157LBA400M2CD Equivalent & Substitute Parts Reference

Part Overview

The 157LBA400M2CD is a 150 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBA series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting with a 10.00 mm lead spacing. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, extended lead times, or application-specific performance upgrades.

Key Parameters

Parameter	Value	Unit
Capacitance	150	µF
Voltage - Rated	400	V
Tolerance	±20%	-
ESR @ 120Hz	1.65786	Ohm
Lifetime @ Temperature	2000 Hrs @ 85°C	-
Operating Temperature Range	-25°C ~ 85°C	-
Lead Spacing	10.00	mm
Diameter	25.00	mm
Height - Seated (Max)	32.00	mm
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 157LBA400M2CD are categorized into two groups based on electrical and mechanical compatibility:

Direct Equivalent (400V Rating):

B43231B9157M000 (EPCOS - TDK Electronics, B43231 series)

This part maintains the 400 V rated voltage, 150 µF capacitance, ±20% tolerance, and identical mechanical dimensions (10.00 mm lead spacing, 25.40 mm diameter, 32.00 mm height). Operating temperature range, polarization, and package type are equivalent. This substitution requires no circuit redesign.

Upgraded Alternatives (450V Rating):

381LQ151M450J022 (Cornell Dubilier Electronics, 381LQ series)
450MXH150MEFCSN25X30 (Rubycon, MXH series)
450VXG150MEFCSN25X30 (Rubycon, VXG series)
450VXH150MEFCSN25X30 (Rubycon, VXH series)
B43508B5157M000 (EPCOS - TDK Electronics, B43508 series)
B43634B5157M000 (EPCOS - TDK Electronics, B43634 series)
B43640B5157M000 (EPCOS - TDK Electronics, B43640 series)
LGX2W151MELA30 (Nichicon, LGX series)

These parts feature 450 V rated voltage, maintaining 150 µF capacitance and ±20% tolerance. All share identical lead spacing (10.00 mm), diameter (25.00 mm), and height (32.00 mm). Upgraded parts offer enhanced performance through higher voltage ratings, extended lifetime ratings, or improved ESR characteristics. These substitutions are suitable for applications where the 400 V specification can accommodate a higher voltage rating without circuit modification.

Key Parameters Determining Substitution:

Capacitance: 150 µF (fixed)
Tolerance: ±20% (fixed)
Lead Spacing: 10.00 mm (fixed)
Diameter: 25.00 mm (fixed)
Height: 32.00 mm (fixed)
Package Type: Radial, Can - Snap-In (fixed)
Mounting Type: Through Hole (fixed)
Polarization: Polar (fixed)
Voltage Rating: 400 V (direct) or 450 V (upgraded)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ Frequency	Lifetime @ Temp	Operating Temp Range	Lead Spacing (mm)	Diameter (mm)	Height (mm)	RoHS Status
157LBA400M2CD	Cornell Dubilier / Illinois Capacitor	LBA	150	400	±20%	1.65786 Ohm @ 120Hz	2000 Hrs @ 85°C	-25°C ~ 85°C	10.00	25.00	32.00	ROHS3 Compliant
B43231B9157M000	EPCOS - TDK Electronics	B43231	150	400	±20%	-	2000 Hrs @ 85°C	-25°C ~ 85°C	10.00	25.40	32.00	ROHS3 Compliant
381LQ151M450J022	Cornell Dubilier Electronics	381LQ	150	450	±20%	1.216 Ohm @ 120Hz	2000 Hrs @ 105°C	-25°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
450MXH150MEFCSN25X30	Rubycon	MXH	150	450	±20%	-	2000 Hrs @ 105°C	-25°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
450VXG150MEFCSN25X30	Rubycon	VXG	150	450	±20%	-	5000 Hrs @ 105°C	-25°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
450VXH150MEFCSN25X30	Rubycon	VXH	150	450	±20%	-	5000 Hrs @ 105°C	-25°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
B43508B5157M000	EPCOS - TDK Electronics	B43508	150	450	±20%	820 mOhm @ 100Hz	3000 Hrs @ 105°C	-40°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
B43634B5157M000	EPCOS - TDK Electronics	B43634	150	450	±20%	700 mOhm @ 100Hz	8000 Hrs @ 85°C	-25°C ~ 85°C	10.00	25.00	32.00	ROHS3 Compliant
B43640B5157M000	EPCOS - TDK Electronics	B43640	150	450	±20%	640 mOhm @ 100Hz	2000 Hrs @ 105°C	-40°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant
LGX2W151MELA30	Nichicon	LGX	150	450	±20%	-	5000 Hrs @ 105°C	-25°C ~ 105°C	10.00	25.00	32.00	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection:

