B41042A5157M Equivalent & Substitute Parts

Part Overview

The B41042A5157M is a 150 µF, 25 V aluminum electrolytic capacitor in radial can package manufactured by EPCOS - TDK Electronics. This component is rated for 3000 hours at 105°C and is designed for general-purpose applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new design alternatives.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime	3000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the B41042A5157M are classified based on the following substitution criteria:

Direct Equivalents (Same Electrical & Mechanical Specifications): Parts matching 150 µF capacitance, 25 V voltage rating, ±20% tolerance, 3000 Hrs @ 105°C lifetime, identical lead spacing (4.60 mm), case diameter (8.00 mm), and through-hole radial can package.

Upgrade Parts (Higher Voltage Rating): Parts with 150 µF capacitance, 35 V voltage rating, ±20% tolerance, 3000 Hrs @ 105°C lifetime, and identical mechanical dimensions. These provide higher voltage margin while maintaining the same physical footprint and capacitance.

Parametric Equivalents (Same Electrical Specifications, Minor Mechanical Variations): Parts matching 150 µF capacitance, 25 V voltage rating, ±20% tolerance, 3000 Hrs @ 105°C lifetime, with identical lead spacing and case diameter but minor height variations within acceptable PCB assembly tolerances.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Case Dia	Height (Max)	Impedance	Product Status	RoHS Status
B41042A5157M	EPCOS - TDK Electronics	150 µF	25 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.512" (13.00 mm)	430 mOhms	Obsolete	ROHS3 Compliant
UPJ1E151MPD	Nichicon	150 µF	25 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.492" (12.50 mm)	260 mOhms	Not For New Designs	ROHS3 Compliant
157KXM035M	Cornell Dubilier / Illinois Capacitor	150 µF	35 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.512" (13.00 mm)	220 mOhms	Active	ROHS3 Compliant
ELXV250ELL151MH12D	Chemi-Con	150 µF	25 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.531" (14.60 mm)	200 mOhms	Active	ROHS3 Compliant
ELXY250ELL151MH12D	Chemi-Con	150 µF	25 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.531" (14.60 mm)	170 mOhms	Active	ROHS3 Compliant
ELXZ350ELL151MH12D	Chemi-Con	150 µF	35 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.531" (14.60 mm)	120 mOhms	Active	ROHS3 Compliant
ELXZ350ELL151MH12S	Chemi-Con	150 µF	35 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.531" (14.60 mm)	120 mOhms	Active	ROHS3 Compliant
UPM1E151MPD	Nichicon	150 µF	25 V	±20%	3000 Hrs	0.315" (8.00 mm)	0.512" (13.00 mm)	160 mOhms	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating): UPJ1E151MPD (Nichicon) and UPM1E151MPD (Nichicon) provide parametric equivalence at 25 V. Both are marked "Not For New Designs," indicating they are legacy products suitable for maintenance and repair applications only. ELXV250ELL151MH12D and ELXY250ELL151MH12D (Chemi-Con) are active products with AEC-Q200 automotive qualification, making them preferred for new designs requiring 25 V operation.

For Upgraded Voltage Margin: 157KXM035M (Cornell Dubilier / Illinois Capacitor), ELXZ350ELL151MH12D, and ELXZ350ELL151MH12S (Chemi-Con) provide 35 V rating while maintaining 150 µF capacitance and identical physical footprint. These are active products suitable for new designs. The Chemi-Con variants include AEC-Q200 automotive qualification.

Product Status Considerations: Active products (Cornell Dubilier, Chemi-Con) are recommended for new designs. Legacy products marked "Not For New Designs" (Nichicon UPJ and UPM series) are appropriate for sustaining engineering and field replacements only.

Frequently Asked Questions (FAQ)

Q: Can UPJ1E151MPD replace B41042A5157M directly? A: Yes. UPJ1E151MPD matches the electrical specifications (150 µF, 25 V, ±20%, 3000 Hrs @ 105°C) and mechanical dimensions (0.315" diameter, 4.60 mm lead spacing, through-hole radial can). Height is 0.492" versus 0.512" for the original, which is acceptable for PCB assembly. However, UPJ1E151MPD is marked "Not For New Designs," so it is suitable for replacement applications only.

Q: What is the advantage of using 157KXM035M or ELXZ350ELL151MH12D? A: These parts provide 35 V rating instead of 25 V while maintaining 150 µF capacitance and identical physical footprint. The higher voltage rating provides additional safety margin in circuits with voltage transients or design tolerance stack-up. Both are active products suitable for new designs.

Q: Are the Chemi-Con parts (ELXV, ELXY, ELXZ series) compatible with the original B41042A5157M footprint? A: Yes. All Chemi-Con parts maintain the same lead spacing (4.60 mm), case diameter (0.315"), and through-hole radial can package. Height varies slightly (0.531" maximum for ELXV, ELXY, ELXZ versus 0.512" for the original), but this is within standard PCB assembly tolerances and does not affect electrical performance or mechanical fit.

Q: Which substitute part is recommended for automotive applications? A: ELXV250ELL151MH12D, ELXY250ELL151MH12D, ELXZ350ELL151MH12D, and ELXZ350ELL151MH12S all carry AEC-Q200 automotive qualification. For 25 V operation, use ELXV250ELL151MH12D or ELXY250ELL151MH12D. For 35 V operation, use ELXZ350ELL151MH12D or ELXZ350ELL151MH12S.

Q: What is the difference between ELXZ350ELL151MH12D and ELXZ350ELL151MH12S? A: Both parts are electrically and mechanically identical (150 µF, 35 V, 3000 Hrs @ 105°C, AEC-Q200). The suffix difference (D versus S) indicates a packaging or manufacturing variant. Electrical performance and physical dimensions are equivalent.

Q: Can I use UPM1E151MPD for new designs? A: UPM1E151MPD is marked "Not For New Designs." It is suitable for replacement and sustaining engineering applications only. For new designs, use active products: ELXV250ELL151MH12D, ELXY250ELL151MH12D (25 V), or 157KXM035M, ELXZ350ELL151MH12D, ELXZ350ELL151MH12S (35 V).

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