B41821A5157M Equivalent & Substitute Parts

Part Overview

The B41821A5157M is a 150 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by EPCOS - TDK Electronics. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part is rated for 2000 hours at 85°C and is suitable for general-purpose applications requiring through-hole mounting with 4.60 mm lead spacing.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	25 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Mounting Type	Through Hole
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the B41821A5157M are categorized into two groups based on voltage rating compatibility:

Direct Equivalents (Same Voltage Rating - 25 V):

UPJ1E151MPD (Nichicon)
UPW1E151MPD (Nichicon)

These parts maintain the same 150 µF capacitance, ±20% tolerance, and 25 V voltage rating. They are mechanically compatible with identical lead spacing (4.60 mm) and case diameter (8.00 mm). Selection among direct equivalents is determined by ripple current requirements, impedance specifications, and operating temperature range.

Upgrade Options (Higher Voltage Rating - 35 V):

157KBM035M (Cornell Dubilier / Illinois Capacitor)
EEU-FC1V151 (Panasonic Electronic Components)
UHE1V151MPD (Nichicon)
UPW1V151MPD (Nichicon)

These parts provide the same 150 µF capacitance and ±20% tolerance but with elevated 35 V voltage rating. They maintain mechanical compatibility (4.60 mm lead spacing, 8.00 mm case diameter) and are suitable for applications where higher voltage margin is required. The 35 V rating provides additional safety margin in circuits originally designed for 25 V operation.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp. Range	Ripple Current @ 120 Hz	Lead Spacing	Height (Max)	Product Status
B41821A5157M	EPCOS - TDK	150 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	200 mA	4.60 mm	12.00 mm	Obsolete
UPJ1E151MPD	Nichicon	150 µF	25 V	±20%	3000 Hrs @ 105°C	-55°C ~ 105°C	320 mA	4.60 mm	12.50 mm	Not For New Designs
UPW1E151MPD	Nichicon	150 µF	25 V	±20%	3000 Hrs @ 105°C	-55°C ~ 105°C	360.75 mA	4.60 mm	11.50 mm	Not For New Designs
157KBM035M	Cornell Dubilier / Illinois Capacitor	150 µF	35 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	256 mA	4.60 mm	12.50 mm	Active
EEU-FC1V151	Panasonic Electronic Components	150 µF	35 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	360.8 mA	4.60 mm	12.50 mm	Active
UHE1V151MPD	Nichicon	150 µF	35 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	448 mA	4.60 mm	11.50 mm	Not For New Designs
UPW1V151MPD	Nichicon	150 µF	35 V	±20%	3000 Hrs @ 105°C	-55°C ~ 105°C	360.75 mA	4.60 mm	11.50 mm	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (25 V Applications):

UPW1E151MPD is the preferred direct equivalent. It offers improved ripple current handling (360.75 mA vs. 200 mA), extended lifetime (3000 Hrs @ 105°C vs. 2000 Hrs @ 85°C), and wider operating temperature range (-55°C ~ 105°C). The reduced height (11.50 mm vs. 12.00 mm) provides better board layout compatibility. Both direct equivalents are ROHS3 compliant and maintain identical electrical parameters.

For Upgraded Voltage Margin (35 V Applications):

157KBM035M is recommended for new designs requiring active product status. It provides the longest lifetime rating (7000 Hrs @ 105°C), specified ESR (130 mOhm @ 120 Hz), and active manufacturing status. This part is suitable for applications where extended service life and higher voltage margin are critical.

EEU-FC1V151 is recommended for automotive applications, carrying AEC-Q200 qualification. It offers active product status, high ripple current capability (360.8 mA @ 120 Hz), and automotive-grade reliability.

UHE1V151MPD provides the highest ripple current rating (448 mA @ 120 Hz) among 35 V options, suitable for high-ripple-current applications, though it carries "Not For New Designs" status.

All substitute parts maintain ROHS3 compliance and mechanical compatibility with the original B41821A5157M.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of a 25 V rated capacitor?

A: Yes. A 35 V rated capacitor is electrically compatible with a 25 V circuit. The higher voltage rating provides additional safety margin and does not affect circuit operation. All 35 V upgrade options maintain the same 150 µF capacitance and ±20% tolerance.

Q: What is the difference between direct equivalents and upgrade options?

A: Direct equivalents (UPJ1E151MPD, UPW1E151MPD) maintain the original 25 V voltage rating. Upgrade options (157KBM035M, EEU-FC1V151, UHE1V151MPD, UPW1V151MPD) provide 35 V rating with improved lifetime and ripple current specifications. Selection depends on circuit voltage requirements and performance needs.

Q: Are all substitute parts mechanically compatible?

A: Yes. All substitute parts maintain identical lead spacing (4.60 mm) and case diameter (8.00 mm), ensuring through-hole PCB compatibility. Height variations (11.50 mm to 12.50 mm) are within standard component tolerance and do not affect mounting.

Q: Which substitute part has the best ripple current performance?

A: UHE1V151MPD offers the highest ripple current rating at 448 mA @ 120 Hz. For 25 V applications, UPW1E151MPD provides 360.75 mA @ 120 Hz. Selection should match application ripple current requirements.

Q: What does "Not For New Designs" product status mean?

A: This status indicates the manufacturer is not recommending the part for new circuit designs, though existing inventory remains available. For new designs, select parts with "Active" status: 157KBM035M or EEU-FC1V151.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original B41821A5157M compliance status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message