select based on required system lifetime.

Q8: Can I substitute the SLP101M385A3P3 with a part rated for a lower voltage (e.g., 350 V)?

A: No. Substitute parts must be rated for 385 V or higher. A lower voltage rating would not provide adequate safety margin and is not permitted.

Q9: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance or equivalent RoHS certification status. REACH compliance is consistent across all alternatives.

Q10: Which substitute offers the best overall performance for demanding applications?

A: The B43644A5107M000 (EPCOS - TDK Electronics) combines the lowest ESR (970 mΩ @ 100 Hz), longest operational lifetime (5000 hours at 105°C), and broadest operating temperature range (-40°C to 105°C). This part is recommended for applications requiring optimized ripple current handling and extended service life.

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