SLPX151M350A3P3 Equivalent & Substitute Parts

Part Overview

The SLPX151M350A3P3 is a 150 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is rated for general-purpose applications with a 3000-hour lifetime at 85°C and an operating temperature range of -25°C to 85°C. The part is currently active in production status with 633 pieces in stock.

Equivalent and substitute parts are identified based on matching core electrical parameters: capacitance value (150 µF), tolerance (±20%), package type (radial, can snap-in), lead spacing (0.394" / 10.00mm), physical dimensions (0.866" diameter, 1.260" height), mounting type (through-hole), and compliance certifications (RoHS3, REACH Unaffected, EAR99).

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	150	µF	Critical - must match exactly
Tolerance	±20%	-	Critical - must match or be tighter
Voltage - Rated	350 / 400	V	Critical - substitute must equal or exceed
Package / Case	Radial, Can - Snap-In	-	Critical - must match for mechanical fit
Lead Spacing	0.394" (10.00mm)	-	Critical - must match for PCB compatibility
Size / Dimension	0.866" Dia (22.00mm)	-	Critical - must match for mechanical clearance
Height - Seated (Max)	1.260" (32.00mm)	-	Critical - must match for vertical clearance
Mounting Type	Through Hole	-	Critical - must match assembly method
Lifetime @ Temp.	3000 / 5000	Hrs	Important - affects reliability in thermal conditions
Operating Temperature	-25°C ~ 85°C / -25°C ~ 105°C	-	Important - must support application environment
RoHS Status	RoHS3 Compliant	-	Critical - regulatory requirement
REACH Status	REACH Unaffected	-	Critical - regulatory requirement

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on substitution logic:

Parametric Equivalent Parts match all critical electrical and mechanical parameters of the main part SLPX151M350A3P3:

Capacitance: 150 µF
Tolerance: ±20%
Voltage Rating: 350 V
Package: Radial, Can - Snap-In
Lead Spacing: 0.394" (10.00mm)
Dimensions: 0.866" Dia × 1.260" Height
Mounting: Through Hole
Compliance: RoHS3, REACH Unaffected

Upgrade Substitute Parts exceed the voltage rating (400 V instead of 350 V) while maintaining all other critical parameters. These parts provide enhanced voltage margin and are mechanically and electrically compatible. Upgrade substitutes may also feature improved thermal performance (higher temperature ratings or extended lifetime ratings).

All substitute parts maintain identical package geometry, lead spacing, and mounting characteristics, ensuring direct PCB compatibility without layout modifications.

Parameter Comparison

Parameter	SLPX151M350A3P3 (CDE)	LLS2V151MELZ (Nichicon)	LGN2V151MELZ30 (Nichicon)	400USG150MEFCSN22X30 (Rubycon)	400VXH150MEFCSN22X30 (Rubycon)	B43508A9157M000 (EPCOS - TDK)
Manufacturer	Cornell Dubilier Electronics	Nichicon	Nichicon	Rubycon	Rubycon	EPCOS - TDK Electronics
Series	SLPX	LLS	LGN	USG	VXH	B43508
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF	150 µF
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	350 V	350 V	350 V	400 V	400 V	400 V
Lead Spacing	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Size / Dimension	0.866" Dia (22.00mm)	0.866" Dia (22.00mm)	0.866" Dia (22.00mm)	0.866" Dia (22.00mm)	0.866" Dia (22.00mm)	0.866" Dia (22.00mm)
Height - Seated (Max)	1.260" (32.00mm)	1.260" (32.00mm)	1.260" (32.00mm)	1.260" (32.00mm)	1.260" (32.00mm)	1.260" (32.00mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Lifetime @ Temp.	3000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 85°C	5000 Hrs @ 105°C	3000 Hrs @ 105°C
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 105°C	-25°C ~ 85°C	-25°C ~ 105°C	-40°C ~ 105°C
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	633	1125	929	1124	273982	1360

Engineering Selection Recommendations

Parametric Equivalent Selection (350 V Rating)

LLS2V151MELZ (Nichicon) is a direct parametric equivalent to SLPX151M350A3P3. Both parts share identical electrical specifications (150 µF, ±20%, 350 V), thermal performance (3000 hours @ 85°C), operating temperature range (-25°C to 85°C), and mechanical dimensions. This part is suitable for direct replacement in applications where the original CDE part is unavailable. Nichicon LLS series maintains RoHS3 compliance and REACH unaffected status.

