LPW103M1EN45V-W Equivalent & Substitute Parts

Part Overview

The LPW103M1EN45V-W is a 10000 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as obsolete, though 931 pieces remain in stock as new original inventory. The LPW series represents an earlier generation of general-purpose aluminum electrolytic capacitors designed for through-hole mounting applications.

Due to the obsolete status of the LPW103M1EN45V-W, equivalent substitute parts from active product lines are necessary for new designs, production continuity, and long-term component availability. Suitable alternatives exist within CDE's current SLPX and 380LX series, which maintain identical electrical ratings while offering improved performance characteristics and extended product lifecycle support.

Key Parameters

Parameter	Value	Unit
Capacitance	10000	µF
Voltage - Rated	25	V
Tolerance	±20%	—
ESR @ 120 Hz	75	mOhm
Lifetime @ 85°C	1000	Hrs
Operating Temperature Range	-40 to 85	°C
Lead Spacing	10.00	mm
Can Diameter	22.00	mm
Height - Seated (Max)	45.00	mm
Mounting Type	Through Hole	—
Package / Case	Radial, Can - Snap-In	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the LPW103M1EN45V-W is determined by strict equivalence in the following electrical and mechanical parameters:

Mandatory Equivalence Criteria:

Capacitance: 10000 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)
Lead Spacing: 10.00 mm (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)

Performance Parameters (Allowable Variation):

ESR @ 120 Hz: Substitute parts may have lower ESR values (improved performance)
Lifetime @ 85°C: Substitute parts may have extended lifetime (improved performance)
Can Diameter: Substitute parts may have larger diameter (mechanical accommodation required)
Height - Seated: Substitute parts may have different heights (mechanical accommodation required)
Ripple Current: Substitute parts may have higher ripple current ratings (improved performance)

All substitute parts listed are from active product lines (SLPX and 380LX series) and maintain full RoHS3 compliance and REACH unaffected status.

Parameter Comparison

Part Number	Series	Status	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ 120 Hz (mOhm)	Lifetime @ 85°C (Hrs)	Can Dia (mm)	Height (mm)	Lead Spacing (mm)	Inventory (Pcs)
LPW103M1EN45V-W	LPW	Obsolete	10000	25	±20%	75	1000	22.00	45.00	10.00	931
SLPX103M025A5P3	SLPX	Active	10000	25	±20%	60	3000	22.00	35.00	10.00	33580
380LX103M025H032	380LX	Active	10000	25	±20%	58	3000	22.00	37.00	10.00	3625
SLPX103M025E1P3	SLPX	Active	10000	25	±20%	60	3000	30.00	25.00	10.00	18612
SLPX103M025C3P3	SLPX	Active	10000	25	±20%	60	3000	25.00	30.00	10.00	800
380LX103M025J022	380LX	Active	10000	25	±20%	58	3000	25.00	32.00	10.00	926
380LX103M025K012	380LX	Active	10000	25	±20%	136	3000	30.00	27.00	10.00	934

Engineering Selection Recommendations

Primary Recommendation: SLPX103M025A5P3

The SLPX103M025A5P3 is the preferred direct substitute for the LPW103M1EN45V-W. This part maintains identical can diameter (22.00 mm) and lead spacing (10.00 mm) as the original, minimizing PCB layout modifications. The height reduction from 45.00 mm to 35.00 mm provides improved mechanical clearance in most applications. Performance improvements include 20% lower ESR (60 mOhm vs. 75 mOhm) and tripled lifetime rating (3000 Hrs vs. 1000 Hrs at 85°C). The SLPX series is active with extensive inventory availability (33,580 pieces in stock). Full RoHS3 compliance and REACH unaffected status are maintained.

Secondary Recommendation: 380LX103M025H032

The 380LX103M025H032 offers the lowest ESR among available substitutes (58 mOhm) and maintains the original 22.00 mm can diameter. Height increases to 37.00 mm, requiring verification of available board space. This part is suitable for applications where ESR minimization is critical. Active product status with 3,625 pieces in inventory ensures supply continuity.

Alternative Options for Space-Constrained Designs:

SLPX103M025E1P3: Compact height of 25.00 mm with 30.00 mm diameter. Suitable for applications with severe vertical space limitations. Inventory: 18,612 pieces.
380LX103M025J022: Balanced profile with 32.00 mm height and 25.00 mm diameter. Limited inventory (926 pieces).

Not Recommended: 380LX103M025K012

The 380LX103M025K012 exhibits significantly elevated ESR (136 mOhm vs. 75 mOhm original), representing performance degradation rather than improvement. This part should be avoided unless specific design constraints mandate its selection.

All recommended substitutes are RoHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original component.

Frequently Asked Questions (FAQ)

Q: Can SLPX103M025A5P3 be used as a direct drop-in replacement for LPW103M1EN45V-W?

A: Yes, with minor PCB layout verification. The SLPX103M025A5P3 maintains identical lead spacing (10.00 mm) and can diameter (22.00 mm). The height reduction from 45.00 mm to 35.00 mm typically improves mechanical clearance. Verify available vertical space on the PCB to confirm compatibility.

Q: What is the significance of ESR differences between substitute parts?

A: ESR (Equivalent Series Resistance) directly affects ripple current handling and heat generation. Lower ESR values indicate improved performance. The SLPX103M025A5P3 and 380LX103M025H032 both provide 20-23% ESR reduction compared to the original LPW103M1EN45V-W, resulting in lower operating temperatures and improved reliability in high-ripple-current applications.

Q: Why does the LPW103M1EN45V-W have a 1000-hour lifetime while substitutes offer 3000 hours?

A: The LPW series represents an earlier generation of aluminum electrolytic capacitor technology. Modern SLPX and 380LX series incorporate improved electrolyte formulations and construction techniques that extend operational lifetime at rated temperature. The tripled lifetime rating reflects advances in capacitor manufacturing and materials science.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SLPX and 380LX series) are RoHS3 compliant and REACH unaffected, maintaining full regulatory equivalence with the original LPW103M1EN45V-W.

Q: What is the difference between SLPX103M025A5P3 and SLPX103M025E1P3?

A: Both parts share identical electrical specifications (10000 µF, 25 V, ±20%, 60 mOhm ESR, 3000 Hrs @ 85°C). The primary difference is mechanical: SLPX103M025A5P3 has a 22.00 mm diameter and 35.00 mm height, while SLPX103M025E1P3 has a 30.00 mm diameter and 25.00 mm height. Select based on available PCB space and mounting constraints.

Q: Can 380LX103M025K012 be used as a substitute?

A: 380LX103M025K012 maintains electrical equivalence in capacitance, voltage, and tolerance. However, its ESR of 136 mOhm represents an 81% increase over the original 75 mOhm specification. This elevated ESR results in higher heat generation and reduced ripple current handling capability. Use only if design constraints prevent selection of lower-ESR alternatives.

Q: What inventory considerations should guide part selection?

A: SLPX103M025A5P3 offers the highest inventory availability (33,580 pieces), ensuring long-term supply security. SLPX103M025E1P3 (18,612 pieces) and 380LX103M025H032 (3,625 pieces) provide adequate stock for most applications. SLPX103M025C3P3 (800 pieces) and 380LX103M025J022 (926 pieces) have limited inventory and should be reserved for applications where their specific mechanical profiles are required.

Q: Are there any temperature or operating condition differences between substitute parts?

A: All substitute parts maintain the identical operating temperature range of -40°C to 85°C as the original LPW103M1EN45V-W. Lifetime ratings are specified at 85°C. No differences in temperature performance exist among the recommended substitutes.

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