B43231B9157M000 is the direct equivalent for 157LBA400M2CD. Both parts maintain identical electrical specifications (150 µF, 400 V, ±20% tolerance, 2000 Hrs @ 85°C) and mechanical compatibility (10.00 mm lead spacing, 25.00 mm diameter, 32.00 mm height). This substitution requires no circuit modification and is suitable for direct replacement in existing designs. Both parts are Active status and ROHS3 compliant.

Upgraded Alternative Selection:

Upgraded 450 V alternatives are suitable when circuit design permits higher voltage ratings. Selection among upgraded options depends on application-specific requirements:

B43634B5157M000 offers extended lifetime (8000 Hrs @ 85°C) with lowest ESR (700 mOhm @ 100Hz) and is suitable for applications requiring maximum reliability at standard operating temperatures.
450VXH150MEFCSN25X30 and 450VXG150MEFCSN25X30 provide extended lifetime (5000 Hrs @ 105°C) with higher operating temperature capability (-25°C ~ 105°C), suitable for thermal stress environments.
B43640B5157M000 offers extended operating temperature range (-40°C ~ 105°C) with low ESR (640 mOhm @ 100Hz) and is suitable for applications requiring wide temperature operation.
LGX2W151MELA30 provides extended lifetime (5000 Hrs @ 105°C) with higher ripple current capability at high frequency (1.2584 A @ 50 kHz), suitable for high-frequency switching applications.

All substitute parts are Active status and ROHS3 compliant. Selection should be based on circuit voltage tolerance, thermal environment, and ripple current requirements.

Frequently Asked Questions (FAQ)

Q: Can B43231B9157M000 be used as a direct replacement for 157LBA400M2CD?

A: Yes. B43231B9157M000 is a direct equivalent with identical capacitance (150 µF), voltage rating (400 V), tolerance (±20%), lifetime (2000 Hrs @ 85°C), and mechanical dimensions (10.00 mm lead spacing, 25.00 mm diameter, 32.00 mm height). No circuit modification is required.

Q: What is the difference between 400 V and 450 V rated substitutes?

A: The 157LBA400M2CD is rated for 400 V maximum. Upgraded 450 V alternatives provide higher voltage margin and are suitable for circuits designed to operate at or below 400 V. The 450 V rating does not affect circuit operation but provides additional safety margin. Upgraded parts also offer improved performance characteristics such as lower ESR, extended lifetime, or wider operating temperature ranges.

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

A: Yes. All substitute parts maintain identical lead spacing (10.00 mm), diameter (25.00 mm), and height (32.00 mm). All are radial, can-style snap-in packages with through-hole mounting. Direct PCB footprint compatibility is confirmed.

Q: Which substitute offers the lowest ESR?

A: B43640B5157M000 offers the lowest ESR at 640 mOhm @ 100Hz. B43634B5157M000 provides 700 mOhm @ 100Hz. Both are suitable for applications requiring minimal impedance.

Q: Which substitute supports the widest operating temperature range?

A: B43508B5157M000 and B43640B5157M000 both support -40°C ~ 105°C operating temperature range, extending below the original part's -25°C lower limit.

Q: What is the difference between Rubycon MXH and VXG/VXH series?

A: 450MXH150MEFCSN25X30 provides 2000 Hrs @ 105°C lifetime. 450VXG150MEFCSN25X30 and 450VXH150MEFCSN25X30 both provide extended 5000 Hrs @ 105°C lifetime. All three maintain identical mechanical compatibility and 450 V rating.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of 157LBA400M2CD.

Q: Which substitute is recommended for high-frequency ripple current applications?

A: LGX2W151MELA30 supports 1.2584 A @ 50 kHz ripple current, the highest among substitutes at high frequency. 450VXH150MEFCSN25X30 supports 1.568 A @ 10 kHz. Selection depends on specific frequency requirements.

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