LGN2V151MELZ30 (Nichicon) is also a parametric equivalent at 350 V rating but features enhanced thermal performance with 3000-hour lifetime at 105°C and extended operating temperature range to 105°C. This part is suitable for applications requiring improved thermal margin while maintaining the same voltage rating and mechanical compatibility.

Upgrade Substitute Selection (400 V Rating)

400USG150MEFCSN22X30 (Rubycon) provides a 400 V voltage rating upgrade while maintaining all mechanical and electrical compatibility parameters. This part is suitable for applications where increased voltage margin is beneficial. Rubycon USG series maintains 3000-hour lifetime at 85°C with RoHS3 compliance.

400VXH150MEFCSN22X30 (Rubycon) offers the highest performance upgrade with 400 V rating, 5000-hour lifetime at 105°C, and extended operating temperature to 105°C. This part is suitable for demanding applications requiring both voltage margin and extended thermal performance. Inventory availability is significantly higher (273,982 pieces).

B43508A9157M000 (EPCOS - TDK Electronics) provides 400 V rating with extended operating temperature range (-40°C to 105°C) and 3000-hour lifetime at 105°C. This part is suitable for applications requiring low-temperature operation capability. EPCOS - TDK Electronics maintains RoHS3 compliance and REACH unaffected status.

All substitute parts are active products with confirmed inventory availability and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can LLS2V151MELZ replace SLPX151M350A3P3 directly?

A: Yes. LLS2V151MELZ is a parametric equivalent with identical capacitance (150 µF), tolerance (±20%), voltage rating (350 V), package type (radial, can snap-in), lead spacing (10.00mm), and physical dimensions (22.00mm diameter, 32.00mm height). Both parts support the same operating temperature range (-25°C to 85°C) and thermal performance (3000 hours @ 85°C). No circuit modifications or PCB layout changes are required.

Q: What is the difference between parametric equivalent and upgrade substitute parts?

A: Parametric equivalent parts (LLS2V151MELZ, LGN2V151MELZ30) match the original part's voltage rating of 350 V. Upgrade substitute parts (400USG150MEFCSN22X30, 400VXH150MEFCSN22X30, B43508A9157M000) feature a higher voltage rating of 400 V. All parts maintain identical mechanical compatibility and capacitance specifications. Upgrade substitutes provide additional voltage margin and may offer extended thermal performance.

Q: Are all substitute parts mechanically compatible with the original PCB design?

A: Yes. All substitute parts maintain identical lead spacing (0.394" / 10.00mm), can diameter (0.866" / 22.00mm), and seated height (1.260" / 32.00mm). All parts use radial, can snap-in packaging with through-hole mounting. No PCB modifications are required for mechanical compatibility.

Q: Which substitute part offers the best thermal performance?

A: 400VXH150MEFCSN22X30 (Rubycon) offers the highest thermal performance with 5000-hour lifetime at 105°C and extended operating temperature range to 105°C. This part is suitable for applications operating at elevated ambient temperatures or with high ripple current conditions.

Q: Can I use a 400 V rated part in a circuit designed for 350 V?

A: Yes. A 400 V rated capacitor can be used in a 350 V circuit. The voltage rating indicates the maximum voltage the capacitor can safely withstand. Using a higher-rated part provides additional voltage margin and does not negatively affect circuit operation. All electrical and mechanical parameters remain compatible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (LLS2V151MELZ, LGN2V151MELZ30, 400USG150MEFCSN22X30, 400VXH150MEFCSN22X30, B43508A9157M000) are RoHS3 compliant and REACH unaffected. All parts meet current regulatory requirements for electronic component manufacturing and use.

Q: What is the difference between LGN2V151MELZ30 and LLS2V151MELZ?

A: Both parts are Nichicon 150 µF, ±20%, 350 V aluminum electrolytic capacitors with identical mechanical dimensions and lead spacing. LGN2V151MELZ30 features enhanced thermal performance with 3000-hour lifetime at 105°C and extended operating temperature to 105°C, compared to LLS2V151MELZ which is rated for 3000 hours at 85°C with operating temperature to 85°C. LGN series is suitable for higher-temperature applications.

Q: Which substitute part has the highest inventory availability?

A: 400VXH150MEFCSN22X30 (Rubycon) has the highest inventory availability with 273,982 pieces in stock, compared to 633 pieces for the original SLPX151M350A3P3. This part is suitable for high-volume production requirements.

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