B41868R8337M Equivalent & Substitute Parts

Part Overview

The B41868R8337M is a 330 µF, 63 V aluminum electrolytic capacitor in radial, can package manufactured by EPCOS - TDK Electronics. This component is designed for automotive applications requiring through-hole mounting with a 10.00 mm lead spacing and 20.00 mm diameter form factor. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing circuit designs while meeting or exceeding the original electrical specifications.

Substiute Parts

B41868R8337M

EPCOS - TDK ElectronicsIn Stock: 1000B41868R8337M Datasheet

Current PartRFQ

UBX1K331MHL

NichiconIn Stock: 909UBX1K331MHL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B41868R8337M is determined by the following critical parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: Minimum 63 V (equal or higher voltage rating acceptable)
• Tolerance: ±20% (standard tolerance for aluminum electrolytic capacitors)
• Polarization: Polar (radial configuration)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Radial, Can (form factor compatibility)
• Lead Spacing: Compatible with 10.00 mm PCB hole patterns
• Automotive Compliance: RoHS3 and REACH compliance required

The UBX1K331MHL from Nichicon meets these substitution criteria with a higher voltage rating (80 V) and improved thermal lifetime (2000 Hrs @ 150°C), providing enhanced reliability margins for automotive applications.

Parameter Comparison

Engineering Selection Recommendations

The UBX1K331MHL is a direct functional substitute for the B41868R8337M based on the following criteria:

• Both components are ROHS3 compliant and REACH unaffected, meeting automotive regulatory requirements
• The substitute maintains identical capacitance (330 µF) and tolerance (±20%)
• The higher voltage rating (80 V vs. 63 V) provides additional safety margin in circuit operation
• The substitute demonstrates superior thermal performance with 2000 Hrs lifetime at 150°C compared to 1000 Hrs for the original part
• Increased ripple current capability (1.48 A @ 100 kHz) exceeds the original specification (680 mA @ 100 kHz)
• The substitute is currently in active production status, ensuring long-term availability for automotive applications

Physical form factor differences exist: the UBX1K331MHL has a smaller diameter (16.00 mm vs. 20.00 mm) and reduced lead spacing (7.50 mm vs. 10.00 mm). PCB layout modification is required to accommodate these dimensional changes.

Frequently Asked Questions (FAQ)

Q: Can the UBX1K331MHL be used as a direct pin-for-pin replacement?

A: No. While electrically compatible, the UBX1K331MHL has different physical dimensions and lead spacing (7.50 mm vs. 10.00 mm). PCB modification is necessary to accommodate the substitute component.

Q: Does the higher voltage rating (80 V) of the substitute affect circuit operation?

A: No. A higher voltage rating does not degrade performance in circuits designed for 63 V operation. The substitute provides additional voltage margin and improved reliability.

Q: Are both components suitable for automotive applications?

A: Yes. Both the B41868R8337M and UBX1K331MHL are specified for automotive applications and meet ROHS3 compliance requirements.

Q: What is the significance of the improved thermal lifetime in the substitute?

A: The UBX1K331MHL provides 2000 Hrs lifetime at 150°C compared to 1000 Hrs for the original part. This indicates enhanced thermal stability and extended operational life in high-temperature automotive environments.

Q: Is the substitute available in the same packaging format?

A: Yes. Both components use radial, can package with through-hole mounting. However, the physical dimensions differ, requiring PCB layout adjustment.

Q: Can the substitute handle higher ripple currents?

A: Yes. The UBX1K331MHL is rated for 1.48 A ripple current at 100 kHz, exceeding the original part's 680 mA specification, providing greater current handling capability.